Honeywell W7751D, W7751H, W7751B, W7751F SYSTEM ENGINEERING

([FHO

:%')+

9$9,,&RQWUROOHUV

Introduction

............................................................................................................................... 4

Description of Devices........................................................................................... 4

Control Application................................................................................................. 4

Control Provided.................................................................................................... 7

Products Covered.................................................................................................. 9

Organization of Manual.......................................................................................... 9

Applicable Literature.............................................................................................. 10

Product Names...................................................................................................... 10

Agency Listings...................................................................................................... 11

Abbreviations and Definitions ................................................................................ 12

Zone Control Definitions ........................................................................................ 13

Variable Air Volume ATUs ................................................................................ 13

Air Terminal Unit Control................................................................................... 13

Pressure - Dependent And Pressure - Independent Control ............................ 13

Variable Air Volume ATUs (VAV)...................................................................... 13

Single Duct Variable Air Volume (VAV) Systems.............................................. 14

Pressure Dependent Throttling VAV Boxes...................................................... 14

Pressure Independent VAV Boxes.................................................................... 14

Series Fan Powered VAV Boxes....................................................................... 14

Parallel Fan Powered VAV boxes..................................................................... 14

Induction VAV Boxes ........................................................................................ 14

Single-Duct Constant Volume Zone Reheat Air Terminal Units........................ 15

Dual Duct Air Handling Systems....................................................................... 15

Variable Constant Volume (Zero Energy Band) Dual-Duct VAV Boxes............ 15

Dual Duct Constant Volume Systems............................................................... 15

Dual-duct mixing box terminal units.............................................................. 15

Dual-duct constant volume mixing box terminal units.................................. 15

Variable Volume/Variable Temperature (VVT).................................................. 15

Single Zone Rooftop Air Handling Unit Control (CVAHU)................................. 16

Temperature and Ventilation Control ........................................................... 16

Unitary Equipment Control................................................................................ 16

Construction........................................................................................................... 16

Controllers......................................................................................................... 16

Performance Specifications.......................................................................... 19

Communications:.......................................................................................... 19

Environmental .............................................................................................. 20

Inputs/Outputs.............................................................................................. 21

Digital Inputs................................................................................................. 21

Digital Outputs: ............................................................................................. 21

Wall Modules .................................................................................................... 21

Sensor (Duct Mount)......................................................................................... 21

Configurations........................................................................................................ 21

General ............................................................................................................. 21

Type of Box Fan................................................................................................ 21

Dual Duct Flow Mixing: (For setup and Calibration refer to the

Dual Duct Calibration procedure in Appendix B.).................................... 21

Dual Duct No Flow Mixing: (For setup and Calibration refer to the

Dual Duct Calibration procedure in Appendix B.).................................... 21

Dual Duct Flow Mix: (Pressure independent cooling, pressure

dependent heating using one Excel 10.)................................................. 21

Dual Duct Flow Mix: (Alternate Configuration).............................................. 21

74- 2949- 1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Dual Duct Constant Volume: (For setup and Calibration refer to the Dual Duct Press Flow Mix: (Pressure dependent cooling and

Dual Duct Press Flow Mix: (Alternate Configuration).................................. 21

Dual Duct Discharge Sensor Constant Volume (pressure Dual Duct Press Flow Mix (pressure dependent cooling and Dual Duct Pressure Independent (pressure independent heating

PWM fan. ..................................................................................................... 21

T7780 DDWM Binding for VAVII Controllers................................................ 21

Type of Reheat Coil .......................................................................................... 21

Pneumatic Valve Actuator Control ............................................................... 21

Exhaust Tracking Option................................................................................... 21

Occupancy Sensor............................................................................................ 21

Window Open/Closed Digital Input ................................................................... 21

Heat/Cool change over ..................................................................................... 21

Wall Module Options......................................................................................... 21

Common Temperature Control (Share Wall Module)................................... 21

Sensor Options ................................................................................................. 21

Application Steps

Pneumatic Retrofit Applications........................................................................ 21

............................................................................................................................... 21

Overview................................................................................................................ 21

Step 1. Plan The System....................................................................................... 21

Step 2. Determine Other Bus Devices Required ................................................... 21

Step 3. Lay Out Communications and Power Wiring............................................. 21

E-Bus Layout..................................................................................................... 21

Power Wiring..................................................................................................... 21

Power Budget Calculation Example............................................................. 21

Line Loss...................................................................................................... 21

Step 4. Prepare Wiring Diagrams.......................................................................... 21

General Considerations.................................................................................... 21

W7751B OEM Version...................................................................................... 21

W7751D,F Field-Mount Versions...................................................................... 21

W7751H Version............................................................................................... 21

E-Bus Termination Module................................................................................ 21

Step 5. Order Equipment....................................................................................... 21

Step 6. Configure Controllers ................................................................................ 21

General............................................................................................................. 21

Hardware I/O Assignment................................................................................. 21

Fan Type...................................................................................................... 21

Reheat Definitions........................................................................................ 21

Reheat Type................................................................................................. 21

Flow Type..................................................................................................... 21

Miscellaneous............................................................................................... 21

Personality Information..................................................................................... 21

Commissioning ................................................................................................. 21

Job Commissioning...................................................................................... 21

ID Number......................................................................................................... 21

Bench Top Configuring................................................................................. 21

Configuring in the Field ................................................................................ 21

Configuring the Zone Manager..................................................................... 21

Excel 10 VAV Controller Point Mapping............................................................ 21

Step 7. Troubleshooting......................................................................................... 21

Troubleshooting Excel 10 Controllers and Wall Modules ................................. 21

Temperature Sensor and Setpoint Potentiometer Resistance Ranges ............ 21

Alarms............................................................................................................... 21

Broadcasting the Service Message................................................................... 21

W7751 Controller Status LEDs......................................................................... 21

T7770C or D Wall Module Override LED.......................................................... 21

T7770C,D or T7780 DDWM Bypass Pushbutton Operation............................. 21

T7780 DDWM Bypass Pushbutton ................................................................... 21

Dual Duct Calibration procedure in Appendix B.).................................... 21

heating using one Excel 10.)................................................................... 21

independent discharge using one Excel 10)........................................... 21

heating using one Excel 10).................................................................... 21

and cooling using one Excel 10)............................................................. 21

74-2949–1 2

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Appendices

...............................................................................................................................21

Appendix A. Creating a Work Bench for Configuring Excel 10 W7751D,F

VAV Controllers................................................................................................. 21

Appendix B. Using E-Vision to Commission a W7751 Controller.......................... 21

Job Commissioning ............................................................................................... 21

ID Number.............................................................................................................. 21

Bench Top Configuring ..................................................................................... 21

Configuring in the Field..................................................................................... 21

Configuring the Zone Manager ......................................................................... 21

Sensor Calibration............................................................................................. 21

Air Flow Balancing (For Pressure Independent applications only)................... 21

Procedure.......................................................................................................... 21

Resetting Air Flow Calibration to Factory Defaults............................................ 21

VAVII Calibration Sequence.............................................................................. 21

Appendix C. Sequences of Operation................................................................... 21

Common Operations......................................................................................... 21

Room Temperature Sensor (RmTemp)........................................................ 21

Remote Setpoint (RmtStptPot or DischargeAir_Sensor).............................. 21

Setpoint Limits (StptLoLim and StptHiLim)................................................... 21

Bypass Mode (StatusOvrride and StatusLed).............................................. 21

BypassTime.................................................................................................. 21

OverrideType................................................................................................ 21

OverridePriority............................................................................................. 21

Standby Mode.............................................................................................. 21

Window Sensor............................................................................................ 21

CAV Control ................................................................................................. 21

Continuous Unoccupied Mode..................................................................... 21

Share Wall Module....................................................................................... 21

Night Purge .................................................................................................. 21

Morning Warm-Up........................................................................................ 21

Smoke Control.............................................................................................. 21

Demand Limit Control................................................................................... 21

Start-Up........................................................................................................ 21

Air Flow Control Sequences of Operation.................................................... 21

Dual Duct, Pressure Independent, with flow mixing, with cold and

hot duct flow pickups (uses a satellite Excel 10 for hot duct)........................ 21

Dual Duct Flow Mixing: (For setup and Calibration refer to the

Dual Duct Calibration procedure in Appendix B)..................................... 21

Dual Duct, Pressure Independent, without flow mixing, with cold and

hot duct flow pickups (uses a satellite Excel 10 for hot duct)........................ 21

Dual Duct No Flow Mixing: (For setup and Calibration refer to the

Dual Duct Calibration procedure in Appendix B)..................................... 21

Dual Duct, Pressure Independent cooling, Pressure Dependent heating

with flow mixing, with cold duct flow pickup................................................... 21

Dual Duct Press Flow Mix (pressure dependent cooling and heating

using one Excel 10)................................................................................. 21

Dual Duct, Pressure Independent cooling and heating, constant volume

with hot and cold duct flow pickups............................................................... 21

Dual Duct Constant Volume:........................................................................ 21

Dual Duct, Pressure Dependent cooling and heating, with Flow mixing

and no flow pickups....................................................................................... 21

Dual Duct Press Flow Mix (pressure dependent cooling and heating

using one Excel 10)................................................................................. 21

Dual Duct, Pressure Independent cooling and Pressure Dependent

heating, with Constant Volume and Discharge Air Flow pickup.................... 21

Dual Duct Discharge Sensor Constant Volume (pressure dependent

cooling and heating using one Excel 10). ............................................... 21

Appendix D. Complete List of Excel 10 VAVII Controller User Addresses............ 21

Appendix E. Q7750A Excel 10 Zone Manager Point Estimating Guide................. 21

Approximate Memory Size Estimating Procedure............................................. 21

Appendix F. Custom Flow Pickup Tables (not Applicable for

Pressure Dependent Applications).................................................................... 21

Method 1. Pressure Velocity Formula............................................................... 21

Method 2. Pressure Versus Flow Graph........................................................... 21

3 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

,1752'8&7,21

'HVFULSWLRQRI'HYLFHV

The W7751B,D,F,H Excel 10 VAV II Box Controllers provide enhanced control solutions for single duct, dual duct and constant volume air terminal units. They feature preprogrammed heating/cooling or reheat control algorithms for standard VAV Box control applications that are selected through the E-Vision software configuration tool. They use Echelon® LonWorks® communication technology and the new Free Topology Transceiver (FTT) for greater installation flexibility. In addition, they are the first VAV Box Controllers in the marketplace from any manufacturer that use the LonMark® VAV Controller compliance profile for true openness and interoperability with third party LonMark® devices. They can be used in stand-alone applications or be used in combination with Excel 10 Zone Manager (FTT), other Excel Controllers, and the Excel Building Supervisor, to provided a complete and low cost control solution for small to large commercial buildings.

The W7751B,D,F,H Excel 10 VAV Box Controllers are configurable direct digital controllers designed for pressure independent or pressure dependent single duct VAV, dual duct VAV and constant volume air terminal unit control solutions. Four models are available including a low cost circuit board version (W7751B) for internal panel mounting, two plenum mounted controllers complete with a wiring subbase for easy field installation (W7751D and F) and the low cost W7751H Smart VAV Actuator consisting of the Excel 10 Controller that is factory mounted and wired to a 90 second ML6161B Actuator. All four of the Excel 10 VAV Box Controllers contain an integral microbridge air flow sensor that provides flow measurement for pressure independent applications. The controller configuration is selected using a personal computer and the E-Vision and CARE software configuration tools. The Excel 10 VAV Box Controllers offer many features required in todays commercial buildings including energy saving setpoint reset for electrical demand limit control, standby setpoints for setpoint reset in the occupied mode and unoccupied setpoints for both heating and cooling. The control solutions are scaleable from stand-alone installations, to a networked system using a Zone Manager as the network master or they can be fully integrated into the complete Excel 5000 system with Excel 80, 100, 500 and 600 controllers and Excel Building Supervisor. In addition, they

provide true open communication with the use of the LonMark® Controller compliance profile and the FTT for greater flexibility in network wiring and integration with third party LonMark® devices.

The T7770 are direct-wired wall modules used in conjunction with W7751B,D,F,H Controllers. The zone controlled by the W7751 Controllers will typically use a T7770 Wall Module with a temperature sensor for space temperature measurement in a minimum system configuration. Additional features available in the T7770 model include analog setpoint input, override digital input pushbutton, override status LED and E-Bus network access jack.

The T7780 Digital Display Wall Module (DDWM) has all of the features of the T7770 Wall Modules but communicates via the E-Bus.

The C7770A Air Temperature Sensor is a direct wired temperature sensor that is used to sense discharge or return air in a duct controlled by a W7751 Controller.

The Q7750A Excel 10 Zone Manager is a communications interface that allows devices on the E-Bus network to communicate with devices on the EXCEL 5000® System C-Bus. Fig. 1 shows an overview of a typical system layout. The Q7750A also provides some control and monitoring functions.

&RQWURO$SSOLFDWLRQ

VAV systems in commercial buildings typically incorporate a central air handler that delivers a modulated volume of air at a preconditioned temperature to multiple zones. Each zone is serviced by a VAV terminal box unit. Each box incorporates an air flow pickup assembly and motorized damper with optional fan and/or reheat coil. The controller determines and regulates the air flow of conditioned air to the space. The zone being fed by the terminal box will use a T7770 Wall Module or a T7780 DDWM for space temperature determination and access to the E-Bus network for operators. Fig. 2 shows a typical VAV box control application for the W7751B,D,F Controllers. Fig. 3 shows a typical VAV box control application for the W7751H Smart VAV Actuator. Table 1 shows the capabilities of the Excel 10 VAV Box Controllers.

74-2949–1 4

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

PERSONAL COMPUTER TOOLS E-VISION CARE

FTT E-BUS COMMUNICATIONS NETWORK

EXCEL 10

Q7751A FTT E-BUS ROUTER

W7750B CVAHU CONTROLLER

EXCEL 10 T7770 WALL MODULE

Q7752A FTT E-BUS SERIAL ADAPTER

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16

1234567 89101112131415J3

C-BUS COMMUNICATION NETWORK

EXCEL 10 Q7750A FTT ZONE MANAGER

C-BUS TO E-BUS INTERFACE DEVICE

FTT E-BUS COMMUNICATIONS NETWORK

EXCEL 10 W7752 FTT FAN COIL UNIT CONTROLLER

EXCEL BUILDING SUPERVISOR

FTT E-BUS COMMUNICATIONS NETWORK

EXCEL 10 W7751F PANEL PLENUM MOUNT VERSION VARIABLE AIR VOLUME CONTROLLER

EXCEL 500

Q7740A 2-WAY REPEATER

EXCEL 10 T7780 DIGITAL DISPLAY WALL MODULE

PRIMARY AIR

∆P PICKUP

TERMINAL HEAT

AIR TERMINAL UNIT

Fig. 1. Typical system overview.

ECHELON BUS

DISCHARGE AIR

TEMPERATURE SENSOR WITH REMOTE SETPOINT ADJUSTMENT AND UNOCCUPIED BYPASS OVERRIDE BUTTON

WINDOW CONTACT

OCCUPANCY CONTACT

RETURN AIR

E-BUS NETWORK ACCESS

M11817

EXCEL 10 VAV CONTROL MODULE W7751

E-BUS NETWORK ACCESS

Fig. 2. Typical W7751B,D,F VAV box control application.

M1 = DAMPER ACTUATOR M2 = VALVE ACTUATOR

M11818

5 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

PRIMARY AIR

TERMINAL HEAT

AIR TERMINAL UNIT

DISCHARGE AIR

TEMPERATURE SENSOR WITH REMOTE SETPOINT ADJUSTMENT

RETURN AIR

∆P PICKUP

EXCEL 10 W7751G SMART VAV ACTUATOR

M1-REHEAT VALVE ACTUATOR

E-BUS

E-BUS NETWORK ACCESS

M11819

Fig. 3. Typical W7751H Smart VAV Actuator box control application (Smart VAV Actuator mounts directly on the damper shaft as represented by the dotted line). (The W7751H does not include a window contact or occupancy

sensor contact terminals, which are available via the network only.)

Table 1. Excel 10 VAV Box Controller Capability.

Excel 10 VAV Box Controller

Capability W7751B,D,F W7751H

Fan

None X X Series X X Parallel - Temp X X Parallel - Flow X X Parallel - PWM

Reheat

None X X One Stage Reheat X X** Two Stages Reheat X X** Three Stages Reheat X — One Stage Periph X X** Floating Reheat (Two outputs) X X** Floating Periph (Two outputs) X X** Floating Reheat then Periph

X—

(Four outputs) Floating Periph then Reheat

X—

(Four outputs)

Excel 10 VAV Box

Controller Capability W7751B,D,F W7751H

Exhaust Tracking

Disabled X X Enabled X X

Occupancy Sensor

None X X Connected X —*

Window Contact

None X X Connected X —*

Wall Module Configuration

Local X X Shared X X

Wall Module Type

Sensor Only X X Sensor and Setpoint X X Sensor, Setpoint and Bypass X X Sensor and Bypass X X

PWM Reheat (One output) X X** PWM Periph (One output) X X** PWM Reheat then Periph

XX**

(Two outputs) PWM Periph then Reheat

XX**

(Two outputs)

(continued)

74-2949–1 6

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Table 1. Excel 10 VAV Box Controller Capability

Excel 10 VAV Box

Controller Capability W7751B,D,F W7751H

Air Temperature Sensor

20 K ohm air temperature sensors can be used in conjunction with wall modules (Either a wall module or an air temperature sensor can be used with the W7751H, but not both.)

Dual Duct Pressure

Independent Flow mixing

Cold and hot duct flow

pickups

Without flow mixing

Cold and hot duct flow

pickups

Constant volume

Cold and hot duct flow

pickups With cold duct pickup only X X Constant volume with

discharge pickup only

Dual Duct Pressure

Dependent

With flow mixing X X Without flow mixing X X

* Available only via the network for the W7751H.

** The W7751H Smart VAV Actuator provides damper

control and two configurable outputs available for two stages of reheat, floating reheat (requires two outputs), PWM Reheat or Periph (one output required), PWM Reheat and Periph (two outputs required) or one stage of reheat or Periph (can be PWM also) and a serial or parallel fan.

*** These applications require two W7751 Excel 10

controllers per zone.

**** Flow sensor in discharge air. The temperature

control loop controls the cool damper position and the flow controls adjust the heating damper position.

(Continued).

X*** X***

X**** X****

&RQWURO3URYLGHG

The W7751B,D,F,H Controllers are primarily intended for pressure independent, single or dual-duct VAV box control. Pressure independent control specifies that the individual zone terminal unit has a means for maintaining a consistent volume of air into the zone regardless of the input static pressure. The controller modulates the air flow into the zone to satisfy the Zone Temperature Setpoint. Minimum Air Flows are maintained except during emergency strategy periods or during building Unoccupied periods if using physical position stops, a MIN/MAX air flow is always maintained (see Table 2).

Pressure dependent control specifies that the damper position is controlled by space temperature only and not by a measurement of air flow volume. The amount of air delivered to the zone at any given damper position is dependent on the static pressure in the supply air duct (physical position stops, range stop pins, are used to keep the damper at a fixed position).

VAV systems generally only provide cool air to the zones; therefore, the W7751 Controller provides additional outputs for control of heating systems such as reheat coils for Heat mode or Morning warm-up mode operation. The heating equipment can be staged-resistive heating, staged 2-position (solenoid) valve, or modulated steam or hot water valve.

The possible modes of operation are listed in Table 2.

7 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Table 2. Modes Of Operation For Excel 10 VAV Controller.

Mode Description Events Causing a Controller to Switch to This Mode

Effective Occupancy (User Address: StatusOcc)

OCCUPIED* Controller is in Occupied mode. Any of the following: Network input (DestSchedOcc) containing

STANDBY* Controller is in Standby mode. Network input (DestSchedOcc) containing time-of-day schedule

UNOCCUPIED Controller is in Unoccupied mode. Network input (DestSchedOcc) containing time-of-day schedule

Override Modes (User Address: StatusOvrride)

OCCUPIED* Controller is in Occupied mode. Network input (DestSchedOcc) containing time-of-day schedule

UNOCCUPIED Controller is in Unoccupied mode. Network input (DestSchedOcc) containing time-of-day schedule

BYPASS User-initiated Bypass of the

NOT ASSIGNED No Bypass action. No Override input received.

Operational Modes (User Address: StatusMode)

START-UP AND WAIT (followed by) FLOAT_OUT_SYNC

COOLING The Excel 10 VAV Controller is

HEATING The Excel 10 VAV Controller is

REHEAT The Excel 10 VAV Controller is

MORNING WARM-UP

NIGHT PURGE The main AHU is supplying fresh

PRESSURIZE The box damper is set at

DEPRESSURIZE The box damper is set at

FLOW TRACKING Temperature control is turned off.

*Available only via the network for the W7751H.

Unoccupied mode.

Flow Diversity on power-up provides a staggered start sequence to evenly apply the load to the supply fan and electrical system.

controlling the Cooling mode.

controlling the Heating mode.

controlling the Reheating mode.

The main AHU is supplying warm air, and the box damper is set at (WarmupDmprPos).

(100 percent outdoor) air, and the box damper is set at (PurgeDmprPos).

(PressDmprPos).

(DepressDmprPos).

The box maintains a Flow Setpoint based on the sum of all of the controllers supplying the zone (the SrcBoxFlow controller provides other controllers with DestFlowTrack input).

time-of-day schedule flag from either the Excel 10 Zone Manager, a C-Bus controller, an Occupancy Sensor Digital Input, or from Network input (DestManMode) for manual override to OCCUPIED mode.

flag from the Excel 10 Zone Manager must be OCCUPIED and the Occupancy Sensor Digital Input must be UNOCCUPIED.

flag from the Excel 10 Zone Manager, the C-Bus, or the network input CmdManOcc has a value of UNOCCUPIED.

flag from the Excel 10 Zone Manager, the C-Bus, the Occupancy Sensor Digital Input or from the Network input (DestManMode) for manual override to OCCUPIED mode.

flag from the Excel 10 Zone Manager, the C-Bus, or the network input DestManualOcc has a value of UNOCCUPIED.

Digital input (Bypass pushbutton) has been pressed, and the Bypass duration timer has not yet expired, or the network input DestManualOcc has a value of BypassTime.

These modes occur on controller power-up, and after downloading to the controller from E-Vision or going to auto mode to manual mode (DestManMode). Temperature and flow control loops are disabled.

Network input (DestHvacMode) containing AHU operational mode information from other E-Bus controllers that have the value of COOL/AUTO.

Network input (DestHvacMode) containing AHU operational mode information from other E-Bus controllers that have the value of HEAT/AUTO.

Network input (DestHvacMode) has the value of AUTO, so that when cool air is supplied to the box and the space temperature is below the Heating Setpoint, causes the Excel 10 VAV Controller control algorithm to energize the Reheat coil(s).

Network input (DestHvacMode) containing AHU operational mode information from E-Bus controllers that have the value of MORNING WARM-UP.

Network input (DestHvacMode) containing AHU operational mode information from E-Bus controllers that have the value of NIGHT PURGE.

Network input (DestHvacMode) containing smoke control signal from E-Bus controllers that have the value of PRESSURIZE.

Network input (DestHvacMode) containing smoke control signal from E-Bus controllers that have the value of DEPRESSURIZE.

Configuration parameter is box type (Flow_Tracking). NOTE: See Fig. 45. FlowTrackOfst (Flow Offset) determines the differential between the boxes that are the supply air flow and the exhaust air flow.

(continued

)

74-2949–1 8

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Table 2. Modes Of Operation For Excel 10 VAV Controller (Continued).

Mode Description Events Causing a Controller to Switch to This Mode

MANUAL POSITION Box damper is set to (ManDamp). Typically this is done through E-Vision or XBS by setting the

Operational Modes (User Address: StatusMode)

MANUAL FLOW Air Flow Setpoint is set to

MANUAL See comments for FlowManState in

CLOSED* Indicates a window is open; box

SELF TEST Control algorithm is disabled; various

I/O TEST Control algorithm is disabled, various

FLOAT_OUT_SYNC Controller is synchronizing actuators. Control loops are temporarily suspended. NOTE: For controllers

(DestManFlowSpt).

Appendix D,

damper is set to (WinOpnDmprPos).

hardware tests can be performed.

hardware tests can be performed (see I/O Test Mode, Application Step

7. Troubleshooting).

Table D7. LonMark®.

point DamperPos to Manual mode.

Typically this is done through E-Vision or XBS by setting the point SupplyFlow to Manual mode.



The (Window) Digital Input contacts are open and the controller is configured for a window sensor.

The variable (TestMode) was set to TESTING. NOTE: This mode is available in Excel 10 VAV Controller versions and also include the W7751H Smart VAV Actuator.

The I/O test pin/pad is shorted (see the I/O Test Mode, Application Step 7. Troubleshooting). NOTE: The I/O Test Mode is not available on the W7751H Smart VAV Actuator.

that enter the Unoccupied mode, its actuators are controlled and resynchronize during a time frame of 125 percent of the actuators motor speed; for example, if an actuators motor speed is 90 seconds, the actuator would resynchronize after 112 seconds once its controller entered the Unoccupied mode.

If a controller remains in continuous Occupied mode, the actuators that it controls resynchronize approximately once every 24 hours based on the CPU clock of the controller. If a controller remains in continuous Occupied mode it resynchronizes randomly during this time period of one hour.

DISABLED Shutoff control algorithm Network input (DestManMode) containing AHU operational mode

*Available only via the network for the W7751H.

3URGXFWV&RYHUHG

This System Engineering Guide describes how to apply the Excel 10 family of W7751 VAV Controllers and related accessories to typical applications. The specific devices covered include:

W7751B,D,F,H Controllers.

•

T7770A through D Wall Modules.

•

T7780 Digital Display Wall Module.

•

Q7750A Excel 10 Zone Manager.

•

Q7751A,B Bus Router.

•

Q7752A Serial Adapter.

•

Q7740A,B FTT Repeaters.

•

209541B FTT Termination Module.

•

information from other E-Bus controllers that have the value of DISABLED.

2UJDQL]DWLRQRI0DQXDO

This manual is divided into three basic parts: the Introduction, the Application Steps, and the Appendices that provide supporting information. The Introduction and Application Steps 1 through 5 provide the information needed to make accurate material ordering decisions. Application Step 6 and the Appendices include configuration engineering that can be started using Excel E-Vision PC Software after the devices and accessories are ordered. Application Step 7 is troubleshooting. The organization of the manual assumes a project is being engineered from start to finish. If an operator is adding to, or is changing an existing system, the Table of Contents can provide the relevant information.

9 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

$SSOLFDEOH/LWHUDWXUH

The following list of documents contains information related to the Excel 10 family of VAV Box Controllers and the EXCEL 5000® System in general.

Form No. Title

74-2076C Excel 10 Technical Literature Collation 74-2942 Excel 10 W7751B,D,F Controller

Specification Data

74-2953 Excel 10 W7751H Smart VAV Actuator

Specification Data

74-2697 T7770A through G Wall Module

Specification Data

74-2955 T7780 Digital Display Wall Module

Specification Data

74-2868 Excel 10 C7770A Air Temperature Sensor

Specification Data

74-2950 Excel 10 Q7750A, Zone Manager

Specification Data

74-2952-1 Excel 10 Q7751A,B Router Specification

Data

74-2954-1 Excel 10 Q7752A Serial Interface

Specification Data

74-2858 Excel 10 Q7740A,B FTT Repeaters

Specification Data

74-2951 Excel 10 Q7750A Zone Manager Checkout

and Test Manual

95-7504 Excel 10 W7751B,D,F Controller

Installation Instructions

95-7538 T7770A,B,C,D,E,F,G Wall Module

Installation Instructions

95-7558 T7780 Digital Display Wall Module

Installation Instructions

95-7509 Excel 10 Q7750A Zone Manager

Installation Instructions.

95-7510 Excel 10 Q7751A,B Router Installation

Instructions

95-7511 Excel 10 Q7752A Serial Interface

Installation Instructions

95-7516 Excel 10 SLTA Connector Cable Installation

Instructions

95-7555 Excel 10 Q7740A,B FTT Repeaters

Installation Instructions

95-7554 Excel 10 209541B Termination Module

Installation Instructions

74-2588 Excel E-Vision User’s Guide 74-5587 CARE User’s Manual 74-1392 CARE Excel 10 Zone Manager User’s

Guide

74-5577 CARE Icon Guide 74-2039 XBS User’s Manual

74-5018 XBS Application Guide

3URGXFW1DPHV

The W7751 Controller is available in four models:

W7751B VAV Box Controller for OEM mounting on a

•

VAV box. W7751D VAV Box Controller mounts on either a

•

standard 4 in. by 4 in. electrical junction box or a standard 5 in. by 5 in. electrical junction box (wire passes through junction box to wiring subbase). It can also be snapped onto standard EN 50 022 DIN rail 35 mm by 7.5 mm (1-3/8 in. by 5/16 in.). W7751F VAV Box Controller mounts into either a panel

•

with screws or snaps onto standard EN 50 022 DIN rail 35 mm by 7.5 mm (1-3/8 in. by 5/16 in.). Wires are terminated externally to wiring subbase. W7751H Smart VAV Actuator is a VAV controller that is

•

factory mounted to an ML6161B1000 Actuator. The actuator/controller assembly is field mounted to the VAV box damper shaft similar to the mounting of a standard actuator, and the controller wiring is terminated to the screw terminals that are located under a snap-on cover.

The T7770 Wall Module is available in five models:

T7770A1006 Wall Module with temperature sensor.

•

Use with Excel 5000 or Excel 10 Controllers. T7770A2004 Wall Module with temperature sensor and

•

E-Bus network connection. Use with Excel 5000 or Excel 10 Controllers. T7770B Wall Module with temperature sensor, setpoint,

•

and E-Bus network connection. Use with Excel 5000 or Excel 10 Controllers. T7770C Wall Module with temperature sensor, setpoint,

•

Bypass button and LED, and E-Bus network connection. Use with Excel 5000 or Excel 10 Controllers. T7770D Wall Module with temperature sensor, Bypass

•

button and LED, and E-Bus network connection. Use with Excel 5000 or Excel 10 Controllers.

NOTE: The T7770B,C Models are available with a

The T7780 DDWM is available in four models:

•

Other products:

• Q7750A Excel 10 Zone Manager.

• Q7751A,B Bus Router.

• Q7752A Serial Adapter.

• Q7740A,B FTT Repeaters

• 209541B FTT Termination Module

• ML6161 Series 60 Damper Actuator.

• M6410A Series 60 Valve Actuator (use with V5812 or

• ML684A Series 60 Versadrive Valve Actuator (use with

• MMC325-010 Transducer, Series 60 to pneumatic 0 to

• MMC325-020 Transducer, Series 60 to pneumatic 0 to

• ML6464A Direct Coupled Damper Actuator, 66 lb.-in.

• ML6474 Direct Coupled Damper Actuator, 132 lb.-in.

• ML6185A Direct Coupled Damper Actuator, Spring

relative scale plate adjustable in E-Vision °F (± 5°C).

T7780 DDWM displays and provides space temperature, setpoint, Occ/Unocc override, Application Mode, and Fan mode/speed selection for all Excel 10 controllers (except W7751A,C,E,G).

V5813 Valves). V5011 and V5013 Valves). 10 psi. 20 psi. torque, Series 60. torque, Series 60. Return, Series 60.

74-2949–1 10

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

• ML7984B Direct Coupled Valve Actuator, PWM (use with V5011 or V5013F,G Valves).

•

EL7680A1008 Wall Module Infrared Occupancy Sensor.

•

EL7628A1007 Ceiling Mounted Infrared Occupancy Sensor.

•

EL7611A1003 Ultrasonic Occupancy Sensor.

•

EL7612A1001 Ultrasonic Occupancy Sensor.

•

AK3781 E-Bus (non-plenum): 22 AWG (0.325 mm

) twisted pair solid conductor, non-shielded wire (one twisted pair).

•

AK3782 E-Bus (non-plenum): 22 AWG (0.325 mm

) twisted pair solid conductor, non-shielded wire (two twisted pairs).

$JHQF\/LVWLQJV

Table 3 provides information on agency listings for Excel 10 products.

Table 3. Agency Listings.

Device Agency Comments

W7751B,D,F Controllers

W7751H Smart VAV Actuator

UL Tested and listed under UL916 (file number E87741).

CSA Listed (LR95329-3). FCC Complies with requirements in FCC Part 15 rules for a Class A Computing Device.

Operation in a residential area may cause interference to radio or TV reception and require the operator to take steps necessary to correct the interference.

FCC Complies with requirements in FCC Part 15 rules for a Class B Computing Device.

Operation in a residential area can cause interference to radio or TV reception and require the operator to take steps necessary to correct the interference.

UL Tested and listed under UL916 (file number E87741).

cUL Tested and listed under UL916 (file number E87741).

CE General Immunity per European Consortium standards EN50081-1 (CISPR 22 Class B)

and EN 50082-1:1992 (based on Residential, Commercial, and Light Industrial). EN 61000-4-2 IEC 1000-4-2 (IEC 801-2) Electromagnetic Discharge. EN 50140, EN 50204 IEC 1000-4-3 (IEC 801-3) Radiated Electromagnetic Field. EN 61000-4-4 IEC 1000-4-4 (IEC 801-4) Electrical Fast Transient (Burst).

•

AK3791 E-Bus (plenum): 22 AWG (0.325 mm

) twisted pair solid conductor, non-shielded wire (one twisted pair).

•

AK3792 E-Bus (plenum): 22 AWG (0.325 mm

) twisted pair solid conductor, non-shielded wire (two twisted pairs).

Refer to Table 10 in Application Step 5. Order Equipment for a complete listing of all available part numbers.

NOTE: The Q7750A Zone Manager is referred to as

(E-Link) in internal software and CARE.

Radiated Emissions and Conducted Emissions. EN 55022:1987 Class B. CISPR-22: 1985.

FCC Complies with requirements in FCC Part 15 rules for a Class B Computing Device.

Operation in a residential area may cause interference to radio or TV reception and require the operator to take steps necessary to correct the interference.

T7770A through D

UL (Not applicable.)

Wall Modules

CSA (Not applicable.) FCC (Not applicable.)

T7780 DDWM CE Emissions; EN50081-1, EN55022 (CISPR 22 Class B), Immunity 50082-1

UL &cUL Tested and listed under UL916, S8L9 Energy Management Equipment.

FCC Complies with requirements in FCC Part 15 rules for a Class B Computing Device.

11 74-2949–1

(contifnued)

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Table 3. Agency Listings (Continued).

Device Agency Comments

Q7750A Excel 10 Zone Manager

Q7751A,B Router, Q7752A Serial Adapter

UL Tested and listed under UL916, file number S4804 (QVAX, PAZY).

CSA Listing pending. FCC Complies with requirements in FCC Part 15 rules for a Class A Computing Device.

Operation in a residential area can cause interference to radio or TV reception and require the operator to take steps necessary to correct the interference.

UL UL1784.

CSA Listed. FCC Complies with requirements in FCC Part 15 rules for a Class B Computing Device.

$EEUHYLDWLRQVDQG'HILQLWLRQV

AHU

- Air Handling Unit; the central fan system that includes the blower, heating equipment, cooling equipment, ventilation air equipment, and other related equipment.

Box

- A VAV terminal unit box.

CAV

- Constant Air Volume; a TUC that maintains a fixed air flow through the box.

- Carbon Monoxide. Occasionally used as a measure of indoor air quality.

- Carbon Dioxide. Often used as a measure of

CARE

C-Bus

CVAHU

DDWM

E-Bus

E-Bus Segment

Echelon®

Economizer

indoor air quality.

- Computer Aided Regulation Engineering; the PC based tool used to configure C-Bus and E-Bus devices.

-Honeywell proprietary Control Bus for communications between EXCEL 5000® System controllers and components.

CPU

- Central Processing Unit; an EXCEL 5000® System controller module.

cUL

- Underwriters Laboratories Canada.

-Constant Volume AHU; refers to a type of air handler with a single-speed fan that provides a constant amount of supply air to the space it serves.

DDF

- Delta Degrees Fahrenheit.

-Digital Display Wall Module.

D/X

- Direct Expansion; refers to a type of mechanical cooling where refrigerant is (expanded) to its cold state, within a heat-exchanging coil that is mounted in the air stream supplied to the conditioned space.

- Honeywell implementation of Echelon® LonWorks® network for communication among Excel 10 Controllers.

than 60 Excel 10s. Two segments can be joined together using a router.

and the Neuron® chips used to communicate on the E-Bus.

regulate the quantity of outdoor air that enters the building. In cool outdoor conditions, fresh air can be used to supplement the mechanical cooling equipment. Because this action saves energy, the dampers are often referred to as

dampers

- An E-Bus section containing no more

- The company that developed the LON® bus

- Refers to the mixed-air dampers that

economizer

EMI

- Electromagnetic Interference; electrical noise that can cause problems with communications

E-Link

EEPROM

EPROM

Excel 10 Zone Manager

NOTE: The Q7750A Zone Manager can be referred to as

Firmware Floating Control

Level IV

OEM

signals.

- Refers to the Q7750A Zone Manager. This name is used in internal software and in CARE software.

EMS

- Energy Management System; refers to the controllers and algorithms responsible for calculating optimum operational parameters for maximum energy savings in the building.

- Electrically Erasable Programmable Read Only Memory; the variable storage area for saving user setpoint values and factory calibration information.

- Erasable Programmable Read Only Memory; the firmware that contains the control algorithms for the Excel 10 Controller.

interface between the C-Bus and the E-Bus. The Excel 10 Zone Manager also has the functionality of an Excel 100 Controller, but has no physical I/O points.

E-Link in the internal software, CARE.

- Software stored in a nonvolatile memory

medium such as an EPROM. of a valve or damper. Floating Control utilizes one

digital output to pulse the actuator open, and another digital output to pulse it closed.

IAQ

- Indoor Air Quality. Refers to the quality of the air in the conditioned space, as it relates to occupant health and comfort.

I/O

- Input/Output; the physical sensors and actuators connected to a controller.

I x R

- I times R or current times resistance; refers to Ohm’s Law: V = I x R.

- Degrees Kelvin.

- Refers to a classification of digital communication wire. Formerly known as UL Level IV, but there is any question about wire compatibility, use Honeywell-approved cables (see Step 5 Order Equipment section).

-Original Equipment Manufacturer; the company that builds the VAV boxes.

- Refers to Series 60 Modulating Control

not

- A controller that is used to

equivalent to Category IV cable. If

74-2949–1 12

NEC

- National Electrical Code; the body of standards

NEMA

Node

PWM

Subnet

W7751 Wall Module

for safe field-wiring practices.

- National Electrical Manufacturers Association; the standards developed by an organization of companies for safe field wiring practices.

- A Communications Connection on a network; an Excel 10 Controller is one node on the E-Bus network.

- Network Variable; an Excel 10 parameter that can be viewed or modified over the E-Bus network.

- An IBM compatible Personal Computer with 386 or higher processor and capable of running Microsoft® Windows™ Version 3.1.

Pot

- Potentiometer. A variable resistance electronic component located on the T7770B,C Wall Module; used to allow user-adjusted setpoints to be input into the Excel 10 Controller.

- Pulse W i dth Modulated output; allows analog modulating control of equipment using a digital output on the controller.

RTD

- Resistance Temperature Detector; refers to a type of temperature sensor whose resistance output changes according to the temperature change of the sensing element.

- An E-Bus segment that is separated by a router from its Q7750A Zone Manager.

TOD

- Time-Of-Day; the scheduling of Occupied and Unoccupied times of operation.

TCU

- Terminal Control Unit; industry can refer to VAV box controllers such as the Excel 10 VAV Controller as TCUs.

TUC

- Terminal Unit Controller; industry can refer to VAV box controllers such as the Excel 10 VAV Controller as TUCs.

- Volt Amperes; a measure of electrical power output or consumption as applies to an ac device.

Vac

- Voltage alternating current; ac voltage rather than dc voltage.

VAV

- Variable Air Volume; refers to either a type of air distribution system, or to the W7751 Excel 10 VAV Box Controller that controls a single zone in a variable air volume delivery system.

VOC

- Volatile Organic Compound; refers to a class of common pollutants sometimes found in buildings. Sources include out-gassing of construction materials, production-line by-products, and general cleaning solvents. A VOC is occasionally used as a measure of indoor air quality.

-The model number of the Excel 10 VAV Box Controllers (also see VAV).

- The Space Temperature Sensor and other optional controller inputs are contained in the T7770 or T7780 Wall Modules. See Application Step 5. Order Equipment for details on the various models of Wall Modules.

XBS

- Excel Building Supervisor; a PC based tool for monitoring and changing parameters in C-Bus devices.

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

=RQH&RQWURO'HILQLWLRQV

9DULDEOH$LU9ROXPH$78V

Variable air volume (VAV) ATUs are commonly called VAV boxes. Each VAV box has a controller that controls the temperature of a room or zone by modulating a damper in the VAV box to vary the amount of conditioned air supplied to the zone rather than changing the temperature of the conditioned air. They are used in larger buildings that have many zones along with a central air handling fan that supplies conditioned air via a pressurized main air duct system. The central air handling fan has a separate equipment controller that controls discharge air temperature, humidity, and supply duct static pressure.

$LU7HUPLQDO8QLW&RQWURO

Air terminal units (ATUs) regulate the amount of conditioned air delivered to satisfy the temperature requirements of a room or space. ATUs are classified by air handling system design and are available in several configurations. ATUs may be of variable air volume or constant volume design, and may be used in single-duct or dual-duct air handling systems. ATU controls can be as basic as a room thermostat controlling a damper or a more complex direct digital controller operating a damper, a terminal fan and enabling a reheat coil. In all cases, each ATU has a controller that is used to control the environment of the room or space.

3UHVVXUH'HSHQGHQW$QG3UHVVXUH,QGHSHQGHQW &RQWURO

Static pressure variations in an air handling system can affect terminal unit operation. Pressure-dependent terminal units are affected by changing duct static pressures because their damper position is determined by space temperature only. They may have mechanical or electric minimum and maximum air flow limits. Pressureindependent terminal units can automatically adjust to duct pressure changes because they contain air flow sensors and the controllers compensate for pressure changes in the main air distribution system. The damper position in pressure independent terminal units is determined by both space temperature and air flow volume.

9DULDEOH$LU9ROXPH$78V9$9

Variable air volume (VAV) ATUs are commonly called VAV boxes. Each VAV box has a controller that controls the temperature of a room or zone by modulating a damper in the VAV box to vary the amount of conditioned air supplied to the zone rather than changing the temperature of the conditioned air. They are used in larger buildings that have many zones along with a central air handling Unit (AHU) that supplies conditioned air via a pressurized main air duct system.

13 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

6LQJOH'XFW9DULDEOH$LU9ROXPH9$96\VWHPV

Single duct VAV systems are used in over 80 percent of the VAV applications and employ one main supply air duct from the central air handling system. The air handling unit supplies cool air virtually one hundred percent of the time, with the only exception being a morning warm-up cycle that is used in buildings that are not continuously occupied, that temporarily raises the discharge air temperature of the central air handling system to quickly warm the building from its unoccupied zone temperatures to the occupied zone temperatures. Since the central air handling system is usually supplying cool air, single or multiple electric reheat coils or a modulating hot water (hydronic) reheat coil are often added in the VAV box discharge air duct to reheat the cool air when the zone becomes too cold. VAV boxes with reheat coils typically have a series or parallel fan in the VAV box to ensure air flow across the coil in the heating mode.

3UHVVXUH'HSHQGHQW7KURWWOLQJ9$9%R[HV

Pressure dependent throttling VAV boxes are the simplest and least expensive ATU. A controller modulates a damper actuator according to the temperature in the zone. The pressure dependent VAV box usually has minimum and/or maximum damper position setpoint stops in the controller for limiting air volume. Because the unit is pressure dependent, the volume of air distributed to the zone at any given space temperature varies with the supply duct static pressure at the inlet of the VAV box. Maintaining a stable duct static pressure is important for proper operation and proper setting of the minimum damper position setpoint stop is essential for adequate circulation. When reheat coils and/or finned tube radiation are used the controller will set the damper position at a minimum position during the heating mode to ensure some air flow into the space and optimize heat transfer from the reheat coil. Pressure dependent VAV boxes are used in smaller buildings or in areas of larger buildings where the supply duct static pressure is low and stable.

3UHVVXUH,QGHSHQGHQW9$9%R[HV

Pressure-independent or variable constant-volume VAV boxes are essentially air flow control devices that deliver a constant volume of air to a conditioned space at a given temperature despite a varying supply duct static pressure. An air flow sensor in the inlet of the VAV box is used to measure the volume of air and the

resets the air flow volume setpoint as the thermal load changes in the space

VAV box controller provides two control sequences; zone temperature control and terminal unit air flow control. The controller usually has a minimum air flow setpoint to maintain air flow at light load conditions and a maximum air flow setpoint to limit the air flow to meet the design conditions for the zone. A single zone sensor can be used to control multiple VAV boxes with differing volume ratings. When reheat coils and/or finned tube radiation are used with this unit the controller will lower the air flow setpoint during the heating mode to ensure air flow into the room and optimize heat transfer from the reheat coil. Pressure independent VAV boxes are used in buildings with larger air handling systems that have constant duct static pressure fluctuations due to the large number of zones.

. Therefore, a pressure independent

VAV box controller

6HULHV)DQ3RZHUHG9$9%R[HV

Series Fan-powered VAV boxes are similar to pressure dependent and/or pressure independent VAV boxes, except they include an integral fan in series with the VAV box discharge duct that recirculates space air at constant volume and enhances the air distribution in the zone. Primary air is modulated by the VAV box damper to meet space demand for cooling and as primary air modulates down, more plenum air is drawn in by the fan to maintain a constant discharge volume to the zone. Typically the series fan is on continuously during occupied hours, or it can be programmed to be activated as primary air decreases to ensure adequate air circulation. In addition to enhancing air distribution, the units serving the perimeter area of a building usually include a reheat coil that is sequenced with the primary air damper to supply heat when required. When the primary air system is not operating (nighttime or unoccupied control mode), the night operating mode of the controller enables the fan and the reheat coil to maintain the lower unoccupied temperature setpoint in the space. Series Fan Powered VAV boxes can be pressure independent or pressure dependent.

3DUDOOHO)DQ3RZHUHG9$9ER[HV

Parallel Fan Powered VAV boxes or Bypass Fan Induction Terminal Units are similar to Series Fan-powered VAV terminal units, except the fan is located in the return plenum and does not run continuously during occupied hours. When the zone temperature is low and the need for primary air decreases, the controller modulates the primary air damper to a minimum and enables the fan, which recirculates warm air from the return plenum into the zone acting as the first stage of reheat. If a reheat coil is used the fan is cycled on when the reheat coil is enabled. As the space warms, the reheat valve closes and the fan cycles off as the primary air damper opens to allow delivery of conditioned air from the air handling system. When heating is required in the unoccupied mode, the fan at the central air handling system remains off , the VAV box fan and the reheat coil are enabled and the zone is heated to a reduced night setback temperature using air from the return air plenum. Parallel Fan Powered VAV boxes can be pressure independent or pressure dependent.

,QGXFWLRQ9$9%R[HV

Induction VAV boxes use induced return air as the reheat medium which means no parallel fan is present in the VAV box. Induction VAV boxes are usually installed above the ceiling and draw return air from the plenum created by a false ceiling. The VAV box controller uses an air flow sensor for controlling air flow and a room sensor for controlling room temperature similar to pressure independent VAV boxes. The volume of air coming through the primary damper is controlled by positioning both dampers simultaneously so that as the primary air damper closes, the return air damper opens. Return air is thus drawn into the unit and recirculated into the space. Like pressure independent VAV boxes the controller resets the air flow setpoint of the controller as the thermal load changes in the conditioned space. For extremely cold design conditions, a reheat coil can be added.

74-2949–1 14

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

The induction VAV ATU maintains satisfactory air motion at lower loads than a throttling VAV box can, however, the wide use of Parallel Fan Powered VAV boxes has now limited the use of Induction VAV boxes.

6LQJOH'XFW&RQVWDQW9ROXPH=RQH5HKHDW$LU 7HUPLQDO8QLWV

Single-Duct Constant Volume Zone Reheat Systems are used in low static pressure systems and have a heating coil (hot water, steam, or electric) in the branch supply duct to each zone. The central air-handling unit supplies constant temperature air and a manual balancing damper in each zone is set in a fixed position to determine the amount of air delivered to that zone. The volume of air delivered to each zone will change as the static pressure of the supply duct changes, however, in low static pressure systems the changes in the supply duct static pressure are small and do not have a dramatic effect on the amount air delivered to the zone. The control strategy used in single zone reheat systems is simple and involves activating electric heat or positioning a valve in conjunction to the zone temperature. In most cases this is accomplished using a simple space thermostat. However, direct digital controllers can be used in these cases to control multiple zone valve positions the reheat coil valve (or electric heating elements) as required to maintain space condition.

'XDO'XFW$LU+DQGOLQJ6\VWHPV

In a dual-duct air handling system, supply air is divided at the central fan and hot air and cold air flow through separate ducts to the perimeter zones in the building. Dual-duct terminal units are essentially mixing boxes with two supply inlets and one discharge outlet. The air is allowed to mix in the mixing box section and is discharged out of a single duct into the zone. Since a source of heating is available reheat coils are not used in the zone. Basic dual-duct mixing systems were not economical because supply air was cooled and heated year round and modern energy codes prohibited their use in many cities in the U.S. except in critical applications like hospitals, nursing homes, etc. However, with direct digital controllers and networked systems the individual zone data can be used to reset hot and cold duct temperatures as needed, allowing dual duct systems to be used more often in todays applications. Dual duct systems are often used in conjunction with single duct systems in the same building.

9DULDEOH&RQVWDQW9ROXPH=HUR(QHUJ\%DQG 'XDO'XFW9$9%R[HV

Variable Constant Volume (Zero Energy Band) Dual-Duct VAV Boxes have inlet dampers (with individual damper actuators and air flow sensors) on the cooling and heating supply ducts. The air flow is pressure independent and the Dual Duct VAV Box controller uses the zone temperature to determine the required flow of hot and cold air from the respective ducts into the mixing box and resets the hot duct and cold duct air flow setpoints in sequence as space load changes. The Zero Energy Band (ZEB) is an energy conservation technique that allows temperatures to float between programmable settings to prevent the consumption of heating or cooling energy while the temperature is in this range. As space temperature rises to approach the controller setpoint, the hot air flow volume drops to zero. If space temperature continues to rise

through the ZEB, the output signal from the controller modulates the cold-air damper open. The controller maintains adjustable minimum flows for ventilation, with no overlap of damper operations, during the ZEB when neither heating nor cooling is required. For example, if a zone had a setpoint of 74 degrees and a zero energy band of 2 degrees then the zone temperature would be allowed to float between 73 degrees and 75 degrees before the controller would use hot air to heat the zone or cool air to cool the zone. When the ZEB technique is properly used the comfort of the occupants is not sacrificed in the process of saving energy.

'XDO'XFW&RQVWDQW9ROXPH6\VWHPV

Dual-duct mixing box terminal units

Dual-duct mixing box terminal units generally apply to lowstatic pressure systems that require large amounts of ventilation. The warm duct damper and the cool duct damper are linked to operate in reverse of each other from a single damper actuator. The controller positions the mixing dampers through a damper actuator to mix warm and cool supply air to maintain space condition. Discharge air quantity depends on the static pressure in each supply duct at that location.

Dual-duct constant volume mixing box terminal units

Dual-duct constant volume mixing box terminal units typically used on high-static-pressure systems where the air flow quantity to each space is critical. The units are the same as those described in the previous paragraph, except that they include either an integral mechanical constant volume regulator or an air flow constant volume control furnished by the unit manufacturer to change the damper position to maintain a constant air flow volume with changes in duct static pressure.

are

9DULDEOH9ROXPH9DULDEOH7HPSHUDWXUH997

VVT systems are also called commercial zoning systems and use a constant volume air supply (roof top unit, heat pump, small air handler) with heating, cooling and economizer functions and vary the flow rates and supplyair temperature into smaller, damper-controlled zones through a single duct distribution system. Each zone damper is modulated based on space temperature. However, damper control is based only on zone temperature and there is no flow control at the zone level as there is in a pressure independent variable air volume (VAV) system. Typically, the zone damper is modulated using an analog signal, providing excellent zone temperature control. A method of providing feedback of zone demand is provided which allows a controller at the rooftop to provide the minimum required amounts of heating and cooling (using economizer when acceptable) based on zone demand.

Because a number of zone dampers can possibly be closed, there needs to be a way to relieve pressure in the supply duct. A bypass damper is normally added in a duct between the supply and return ducts to relieve pressure. The pressure relief damper is normally controlled by sensing supply duct pressure and opening to vent supply air directly to return. This is one difference between a commercial zoning system and true VAV. A true VAV air handler actually varies air volume through the blower.

15 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

VVT makes it possible to operate a single-zone heating/cooling unit with multiple-zones and is often used in smaller buildings. Small buildings are not appropriate for VAV systems because the heating and cooling loads are not large enough for a VAV system to operate properly. VVT systems also cost less than VAV systems due to the use of constant volume packaged units, lower pressure ductwork, and they often do not require expensive perimeter heat. The main difference between VAV and VVT is the fact that VAV systems vary the amount of air entering a zone and not the temperature, where a VVT system varies both the amount of air and the temperature of the air entering the zone.

6LQJOH=RQH5RRIWRS$LU+DQGOLQJ8QLW&RQWURO &9$+8

Single-zone systems use a Constant Volume Air-Handling Unit (CVAHU) which are usually factory-packaged units mounted on the rooftop of the building, however, single zone air handling units can also be located in a mechanical room of buildings. Single zone units are used in smaller buildings, buildings that have a uniform heating/cooling load in large open zones, or in zones that have special comfort requirements that are different from other areas of the building. The building must also have the space available for the associated air handling equipment. Typical installations include; office/warehouse buildings, large open buildings such as supermarkets, restaurants, and ballrooms and lobbies of large buildings and hotels. Since single zone units are associated with only one zone, many single zone air handling units can be installed in a building. Fan volume control, as found in Variable Air Volume systems is not required, because fan volume and duct static pressure are set by the manufacturer to meet the design needs of the zone.

Temperature and Ventilation Control

A single space controller or thermostat controls the heating coil, ventilation dampers, and cooling coil in sequence as thermal load varies in the conditioned space. On rooftop mounted units the heating coils are typically electric and the cooling is by a self contained air-conditioning system using direct expansion cooling coils. However, single zone air handling systems that are located in a mechanical room of a building often employ hot water (hydronic) heating coils and use chilled water coils for cooling. The ventilation dampers (Outdoor air, Return air, and Exhaust air) are controlled to use outdoor air for the first-stage cooling when the conditions are appropriate. When outdoor air temperature or heat content (enthalpy) rises to the point that it can no longer be used for cooling, an outdoor air limit control overrides the signal to the ventilation dampers and moves them to the minimum ventilation position, as determined by the minimum positioning switch or the minimum position setpoint in the controller. Indoor air quality control is also accomplished with the Single Zone controller using sensors and control strategies that increase the minimum position of the outdoor air damper to allow more fresh air into the building when the indoor air quality is poor. A zero energy band often separates the heating and cooling control ranges, thus saving energy.

8QLWDU\(TXLSPHQW&RQWURO

Unitary equipment includes natural convection units, radiant panels, unit heaters, unit ventilators, fan coil units, and heat pumps. Unitary equipment does not require a central fan. Depending on design, unitary equipment may perform one or all of the functions of HVAC - ventilation, filtration, heating, cooling, humidification and distribution. Unitary equipment frequently requires a distribution system for steam or hot and/or chilled water.

Control of unitary equipment varies with system design. Typically, a room thermostat provides a signal to a controlled device to regulate the unit. The unit may use a day/night thermostat for operation at lower setpoints during unoccupied hours. If the unit has a fan, a time clock may be used to turn the fan off at night, and a night thermostat may be used to control the temperature within night limits. When DDC control is used all of the thermostat and time clock functionality is contained in the controller.

&RQVWUXFWLRQ

&RQWUROOHUV

The Excel 10 VAV Controller is available in four different models. The W7751B circuit board is ready to be snapped into a section of standard 3.25 in. (82 mm) by 9 in. (228 mm) snaptrack, part number 207912. The W7751B model is intended for OEM installation on VAV boxes at the factory. Connections to the wall module terminals (19 through 23) and the E-Bus communications terminals (29 and 30) are made at screw terminal blocks. Connection for access to the E-Bus is provided by plugging the connector into the communications jack. All other connections are made with quarter inch (6.35 mm) quick connects. See Fig. 4.

The W7751D and W7751F models both use the identical 5 in. by 5 in. circuit board contained in the housing cover. This cover can plug into either the W7751D or F Subbase. The W7751D Subbase allows screw terminations to be made on the inside. This subbase either mounts on a standard 4 in. by 4 in. or a standard 5 in. by 5 in. electrical junction box. It can also be snapped onto standard EN 50 022 DIN rail 35 mm by 7.5 mm (1-3/8 in. by 5/16 in.). For W7751D, see Fig. 5. The W7751F Subbase provides screw terminations to be made on the outside. This subbase either mounts on a panel with screws or snaps onto standard EN 50 022 DIN rail 35 mm by 7.5 mm (1-3/8 in. by 5/16 in.). DIN rail is available through local suppliers. Wires are attached to screw terminal blocks on the top and bottom of the subbase. For W7751F, see Fig. 6.

The W7751H Smart VAV Actuator is a physically smaller Excel 10 VAV Controller. The controller enclosure, which contains the controller circuit board, is constructed of a sheet metal housing and a plastic snap-on cover. The sheet metal housing is attached at the factory to the ML6161B Actuator and has two 1/2 in. (13 mm) knockouts that are compatible with 1/2 in. (13 mm) or 3/4 in. (19 mm) conduit, see Fig. 7. The actuator on the Smart VAV Actuator is field mounted to the VAV box damper shaft and its controller wiring is terminated to screw terminals located at the bottom under a snap-on cover.

74-2949–1 16

CAUTION

W7751B,D,F Controllers must be mounted vertically as shown in Fig. 4 through 6. Vertical mounting assures adequate air flow for proper heat dissipation in the controller.

The W7751H Smart VAV Actuator is intended for horizontal shaft mounting only for heat dissipation needs.

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

1-3/32

(28)

4 X 4

MOUNTING

HOLES

3/4 (19)

IMPORTANT

If controller flow sensors are connected to unusually dusty or dirty environments, a 5-micron disposable air filter is recommended for use in the high pressure line (marked as air flow pickup. This applies to all controller models. See Table 10 for filter ordering information.

(76)

Fig. 4. W7751B construction in in. (mm).

) connected to the

∆P

–

9 (228)

W7751B

KEEP WIRING ROUTED AWAY FROM THIS HIGH

RADIATION AREA TO AVOID INTERFERENCE PROBLEMS WITH OTHER EQUIPMENT.

M11820

5 X 5

MOUNTING

HOLES

1-1/2

(38)

2-11/32 (60)

1/2

(13)

4-21/32 (118)

3-7/16

(87)

1-3/32

(28)

1-3/8 (35)

DIN RAIL

MOUNTING

SLOT

M11821

Fig. 5. W7751D construction in in. (mm).

17 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

5 X 5

MOUNTING

HOLES

1-1/2

(38)

2-11/32 (60)

1/2

(13)

1-3/32

(28)

4 X 4

MOUNTING

HOLES

4-21/32 (118)

3/4

(19)

3-7/16

(87)

1-3/32

(28)

1-3/8 (35)

DIN RAIL

MOUNTING

SLOT

M11822

Fig. 6. W7751F construction in in. (mm).

74-2949–1 18

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

MAINTAIN A MINIMUM DISTANCE OF 3 IN. (76 MM) FROM OTHER DEVICES OR PANELS FOR REMOVING CONTROLLER COVER

1-13/16 (46)

1-5/16 (33)

DE-CLUTCH LEVER

3-3/4 (95)

MAINTAIN A MINIMUM DISTANCE OF 4 IN (100 MM) FROM OTHER DEVICES OR PANELS FOR ATTACHING PNEUMATIC AIR FLOW TUBING

60°

4-1/16 (103)

CCW

45°

3-5/8 (92)

CCW

45°

(25)

60°

1-13/16

(46)

5-7/8 (149)

Fig. 7. W7751H construction in in. (mm).

Performance Specifications Power:

24 Vac with a minimum of 20 Vac and a maximum of 30 Vac at either 50 or 60 Hz.

CPU:

Motorola or Toshiba 3150 Neuron processor, containing three eight-bit CPU’s. Each Neuron has a unique 48-bit network identification number.

Memory Capacity:

64K ROM/PROM in W7751B,D,F,H 512 EEPROM 2K RAM

Specified Space Temperature Sensing Range:

45° to 99°F (7° to 37°C) with an allowable control setpoint range from 50° to 90°F (10° to 32°C) when initiated from the network and 55° to 85°F (13° to 29°C) when configured and connected to a T7770 Wall Module or T7780 DDWM.

3-3/4

(95)

2-1/8

(54)

3/4

(19)

DE-CLUTCH LEVER

1-15/16 (49)

3/4

(19)

M10523

Communications

The W7751B,D,F,H Controller uses a transformer-coupled communications port with differential Manchester-encoded data at 78 kilobits per second (kbs). The transformercoupled communications interface offers a much higher degree of common-mode noise rejection while ensuring dc isolation.

Approved cable types for E-Bus communications wiring is Level IV 22 AWG (0.34 mm

) plenum or non-plenum rated unshielded, twisted pair, solid conductor wire. For nonplenum areas, U.S. part AK3781 (one pair) or U.S. part AK3782 (two pair) can be used. In plenum areas, U.S. part AK3791 (one pair) or U.S. part AK3792 (two pair) can be used (see Tables 9 and 10 for part numbers). Contact Echelon Corp. Technical Support for the recommended vendors of Echelon approved cables.

19 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

The FTT supports a polarity insensitive, free topology wiring scheme that supports star, loop, and/or bus wiring. The maximum bus length when using a combination of star, loop, and bus wiring (singly terminated) is 1640 ft (500m) with the maximum node to node length of 1312 ft (400m). In the event that the limits on the number of nodes or total wire length is exceeded, then a 2-way repeater (Q7740A) can be used to double the node count and the network length or a 4-way repeater (Q7740B) can quadruple the node count and the network length. The maximum number of repeaters per segment is one. A Q7751A E-Bus Router can also be used to effectively double the maximum bus length. The advantage of using the router is that it will segregate traffic to a segment whereas with the repeater all traffic is repeated on each segment. On a doubly terminated E-Bus utilizing bus wiring (continuous daisy-chain with no stubs or taps from the main backbone) the maximum bus length is 4593 ft (1400m) with the maximum node to node length of 3773 ft (1150m).

FTT networks are very flexible and convenient to install and maintain, but it is imperative, to carefully plan the network layout, and create and maintain accurate documentation. Unknown or inaccurate wire run lengths, node to node distances, node counts, total wire length, and misplaced or missing terminators can cause poor network performance. Refer to E-Bus Wiring Guidelines form, 74-2865 for complete description of network topology rules.

LonMark Functional Profile

W7751 Controllers support the LonMark Functional Profile number 8010 VAV Controller, version 1.0 (see Fig. 8).

Environmental

nviSpaceTemp

nv1

SNVT_temp_p

nviSetPoint

nv2

SNVT_temp_p

nviApplicMode

nv5

SNVT_hvac_mode

nviManOverride

nv6

SNVT_hvac_overid

nviSetpointOffset

nv7

SNVT_ temp_p

nviOccCmd

nv8

SNVT_occupancy

nviEnergCmd

nv9

SNVT_hvac_energ

nviBoxFlow

nv10

SNVT_ flow

nviEnergyHoldOff

nv11

SNVT_switch

nviFanSpeed

nv12

SNVT_switch

nviCO2

nv13

SNVT_ppm

nviHeaterOverid

nv14

SNVT_switch

nviDuctIn Temp

nv15

SNVT_temp_p

Hardware

Outputs

VAV Device

Object Type # 8010

Mandatory Network Variables

Optional Network Variables

nvoSpaceTemp

nv3

SNVT_ temp_p

nvoUnitStatus

nv4

SNVT_hvac_status

nvoEffectSetPt

nv16

SNVT_ temp_p

nvoFlowControlPt

nv17

SNVT_ flow

nvoBoxFlow

nv18

SNVT_ flow

nvoTerminalLoad

nv19

SNVT_lev_percent

nviEnergyHoldOff

nv20

SNVT_switch

Operating Temperature:

-40° to 150°F (-40° to 65.5°C).

Shipping Temperature:

-40° to 150°F (-40° to 65.5°C).

Relative Humidity:

5 percent to 95 percent noncondensing.

Vibration:

Rated V2 level compliant.

Hardware:

The Excel 10 VAV Box Controllers are available in four models, the W7751B circuit board only, W7751D Plenum version with internal screw connections an the subbase for conduit installations, W7751F Plenum version with external screw connections on the subbase for nonconduit installations, and the W7751H Smart VAV Actuator which in an Excel 10 VAV Box Controller mounted and wired to a ML6161B (90 second) actuator.

Configuration Properties

nc49 - Send Heartbeat (mandatory) nc60 - Occupancy Temperature Setpoints

nc52 - Minimum Send Time nc17 - Location nc46 - Duct Area nc54 - Minimum Flow nc51 - Maximum Flow (mandatory) nc55 - Minimum Flow for Heat nc56 - Minimum Flow Standby nc57 - Nominal Flow nc66 - VAV gain

(mandatory)

(optional)nc48 - Maximum Receive Time (optional) (optional) (optional)

(mandatory)

(optional) (optional) (optional) (optional)

Manufacturer

Defined Section

Hardware

Input

M11823

Fig. 8. Functional profile of LonMark compliant VAV

object details (variables not implemented in Excel 10

VAVII are greyed).

74-2949–1 20

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Inputs/Outputs

The W7751B,D,F and H controllers have the following inputs and outputs:

Analog inputs - 4 total on W7751B,D,F, 3 total on

W7751H.

Space temperature sensor (fixed location) - T7770 A

through D or T7780 DDWM

Duct velocity pressure sensor (fixed location)-

Microbridge 0-2 inch velocity pressure sensor

Configurable analog input options, 2 from the 3 listed below on W7751B,D,F,

1 from the 3 listed below for

W7751H.

•

Setpoint Potentiometer: 55° to 85°F (13° to 29.5°C) )—(9846 to 1290 ohms).

•

Discharge Air Temperature Type: RTD (NTC). Supported Sensors: C7770A1006, C7031C1031, C7031B1033, C7031J1050.

•

Supply Air Temperature Type: RTD (NTC). Supported Sensors: C7770A1006, C7031C1031, C7031B1033.

NOTE: The C7770 or C7031 Air Temperature Sensors or

Digital Inputs

5 total on W7751B,D,F, 1

the wall module Bypass pushbutton)

are sensed using a 9 milliamp at 4.8 volts detection circuit. It is very important that the device used contains high quality, non-corroding contacts with resistivity that does not degrade; that is, increase over time. Use noble metal (such as gold or silver), pimpled or sealed contacts to assure consistent, long-term operation.

•

the setpoint potentiometer options are selectable in CARE/E-Vision. (Either one or the other, but not both are allowed on the W7751H.)

on the W7751H (reserved for

. Dry-contact inputs

Wall Module Bypass Pushbutton—Momentary DI (Fixed location - See Appendix B—Sequences of Operation for bypass details.) Hardware test (Fixed location - not available on the W7751H). Three of the following Digital Inputs (DIs) can be configured when using the W7751B,D,F, (not available on the W7751H): Window Monitor—Contact Closed = Window is Closed Occupancy Switch—Contact Closed = Room is Occupied; Contact Open = Room is Unoccupied Heat/Cool change over—Contact Closed = Heat Monitoring input—Contact Closed = input off or closed (input reportable on network).

Digital Outputs:

8 total on W7751B,D,F (configurable locations), 4 total on W7751H (2 fixed position damper outputs and 2 configurable outputs). Configurable digital output options.



Floating damper open (fixed location on W7751H)



Floating damper closed (fixed location on W7751H)



Reheat types Reheat (floating) valve open Reheat (floating) valve closed PWM Stage 1 Stage 2 or Three stage binary control Stage 3 (not available on W7751H)



Peripheral Heating types Peripheral heat (floating) valve open Peripheral heat (floating) valve closed PWM Stage 1



Fan (Series or Parallel) On/Off PWM



Auxiliary (On when occupied, Off when unoccupied or Standby) Normal (On/Off) Pulsed (requires two pairs open and closed)



Network (up to 2 outputs commanded from the network) Normal (On/Off) Pulsed (requires two pairs open and closed)

Triac Outputs on the W7751B,D,F Model:

Power ratings: 20 Vac to 30 Vac at 25 mA MIN to 1.0A

MAX current for any voltage.

(For W7751H, a minimum of 25 mA at 20 Vac and a

maximum of 400 mA at 30 Vac.)

CAUTION

When any device is energized by a Triac, the device must be able to sink a minimum of 25 mA.

NOTE: Triacs sink current to the 24 Vac common

LED:

(For Wall Module LED only) 2.5V at 3 mA.

(terminals 10 on the W7751B model, see Fig. 60, or terminals 2 and 4 on the W7751D,F models, see Fig. 66, or terminal 2 on the W7751H model, see Fig. 72). The controller and all Triac loads must be wired to the same 24 Vac source.

IMPORTANT:

If non-Honeywell motors, actuators, or transducers are to be used with Excel 10 Controllers, Triac compatibility must be verified (see previous NOTE).

:DOO0RGXOHV

The T7770 Wall Module for the Excel 10 Controller is available in a variety of configurations (see Product Names section). The models are shown in Fig. 9.

21 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

3-5/32 (80)

KNOCKOUTS FOR EUROPEAN APPLICATIONS

29/32 (23)

5-1/16 (128)

3-5/32 (80)

KNOCKOUTS FOR EUROPEAN APPLICATIONS

1-1/4 (32)

5-1/16 (128)

2-3/8 (60)

STANDARD UTILITY CONDUIT BOX (2 X 4) MOUNTING HOLES

9 8 7 6 5 4 3 2 1

W7752

DIP Switch S4 Settings:

XL600-XL20

LED

LED RETURN

SETPT

SENSOR

GND

BYPASS/FAN BYPASS/FAN

SETPT

SENSOR

AL COM

T7770A1006

W7753

BYPASS

LED

FAN

SETPT

SENSOR

1,3,5=on; 2,4=off 2,4=on; 1,3,5=off 1,2,3,4=on; 5=0ff

GND

Fig. 9. T7770A,B,C,D construction in in. (mm) sensor only.

E-BUS

T7770C

2-3/8 (60)

STANDARD UTILITY CONDUIT BOX (2 X 4) MOUNTING HOLES

M15119

74-2949–1 22

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

3-5/32 (80)

2-3/8 (60)

KNOCKOUTS FOR EUROP EAN APPLICATIONS

2-3/8 (60)

STANDARD UTILITY CONDUIT BOX(2 BY 4) MOUNTING HOLES

1 (25)

5-1/16 (128)

6HQVRU'XFW0RXQW

The C7770A Air Temperature Sensor is used for duct temperature sensing with Excel 10 Controllers (see Product Names section). The C7770A Air Temperature Sensor is shown in Fig. 11.

&RQILJXUDWLRQV

*HQHUDO

Table 4 provides an overview of the Excel 10 VAV Controller configuration options. All VAV boxes are assumed to have an air flow pickup for connecting to the Microbridge flow through pressure sensor on the Excel 10 VAV Controller. Also, each box must have a flowregulating damper that is controlled by a Series 60 (floating) type actuator such as the Honeywell ML6161 or a PWM type actuator. Table 5 lists the general mechanical equipment options available with the W7751 VAV Box Controller. See Table 1 for Excel 10 VAV Box Controller capabilities. See Application Step 6. Configure Controllers for further information on configurations.

CAUTION

The Excel 10 VAV Controller is designed to work with Series 60 (floating) Damper Actuators that have a full stroke damper actuator time between 20 and 600 seconds (0.333 to 10 minutes) or PWM Damper Actuators that have a minimum time (zero percent) of 0.1 second and a maximum overall time of 600 seconds (0.1 second to 10 minutes).

The W7751H Excel 10 VAV Controller is designed to work only with the Series 60 (floating) Damper Actuator (ML6161B) that has a full stroke damper actuator time of 90 seconds.

M11751

Fig. 10. T7780 construction in in. (mm) sensor.

1-1/2 (38)

3/4 (19)

1/4 (6) DIAMETER (2 HOLES)

7/8

(22)

8-1/2 (216)

1/2 (13)

Fig. 11. C7770A construction - in. (mm).

1/2 (13)

1/2 IN. (13) DIAMETER

3/8 IN. (10) DIAMETER

6-5/32 (156)

3-1/2 (89)

M7724

23 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Table 4. Excel 10 VAV Box Controller Capability.

Excel 10 VAV Box

Controller Capability W7751B,D,F W7751H

Fan

None X X Series X X Parallel Temp X X Parallel Flow X X Parallel PWM X X

Reheat

None X X One Stage Reheat X X** Two Stages or Three Stage

Binary Control Reheat Three Stages Reheat X — One Stage Periph X X** Floating Reheat (Two outputs) X X** Floating Periph (Two outputs) X X** Floating Reheat then Periph

(Four outputs) Floating Periph then Reheat

(Four outputs) PWM Reheat (One output) X X** PWM Periph (One output) X X** PWM Reheat then Periph

(Two outputs) PWM Periph then Reheat

(Two outputs)

Exhaust Tracking

Disabled X X Enabled X X

Occupancy Sensor

None X X Connected X —*

XX**

X—

XX**

Excel 10 VAV Box

Controller Capability W7751B,D,F W7751H

Window Contact None X X Connected X —*

Wall Module Configuration

Local X X Shared X X

Wall Module Type

Sensor Only X X Sensor and Setpoint X X Sensor, Setpoint and Bypass X X Sensor and Bypass X X

Air Temperature Sensor

20 K ohm air temperature sensors can be used in conjunction with wall modules

Dual Duct Pressure

Independent Flow mixing

Cold and hot duct flow

pickups

Without flow mixing

Cold and hot duct flow

pickups

Constant volume

Cold and hot duct flow

pickups With cold duct pickup only X X Constant volume with

discharge pickup only

Dual Duct Pressure

Dependent

With flow mixing X X Without flow mixing X X

X*** X***

X**** X****

* Available only via the network for the W7751H.

** The W7751H Smart VAV Actuator provides damper control and two configurable outputs available for 2 stages of

reheat, floating reheat (requires two outputs), PWM Reheat or Periph (requires one output), PWM Reheat and Periph (requires two outputs) or 1 stage of reheat or Periph (an be PWM) and a serial or parallel fan.

*** These applications require two W7751 Excel 10 controllers per zone.

**** Flow sensor in discharge air. The temperature control loop controls the cool damper position and the flow controls

adjust the heating damper position.

74-2949–1 24

Option

Fan

Type of Reheat Coil

Type of Peripheral Heat*

Window Open Option

Monitor switch Option

Occupancy Sensor Option

Heat/Cool change over switch Option

Wall Module Option

Wall Module Type

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Table 5. Configuration Options Summary For W7751 Controllers.

Possible Configurations for the W7751B,D,F

1. None 1. None

2. Parallel Temperature 2. Parallel Temperature

3. Parallel Flow 3. Parallel Flow

4. Parallel PWM 4. Parallel PWM

5. Series 5. Series

1. One stage 1. One stage

2. Two stages or Three Stage Binary 2. Two stages or Three Stage Binary

3. Three stages 3. Series 60 Modulating electric valve, or pneumatic

4. Series 60 Modulating electric valve, or pneumatic via transducer.

5. Pulse Width Modulating electric valve, or pneumatic via transducer.

6. None

1. One stage 1. One stage

2. Series 60 Modulating electric valve, or pneumatic via transducer.

3. Pulse Width Modulating electric valve, or pneumatic via transducer.

4. None 4. None

1. None 1. None

2. Local Window Open Digital Input - directly wired to the controller. (Contacts closed means Window Closed.)

3. Network (DestWndw signal received via the E-Bus).

1. None 1. None

2. Local Monitor switch (general purpose) Digital Input -directly wired to the controller. (Contacts closed means that the switch is closed.)

1. None 1. None

2. Local Occupancy sensor Digital Input - directly wired to the controller. (Contacts closed means occupancy sensed.)

3. Network (DestOccSensor signal received via the E-Bus).

1. None 1. None

2. Local Heat/Cool change over switch Digital Input directly wired to the controller. (Contacts closed means select Heat Mode.)

1. Local (direct wired to the box) 1. Local (direct wired to the box)

2. Shared (wired to another box) 2. Shared (wired to another box)

1. Sensor only 1. Sensor only

2. Sensor and Setpoint adjust 2. Sensor and Setpoint adjust

3. Sensor, Setpoint adjust and Bypass 3. Sensor, Setpoint adjust and Bypass

4. Sensor and Bypass 4. Sensor and Bypass

5. None 5. None

Models Possible Configurations for the W7751H Model

via transducer.

4. Pulse Width Modulating electric valve, or pneumatic via transducer.

5. None

2. Series 60 Modulating electric valve, or pneumatic via transducer.

3. Pulse Width Modulating electric valve, or pneumatic via transducer.

2. Network (DestWndw signal received via the E-Bus).

2. Network (DestOccSensor signal received via the E-Bus).

(continued)

25 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Table 5. Configuration Options Summary For W7751 Controllers (Continued).

Option

Air Temperature Sensor

* If both Reheat and peripheral heat are used in the same application:



Both must be same output type such that both are: staged, floating or PWM



The first and second stage ordering is selectable between stage 1 - reheat, stage 2 peripheral or stage 1- peripheral, stage 2 reheat.

** Only 1 Analog input is configurable on the W7751H and only if the T7770A or D (no Space temperature setpoint) Wall

modules are used.

Possible Configurations for the W7751B,D,F

Models Possible Configurations for the W7751H Model

1. Discharge Air Temperature 1. Discharge Air Temperature**

2. Supply Air Temperature 2. Supply Air Temperature**

3. None 3. None

7\SH RI %R[ )DQ

Each VAV box that is controlled by a W7751B,D,F,H can have a series fan (see Fig. 22), a parallel fan (see Fig. 23), or no fan (see Fig. 12). The air temperature sensor cannot be used on the W7751H Smart VAV Actuator with wall modules that have a setpoint.

AIR FLOW SENSOR

PRIMARY AIR

DAMPER ACTUATOR

W7751 CONTROLLER

Fig. 12. VAV box (without fan).

Figs. 13 through 21 illustrate the W7751B,D,F,H VAV Controllers that have a box type of (single duct) with DestHvacMode in (the default of Auto).

Refer to Fig. 13 to see VAV box modes for Pressure_Independent or (Pressure_Dependent), Reheat type Float_Reheat/Float_Periph, Non-Proportional.

REHEAT COIL (OPTIONAL)

DISCHARGE AIR

VALVE

T7770

M11824

100 PERCENT OPEN

REHEAT FLOW

Periph Min Pos

REHEAT MODE

HeatOccSpt

COOLING MODE

CoolOccSpt

MAX FLOW (POS)

MIN FLOW (POS)

M11826

Fig. 13. VAV box modes for Reheat Type

Float_Reheat/Float_Periph, Non-Proportional. (suited

for Peripheral heat control because the Peripheral

output closes to a minimum position (Periph Min Pos)

at HeatOccSpt).

Refer to Fig. 14 to see VAV box modes for Pressure_Independent or (Pressure_Dependent), Reheat type Float_Reheat/Float_Periph, Proportional.

Pressure Type:

Pressure Independent or (Pressure_Dependent)

Reheat Type:

Float_Reheat or Float_Periph

Proportional Reheat Flow:

Enable

Pressure Type:

Pressure Independent or (Pressure_Dependent)

Reheat Type:

Float_Reheat or Float_Periph

Proportional Reheat Flow:

Disable

Periph Min Pos:

Greater than 0%

74-2949–1 26

Periph Min Pos:

Equals 0

REHEAT FLOW

MAX (POS)

MIN (POS)

M11827

100 PERCENT OPEN

HeatOccSpt

CoolOccSpt

Periph Min Pos

REHEAT MODE

COOLING MODE

Fig. 14. VAV box modes for Reheat Type

REHEAT FLOW

M11828

100 PERCENT OPEN

HeatOccSpt CoolOccSpt

REHEAT MODE

COOLING MODE

MAX FLOW (POS)

MIN FLOW (POS)

Periph Min Pos

REHEAT FLOW

M11829

STAGE 3 STAGE 2 STAGE 1

HeatOccSpt CoolOccSpt

MAX FLOW (POS)

MIN FLOW (POS)

REHEAT MODE

COOLING MODE

Float_Reheat/Float_Periph, Proportional. (suited for

Reheat control because the Reheat closes to zero

percent at HeatOccSpt).

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Proportional Reheat Flow:

Enable

Refer to Fig. 15 to see VAV box modes for Pressure_Independent or (Pressure_Dependent),Reheat type Float_Reheat/Float_Periph, Proportional.

Pressure Type:

Pressure Independent or (Pressure_Dependent)

Reheat Type:

Float_Reheat or Float_Periph

Proportional Reheat Flow:

Enable

Periph Min Pos:

Greater than 0%

Fig. 16. VAV box modes for Reheat Type

Elec_ThreeStage - Proportional.

Refer to Fig. 17 to see VAV box modes for Reheat type Elec_ThreeStage - Non-Proportional.

Pressure Type:

Pressure Independent or (Pressure_Dependent)

Reheat Type:

Elec_ThreeStage or (Elec_ThreeStageBin), (Elec_OneStage), (Elec_TwoStage)

Proportional Reheat Flow:

Disable

REHEAT FLOW

REHEAT MODE

COOLING MODE

MAX FLOW (POS)

MIN FLOW (POS)

Fig. 15. VAV box modes for Reheat Type

Float_Reheat/Float_Periph, Proportional. (suited for

Peripheral heat control because the Peripheral output

closes to a minimum position (Periph Min Pos) at

HeatOccSpt).

Refer to Fig. 16 to see VAV box modes for Reheat type Elec_ThreeStage - Proportional.

Pressure Type:

Pressure Independent or (Pressure_Dependent)

Reheat Type:

Elec_ThreeStage or (Elec_ThreeStageBin), (Elec_OneStage), (Elec_TwoStage)

STAGE 3 STAGE 2 STAGE 1

HeatOccSpt CoolOccSpt

Fig. 17. VAV box modes for Reheat Type

Refer to Fig. 18 to see VAV box modes for Reheat type

Elec_ThreeStage - Non-Proportional.

PeriphThenReheat - Proportional.

Pressure Type:

Pressure Independent or (Pressure_Dependent)

Reheat Type:

Float_Periph_Reheat or (PWM_Periph_Reheat)

27 74-2949–1

M11830

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

REHEAT FLOW

MIN FLOW

M11831

PERIPHERAL

HTG

REHEAT

HeatOccSpt CoolOccSpt

100 PERCENT OPEN

REHEAT MODE

COOLING MODE

MAX FLOW (POS)

MIN FLOW (POS)

Periph Min Pos

REHEAT FLOW

MIN FLOW

M11832

PERIPHERAL

HTG

REHEAT

100 PERCENT OPEN

REHEAT MODE

COOLING MODE

HeatOccSpt CoolOccSpt

Periph Min Pos

MAX FLOW (POS)

MIN FLOW (POS)

100 PERCENT OPEN

REHEAT FLOW

MAX FLOW

MIN FLOW

M11825

HeatOccSpt CoolOccSpt

REHEAT MODE

COOLING MODE

Periph Min Pos

Proportional Reheat Flow:

Enable

Periph Min Pos:

0% or greater

Fig. 18. VAV box modes for Reheat type Peripheral

Heating Then Reheat - Proportional

(Float_Periph_Reheat/PWM_Periph_Reheatl).

Refer to Fig. 19 to see VAV box modes for Reheat type ReheatThenPeriph - Proportional.

Reheat Type:

FloatHotDuctPrDep

Proportional Reheat Flow:

Disable

Periph Min Pos:

0% or greater

Fig. 20. VAV box modes for Reheat Type Float_Reheat/Float_Periph, no minimum position, reheat goes to zero percent in cooling mode Non-

proportional (suited for Reheat control because the

Reheat closes to zero percent at HeatOccSpt).

Pressure Type:

Pressure Independent or (Pressure_Dependent)

Reheat Type:

Float_Reheat_Periph or (PWM_Reheat_Periph)

Proportional Reheat Flow:

Enable

Periph Min Pos:

0% or greater

Fig. 19. VAV box modes for Reheat Type Reheat Then

Peripheral Heating Proportional

(Float_Reheat_Periph/PWM_Reheat_Periph).

Refer to Fig. 20 to see VAV box modes for Press_Dependent, Reheat type Float_Reheat/FloatHotDuctPrDep, Non-Proportional.

Refer to Fig. 21 to see VAV box modes for Pressure Dependent, Reheat type Float_Reheat/Float_Periph.

Pressure Type:

Pressure_Dependent

Reheat Type:

Float_Reheat/Float_Periph

Proportional Reheat Flow:

Disable

Periph Min Pos:

0% or greater

100 PERCENT OPEN

REHEAT POS. (DAMPER)

MIN POS.

M11833

Fig. 21. VAV box modes for Pressure Dependent,

REHEAT MODE

HeatOccSpt CoolOccSpt

Reheat Type Float Reheat/Float_Periph.

COOLING MODE

Periph Min Pos

MAX FLOW (POS)

MIN FLOW (POS)

Pressure Type:

Pressure_Dependent

74-2949–1 28

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

A Series fan is intended to run continuously when the main air handler is on and is in-line with the primary air flow through the box. This configuration is sometimes referred to as Variable Volume Supply with Constant Volume Discharge (VVS/CVD).

NOTE: The location of the heating coils can be in the

discharge, as shown in Fig. 22, or in the plenum return.

AIR FLOW SENSOR

PRIMARY AIR

DAMPER ACTUATOR

W7751 CONTROLLER

FAN RELAY

OPEN TO PLENUM

FAN

REHEAT COIL (OPTIONAL)

DISCHARGE AIR

VALVE

M11834

T7770

Fig. 22. Series VAV box fan.

PARALLEL FAN TEMP OPERATION: COOL/REHEAT MODES

OFF

COLD WARM

HeatOccSpt CoolOccSpt

Fig. 24a. Parallel fan temperature operation: for

Cool/Reheat modes.

PARALLEL FAN FLOW OPERATION: COOL/REHEAT MODES

ROOM TEMPERATURE

M11836

A parallel fan, see Fig. 23, is not located in the primary air stream, but is designed to add return air from the plenum into the air stream delivered to the space. The Excel 10 VAV Controller turns on the parallel fan when the space temperature falls below Setpoint as a first stage of reheat (Parallel Temp), or if the air flow falls below a minimum air flow setpoint to maintain a minimum air flow to the space (Parallel Flow).

NOTE: The location of the heating coils can be in the

discharge, as shown in Fig. 23, or as part of the plenum air return, either before or after the fan.

AIR FLOW SENSOR

PRIMARY AIR

W7751 CONTROLLER

DAMPER ACTUATOR

FAN RELAY

FAN

RETURN AIR FROM PLENUM

REHEAT COIL

VALVE

DISCHARGE AIR

T7770

M11835

OFF

FanEnableFlow

SUPPLY FLOW

M11879

Fig. 24b. Parallel fan flow operation: for Cool/Reheat

modes.

Refer to Fig. 25 to see Dual Duct, Pressure Independent, with flow mixing that has cold and hot duct flow pickups.

Fig. 23. Parallel VAV box fan.

See Fig. 24a and 24b to see the Heat/Cool Modes for Parallel Temperature/Flow VAV box fans.

29 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

HOT DUCT SUPPLY AIR

COLD DUCT SUPPLY AIR

FLOW SENSOR

W7751 CONTROLLER MASTER

M11837

W7751 CONTROLLER SATELLITE

DISCHARGE AIR

T7770

SPACE AIR TEMP

Fig. 25. Dual Duct, Pressure Independent, with flow

mixing that has cold and hot duct flow pickups (uses a

satellite Excel 10 for hot duct).

Dual Duct Flow Mixing: (For setup and Calibration refer to the Dual Duct Calibration procedure in Appendix B.)

Master flow configuration:

Master_Flow_Mix

is set to zero. Since during the initial heating load, both the hot and cold duct are supplying air, we have flow mixing.

See Fig. 26 for Heat/Cool Modes for Dual Duct, Pressure Independent, with flow mixing, that has cold and hot duct flow pickups.

COLD DUCT

MAX CLG FLOW SP

MAX HTG FLOW SP

MIN HTG FLOW SP MIN CLG FLOW SP

M11838

HOT DUCT SATELLITE

MIXING ZONE

COLD HOT

HeatOccSpt

(THIS IS THE MIXING ZONE)

MASTER

CoolOccSpt

Fig. 26. Heat/Cool Modes for Dual Duct, Pressure

Independent, with flow mixing, that has cold and hot

duct flow pickups.

See Fig. 27 for Dual Duct, Pressure Independent, without flow mixing, that has cold and hot duct flow pickups.

HOT DUCT SUPPLY AIR

FLOW SENSOR

Master reheat configuration:

DualDuctReheat

Satellite flow configuration:

Satel_Flow_Mix

Satellite reheat configuration:

DualDuctReheat NOTE: SrcMaster from the Master Excel 10 must be

bound to DestSatellite of the Satellite Excel 10 and SrcBoxFlow of the Satellite Excel 10 must be bound to DestFlowTrack of the Master Excel 10 (see Refer Excel 10 Points in Network menu in EVision) in order for this application to function properly.

Dual duct flow mixing uses two control devices, a master (for the cold duct) and a satellite (for the hot duct) to provide pressure independent control. If there is a need for cooling, dual duct flow mixing will control temperature to the cooling setpoint, setting the flow control setpoint for the cold duct between min flow and max flow while setting the hot duct flow setpoint to zero. If the temperature of the space is between the cooling and the heating setpoints, the cold duct will control to the min flow while the hot duct flow is set to zero. If there is a need for heating, the controllers will try to control to the heating setpoint by first modulating the cold duct flow from min flow to zero while simultaneously modulating the hot duct flow from zero to min flow. If there is additional need for heat, the hot duct will modulate from min flow to max flow while the cold duct

DISCHARGE AIR

COLD DUCT SUPPLY AIR

FLOW SENSOR

W7751 CONTROLLER MASTER

M11837

W7751 CONTROLLER SATELLITE

SPACE AIR TEMP

T7770

Fig. 27. Dual Duct, Pressure Independent, without flow

mixing, that has cold and hot duct flow pickups (uses

a satellite Excel 10 for hot duct).

Dual Duct No Flow Mixing: (For setup and Calibration refer to the Dual Duct Calibration procedure in Appendix B.)

Master flow configuration:

Master_No_Flow_Mix

74-2949–1 30

Master reheat configuration:

DualDuctReheat

Satellite flow configuration:

Satel_No_Flow_Mix

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

HOT DUCT SUPPLY AIR

Satellite reheat configuration:

DualDuctReheat NOTE: SrcMaster from the Master Excel 10 must be

Dual duct flow mixing uses two control devices, a master (for the cold duct) and a satellite (for the hot duct) to provide pressure independent control. If there is a need for cooling, dual duct flow mixing will control temperature to the cooling setpoint, setting the flow control setpoint for the cold duct between min flow and max flow while setting the hot duct flow setpoint to zero. If the temperature of the space is between the cooling and the heating setpoints, the cold duct will control to the min flow while the hot duct flow is set to zero. If there is a need for heating, the controllers will try to control to the heating setpoint by first setting the cold duct flow to zero then modulating the hot duct flow from min flow to max flow; During the heating and cooling only one damper is being used at any one time to provide heating or cooling, this provides no flow mixing.

See Fig. 28 for Heat/Cool Modes for Dual Duct, Pressure Independent, without flow mixing that has cold and hot duct flow pickups.

(FLOW SETPOINTS)

MAX COOL

MAX HEAT

MIN COOL

REHEAT

HOT DUCT SATELLITE

COOL

COLD DUCT MASTER

COLD DUCT SUPPLY AIR

W7751 CONTROLLER

M11840

FLOAT REHEAT

FLOW SENSOR

FLOAT DAMPER

DISCHARGE AIR

T7770

SPACE AIR TEMP

Fig. 29. Dual Duct, Pressure Independent cooling,

Pressure Dependent heating with flow mixing that has

cold duct flow pickup.

See Fig. 30 for Heat/Cool Modes for (Reheat = Float Reheat) Dual Duct, Pressure Independent cooling and Pressure Dependent heating, with flow mixing that has cold duct flow pickup.

100 PERCENT POS.

REHEAT MIN FLOW

REHEAT = FLOAT REHEAT

COLD DUCT

MAX

REHEAT FLOW

MIN

MIN HEAT

M11839

COLD HOT

HeatOccSpt CoolOccSpt

Fig. 28. Heat/Cool Modes for Dual Duct, Pressure

Independent, without flow mixing that has cold and

hot duct flow pickups.

See Fig. 29 for Dual Duct, Pressure Independent cooling, Pressure Dependent heating with flow mixing that has cold duct flow pickup.

PeriphPos

M11841

COLD HOT

HeatOccSpt CoolOccSpt

Fig. 30. Heat/Cool Modes for (Reheat = Float_Reheat)

Dual Duct, Pressure Independent cooling and Pressure

Dependent heating, with flow mixing that has cold

duct flow pickup.

Dual Duct Flow Mix: (Pressure independent cooling, pressure dependent heating using one Excel 10.)

Flow configuration:

DD_CDFlowSensor

Reheat configuration:

Float_Reheat

31 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Dual duct flow mixing uses one control device to provide pressure independent control of the cold duct. The Floating Reheat, which is traditionally wired to a heating valve actuator, is wired to a hot duct damper instead. PeriphPos is used to set the minimum hot duct damper position, which applies during both reheat and cooling modes. Flow mixing is achieved by mixing hot duct and cold duct air, which takes place during the cooling mode when minimum hot duct position is not zero (PeriphPos), or during the reheat mode if the cold duct Reheat Flow value is not zero.

See Fig. 31 for Heat/Cool Modes for (Reheat = Float Hot Duct Pressure Dependent) Dual Duct, Pressure Independent cooling and Pressure Dependent heating, with flow mixing that has cold duct flow pickup.

100 PERCENT POS.

REHEAT MIN FLOW

PeriphPos

REHEAT = FLOAT REHEAT

COLD DUCT

MAX

REHEAT FLOW

MIN

HOT DUCT SUPPLY AIR

COLD DUCT SUPPLY AIR

FLOW SENSOR

W7751 CONTROLLER MASTER

M11837

W7751 CONTROLLER SATELLITE

DISCHARGE AIR

T7770

SPACE AIR TEMP

Fig. 32. Dual Duct, Pressure Independent cooling and heating, constant volume with hot and cold duct flow

pickups.

M11841

COLD HOT

HeatOccSpt CoolOccSpt

Fig. 31. Heat/Cool Modes for (Reheat =

FloatHotDuctPrDep) Dual Duct, Pressure Independent

cooling and Pressure Dependent heating, with flow

mixing that has cold duct flow pickup.

Dual Duct Flow Mix: (Alternate Configuration)

Flow configuration:

DD_CDFlowSensor

Reheat configuration:

FloatHotDuctPrDep This configuration is the same as the previous description,

however, setting PeriphPos to a minimum hot duct position that only applies during reheat mode. During cooling mode, the hot duct damper goes to zero, thus conserving energy. Flow mixing is achieved by mixing hot duct and cold duct air during the reheat mode when the cold duct Reheat Flow value is not zero.

See Fig. 32 for Dual Duct, Pressure Independent cooling and heating, constant volume with hot and cold duct flow pickups.

Dual Duct Constant Volume: (For setup and Calibration refer to the Dual Duct Calibration procedure in Appendix B.)

Master flow configuration:

Master_Const_Flow

Master reheat configuration:

DualDuctReheat

Satellite flow configuration:

Satel_Const_Flow

Satellite reheat configuration:

DualDuctReheat NOTE: SrcMaster from the Master Excel 10 must be

Dual duct flow mixing uses two control devices, a master (for the cold duct) and a satellite (for the hot duct) to provide pressure independent control. The dual duct constant volume application tries to control the space to the cooling setpoint only. During unoccupied, the controller will try to control the temperature to either the unocc heating (if the space temperature is less than the unocc heating setpoint) or unocc cooling setpoint(if the space temperature is greater than the unocc cooling setpoint). The controller is always in cooling mode, adjusting the cool air from min flow to max flow while simultaneously adjusting the warm air from max flow to min flow.

74-2949–1 32

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

See Fig. 33 for Heat/Cool Modes for Dual Duct, Pressure Independent cooling and heating, constant volume with hot and cold duct flow pickups.

(FLOW SETPOINTS)

MAX COOL

MAX HEAT

MIN COOL

MIN HEAT

M11843

COLD HOT

COOLING MODE

COLD FLOW

CoolOccSpt

Fig. 33. Heat/Cool Modes for Dual Duct, Pressure

Independent cooling and heating, constant volume

with hot and cold duct flow pickups.

See Fig. 34 for Dual Duct, Pressure Dependent cooling and heating, with Flow mixing and no flow pickups.

HOT DUCT SUPPLY AIR

COLD DUCT SUPPLY AIR

W7751 CONTROLLER

FLOAT REHEAT

FLOAT DAMPER

DISCHARGE AIR

T7770

SPACE AIR TEMP

HOT DUCT 100 PERCENT POS.

Periph Min Pos

M11845

REHEAT FLOW

COLD HOT

HeatOccSpt CoolOccSpt

COLD DUCT

MAX POS.

MIN POS.

Fig. 35. Heat/Cool Modes for (Reheat = Float Reheat) Dual Duct, Pressure Dependent cooling and heating,

with flow mixing with no flow pickups.

Dual Duct Press Flow Mix: (Pressure dependent cooling and heating using one Excel 10.)

Flow configuration:

DD_NoFlowSensor

Reheat configuration:

Float_Reheat Dual duct flow mixing uses one control device to provide

pressure dependent control of the cold and hot ducts. The Floating Reheat, which is traditionally wired to a heating valve actuator, is wired to a hot duct damper instead. PeriphPos is used to set the minimum hot duct damper position, which applies during both reheat and cooling modes. Flow mixing is achieved by mixing hot duct and cold duct air, this takes place during the cooling mode when minimum hot duct position is not zero, or during the reheat mode if the cold duct Reheat Flow value is not zero.

See Fig. 36 for Heat/Cool Modes for Dual Duct, Pressure Dependent cooling and heating, with Flow mixing and no flow pickups.

REHEAT = FloatHotDuctPrDep

HOT DUCT 100 PERCENT OPEN

COLD DUCT

MAX POS.

M11844

NO FLOW PICKUPS

Fig. 34. Dual Duct, Pressure Dependent cooling and

heating, with Flow mixing and no flow pickups.

See Fig. 35 for Heat/Cool Modes for (Reheat = Float Reheat) Dual Duct, Pressure Dependent cooling and heating, with flow mixing that has cold duct flow pickup.

PeriphPos

MIN POS.

REHEAT MIN POS

M11846

COLD HOT

HeatOccSpt CoolOccSpt

Fig. 36. Heat/Cool Modes for Dual Duct, Pressure

Dependent cooling and heating, with Flow mixing and

no flow pickups.

33 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Dual Duct Press Flow Mix: (Alternate Configuration) Flow configuration:

DD_NoFlowSensor

Reheat configuration:

FloatHotDuctPrDep This configuration is the same as the previous description,

See Fig. 37 for Dual Duct, Pressure Independent discharge, with Constant Volume and Discharge air flow pickup.

HOT DUCT SUPPLY AIR

FLOAT REHEAT

FLOW SENSOR

DISCHARGE AIR

high with a small heating flow capacity will not let the cold damper go to zero during a high demand for heat.)

See Fig. 38 for Heat/Cool Modes for Dual Duct, Pressure Independent Cooling and Pressure Dependent Heating, with Constant Volume and Discharge air flow pickup.

MAX. FLOW CONTROLS COLD FLOW

HOT DUCT 100 PERCENT POS.

TEMP CONTROLS HOT DAMPER POSITION

COLD HOT

HeatOccSpt CoolOccSpt

COLD DUCT

MAX FLOW (TOTAL FLOW)

Periph Min Pos

M11848

Fig. 38. Heat/Cool Modes for Dual Duct, Pressure

Independent Cooling and Pressure Dependent

Heating, with Constant Volume and Discharge air flow

pickup.

See Fig. 39 for Dual Duct, Pressure Dependent cooling and heating, with no Flow mixing and no flow pickups.

COLD DUCT SUPPLY AIR

W7751 CONTROLLER

M11847

FLOAT DAMPER

SPACE AIR TEMP

T7770

Fig. 37. Dual Duct, Pressure Independent discharge,

with Constant Volume and Discharge air flow pickup.

Dual Duct Discharge Sensor Constant Volume (pressure independent discharge using one Excel 10).

Flow configuration:

DD_DAFlowSenConst

Reheat configuration:

Float_Reheat Dual duct flow mixing uses one control device to provide

pressure independent control of the cold duct and total discharge air. In this control sequence, the temperature sensor controls the Hot duct damper position from the PeriphPos minimum hot duct position to the 100 percent position. The discharge flow sensor, which picks up the cumulative flow of both the cold and hot duct air flows, is used to determine the total flow of air. This total flow of air is used to control the cold duct damper, using whatever amount of cold air is necessary to maintain a single flow value of MaxFlow. (Be aware that setting the Max flow too

HOT DUCT SUPPLY AIR

COLD DUCT SUPPLY AIR

W7751 CONTROLLER

M11844

FLOAT REHEAT

FLOAT DAMPER

NO FLOW PICKUPS

DISCHARGE AIR

SPACE AIR TEMP

Fig. 39. Dual Duct, Pressure Dependent cooling and

heating, with no Flow mixing and no flow pickups.

Dual Duct Press Flow Mix (pressure dependent cooling and heating using one Excel 10).

Flow configuration:

DD_NoFlowSensor

Reheat configuration:

FloatHotDuctPrDep

T7770

74-2949–1 34

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Dual duct flow mixing uses one control device to provide pressure dependent control of the cold and hot ducts. The Floating Reheat, which is traditionally wired to a heating valve actuator, is wired to a hot duct damper instead. PeriphPos will be set to a minimum hot duct position that only applies during reheat mode. During cooling mode, the hot duct damper goes to zero, thus conserving energy. Flow mixing is avoided by setting the cold duct Reheat Flow Value to zero. The minimum flow value to the space will be the minimum hot duct damper position during reheat mode or the cold duct min position during cooling.

See Fig. 40 for Heat/Cool Modes for Dual Duct, Pressure Dependent cooling and heating, with no Flow mixing and no flow pickups.

HOT DUCT 100 PERCENT POS.

Periph Min Pos

COLD REHEAT POS. = ZERO PERCENT

M11849

COLD HOT

HeatOccSpt CoolOccSpt

COLD DUCT MAX DAMPER

POS.

MIN DAMPER POS.

Dual Duct Pressure Independent (pressure independent heating and cooling using one Excel 10).

Flow configuration:

DD_DAFlowSensor.

Reheat configuration:

Float_Reheat Dual duct flow mixing uses one control device to provide

pressure independent control of the cold and hot ducts. The Floating Reheat, which is traditionally wired to a heating valve actuator, is wired to a hot duct damper instead. During reheat mode, only the hot duct damper is controlled and the cold duct is closed. During the cooling mode, only the cold duct damper is controlled, and the hot duct is closed.

See Fig. 42 for Heat/Cool Modes for Dual Duct, Pressure Independent Heating and Cooling, with Discharge air flow pickup.

MAX FLOW

REHEAT MODE

COOLING MODE

MAX

COLD DUCTHOT DUCT

FLOW

Fig. 40. Heat/Cool Modes for Dual Duct, Pressure

Dependent cooling and heating, with no Flow mixing

and no flow pickups.

See Fig. 41 for Dual Duct, Pressure Independent Heating and Cooling, with Discharge air flow pickup.

HOT DUCT SUPPLY AIR

COLD DUCT SUPPLY AIR

W7751 CONTROLLER

FLOAT REHEAT

FLOAT DAMPER

FLOW SENSOR

DISCHARGE AIR

T7770

SPACE AIR TEMP

MIN FLOW

COLD HOT

HeatOccSpt CoolOccSpt

M11850

Fig. 42. Heat/Cool Modes for Dual Duct, Pressure

Independent Heating and Cooling, with Discharge air

flow pickup.

See Fig. 43 for Single Duct, Pressure Independent Cooling, with PWM Parallel Fan.

PARALLEL FAN

RETURN AIR

FLOW SENSOR

SUPPLY AIR 55 DEGREES F

M11851

FROM PLENUM

FLOAT DAMPER

W7751 CONTROLLER

DISCHARGE AIR

SPACE AIR TEMP

T7770

M11847

Fig. 41. Dual Duct, Pressure Independent Heating and

Cooling, with Discharge air flow pickup.

Fig. 43. Single Duct, Pressure Independent Cooling,

with PWM Parallel Fan.

35 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

PWM fan.

Use this only with single duct configurations. The PWM fan is a variable fan that controls the amount of return air or return plenum air to the space. The PWM fan acts in opposite to the cooling duct damper position for pressure dependent operation, or in opposite to the cooling duct flow for pressure independent.

See Fig. 44 for Modes for Single Duct, Pressure Independent Cooling, with Parallel Fan.

See Fig. 45 for Exhaust Tracking Flow Control.

COLD DUCT SUPPLY AIR

nvoFLOW TRACK

FLOW SENSOR

DISCHARGE AIR

W7751 CONTROLLER NUMBER1

MAX FLOW

MIN FLOW

COLD

PWM FAN 100 PERCENT

HeatOccSpt CoolOccSpt

COLD DUCT

Fig. 44. Modes for Single Duct, Pressure Independent

Cooling, with Parallel Fan.

T7770

SPACE AIR TEMP

HOT

MAX FLOW

MIN FLOW

M12800

nviFLOW TRACK

nvoFLOW TRACK

nviFLOW TRACK

FLOW SENSOR

nvoFLOW TRACK

DISCHARGE AIR

W7751 CONTROLLER NUMBER1

DISCHARGE AIR

W7751 CONTROLLER NUMBER1

T7770

SPACE AIR TEMP

FLOW SENSOR

nviFLOW TRACK

EXHAUST AIR

W7751 CONTROLLER NUMBER1

M12801

Configuration of Box Type, Flow Type

Box Type Flow Type Excel 10 VAV number 1 =Single_Duct SD_Normal_Flow Excel 10 VAV number 2 =Single_Duct SD_Normal_Flow Excel 10 VAV number 3 = Single_Duct SD_Normal_Flow Excel 10 VAV number 4 = Flow_Tracking FLOW_Tracking

Bind the SrcFlowTrack of controller number 1 to the DestFlowTrack of number 2, the SrcFlowTrack of number 2 to the DestFlowTrack of number 3, the SrcFlowTrack of number 3 to the DestFlowTrack of number 4. See Refer Excel 10 Points in Network menu in E-Vision.

Fig. 45. Exhaust Tracking Flow Control.

See Fig. 46 for Share Wall Module.

74-2949–1 36

COLD DUCT SUPPLY AIR

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

SrcMaster

DestSatellite

FLOW SENSOR

DISCHARGE AIR

W7751 CONTROLLER NUMBER 1

DISCHARGE AIR

W7751 CONTROLLER NUMBER 2

DISCHARGE AIR

W7751 CONTROLLER NUMBER 3

T7770

SPACE AIR TEMP

DISCHARGE AIR

RETURN AIR PLENUM

FLOW SENSOR

W7751 CONTROLLER NUMBER 4

DestSatellite

M11865

Flow Type Box Type Wall Module Type

Configuration of VAV Controllers for Share Wall Module.

Excel 10 VAV number 1 = SD_Normal_Flow Single_Duct Sensor_Setpoint Excel 10 VAV number 2 = Shared_Cntrl Single_Duct No_Sensor Excel 10 VAV number 3 = Shared_Cntrl Single_Duct No_Sensor Excel 10 VAV number 4 = Shared_Cntrl Single_Duct No_Sensor Bind SrcMaster of VAV number 1, as Source controller, (see Refer Excel 10 Points in Network menu in E-Vision) to the DestSatellite of VAV number 2 through VAV number 4, as the Destination Excel 10’s. Refer to the Share Wall Module under section on Wall Module Options for additional rules and cautions on using the Share Wall Module option.

NOTE: See Fig. 51 for sharing a T7780 DDWM.

Fig. 46. Share Wall Module.

T7780 DDWM Binding for VAVII Controllers

Source Controller Destination Controller DDWM SrcRmTemp VAVII DestRmTemp

DDWM SrcRmTempSpt VAVII DestRmTempSpt DDWM SrcHvacMode VAVII DestHvacMode DDWM SrcManualOcc VAVII DestManualOcc VAVII SrcRmTempSpt DDWM DestRmTempActSpt VAVII SrcUnitStatus DDWM DestUnitStatus

VAVII Configuration Wall Module Type: No_Sensor

Flow Type: SD_Normal_Flow

Refer to the Binding Guide for T7780 DDWM in E-Vision Help (Tables 13, 14 ,15) for additional binding information for binding the T7780 to the VAVII and other Excel 10 Controllers.

37 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

7\SHRI5HKHDW&RLO

Each VAV box can contain a coil(s) for reheating the air delivered to the space. The Excel 10 VAV Controller can control staged electric heat elements, solenoid valves, PWM, Series 60 (floating) or pneumatic modulating valves.

NOTE: Pneumatically actuated valves can be controlled

using a floating-to-pneumatic transducer device. See Application Step 5. Order Equipment, for further information. Transducer devices are also available to convert the floating outputs to a voltage signal.

The staged reheat control algorithm can control one, two, or three stages of reheat (a third stage of reheat is only available if configured as three stage binary control on the W7751H Smart VAV Actuator). In addition to the proportional, integral, derivative (PID) control algorithm, the Excel 10 VAV Box Controller has an intelligent anticipation cycler incorporated into the staged reheat algorithm. The anticipator control works in unison with the PID temperature control algorithm and cycles the staged reheat coil providing space temperature control with the accuracy of modulating reheat. The stages are activated through Triac digital outputs, one for each stage, wired to 24 Vac contactors (see Fig. 61, 68 and 73 in Application Step 4. Prepare Wiring Diagrams). These outputs can also control 24 Vac solenoid valves on hot water coils instead of electric heat elements. Fig. 47 depicts a typical VAV box with staged reheat.

The Series 60 modulating control is provided through two Triac digital outputs, one to pulse the valve actuator open and one to pulse it closed. Damper control output Triacs operate similarly. See Fig. 62, 66, 67, and 72 in Application Step 4. Prepare Wiring Diagrams for wiring details that connect Series 60 actuators to Excel 10 VAV Controllers. Fig. 67 depicts a typical VAV box with modulating reheat.

PWM control positions the actuator based on the length, in seconds, of the pulse from the digital output. For PWM, the controller outputs a pulse whose length consists of two parts, a minimum and a maximum. The minimum pulse time represents the analog value of zero percent (also indicating a signal presence) and the maximum pulse length that represents an analog value of 100 percent. If the analog value is greater than zero percent, an additional time is added to the minimum pulse time. The length of time added is directly proportional to the magnitude of the analog value. The PWM actuator will begin to use the analog value at the end of the pulse and will continue to use this value until a new pulse is received. Refer to Appendix B under PWM Control for an example. Series 60 actuators are generally less expensive than those for PWM, but the trade-off is that PWM requires only a single controller digital output while floating control uses two digital outputs.

Fig. 71 depicts a typical VAV box using a PWM Valve Actuator. See Fig. 64, 70 and 75 for wiring an MMC325 Pneumatic Transducer to a W7751 VAV Controller.

AIR FLOW SENSOR

PRIMARY AIR

DAMPER ACTUATOR

STAGED REHEAT COIL

CONTACTORS

W7751 CONTROLLER

DISCHARGE AIR

M11867

T7770

Fig. 47. VAV box with staged reheat coils.

HOT WATER AIR FLOW SENSOR

PRIMARY AIR

DAMPER ACTUATOR

W7751 CONTROLLER

OR STEAM

REHEAT COIL

FLOATING ACTUATOR

VALVE

DISCHARGE AIR

T7770

M11868

Fig. 48. VAV box with modulating reheat coil (Series 60

floating).

CAUTION

When choosing the pneumatic pressure range, make sure that the close-off pressure is 2 to 3 psi greater than that of the spring range. When using a spring range of 5 to 10 psi with 10 psi as the

do not

Closed position, transducer;

use

use the 0 to 10 psi

the 0 to 20 psi transducer as the

recommended selection.

Pneumatic Valve Actuator Control

Pneumatic hot water or steam valve actuator control can be provided through either PWM using one Triac digital output or by Series 60 using two Triac digital outputs as is used for the Series 60 electric control. These two outputs are used to control the transducer interface that converts to a pneumatic signal.

74-2949–1 38

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

HOT WATER

VALVE

MMC325

OR STEAM REHEAT COIL

DISCHARGE AIR

PNEUMATIC ACTUATOR

PNEUMATIC TRANSDUCER

T7770

M11869

AIR FLOW SENSOR

PRIMARY AIR

DAMPER ACTUATOR

W7751 CONTROLLER

PNEUMATIC MAIN OR BRANCH LINE MUST BE 1/4 IN. (6 MM) OR LARGER TUBING. A MINIMUM OF 6 FT (1.8M) OF TUBING IS NEEDED IN A BRANCH LINE.

Fig. 49. VAV box with modulating reheat coil

(pneumatic valve actuator).

([KDXVW7UDFNLQJ2SWLRQ

The basic flow control algorithm can be run in either of two modes: the Temperature Control mode, where the flow rate is modulated to maintain the space temperature and the Exhaust Tracking Control mode (refer to Fig. 45), where the exhaust flow rate is modulated to track the supply air flow in other controllers. If exhaust tracking is selected, the air flow removed from the space is based on the sum of flow rate signals sent over the E-Bus from other controllers (plus or minus a differential). Use the Exhaust Tracking Control mode only as required by the job specifications.

2FFXSDQF\6HQVRU

W7751B, D, F Excel 10 VAV Controllers provide a digital input for connection to an Occupancy Sensor (W7751H Smart Actuator requires a Network input for this application, Refer to Note 2 below). This is a device, such as a passive infrared motion detector, that contains a dry contact (see following NOTE) closure to indicate whether or not people are present in the space. The Excel 10 VAV Controller expects a contact closure to indicate that the space is Occupied. See Fig. 60 through 63 and 66 through 69 in Application Step 4. Prepare Wiring Diagrams for details on wiring connections.

The control algorithm in the Excel 10 VAV Controller uses the Occupancy Sensor, if configured, to determine the Effective Occupancy (see Table 2) mode of operation. If the Time Of Day (TOD) schedule indicates an Occupied state, and the Occupancy Sensor contact is closed, the Effective Occupancy mode will be Occupied. However, if the TOD schedule indicates an Occupied state and the Occupancy Sensor contact is open, then the Effective Occupancy mode will be STANDBY. The flow control algorithm will then control to the STANDBY Cooling and Heating Setpoints.

If the Occupancy Sensor is not configured, a local controller can be put in the STANDBY mode only by either a one-to-one association of the occupancy sensor from another Excel 10 VAV Controller to the local controller, or by receiving the STANDBY mode signal via the E-Bus.

NOTES:

1. The Excel 10 VAV Controller has limited power available (only 9 mA at 4.8 volts) for checking the digital inputs for contact closures. It is very important that the device used contains high quality, noncorroding contacts with resistivity that does not degrade; that is, increase over time. Use noble metal (such as gold or silver), pimpled or sealed contacts to assure consistent, long term operation.

2. The W7751H has no configurable digital inputs. If the W7751H Smart Actuator requires the Window open, Occupancy, or Heat/Cool inputs, then it must be bound over the network (E-Bus) to another W7751 VAV controller that has those physical digital inputs.

The recommended devices for use with the Excel 10 VAV Controller are the EL7628A1007 Ceiling Mount Infrared or the EL7680A1008 Wall Mounted Wide View Infrared Occupancy Sensors. If ultrasonic sensors are required, the EL7611A1003 and the EL7612A1001 Occupancy Sensors are recommended. An EL76XX Power Supply/Control Unit is required for use with these occupancy sensors. The EL7630A1003, can power up to four sensors, and is multitapped for several line voltages. The EL7621A1002 can power three sensors and connects to 120 Vac line voltage. The EL7621A1010 can also power three sensors but connects to 277 Vac line voltage.

:LQGRZ2SHQ&ORVHG'LJLWDO,QSXW

W7751B, D, F Excel 10 VAV Controllers provide a digital input to detect whether a window in the space was opened (W7751H Smart Actuator requires a Network input for this application, Refer to Note 2 below). The Excel 10 VAV Controller can be connected to a dry contact (see the following NOTE and Fig. 60 through 63 and 66 through 69 in Application Step 4. Prepare Wiring Diagrams, for details) or a set of contacts wired in series (for monitoring multiple windows) to verify that the window(s) are closed. The algorithm expects a contact closure to indicate the window is closed. If an open window is detected, the algorithm changes the mode of operation to CLOSED, which commands the box damper to the position set in ZeroDmprPos (typically zero or a low value).

If the Window Sensor is not configured, a W7751B,D,F and H Controller can be put in the CLOSED mode using only two methods, either a one-to-one association of the window sensor from another Excel 10 VAV Controller to the local controller, or by receiving the CLOSED mode signal via the E-Bus.

39 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

NOTES:

1. (This is the same NOTE as in the Occupancy Sensor section.) The Excel 10 VAV Controller has limited power available (only 9 mA at 4.8 volts) for checking the digital inputs for contact closures. It is very important that the device used contains high quality, noncorroding contacts with resistivity that does not degrade; that is, increase over time. Use noble metal (such as gold or silver), pimpled or sealed contacts to assure consistent, long term operation.

+HDW&RROFKDQJHRYHU

W7751B, D, F Excel 10 VAV Controllers provide a digital input for connection to an Heat/Cool change over input (W7751H Smart Actuator requires a Network input for this application, Refer to Note 2 below). The Excel 10 VAV Controller expects a contact closure to indicate that the controller will be put into the heat mode or an open contact to be put into the cooling mode. See Figs. 30 through 34 and 36 through 40 in Application Step 4. Prepare Wiring Diagrams for details on wiring connections.

NOTES:

:DOO0RGXOH2SWLRQV

As previously discussed, there are four basic varieties of T7770 Wall Modules (see Product Names and Construction sections). Also, a T7770 can be shared among two or more W7751 Controllers. A T7780 Digital Display Wall Module (DDWM) can also be used in place of the T7770, but the T7780 DDWM requires a network node address which will decrease the number of nodes available for other Excel 10 controllers. The control algorithm must be given this wall module information when configuring the W7751 (see Application Step 6. Configure Controllers).

Common Temperature Control (Share Wall Module)

When one or more terminal units serve a common area and a single temperature sensor is specified or is desired to be used for these boxes, the Share Wall Module option can be configured (refer to Fig. 45). One Excel 10 VAV Controller will be configured with a wall module and have the desired options. The other Excel 10 VAV Controller(s) will be configured without wall modules. Refer to the CARE User's Manual, form 74-5587. In order to link these units together, link Share Wall Module through one-to-one options in the Network Manager. Use E-Vision Refer Excel 10 Points option to bind the Wall Module information between the Source (SrcMaster) and Destination (DestSatellite) controllers. In this particular case, the Master temperature control algorithm will control both the Master and Satellite controller outputs.

The preferred method is to use the Share Wall Module (Shared_Cntrl).

However, an alternative method is to bind the SrcRmTemp of the controller (Master) that has the wall module connected to it, to the DestRmTemp in each of the destination controllers (Satellites) that do not have wall modules. Each controller would use its own temperature control algorithm and internal setpoints. This method could be used when there are many VAV boxes serving the same zone that have different configurations which do not allow using the Share Wall Module option.

NOTE: Be aware of a potential problem the (SrcRmTemp

The following Module option.

and DestRmTemp) method could allow, since each VAV box is executing its own temperature control algorithm (there could be some conflicting control. For example: One box could be cooling at Max flow and another box could be at Min flow or even in the reheat mode.

IMPORTANT

items apply to the Share Wall

IMPORTANT

The type of reheat option must be the same in each unit; for example, all units must be either staged electric heat or steam/hot water heat. If the staged heat option is present, the master unit (with temperature sensor) must have the same or greater number of stages as any satellite unit. Some or all of the satellite units can be configured without any heat option. If the Share Wall Module option is used, the satellite units will not use any Internal Temperature Setpoints. The master controller Setpoints, as well as Occupancy and Command mode status, will be used in each satellite unit. Each satellite unit will have and use its own MAX, MIN, and Reheat Flow Setpoints. Share Wall Module option can also be used when none of the terminal units have any heating coils. If any units have terminal fans, the type, either serial or parallel, must be the same and the master unit must be configured with a fan.

74-2949–1 40

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

6HQVRU2SWLRQV

The C7770A, C7031C1031 or C7031C1033 Air Temperature Sensors are direct-wired temperature sensors that are used to sense discharge or return air in a duct controlled by a W7751 Controller.

NOTE: The C7770A, C7031C1031 or C7031C1033 Air

Temperature Sensors cannot be used with the T7770B,C Wall Modules when controlling any W7751H Controller.

3QHXPDWLF5HWURILW$SSOLFDWLRQV

For projects with existing pneumatically-actuated reheat valves, the Excel 10 VAV Controller output must be converted to a pneumatic signal using a transducer device developed for use with Excel 10 VAV Controllers. The transducer is available through Honeywell or directly from the manufacturer, Mamac Systems (see Table 9 for ordering information). Be sure to observe the following CAUTION.

CAUTION

Pneumatic transducers should not be used to control VAV box dampers; Instead use ML6161B1000 Motors. Pneumatic transducers are intended to control only pneumatic reheat valves.

When planning the system layout, consider potential expansion possibilities to allow for future growth. Planning is very important when preparing to add HVAC systems and controllers in future projects.

T7770 Wall Modules can be installed as either hardwired I/O-only devices or additional wiring can be run to them (for the E-Bus network ) allowing a CARE/E-Vision operator terminal to have access to the E-Bus. The application engineer needs to determine how many wall modules are required of each kind; that is, how many T7770s and T7780s are in the system. (All T7780s are connected to the E-Bus and occupy a node address and all have a connected network access jack.) How many T7770s with E-Bus network connections and how many T7770s without E-Bus network connections are being installed on the job. Clearly document which T7770 wall modules (if any) have network access and locations of any T7780s. This information is required during installation to ensure that the proper number and type of wires are pulled to the wall modules, and the building operators are informed about where they can plug in to the E-Bus network with a portable operator terminal (see Fig. 50 and

51). Refer to Step 4. Prepare Wiring Diagrams for details, about the about the wiring differences between the two types.

EXCEL 10 W7751 VAV CONTROLLER

APPLICATION STEPS

Overview

The seven application steps shown in Table 6 are planning considerations for engineering an Excel 10 W7751 System. These steps are guidelines intended to aid understanding of the product I/O options, bus arrangement choices, configuration options and the Excel 10 W7751 Controller role in the overall EXCEL 5000 OPEN System architecture.

Table 6. Application Steps.

Step No. Description

1 Plan The System 2 Determine Other Bus Devices Required 3 Lay Out Communication and Power Wiring 4 Prepare Wiring Diagrams 5 Order Equipment 6 Configure Controllers 7 Troubleshooting

Step 1. Plan The System

Plan the use of the W7751 Controllers according to the job requirements. Determine the location, functionality and sensor or actuator usage. Verify the sales estimate of the number of W7751 Controllers and T7770 and T7780 Wall Modules required for each model type. Also check the number and type of output actuators and other required accessories.

NOTEBOOK PC

SHIELDED INTERFACE

RS-232 SERIAL PORT

CABLE

Q7752A SLTA

CABLE PART NO. 205979

E-BUS PORT

M11870

Fig. 50. Connecting the portable operator terminal to

the E-Bus.

Refer to the E-Bus Wiring Guidelines, form 74-2865 for complete description of network topology rules. See Application Step 3. Lay Out Communications and Power Wiring, for more information on bus wiring layout, and see Figs. 60 through 74 in Application Step 4. Prepare Wiring Diagrams, for wiring details.

The application engineer must review the Direct Digital Control (DDC) job requirements. This includes the Sequences of Operation for the W7751 VAV units, and for the system as a whole. Usually there are variables that must be passed between the W7751 VAV Controllers and other zone controller(s), or central plant controller(s) that are required for optimum system-wide operation. Typical examples are the TOD Occ/Unocc signal, the outdoor air temperature, demand limit control signal, and smoke control mode signal.

41 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

It is important to understand these interrelationships early in the job engineering process to ensure implementation when configuring the controllers. (See Application Step 6. Configure Controllers, for information on the various Excel 10 VAV Controller parameters and on Excel 10 VAV Controller point mapping.)

Step 2. Determine Other Bus Devices Required

A maximum of 63 nodes can communicate on a single EBus segment. Each W7751 VAV Controller or T7780 Wall Module constitutes one node. If more nodes are required, a Q7751A Router is necessary. Using a router allows up to 127 nodes, divided between two E-Bus segments. The router accounts for two of these nodes (one node on each side of the router); a Q7750A Excel 10 Zone Manager takes one node and four nodes are available for operator terminal nodes, leaving 120 nodes available for Excel 10 Controllers and T7780 Wall Modules. All 120 controllers and T7780 Wall Modules are able to talk to each other through the router. A Q7750A Excel 10 Zone Manager is required to connect the E-Bus to the standard EXCEL 5000® System C-Bus. Each Excel 10 Zone Manager can support no more than 120 Excel 10 Controllers and T7780 Wall Modules. This limit is set in the Excel 10 Zone Manager database as an absolute maximum.

Each E-Bus segment is set up with two unused nodes to allow for a CARE/E-Vision operator terminal to be connected to the E-Bus. Multiple CARE/E-Vision terminals can be connected to the bus at the same time. Table 7 summarizes the E-Bus segment configuration rules.

Refer to the E-Bus Wiring Guidelines, form 74-2865 for complete description of network topology rules and the maximum wire length limitations. If longer runs are required, a Q7740A 2-way or Q7740B 4-way repeater can be added to extend the length of the E-Bus. A Q7751A Router can be added to partition the system into two segments and effectively double the length of the E-Bus. Only one router is allowed with each Excel 10 Zone

Manager, and each network segment can have a maximum of 1 repeater.

In addition, a 209541B Termination Module may be required. Refer to the E-Bus Wiring Guidelines, form 74-2865, and the Excel 10 FTT Termination Module Installation Instructions form, 95-7554. See Application Step 3. Lay Out Communications and Power Wiring, and the E-Bus Termination Module subsection in Application Step 4.

Step 3. Lay Out Communications and Power Wiring

E-Bus Layout

The communications bus, E-Bus, is a 78-kilobit serial link that uses transformer isolation and differential Manchester encoding. Approved cable types for E-Bus communications wiring is Level IV 22 AWG (0.34 mm plenum or non-plenum rated unshielded, twisted pair, solid conductor wire. For nonplenum areas, U.S. part AK3781 (one pair) or U.S. part AK3782 (two pair) can be used. In plenum areas, U.S. part AK3791 (one pair) or U.S. part AK3792 (two pair) can be used.(see Tables 9 and 10 for part numbers). Additionally, Echelon approved cable can be used. Contact Echelon Corp. Technical Support for the recommended vendors of Echelon approved cables. The FTT (Free Topology Transceiver) communications bus, E-Bus, supports a polarity insensitive, free topology wiring scheme, refer to E-Bus Wiring Guidelines form, 74-2865 for a complete description of E-Bus network topology rules and Table 7. Fig. 51, 52 and 53 depict three typical E-Bus network topologies; one as a singly terminated bus segment that has 60 nodes or less, one showing two segments and one doubly terminated E-Bus network topology that has two segments. The bus configuration is set up using E-Vision (see the Excel E-Vision User’s Guide form, 74-2588).

)

Table 7. E-Bus Configuration Rules And Device Node Numbers.

One E-Bus Segment Example Maximum Number of Nodes Equals 62

One Q7750A Excel 10 Zone Manager 1 node

Port for operator terminal access (CARE/E-Vision or Hand Held Tool) 2 nodes

Maximum number of Excel 10s and T7780s 60 nodes (Only T7780 Wall Modules are E-Bus

Two E-Bus Segments Example Maximum Number of Nodes Equals 125

One Q7750A Excel 10 Zone Manager 1 node

One Q7751A Router 2 nodes (1 in each Bus Segment)

Ports for operator terminal access (two CARE/E-Vision terminals or

Hand Held Tools)

Maximum number of Excel 10s and T7780s in segment number one 60 nodes (Only T7780 Wall Modules are E-Bus

Maximum number of Excel 10s and T7780s in segment number two 60 nodes (Only T7780 Wall Modules are E-Bus

74-2949–1 42

nodes)

Total 63 nodes

4 nodes (2 in each Bus Segment)

nodes)

Total 127 nodes

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

NOTE: For wiring details see the E-Bus Termination Module subsection in Step 4. For wall module wiring, U.S. part AK3782

(non-plenum) or U.S. part AK3792 (plenum) can be used. These cables contain two twisted pairs (one for the run down to the wall module, and one for the run back up to the controller) for ease of installation.

C7770A AIR TEMPERATURE SENSOR

EXCEL 10 VAV

T7770 WITH NO E-BUS ACCESS

EXCEL 10 VAV

T7770 WITH NO E-BUS ACCESS

T7770

EXCEL 10 VAV

123

EXCEL 10 Q7750A FTT ZONE MANAGER

EXCEL 10 VAV

E-BUS

REFER TO THE E-BUS WIRING GUIDELINES FORM, 74-8265 FOR PLACEMENT OF THE TERMINATION MODULE

209541B FTT TERMINATION MODULE

E-BUS

T7770

EXCEL 10 VAV

T7780 SHARED

UP TO 60 TOTAL NODES

E-BUS

TO C-BUS (SEE FIG. 1)

E-BUS I/O CONNECTIONS

EXCEL 10 VAV

T7770 T7770 T7770

EXCEL 10 VAV

Fig. 51. Singly terminated E-Bus wiring layout for one E-Bus segment.

EXCEL 10 VAV

T7770

JACK FOR OPERATOR TERMINAL

M11871

43 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

E-BUS SEGMENT NUMBER 1

EXCEL 10 VAV

T7770

E-BUS SEGMENT NUMBER 2

EXCEL 10 Q7750A FTT ZONE MANAGER

EXCEL 10 VAV

E-BUS ACCESS

TO C-BUS (SEE FIG. 1)

EXCEL 10 VAV

E-BUS SEGMENT NUMBER 2

EXCEL 10 VAV

Q7740A E-BUS FTT REPEATER

EXCEL 10 VAV

END-OF-LINE TERMINATION MODULE LOCATED ON REPEATER

EXCEL 10 VAV

Q7751A E-BUS FTT ROUTER

Q7740A E-BUS FTT REPEATER

END-OF-LINE TERMINATION MODULE LOCATED ON REPEATER

EXCEL 10 VAV

M11872

T7770

E-BUS ACCESS

EXCEL 10 VAV

Fig. 52. Singly terminated bus with repeaters and router (total E-Bus length less than 500 meters). E-Bus wiring layout

for two E-Bus segments.

74-2949–1 44

E-BUS SEGMENT NUMBER 1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

EXCEL 10 VAV

E-BUS SEGMENT NUMBER 2

EXCEL 10 Q7750A FTT ZONE MANAGER

EXCEL 10 VAV

209541B FTT TERMINATION MODULE

T7770

E-BUS ACCESS

TO C-BUS (SEE FIG. 1)

EXCEL 10 VAV

T7770

209541B FTT TERMINATION MODULE

EXCEL 10 VAV

E-BUS SEGMENT NUMBER 2

EXCEL 10 VAV

Q7751A E-BUS FTT ROUTER

209541B FTT TERMINATION MODULE

EXCEL 10 VAV

Fig. 53. E-Bus wiring layout for two doubly terminated E-Bus segments.

NOTE: See the E-Bus Termination Module section for

wiring details.

IMPORTANT

Notes on communications wiring:

• All field wiring must conform to local codes and ordinances.

• Approved cable types for E-Bus communications wiring is Level IV 22 AWG (0.34 mm

) plenum or non-plenum rated unshielded, twisted pair, solid conductor wires. For nonplenum areas, U.S. part AK3781 (one pair) or U.S. part AK3782 (two pair) can be used. In plenum areas, U.S. part AK3791 (one pair) or U.S. part AK3792 (two pair) can be used (see Tables 9 and 10 for part numbers). Additionally, Echelon approved cable can be used. Contact Echelon Corp. Technical Support for the recommended vendors of Echelon approved cables.

• Unswitched 24 Vac power wiring can be run in the same conduit as the E-Bus cable.

• Do not use different wire types or gauges on the same E-Bus segment. The step change in line impedance characteristics causes unpredictable reflections on the bus. When using different types is unavoidable, use a Q7751A Router at the junction.

E-BUS ACCESS

• In noisy (high EMI) environments, avoid wire runs parallel to noisy power cables, or lines containing lighting dimmer switches, and keep at least 3 in. (76 mm) of separation between noisy lines and the E-Bus cable.

• Make sure that neither of the E-Bus wires is grounded.

Power Wiring

A power budget must be calculated for each Excel 10 W7751 Controller to determine the required transformer size for proper operation. A power budget is simply the summing of the maximum power draw ratings (in VA) of all the devices to be controlled by an Excel 10 W7751 Controller. This includes the controller itself, the equipment actuators (ML6161, or other motors) and various contactors and transducers, as appropriate, for the Excel 10 configuration.

M11873

45 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Power Budget Calculation Example

The following is an example power budget calculation for a typical W7751 Excel 10 VAV Controller. Assume a VAV box with a series fan, and modulating reheat valve. The power requirements are:

Device VA Information Obtained

from the

Excel 10 W7751 VAV Controller 6.0 VA W7751

Specification Data

ML6161 2.2 VA TRADELINE® Damper Actuator Catalog

R8242A 21.0 VA TRADELINE® Contactor for fan Catalog in-rush rating

D/X Stages 0.0 VA (NOTE: For this

example, assume the cooling stage outputs are wired into a compressor control circuit and, therefore, have no impact on the power budget.)

M6410A Steam 0.7 VA TRADELINE® Heating Coil Valve Catalog, 0.32A at 24 Vac

TOTAL: 29.9 VA

The Excel 10 VAV System example requires 29.9 VA of peak power; therefore, a 40 VA AT72D Transformer is able to provide ample power for this controller and its accessories. Alternatively, a 75 VA AT88A Transformer could be used to power two Excel 10 Systems of this type, or a 100 VA AT92A Transformer could be used to power three of these controllers and meet NEC Class 2 restrictions (no greater than 100 VA U.S. only). See Fig. 55 and 56 for illustrations of power wiring details. See Table 8 for VA ratings of various devices.

Table 8. VA Ratings For Transformer Sizing.

Device Description VA

W7751B,D,F Excel 10 W7751 Controller 6.0 W7751H Excel 10 Smart VAV Actuator 6.0 T7780A Excel 10 W all Module 0.3 ML6161A/B Damper Actuator, 35 lb-in. 2.2 R8242A Contactor 21.0 M6410A Valve Actuator 0.7 MMC325 Pneumatic Transducer 5.0 ML684 Versadrive Valve Actuator 12.0 ML6464 Damper Actuator, 66 lb-in. 3.0 ML6474 Damper Actuator, 132 lb-in. 3.0 ML6185 Damper Actuator SR 50 lb-in. 12.0

For contactors and similar devices, the in-rush power ratings should be used as the worst case values when performing power budget calculations. Also, the application engineer must consider the possible combinations of simultaneously energized outputs and calculate the VA ratings accordingly. The worst case, that uses the largest possible VA load, should be determined when sizing the transformer.

Line Loss

Excel 10 Controllers must receive a minimum supply voltage of 20 Vac. If long power or output wire runs are required, a voltage drop due to Ohms Law (I x R) line loss must be considered. This line loss can result in a significant increase in total power required and thereby affect transformer sizing. The following example is an I x R line-loss calculation for a 200 ft (61m) run from the transformer to a W7751 Controller drawing 37 VA using 18 AWG (1.0 mm

) wire.

The formula is: Loss = [length of round-trip wire run (ft)] x [resistance in wire (ohms per ft)] x [current in wire (amperes)]

From specification data: 18 AWG twisted pair wire has 6.52 ohms per 1000 feet. Loss = [(200 ft) x (2 - round-trip) x (6.52/1000 ohms per ft)] x [(37 VA)/(24V)] = 4.02 volts

This means that four volts are going to be lost between the transformer and the controller; therefore, to assure the controller receives at least 20 volts, the transformer must output more than 24 volts. Because all transformer output voltage levels depend on the size of the connected load, a larger transformer outputs a higher voltage than a smaller one for a given load. Fig. 54 shows this voltage load dependence.

In the preceding I x R loss example, even though the controller load is only 37 VA, a standard 40 VA transformer is not sufficient due to the line loss. From Fig. 54, a 40 VA transformer is just under 100 percent loaded (for the 37 VA controller) and, therefore, has a secondary voltage of 22.9 volts. (Use the lower edge of the shaded zone in Fig. 54 that represents the worst case conditions.) When the I x R loss of four volts is subtracted, only 18.9 volts reaches the controller, which is not enough voltage for proper operation.

In this situation, the engineer basically has three alternatives:

1. Use a larger transformer; for example, if an 80 VA model is used, see Fig. 54, an output of 24.4 volts minus the four volt line loss supplies 20.4V to the controller. Although acceptable, the four-volt lineloss in this example is higher than recommended. See the following

2. Use heavier gauge wire for the power run. 14 AWG (2.0 mm

) wire has a resistance of 2.57 ohms per

IMPORTANT

1000 ft which, using the preceding formula, gives a line-loss of only 1.58 volts (compared with 4.02 volts). This would allow a 40 VA transformer to be used. 14 AWG (2.0 mm

) wire is the recommended

wire size for 24 Vac wiring.

3. Locate the transformer closer to the controller, thereby reducing the length of the wire run, and the line loss.

74-2949–1 46

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

The issue of line-loss is also important in the case of the output wiring connected to the Triac digital outputs. The same formula and method are used. The rule to remember is to keep all power and output wire runs as short as practical. When necessary, use heavier gauge wire, a bigger transformer, or install the transformer closer to the controller.

IMPORTANT

No installation should be designed where the line loss is greater than two volts to allow for nominal operation if the primary voltage drops to 102 Vac (120 Vac minus 15 percent).

To meet the National Electrical Manufacturers Association (NEMA) standards, a transformer must stay within the NEMA limits. The chart in Fig. 54 shows the required limits at various loads.

With 100 percent load, the transformer secondary must supply between 23 and 25 volts to meet the NEMA standard. When a purchased transformer meets the NEMA standard DC20-1986, the transformer voltage-regulating ability can be considered reliable. Compliance with the NEMA standard is voluntary.

The following Honeywell transformers meet this NEMA standard:

Transformer Type VA Rating

AT20A 20 AT40A 40 AT72D 40 AT87A 50

AK3310 Assembly 100

27 26 25 24 23

21 20 19 18

SECONDARY VOLTAGE

17 16 15 14

0 50 100 150

% OF LOAD

200

M993

Fig. 54. NEMA class 2 transformer voltage output

limits.

Attach good earth ground to all W7751 Controllers. Refer to Fig. 55, 56 and 57, 58 through 64 for terminal locations.

IMPORTANT

If the W7751 Controller is used on

Cooling Equipment (UL 1995 US only)

Heating and

devices and the transformer primary power is more than 150 volts, connect the transformer secondary to earth ground, see Fig. 57.

For the W7751B, attach earth ground to terminal 10 or 12. For the W7751D,F, attach earth ground to terminal 2 or 4. For the W7751H, attach earth ground to terminal 2. See Fig. 56.

47 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

CONNECT TO 9 AND 10 OR 11 AND 12

LINE

TRANSFORMER

EARTH GROUND

CONNECT POWER TO EITHER 1 AND 2 OR 3 AND 4

LINE

TRANSFORMER

24 VAC

M11852

24 VAC

W7751D,F

1234 810

TRIAC LINES TO ACTUATORS

LOAD POWER

AND CONTACTORS

CONNECT POWER TO EITHER 1 AND 2

LINE

TRANSFORMER

LOAD POWER

12 10

W7751B

24 VAC

TRIAC LINES TO ACTUATORS AND CONTACTORS

EARTH GROUND

W7751H

3109

LOAD POWER

EARTH GROUND

TRIAC LINES TO ACTUATORS AND CONTACTORS

EARTH GROUND

TRANSFORMER

Fig. 55. Power wiring details for one Excel 10 per transformer.

W7751H

W7751D,F

24 VAC120/240 VAC

24V

COM

1234

EARTH GROUND

24V

COM

EARTH GROUND

123

1 IF THE W7751 CONTROLLER IS USED IN UL 1995 EQUIPMENT AND THE PRIMARY POWER IS MORE THAN 150 VOLTS, GROUND ONE SIDE OF TRANSFORMER SECONDARY.

EARTH GROUND

Fig. 56. Power wiring details for two or more Excel 10s per transformer.

W7751B

10 11 12

M11853

IMPORTANT

If the W7751 Controller is used on

Cooling Equipment (UL 1995 US only)

Heating and

devices and the transformer primary power is more than 150 volts, connect the transformer secondary to earth ground, see Fig. 57.

74-2949–1 48

For the W7751B, attach earth ground to terminal 10 or 12. For the W7751D,F, attach earth ground to terminal 2 or 4. For the W7751H, attach earth ground to terminal 2. See Fig. 56.

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

EARTH

TRANSFORMER

24 VAC

LINE VOLTAGE GREATER THAN 150 VAC

IF THE W7751 CONTROLLER IS USED IN UL 1995 EQUIPMENT AND THE

PRIMARY POWER IS MORE THAN 150 VOLTS, GROUND ONE SIDE OF TRANSFORMER SECONDARY.

EARTH GROUND

GROUND

W7751D,F

24V

COM

24V

1234

COM

M11854

Fig. 57. Transformer power wiring details for one Excel

10 used in UL 1995 equipment (US only).

IMPORTANT

Notes on power wiring:

All field wiring must conform to local codes and

•

ordinances.

To maintain NEC Class 2 and UL ratings, the

•

installation must use transformers of 100 VA or less capacity (U.S. only).

For multiple controllers operating from a single

•

transformer, the same side of the transformer secondary must be connected to the same input terminal in each controller and the ground terminals (28 on the W7751B, 32 on the W7751D,F and 3 on the W7751H) must be connected to a verified earth ground for each controller in the group. See Fig. 56. (Controller configurations are not necessarily limited to three devices.)

• All output devices must be powered from the same transformer as the one powering the Excel 10 W7751 VAV Controller.

Use the heaviest gauge wire available, up to

•

14 AWG (2.0 mm (1.0 mm

) for all power and earth ground

) with a minimum of 18 AWG

connections.

To minimize EMI noise, do not run Triac output

•

wires in the same conduit as the input wires or the E-Bus communications loop.

Unswitched 24 Vac power wiring can be run in

•

the same conduit as the E-Bus cable.

Make earth ground connections with the

•

shortest possible wire run using 14 AWG (2.0

) wire. A good earth ground is essential

mm for W7751 operation. Ideally, connect the earth ground to the ground bus at a motor control center or circuit breaker panel. However, if the nearest ideal earth ground is inaccessible, consider an alternate source for earth ground. Metal water pipe is generally a good ground, but do not use sprinkler pipe if prohibited by local codes. Attention must be given when duct work, conduit, or rebar are to be considered as ground sources. It is the responsibility of the installer to assure that these structures are tied back to a known earth ground.

Step 4. Prepare Wiring Diagrams

General Considerations

The purpose of this step is to assist the application engineer in developing job drawings to meet job specifications. Wiring details are included for the W7751B,D,F,H and the T7770 and T7780. The drawings detail I/O, power, and communication bus wiring connections.

NOTE: For field wiring, when two or more wires are to be

The connector block terminals on the W7751 and on the T7770 and T7780 accept 14 through 22 AWG (2.0 to

0.325 mm length restrictions for Excel 10 products.

W7751B OEM Version

Fig. 60 through 65 illustrate W7751B Controller wiring for various VAV box configurations. The W7751B OEM version is implemented on a snaptrack-compatible printed wiring board (PWB). Connections to the wall module terminals (19 through 23) and the communications terminals (29 through 32) are made at terminal blocks. Connection for access to the E-Bus is provided by plugging the connector into the communications jack. All other connections are made with 1/4 in. (6.35 mm) quick connects.

NOTE: If an Excel 10 VAV Controller or Zone Manager is

attached to the same connector block terminal, be sure to twist them together. Deviation from this rule can result in improper electrical contact. See Fig. 58.

) wire. Table 9 lists wiring types, sizes, and

not connected to a good earth ground, the controllers internal transient protection circuitry is compromised and the function of protecting the controller from noise and power line spikes cannot be fulfilled. This can result in controller lockups that can be fixed by performing a powerdown/power-up sequence. This can also result in a damaged circuit board and require replacement of the controller.

49 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Table 9. Field Wiring Reference Table.

Wire

Function

E-Bus (Plenum)

E-Bus (NonPlenum)

Input Wiring Sensors Contacts

Output Wiring Actuators Relays

Power Wiring

Recommended

Minimum Wire

Size AWG (mm

22 AWG (0.325 mm

)

18 to 22 AWG (1.0 to 0.325

)

14 AWG (2.0

)

mm (18 AWG (1.0

) acceptable

mm for short runs)

14 AWG (2.0 mm

)

) Construction

Twisted pair solid conductor, nonshielded or Echelon approved shielded cable.

Twisted pair solid conductor, nonshielded or Echelon approved cable.

Multiconductor (usually fivewire cable bundle). For runs >200 ft (61m) in noisy EMI areas, use shielded cable.

Any pair nonshielded (use heavier wire for longer runs).

Specification

Requirement Vendor Wire Type

Level IV 140°F (60°C) rating

Honeywell AK3791 (one twisted pair) AK3792 (two twisted pairs)

Level IV 140°F (60°C) rating

Honeywell AK3781 (one twisted pair) AK3782 (two twisted pairs)

140°F (60°C)

Standard thermostat wire 1000 ft (305m)

rating

NEC Class 2 140°F (60°C) rating

Honeywell AK3702 (18 AWG) AK3712 (16 AWG) AK3754 (14 AWG) or equivalent

NEC Class 2 140°F (60°C) rating

Honeywell AK3754 (14 AWG) twisted pair AK3909 (14 AWG) single conductor or equivalent

Maximum Length

ft (m)

Refer to E-Bus Wiring Guidelines form, 74-2865 for maximum length

for 18 AWG 200 ft (61m) for 22 AWG

Limited by line-loss effects on power consumption. (See Line Loss subsection.)

1/2

(13)

STRIP 1/2 IN. (13 MM)

1. 2. TWIST WIRES FROM WIRES TO BE ATTACHED AT ONE TERMINAL.

TOGETHER WITH PLIERS (A MINIMUM OF THREE TURNS).

Fig. 58. Attaching two or more wires at terminal blocks.

The W7751B VAV Controller must have two complete loops of the wires coming from the T7770 Wall Modules that pass through the split ferrite cores (Fair-Rite



044316451 or equivalent Honeywell part 229997CB). The W7751B VAV Controller and the split ferrite cores must also be in a metal enclosure to ensure compliance with CE requirements. See Fig. 59.

TWO 14 AWG

) WIRES

(2.0 MM

W7751D,F ,H

3. CUT TWISTED END OF WIRES TO 3/16 IN. (5 MM) BEFORE INSERTING INTO TERMINAL AND TIGHTENING SCREW. THEN PULL ON EACH WIRE IN ALL TERMINALS TO CHECK FOR GOOD MECHANICAL CONNECTION.

W7751B

M11855

74-2949–1 50

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

WIRES TO T7770 WALL MODULE

WIRES TO W7751B CONTROLLER

WIRES TO T7770 WALL MODULE

WIRES TO W7751B CONTROLLER

M12609

Fig. 59. Ferrite core for T7770 Wall Module wires going

to a W7751B VAV Controller.

7 6985432

LED

T7770C WALL MODULE

29 30

E-BUS

TRIAC OUTPUTS

JACK FOR E-BUS NETWORK ACCESS

CW COM CCW ML6161 DAMPER

ACTUATOR

GND

E-BUS

SET PT

BYPASS

GROUND

NETWORK

COMMUNIC ATIONS

12345678

DAMPER OPEN

E-BUS

SENSOR

E-BUS

NETWORK

ACCESS

EARTH

28 25 24 23

EGND

W7751B VAV CONTROLLER BOARD

TRIAC EQUIVALENT CIRCUIT

DO 2

DO 4

DO 1

DO 3

DO 5

DAMPER CLOSE

REHEAT STAGE 3

SERIES OR PARALLEL FAN

REHEAT STAGE 1 (OR OPEN)

REHEAT STAGE 2 (OR CLOSE)

REHEAT STAGE CONTACTORS

JACK

FOR

AI 1

AI 2

AGND

WALL MODULE

DO 6

DO 8

DO 7

24 VAC TO OTHER CONTROLLERS

SERIES OR PARALLEL FAN CONTACTORS

∆P PICKUP

1920

LED

BYPASS

SENSOR

COM

+24 VAC

–24 VAC

13 14 15 16

24 VAC

OCCUPANCY SENSOR (CONTACT CLOSED = OCCUPIED)

LOAD POWER

AIR FLOW

MICROBRIDGE

∆P SENSOR

DGND

DI 1

DGND

DI 2

WINDOW CONTACT (CONTACT CLOSED = WINDOW CLOSED)

DI 3

EARTH GROUND WIRE LENGTH SHOULD BE HELD TO A MINIMUM. USE THE HEAVIEST GAUGE WIRE AVAILABLE, UP TO 14 AWG (2.O MM2) WITH A MINIMUM OF 18 AWG (1.O MM2), FOR EARTH GROUND WIRE.

TO ASSURE PROPER ELECTRICAL CONTACT, WIRES MUST BE TWISTED

TOGETHER BEFORE INSERTION INTO THE TERMINAL BLOCK.

LOAD POWER WIRE CAN BE CONNECTED TO TERMINAL 9. CONTACTS MUST BE SUITABLE FOR DRY SWITCHING, 5V AT 10 mA. USE

SEALED TYPE, GOLD FLASHED OR PIMPLED CONTACTS.

M12610

Fig. 60. Typical W7751B application wiring diagram.

(For notes 2 and 3, refer to Fig. 58.)

51 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

C7770A

AIR FLOW

∆P PICKUP

1920

MICROBRIDGE

∆P SENSOR

LED

COM

DGND

13 14 15 16 17

24 VAC

AIR TEMPERATURE SENSOR

DGND

DI 2

DI 1

WINDOW CONTACT (CONTACT CLOSED = WINDOW CLOSED)

M12611

7 6985432

LED

BYPASS

T7770C WALL MODULE

29 30

E-BUS

NETWORK

COMMUNIC ATIONS

TRIAC OUTPUTS

JACK FOR E-BUS NETWORK ACCESS

CW COM CCW ML6161 DAMPER

ACTUATOR

EARTH GROUND WIRE LENGTH SHOULD BE HELD TO A MINIMUM. USE THE HEAVIEST GAUGE WIRE AVAILABLE, UP TO 14 AWG (2.O MM2) WITH A MINIMUM OF 18 AWG (1.O MM2), FOR EARTH GROUND WIRE.

TO ASSURE PROPER ELECTRICAL CONTACT, WIRES MUST BE TWISTED TOGETHER BEFORE INSERTION INTO THE TERMINAL BLOCK.

LOAD POWER WIRE CAN BE CONNECTED TO TERMINAL 9. CONTACTS MUST BE SUITABLE FOR DRY SWITCHING, 5V AT 10 mA. USE

SEALED TYPE, GOLD FLASHED OR PIMPLED CONTACTS.

GND

E-BUS

SET PT

SENSOR

JACK

FOR

E-BUS

NETWORK

ACCESS

EARTH

GROUND

TRIAC EQUIVALENT CIRCUIT

DO 1

12345678

DAMPER OPEN

28 25 24 23

AI 2

AGND

EGND

W7751B VAV CONTROLLER BOARD

DO 2

DO 4

DO 3

DAMPER CLOSE

REHEAT STAGE 1 (OR OPEN)

REHEAT STAGE CONTACTORS

DO 6

DO 5

DO 7

24 VAC TO OTHER CONTROLLERS

REHEAT STAGE 3

SERIES OR PARALLEL FAN

REHEAT STAGE 2 (OR CLOSE)

SERIES OR PARALLEL FAN CONTACTOR

AI 1

AGND

BYPASS

SENSOR

WALL MODULE

DO 8

+24 VAC

–24 VAC

OCCUPANCY SENSOR (CONTACT CLOSED =

LOAD POWER

OCCUPIED)

Fig. 61. Typical W7751B application wiring diagram

using the T7770C Wall Module and a C7770A Air Temperature Sensor. (For notes 2 and 3, refer to

Fig. 58.)

DI 3

7 6985432

LED

BYPASS

T7770C WALL MODULE

29 30

E-BUS

COMMUNIC ATIONS

TRIAC OUTPUTS

JACK FOR E-BUS NETWORK ACCESS

SIGNAL

STEM UP

M6410 SERIES 60 VALVE ACTUATOR

TWO OR THREE-WAY VALVE

3 4

STEM

COM

DOWN

EARTH GROUND WIRE LENGTH SHOULD BE HELD TO A MINIMUM. USE THE HEAVIEST GAUGE WIRE AVAILABLE, UP TO 14 AWG (2.O MM2) WITH A MINIMUM OF 18 AWG (1.O MM2), FOR EARTH GROUND WIRE.

TO ASSURE PROPER ELECTRICAL CONTACT, WIRES MUST BE TWISTED TOGETHER BEFORE INSERTION INTO THE TERMINAL BLOCK.

LOAD POWER WIRE CAN BE CONNECTED TO TERMINAL 9. CONTACTS MUST BE SUITABLE FOR DRY SWITCHING, 5V AT 10 mA. USE

SEALED TYPE, GOLD FLASHED OR PIMPLED CONTACTS.

GND

E-BUS

SET PT

SENSOR

JACK

FOR

E-BUS

NETWORK

ACCESS

EARTH

GROUND

NETWORK

TRIAC EQUIVALENT CIRCUIT

DO 1

12345678

OPEN

28 25 24 23

AI 2

AGND

EGND

DO 5

LINE

WALL MODULE

DO 6

DO 7

SERIES OR PARALLEL FAN

W7751B VAV CONTROLLER BOARD

DO 2

DO 4

DO 3

CLOSED SIGNAL

POWER

AI 1

DO 8

AGND

+24 VAC

SENSOR

AIR FLOW

∆P PICKUP

1920

MICROBRIDGE

LED

BYPASS

COM

DGND

–24 VAC

13 14 15 16 17

24 VAC

OCCUPANCY SENSOR (CONTACT CLOSED = OCCUPIED)

∆P SENSOR

DGND

DI 2

DI 1

WINDOW CONTACT (CONTACT CLOSED = WINDOW CLOSED)

DI 3

M12612

Fig. 62. Typical W7751B modulating reheat valve and a

series/parallel fan wiring diagram. (For notes 2 and 3,

refer to Fig. 58.)

74-2949–1 52

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

7 6985432

LED

BYPASS

T7770C WALL MODULE

29 30

E-BUS

TRIAC OUTPUTS

JACK FOR E-BUS NETWORK ACCESS

LINE POWER

EARTH GROUND WIRE LENGTH SHOULD BE HELD TO A MINIMUM. USE THE HEAVIEST GAUGE WIRE AVAILABLE, UP TO 14 AWG (2.O MM2) WITH A MINIMUM OF 18 AWG (1.O MM2), FOR EARTH GROUND WIRE.

TO ASSURE PROPER ELECTRICAL CONTACT, WIRES MUST BE TWISTED TOGETHER BEFORE INSERTION INTO THE TERMINAL BLOCK.

LOAD POWER WIRE CAN BE CONNECTED TO TERMINAL 9. CONTACTS MUST BE SUITABLE FOR DRY SWITCHING, 5V AT 10 mA. USE

SEALED TYPE, GOLD FLASHED OR PIMPLED CONTACTS.

NETWORK

COMMUNIC ATIONS

STAGE 1

GND

E-BUS

SET PT

GROUND

12345678

E-BUS

SENSOR

JACK

FOR

E-BUS

NETWORK

ACCESS

EARTH

28 25 24 23

AI 2

AGND

EGND

DO 5

DO 6

WALL MODULE

DO 7

CONTACTORS 24 VAC ONLY

STAGE 3

W7751B VAV CONTROLLER BOARD

TRIAC EQUIVALENT CIRCUIT

DO 2

DO 4

DO 1

DO 3

STAGE 2

AI 1

DO 8

AGND

SENSOR

+24 VAC

AIR FLOW

∆P PICKUP

1920

MICROBRIDGE

∆P SENSOR

LED

BYPASS

COM

DGND

–24 VAC

13 14 15 16 17

24 VAC

OCCUPANCY SENSOR (CONTACT CLOSED = OCCUPIED)

DI 1

DGND

DI 2

WINDOW CONTACT (CONTACT CLOSED = WINDOW CLOSED)

M12613

DI 3

Fig. 63. Typical W7751B staged reheat wiring diagram.

(For notes 2 and 3, refer to Fig. 58.)

See Fig. 64 to wire a pneumatic transducer to a W7751B or Fig. 65 for PWM Reheat and Peripheral Heat Valve Actuators to a W7751B controller.

W7751B VAV

TRIAC OUTPUTS

3 4

CONTROLLER BOARD

12345678

OPEN CLOSE

MMC325 PNEUMATIC TRANSDUCER

24 (H)

24 (N)

24 (H)

24 (N)

INCREASE

DECREASE

REVERSE WIRES (INCREASE/DECREASE) TO REVERSE ACTION (DIRECT/REVERSE).

MAKE SURE ALL TRANSFORMER/POWER WIRING IS AS SHOWN: REVERSING TERMINATIONS WILL RESULT IN EQUIPMENT MALFUNCTION.

OPTIONAL 24 VAC WIRING TO NEXT CONTROLLER. USE 1/4 IN (6 MM) PNEUMATIC TUBING. MINIMUM BRANCH LINE MUST BE

6 FT. (1.8M) OR LONGER.

– 24 VAC

+ 24 VAC

PNEUMATIC

COM

24 VAC

VALVE

M12614

Fig. 64. Typical W7751B pneumatic transducer wiring

diagram. (For notes 2 and 3, refer to Fig. 58.)

W7751B VAV

TRIAC OUTPUTS

ON OFF

CONFIGURATION DIP SWITCHES (LOCATED ADJACENT TO THE INPUT TERMINAL BLOCK)

MAKE SURE ALL TRANSFORMER/POWER WIRING IS AS SHOWN: REVERSING TERMINATIONS WILL RESULT IN EQUIPMENT MALFUNCTION.

TO ASSURE PROPER ELECTRICAL CONTACT, WIRES MUST BE TWISTED TOGETHER BEFORE INSERTION.

TURN POWER OFF BEFORE SETTING THE DIP SWITCHES.

CONTROLLER BOARD

12345678

1234

ML7984B

COM

– 24 VAC

+ 24 VAC

24 VAC

24 (N)

PWM

(H 24 VAC)

PWM

(H 24 VAC)

VALVE ACTUATOR

PWM OUTPUT

FROM CNTRL

PERIPHERAL HEAT

VALVE ACTUATOR

PWM OUTPUT

FROM CNTRL

PWM VALVE ACTUATOR

24 (H)

T6 T5 C B W R

PWM VALVE ACTUATOR

24 (H)

T6 T5 C B W R

REHEAT

M12615

Fig. 65. Typical W7751B PWM reheat and

PWM peripheral heat valve actuator wiring diagram.

(For notes 2 and 3, refer to Fig. 58.)

53 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

NOTE: Make sure to set the Configuration DIP Switch as

shown in Fig. 65. Switches 1 through 3 set the timing of the ML7984B valve actuator to match the W7751B outputs (0.1 sec. Min. with a max. time of 25.6 sec.). Switch 4 determines the action of the actuator (Off = Direct Acting, On = Reverse Acting).

W7751D,F Field-Mount Versions

Fig. 66 through 70 illustrate W7751D,F Controller wiring for various VAV box configurations. The W7751D,F Subbases use terminal blocks for all wiring connections.

NOTE: If an Excel 10 VAV Controller or Zone Manager is

WINDOW CONTACT (CONTACT CLOSED = WINDOW CLOSED)

OCCUPANCY SENSOR (CONTACT CLOSED = OCCUPIED)

EARTH

GROUND

31 30 29 28 27 26 25

W7751D,F

SUBBASE

EARTH

GROUND

TRIAC EQUIVALENT CIRCUIT

GROUND

DI-1(OCCUP)

DI-2

AI-2 FOR

(WINDOW)

WALL MODULE

W7751 D&F

GROUND

AI-1 SETPT

EARTH

GROUND

AIR TEMPERATURE SENSOR

AIR FLOW

∆P PICKUP

24 23

BYPASS

SENSOR

NOT

C7770A

7 6985432

LED

SET PT

BYPASS

T7770C WALL MODULE

E-BUS NETWORK

LED

MICROBRIDGE ∆P SENSOR

COMMUNICATIONS

NETWORK

GND

E-BUS

SENSOR

JACK FOR

ACCESS

LOW

E-BUS

24V

COM

123456789101112 13 14 15 16 17 18 19 20 21

CW COM CCW ML6161 DAMPER

ACTUATOR

EARTH GROUND WIRE LENGTH SHOULD BE HELD TO A MINIMUM. USE THE HEAVIEST GAUGE WIRE AVAILABLE, UP TO 14 AWG (2.O MM2) WITH A MINIMUM OF 18 AWG (1.O MM2), FOR EARTH GROUND WIRE.

TO ASSURE PROPER ELECTRICAL CONTACT, WIRES MUST BE TWISTED TOGETHER BEFORE INSERTION INTO THE TERMINAL BLOCK.

TERMINALS 1 AND 3 LOAD POWER. CONTACTS MUST BE SUITABLE FOR DRY SWITCHING, 5V AT 10 mA. USE

SEALED TYPE, GOLD FLASHED OR PIMPLED CONTACTS. 24 VAC TO OTHER CONTROLLERS.

OUT 2

OUT 1

COM

OPEN SIGNAL

DAMPER OPEN

DAMPER CLOSE

STEM UP

OUT 3

OUT 4

OUT 5

OUT 6

STEM UP

M6410 SERIES 60 VALVE ACTUATOR

PERIPHERAL

CLOSED SIGNAL

HEATER

COM

M6410 SERIES 60 VALVE ACTUATOR

REHEATER

OUT 7

COM

STEM DOWN

OUT 8

NOT

USED

STEM DOWN

NOT

USED

LINE POWER

SERIES OR PARALLEL FAN

E-BUS

DI-3

GND

SERIES OR

PARALLEL FAN

M11877

NOT

USED

E-BUS

74-2949–1 54

Fig. 66. Typical W7751D,F VAV box wiring diagram

using the T7770C Wall Module and a C7770A Air

Temperature Sensor. (For note 2, refer to Fig. 58.)

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

WINDOW CONTACT (CONTACT CLOSED = WINDOW CLOSED)

OCCUPANCY SENSOR (CONTACT CLOSED = OCCUPIED)

EARTH

GROUND

W7751D,F SUBBASE

TRIAC EQUIVALENT CIRCUIT

24V

COM

123456789101112 13 14 15 16 17 18 19 20 21

STEM UP

M6410 SERIES 60 VALVE ACTUATOR

31 30 29 28 27 26 25

EARTH

GROUND

DI-1(OCCUP)

OUT 3

OUT 2

OUT 4

OUT 1

COM

OPEN SIGNAL

CLOSED SIGNAL

STEM

COM

DOWN

DI-2

(WINDOW)

OUT 5

WALL MODULE

AI-2 FOR

W7751 D&F

AI-1 SETPT

OUT 6

OUT 7

SENSOR

GROUND

NOT

EARTH

GROUND

NOT

OUT 8

T7770C WALL MODULE

AIR FLOW

∆P PICKUP

24 23

LED

BYPASS

COMMUNICATIONS

USED

NOT

USED

7 6985432

LED

SET PT

BYPASS

E-BUS NETWORK

MICROBRIDGE ∆P SENSOR

NETWORK

DI-3

GND

E-BUS

SENSOR

JACK FOR

ACCESS

LOW

E-BUS

NOT

E-BUS

USED

E-BUS

WINDOW CONTACT (CONTACT CLOSED = WINDOW CLOSED)

OCCUPANCY SENSOR (CONTACT CLOSED = OCCUPIED)

EARTH

GROUND

W7751D,F SUBBASE

TRIAC EQUIVALENT CIRCUIT

24V

COM

123456789101112 13 14 15 16 17 18 19 20 21

24 VAC

NOTE: LOAD POWER CAN BE CONNECTED TO EITHER TERMINAL 1 OR 3.

31 30 29 28 27 26 25

EARTH

GROUND

DI-1(OCCUP)

OUT 3

OUT 2

OUT 4

OUT 1

COM

LINE POWER

DI-2

AI-2 FOR

(WINDOW)

OUT 5

WALL MODULE

W7751 D&F

GROUND

AI-1 SETPT

GROUND

OUT 6

OUT 7

OUT 8

SENSOR

NOT

EARTH

NOT

T7770C WALL MODULE

AIR FLOW

∆P PICKUP

24 23

LED

BYPASS

COMMUNICATIONS

USED

NOT

USED

7 6985432

LED

SET PT

BYPASS

E-BUS NETWORK

MICROBRIDGE ∆P SENSOR

NETWORK

DI-3

GND

24 VAC ONLY

GND

E-BUS

SENSOR

JACK FOR

ACCESS

LOW

E-BUS

NOT

E-BUS

USED

E-BUS

REHEATER

EARTH GROUND WIRE LENGTH SHOULD BE HELD TO A MINIMUM. USE THE HEAVIEST GAUGE WIRE AVAILABLE, UP TO 14 AWG (2.O MM2) WITH A MINIMUM OF 18 AWG (1.O MM2), FOR EARTH GROUND WIRE.

TO ASSURE PROPER ELECTRICAL CONTACT, WIRES MUST BE TWISTED TOGETHER BEFORE INSERTION INTO THE TERMINAL BLOCK.

TERMINALS 1 AND 3 LOAD POWER. CONTACTS MUST BE SUITABLE FOR DRY SWITCHING, 5V AT 10 mA. USE

SEALED TYPE, GOLD FLASHED OR PIMPLED CONTACTS. 24 VAC TO OTHER CONTROLLERS.

Fig. 67. W7751D,F modulating reheat valve wiring

diagram. (For note 2, refer to Fig. 58.)

M12617

STAGE 1

EARTH GROUND WIRE LENGTH SHOULD BE HELD TO A MINIMUM.

USE THE HEAVIEST GAUGE WIRE AVAILABLE, UP TO 14 AWG (2.O MM2) WITH A MINIMUM OF 18 AWG (1.O MM2), FOR EARTH GROUND WIRE.

TO ASSURE PROPER ELECTRICAL CONTACT, WIRES MUST BE TWISTED

TOGETHER BEFORE INSERTION INTO THE TERMINAL BLOCK. TERMINALS 1 AND 3 LOAD POWER.

CONTACTS MUST BE SUITABLE FOR DRY SWITCHING, 5V AT 10 mA. USE

SEALED TYPE, GOLD FLASHED OR PIMPLED CONTACTS. 24 VAC TO OTHER CONTROLLERS.

STAGE 2

STAGE 3

Fig. 68. Typical W7751D,F staged reheat wiring

diagram. (For note 2, refer to Fig. 58.)

M12618

55 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

WINDOW CONTACT (CONTACT CLOSED = WINDOW CLOSED)

OCCUPANCY SENSOR (CONTACT CLOSED = OCCUPIED)

EARTH

GROUND

W7751D,F SUBBASE

TRIAC EQUIVALENT CIRCUIT

24V

COM

123456789101112 13 14 15 16 17 18 19 20 21

24 VAC

EARTH GROUND WIRE LENGTH SHOULD BE HELD TO A MINIMUM.

USE THE HEAVIEST GAUGE WIRE AVAILABLE, UP TO 14 AWG (2.O MM2) WITH A MINIMUM OF 18 AWG (1.O MM2), FOR EARTH GROUND WIRE.

TO ASSURE PROPER ELECTRICAL CONTACT, WIRES MUST BE TWISTED

TOGETHER BEFORE INSERTION INTO THE TERMINAL BLOCK. TERMINALS 1 AND 3 LOAD POWER.

CONTACTS MUST BE SUITABLE FOR DRY SWITCHING, 5V AT 10 mA. USE

SEALED TYPE, GOLD FLASHED OR PIMPLED CONTACTS. 24 VAC TO OTHER CONTROLLERS.

31 30 29 28 27 26 25

EARTH

GROUND

DI-1(OCCUP)

OUT 3

OUT 2

OUT 4

OUT 1

COM

NOTE: LOAD POWER CAN BE CONNECTED TO EITHER TERMINAL 1 OR 3.

DI-2

AI-2 FOR

(WINDOW)

W7751 D&F

OUT 5

OUT 6

POWER

CONTACTOR (24 VAC)

WALL MODULE

SENSOR

GROUND

AI-1 SETPT

NOT

EARTH

GROUND

NOT

OUT 7

OUT 8

LINE

Fig. 69. Typical W7751D,F series or parallel fan wiring

diagram. (For note 2, refer to Fig. 58.)

See Fig. 70 to wire a pneumatic Series 60 Floating transducer to a W7751D,F or Fig. 71 to wire a PWM Valve Actuator to a W7751D,F controller.

NOTE: Make sure to set the Configuration DIP Switch as

shown in Fig. 71. Switches 1 through 3 set the timing of the ML7984B valve actuator to match the W7751D,F outputs (0.1 sec. Min. with a max. time of 25.6 sec.). Switch 4 determines the action of the actuator (Off = Direct Acting, On = Reverse Acting).

T7770C WALL MODULE

AIR FLOW

∆P PICKUP

24 23

LED

BYPASS

COMMUNICATIONS

USED

NOT

USED

SERIES OR PARALLEL FAN

7 6985432

LED

BYPASS

E-BUS NETWORK

MICROBRIDGE ∆P SENSOR

NETWORK

DI-3

GND

SET PT

SENSOR

JACK FOR

E-BUS

GND

E-BUS

ACCESS

LOW

NOT

USED

E-BUS

M12619

W7751D,F SUBBASE

TRIAC EQUIVALENT CIRCUIT

24V

COM

12345678 9 10 11 12 13 14 15 16 17 18 19 20 21

24 VAC

TO ASSURE PROPER ELECTRICAL CONTACT, WIRES MUST BE TWISTED TOGETHER BEFORE INSERTION.

REVERSE WIRES (INCREASE/DECREASE) TO REVERSE ACTION

(DIRECT/REVERSE). MAKE SURE ALL TRANSFORMER/POWER WIRING IS AS SHOWN:

REVERSING TERMINATIONS WILL RESULT IN EQUIPMENT MALFUNCTION.

OPTIONAL 24 VAC WIRING TO NEXT CONTROLLER. USE 1/4 IN (6 MM) PNEUMATIC TUBING. MINIMUM BRANCH LINE MUST BE

6 FT. (1.8M) OR LONGER.

TERMINALS 1 AND 3 LOAD POWER. 24 VAC TO OTHER CONTROLLERS.

OUT 3

OUT 2

OUT 4

OUT 1

COM

MMC325 PNEUMATIC TRANSDUCER

24 (H)

24 (N)

OUT 5

24 (H)

OUT 6

OUT 7

24 (N)

INCREASE

OUT 8

DECREASE

NOT

USED

NOT

PNEUMATIC

COMMUNICATIONS

NETWORK

DI-3

VALVE

GND

E-BUS

VAC

USED

NOT

USED

M12620

Fig. 70. Typical W7751D,F pneumatic transducer wiring

diagram. (For notes 2 and 3, refer to Fig. 58.)

W7751D,F SUBBASE

TRIAC EQUIVALENT CIRCUIT

24V

COM

123456789101112131415161718192021

24 VAC

MAKE SURE ALL TRANSFORMER/POWER WIRING IS AS SHOWN: REVERSING TERMINATIONS WILL RESULT IN EQUIPMENT MALFUNCTION.

TO ASSURE PROPER ELECTRICAL CONTACT, WIRES MUST BE TWISTED

TOGETHER BEFORE INSERTION. TERMINALS 1 AND 3 LOAD POWER.

3 4

TURN POWER OFF BEFORE SETTING THE DIP SWITCHES. 24 VAC TO OTHER CONTROLLERS.

OUT 3

OUT 2

OUT 4

OUT 1

COM

PWM VALVE ACTUATOR

T6 T5 C B W R

24 (H)

24 (N)

OUT 5

PWM

(H 24 VAC)

OUT 6

OUT 7

OUT 8

ML7984B

PWM OUTPUT

FROM CNTRL

NOT

USED

COMMUNICATIONS

NETWORK

NOT

USED

E-BUS

DI-3

GND

1234

ON OFF

CONFIGURATION DIP SWITCHES (LOCATED ADJACENT TO THE INPUT TERMINAL BLOCK)

24 VAC

NOT

M12621

USED

74-2949–1 56

Fig. 71. Typical W7751D,F PWM reheat and

PWM peripheral heat valve actuator wiring diagram.

(For notes 2 and 3, refer to Fig. 58.)

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

:+9HUVLRQ

The W7751H has the terminal arrangement shown in Fig.

72. Fig. 72 through 77 provide detailed wiring diagrams for the W7751H. The W7751H uses terminal blocks for all wiring connections All wiring must comply with applicable electrical codes and ordinances or as specified on installation wiring diagrams.

NOTE: If an Excel 10 VAV Controller or Zone Manager is

7 69 8 54321

LED

SET PT

BYPASS

SENSOR

AIR FLOW ∆P PICKUP

T7770C WALL MODULE

AIR FLOW DIRECTION

LOW

MICROBRIDGE

24 VAC

∆P SENSOR

NOT EARTH GROUND

BYPASS

SENSOR

GND

SET PT

COM

24 VAC

EARTH

12345678 9101112

WALL MODULE

GND

E-BUS

W7751H

LED

OUT 1

COMM OUT

JACK FOR E-BUS NETWORK ACCESS

TRIAC EQUIVALENT CIRCUIT

E-BUS

OUT 2

COMM IN

1 EARTH GROUND

NOTE: LOAD POWER WIRE IS CONNECTED TO TERMINAL 1.

EARTH GROUND WIRE LENGTH SHOULD BE HELD TO A MINIMUM. USE

THE HEAVIEST GAUGE WIRE AVAILABLE, UP TO 14 AWG (2.0 MM WITH A MINIMUM OF 18 AWG (1.0 MM

TO ASSURE PROPER ELECTRICAL CONTACT, WIRES MUST BE TWISTED

TOGETHER BEFORE INSERTING INTO THE TERMINAL BLOCK.

OPEN SIGNAL

COM

STEM UP

M6410 SERIES 60 VALVE ACTUATOR

TWO OR THREE-WAY VALVE

), FOR EARTH GROUND WIRE.

STEM DOWN

CLOSED SIGNAL

)

Fig. 72. W7751H modulating reheat valve wiring

diagram. (For Note 2 instructions, refer to Fig. 58.)

M10525

57 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

AIR FLOW ∆P PICKUP

LOW

T7770C WALL MODULE

AIR FLOW DIRECTION

MICROBRIDGE ∆P SENSOR

NOT EARTH GROUND

7 69 8 54321

LED

SET PT

GND

BYPASS

SENSOR

E-BUS

W7751H

E-BUS

JACK FOR E-BUS NETWORK ACCESS

TRIAC EQUIVALENT CIRCUIT

COMM OUT

AIR FLOW ∆P PICKUP

LOW

T7770D WALL MODULE

AIR FLOW DIRECTION

MICROBRIDGE ∆P SENSOR

NOT EARTH GROUND

7 69 8 54321

LED

SET PT

GND

BYPASS

SENSOR

E-BUS

W7751H

E-BUS

JACK FOR E-BUS NETWORK ACCESS

TRIAC EQUIVALENT CIRCUIT

COMM OUT

BYPASS

SENSOR

GND

SET PT

COM

24 VAC

EARTH

12345678 9101112

24 VAC

EARTH GROUND

NOTE: LOAD POWER WIRE IS CONNECTED TO TERMINAL 1.

EARTH GROUND WIRE LENGTH SHOULD BE HELD TO A MINIMUM. USE THE HEAVIEST GAUGE WIRE AVAILABLE, UP TO 14 AWG (2.0 MM WITH A MINIMUM OF 18 AWG (1.0 MM

TO ASSURE PROPER ELECTRICAL CONTACT, WIRES MUST BE TWISTED TOGETHER BEFORE INSERTING INTO THE TERMINAL BLOCK.

WALL MODULE

LINE POWER

LED

STAGE 1

), FOR EARTH GROUND WIRE.

OUT 1

OUT 2

STAGE 2

CONTACTORS 24 VAC ONLY

Fig. 73. W7751H 2-stage reheat wiring diagram.

(For Note 2 instructions, refer to Fig. 58.)

E-BUS

)

COMM IN

M10526

BYPASS

SENSOR

GND

SET PT

COM

24 VAC

EARTH

12345678 9101112

24 VAC

EARTH GROUND

WALL MODULE

LED

WIRED FOR MODULATING OR STAGED REHEAT. SEE FIG. 17 OR FIG. 18.

OUT 1

OUT 2

E-BUS

COMM IN

C7770A AIR TEMPERATURE SENSOR

EARTH GROUND WIRE LENGTH SHOULD BE HELD TO A MINIMUM. USE THE HEAVIEST GAUGE WIRE AVAILABLE, UP TO 14 AWG (2.0 MM WITH A MINIMUM OF 18 AWG (1.0 MM

TO ASSURE PROPER ELECTRICAL CONTACT, WIRES MUST BE TWISTED TOGETHER BEFORE INSERTING INTO THE TERMINAL BLOCK.

NOTE: AIR TEMPERATURE SENSOR CANNOT BE USED WITH EITHER THE

T7750B OR C WALL MODULE.

), FOR EARTH GROUND WIRE.

Fig. 74. W7751H discharge air sensing

(For Note 2 instructions, refer to Fig. 58.)

See Fig. 75 to wire a pneumatic Series 60 Floating transducer to a W7751H or Fig. 76 to wire a PWM Valve Actuator to a W7751H controller.

)

M10527A

74-2949–1 58

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

W7751H

NOT EARTH GROUND

LED

GND

BYPASS

SENSOR

SET PT

COM

24 VAC

EARTH

12345678 9101112

WALL MODULE

TRIAC EQUIVALENT CIRCUIT

E-BUS

OUT 2

OUT 1

MMC325 PNEUMATIC TRANSDUCER

24 (H)

24 VAC

REVERSE WIRES (INCREASE/DECREASE) TO REVERSE ACTION (DIRECT/REVERSE).

MAKE SURE ALL TRANSFORMER/POWER WIRING IS AS SHOWN; REVERSING TERMINATIONS WILL RESULT IN EQUIPMENT MALFUNCTION.

OPTIONAL 24 VAC WIRING TO NEXT CONTROLLER. USE 1/4 IN. (6 MM) MINIMUM PNEUMATIC TUBING. BRANCH LINE

MUST BE 6 FT (1.8M) OR LONGER.

24 (N)

24 (H)

24 (N)

DECREASE

INCREASE

PNEUMATIC VALVE

M11856

Fig. 75. Pneumatic Series 60 Floating transducer to

W7751H.

NOTE: Make sure to set the Configuration DIP Switch as

shown in Fig. 76 and 77. Switches 1 through 3 set the timing of the ML7984B valve actuator to match the W7751H outputs (0.1 sec. Min. with a max. time of 25.6 sec.). Switch 4 determines the action of the actuator (Off = Direct Acting, On = Reverse Acting).

W7751H

NOT EARTH GROUND

BYPASS

SENSOR

GND

SET PT

COM

24 VAC

EARTH

12345678 9101112

WALL MODULE

LED

TRIAC EQUIVALENT CIRCUIT

OUT 1

REHEAT VALVE

ACTUATOR

PWM VALVE ACTUATOR

24 (H)

T6 T5 C B W R

24 VAC

MAKE SURE ALL TRANSFORMER/POWER WIRING IS AS SHOWN;

REVERSING TERMINATIONS WILL RESULT IN EQUIPMENT MALFUNCTION.

TO ASSURE PROPER ELECTRICAL CONTACT, WIRES MUST BE TWISTED TOGETHER BEFORE INSERTING INTO THE TERMINAL BLOCK.

PWM OUTPUT

24 (N)

PWM (H 24 VAC)

PWM VALVE ACTUATOR

24 (H)

T6 T5 C B W R

CONFIGURATION DIP SWITCHES

LOCATED ADJACENT TO THE INPUT

ML7984B

FROM CNTRL

ML7984B

PWM OUTPUT

24 (N)

FROM CNTRL

PWM (H 24 VAC)

PERIPHERAL REHEAT

VALVE ACTUATOR

1234

OFF

TERMINAL BLOCK ON ML7948B

Fig. 76. W7751H to PWM Valve Actuator.

OUT 2

E-BUS

M11857

59 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

W7751H

TRIAC

NOT EARTH GROUND

EQUIVALENT CIRCUIT

YELLOW

ORANGE BROWN

M12198

BYPASS

SENSOR

GND

SET PT

COM

24 VAC

EARTH

LINE POWER

CONTACTOR

(24 VAC)

WALL MODULE

12345678 9101112

LED

SERIES OR

PARALLEL

FAN

OUT 1

OUT 2

ML7984B

PWM VALVE ACTUATOR

24 (H)

T6 T5 C B W R

24 VAC

MAKE SURE ALL TRANSFORMER/POWER WIRING IS AS SHOWN; REVERSING TERMINATIONS WILL RESULT IN EQUIPMENT MALFUNCTION.

TO ASSURE PROPER ELECTRICAL CONTACT, WIRES MUST BE TWISTED TOGETHER BEFORE INSERTING INTO THE TERMINAL BLOCK.

24 (N)

PWM (H 24 VAC)

PWM OUTPUT

FROM CNTRL

REHEAT VALVE

ACTUATOR

E-BUS

M11858

Fig. 78. 209541B FTT Termination Module

The module has three lead wires, but only two are attached to the E-Bus network .To install the termination module, refer to the

E-Bus Wiring Guidelines

, form 742865 for complete rules on network topology and termination module locations. For 209541B Excel 10 FTT Termination module placement and wiring options, see Fig. 79. As with other E-Bus connections, polarity is not important.

Fig. 77. PWM Valve Actuator and Series or Parallel Fan

to W7751H.

E-Bus Termination Module

E-Bus Free Topology Transceiver (FTT) networks require termination. Depending on the network topology, one or more FTT Termination Modules may be required, see Fig.

78. If an FTT Repeater is required in the network, their onboard terminators can be used in place of the 209541B Termination Module, see Fig. 79. Refer to the

FTT Repeater Installation Instructions

, form, 95-7555, for

information on enabling the on-board network terminators. FTT networks are very flexible and convenient for

installation and maintenance. However it is imperative to carefully plan the network layout, and create and maintain accurate layout documentation.

Q7740A,B

74-2949–1 60

USE FOR DOUBLY TERMINATED DAISY-CHAIN SEGMENT

INTERNAL

TERMINATION

NETWORK

INTERNAL

TERMINATION

NETWORK

3 4 5 6 7 8

TERMINAL BLOCK FOR Q7750A ZONE MANAGER

FIELD INSTALLED JUMPER

E-BUS E-BUS

FIELD INSTALLED JUMPER

SINGLY TERMINATED SEGMENT

(A) Enabling Internal Termination Network using

jumpers in the Q7750A Zone Manager

E-BUS

PART NO. 209541B FTT TERMINATION MODULE

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

PART NO. 209541B FTT TERMINATION MODULE

E-BUS

(B) Installing E-Bus Termination Module at W7751

SEGMENTS

O I II O I II

W7751D,F

PART NO. 209541B FTT TERMINATION MODULE

SWITCHES ON SIDE, UNDER Q7740A,B CIRCUIT BOARD. USE SMALL FLAT OBJECT TO MOVE THE SWITCHES AS NEEDED FROM POSITION O (NO TERMINATION) POSITION I (SINGLY TERMINATED) POSITION II (DOUBLY TERMINATED)

E-BUS

W7751B

INSERT INTO TERMINALS 1 AND 2 WITH THE E-BUS WIRE. TERMINATION MODULE IS PHYSICALLY LOCATED BEHIND THE T7750 INSIDE THE 2 X 4 OR 60 MM BOX.

at 2 x 4 or 60 mm box-mounted T7750

PART NO. 209541B FTT TERMINATION MODULE

E-BUS

(D) E-Bus Termination network switches in the Q7740A, B Repeaters

(E) Installing E-Bus Termination Module

at W7751H (terminals 11 and 12)

Fig. 79. E-Bus termination wiring options.

6WHS2UGHU(TXLSPHQW

After compiling a bill of materials through completion of the previous application steps, refer to Table 10 for ordering information. Contact Honeywell for information about Controllers and Wall Modules with no logo.

LABEL ON Q7740B 4 WAY REPEATER NOTE: Q7740B 4 WAY REPEATER SHOWN, Q7740A 2 WAY REPEATER

HAS TWO SWITCHES.

RJ-45 PLUG

Q7751A E-BUS ROUTER

NET 2

PART NO. 209541B FTT TERMINATION MODULE

(F) Twist wires and attach wire nuts to RJ-45 Adapter

cables, E-Bus segment wires and Termination Module

to connect to a Q7751A,B Router

E-BUS

WIRE NUTS

M11859

61 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Table 10. Excel 10 W7751 Controller Ordering Information.

Part Number Product Description Comments

Excel 10 W7751 Controllers

W7751B2002 OEM Base Board (Only in bulk pack of 10) Order 207912 Snaptrack (see Accessories) W7751D2008 Base Board, Mounting Enclosure With Internal W i ring W7751F2003 Base Board, Mounting Enclosure With External Wiring W7751H2009 Smart VAV Actuator is a factory-combined VAV

Box Controller and an ML6161B1000 Actuator

Y7751D2006 W7751D2008 Base Board, Mounting Enclosure

packed with ML6161B1000 Actuator

Y7751F2001 W7751F2003 Base Board, Mounting Enclosure

packed with ML6161B1000 Actuator

W7751D,F Subbases and Electronics Assembly

206166A Subbase for W7751D with Internal Wiring Available in bulk pack of 10 each (for use

206167A Subbase for W7751F with External Wiring Available in bulk pack of 10 each (for use

206168B Cover and Electronics for W7751D,F Contains Circuit Board for use with 206166A

T7770 Wall Modules

T7770A1006 Sensor, Subbase Use with Excel 5000 or Excel 10 Controllers T7770A1014 Sensor, Subbase, no logo Use with Excel 5000 or Excel 10 Controllers T7770A2004 Sensor, Subbase, Network Connection Use with Excel 5000 or Excel 10 Controllers T7770A2012 Sensor, Subbase, Network Connection, no logo Use with Excel 5000 or Excel 10 Controllers T7770B1004 Sensor, Subbase, Setpoint, Network Connection Setpoint uses degrees F Absolute (use with

T7770B1046 Sensor, Subbase, Setpoint, Network Connection Setpoint is relative (use with Excel 5000 or

T7770B1012 Sensor, Subbase, Setpoint, Network Connection,

no logo

T7770B1020 Sensor, Subbase, Setpoint, Network Connection Setpoint uses degrees C Absolute (use with

T7770B1053 Sensor, Subbase, Setpoint, Network Connection,

no logo

T7770B1038 Sensor, Subbase, Setpoint, Network Connection,

no logo

T7770C1002 Sensor, Subbase, Setpoint, Bypass, Network

Connection

T7770C1044 Sensor, Subbase, Setpoint, Bypass, Network

Connection

T7770C1028 Sensor, Subbase, Setpoint, Bypass, Network

Connection

T7770C1010 Sensor, Subbase, Setpoint, Bypass, Network

Connection, no logo

T7770C1051 Sensor, Subbase, Setpoint, Bypass, Network

Connection, no logo

T7770C1036 Sensor, Subbase, Setpoint, Bypass, Network

Connection, no logo

Plenum Rated

With Internal Wiring

With External Wiring

with 206168B VAV Controller Assembly).

or 206167A Subbase (available only in bulk pack of 10).

Excel 5000 or Excel 10 Controllers)

Excel 10 Controllers) Setpoint uses degrees F Absolute (use with

Excel 5000 or Excel 10 Controllers)

Excel 5000 or Excel 10 Controllers) Setpoint is relative (use with Excel 5000 or

Excel 10 Controllers) Setpoint uses degrees C Absolute (use with

Excel 5000 or Excel 10 Controllers) Setpoint uses degrees F Absolute (use with

Excel 5000 or Excel 10 Controllers) Setpoint is relative (use with Excel 5000 or

Excel 10 Controllers) Setpoint uses degrees C Absolute (use with

Excel 5000 or Excel 10 Controllers) Setpoint uses degrees F Absolute (use with

Excel 5000 or Excel 10 Controllers) Setpoint is relative (use with Excel 5000 or

Excel 10 Controllers) Setpoint uses degrees C Absolute (use with

Excel 5000 or Excel 10 Controllers)

(continued)

74-2949–1 62

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Table 10. Excel 10 W7751 Controller Ordering Information (Continued).

Part Number Product Description Comments

T7770 Wall Modules (Continued)

T7770D1000 Sensor, Subbase, Bypass, Network Connection Use with Excel 5000 or Excel 10 Controllers T7770D1018 Sensor, Subbase, Bypass, Network Connection,

T7780A1004 Sensor, Digital Display Wall Module with Network

T7780A1012 Sensor, Digital Display Wall Module with Network

C7770A1006 Air Temperature Sensor.

C7031B1033 Duct discharge air, hot water 20K ohm NTC 5 in. (127mm) probe use 112622AA

C7031C1031 Duct discharge air 20K ohm NTC 18 in. (457mm) probe. C7031D1062 Hot or chilled water 20K ohm NTC 5 in. (127mm) probe plus 3 in. (76mm) for

C7031F1018 Outdoor air temperature 20K ohm NTC — C7170A1002 Outdoor air temperature 20K ohm NTC — C7031J1050 Duct discharge air (averaging) 20K ohm NTC 144 in. (3.7m) C7031K1017 Hot or chilled water (strap-on) 20K ohm NTC — C7100A1015 PT3000 air temperature sensor Intended for monitoring or differential control

Q7750A2003 Excel 10 Zone Manager Free Topology Transceiver (FTT) Q7751A2002 Router FTT FTT Q7752A2001 Serial Interface FTT XD 505A Standard C-Bus Communications Submodule — Q7740A1008 Excel 10 2-way Repeater Used to extend the length of the E-Bus.

Q7740B1006 Excel 10 4-way Repeater Used to extend the length of the E-Bus.

XD 508 C-Bus Communications Submodule (1 megabit

209541B Termination Module One or two required per E-Bus segment 205979 Operator Terminal Cable for E-Bus Serial interface to wall module or controller

EL7628A1007, EL7680A1008 Infrared Occupancy Sensors —

EL7611A1003, EL7612A1001 Ultrasonic Occupancy Sensors —

EL7630A1003, EL7621A1002, EL7621A1010 Power Supply/Control Units for Occupancy

no logo

T7780 Digital Display Wall Modules

Jack, Honeywell Logo

Jack, No Logo

Excel 10 Sensors

20K ohm NTC

nonlinearized

Echelon® Based Components and Parts

baud rate) —

Accessories

sensors

Use with Excel 5000 or Excel 10 Controllers

Degrees F Absolute (default)

Duct-mounted sensor that functions as a primary and/or secondary sensor.

Immersion well

insulation depth

(staged)

Contains built in termination modules that are user selectable.

—

(continued)

63 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Table 10. Excel 10 W7751 Controller Ordering Information (Continued).

Part Number Product Description Comments

Accessories (Continued)

MMC325-010, MMC325-020

MMCA530 DIN rail adapter for MMC325 Transducers — MMCA540 Metal enclosure for MMC325 Transducers — ML6161B1000 Damper Actuator Series 60 (90 Sec.) — ML7984B Valve Actuator PWM Use with V5011 and V5013F,G Valves M6410A Valve Actuator Series 60 Use with V5852A/V5853A or

ML684A1025 Versadrive Valve Actuator with linkage, Series 60 Use with V5011 and V5013 Valves ML6464A1009 Direct Coupled Actuator (DCA), 66 lb-in., Series 60 — ML6474A1008 DCA, 132 lb-in. torque, Series 60 — ML6185A1000 DCA, 50 lb-in. spring return, Series 60 — V5852A or V5862A Two-way terminal unit water valve; 0.19, 0.29,

V5853A or V5863A Three-way mixing terminal unit hot water valve;

R8242A Contactor, 24 Vac coil, DPDT — AT72D, AT88A, etc. Transformers — EN 50 022 DIN rail 35 mm by 7.5 mm (1-3/8 in. by 5/16 in.) Obtain locally: Each controller requires 5 in. 207912 Snaptrack, 3.25 in. (82 mm) by 9 in. (228 mm) for

4074EYD Wallplate for T7770 and T7780 Wall Modules For covering an existing hole on a wall. Fair-Rite 044316451 or

equivalent Honeywell part 229997CB

— 5-micron Air Filters for Microbridge Sensor. Required for dusty environments. Obtain

— Serial Interface Cable, male DB-9 to female DB-9

Honeywell (U.S. only) AK3791 (one twisted pair) AK3792 (two twisted pairs)

Honeywell (U.S. only) AK3781 (one twisted pair) AK3782 (two twisted pairs)

Honeywell AK3725 (U.S.) Inputs: 18 AWG (1.0 mm2) five wire cable bundle. Standard thermostat wire Honeywell AK3752 (U.S.

only), typical or equivalent Honeywell AK3702 (U.S.

only), typical or equivalent Honeywell AK3712 (U.S.

only), typical or equivalent Honeywell AK3754 (U.S.

only), typical or equivalent

Pneumatic Retrofit Transducers. Select pressure range: 0 to 10 psi (68.97 kPa), or 0 to 20 psi (137.93 kPa). Use to control Pneumatic reheat valves

V5862A/V5863A Valves

Use with M6410 Valve Actuator. Closeoff

0.47, 0.74, 1.2, and 1.9 Cv 1/2 in. npt (13 mm) or

2.9 and 4.9 Cv 3/4 in. npt (19 mm)

rating for 0.19 to 1.9 Cv is 65 psi; for 2.9 and

4.9, Cv is 45 psi. (Coefficient of volume or capacity index Cv = gallons per minute divided by the square root of the pressure drop across the valve.)

Use with M6410 Valve Actuator. Closeoff

0.19, 0.29, 0.47, 0.74, 1.2, and 1.9 Cv 1/2 in. npt (13 mm) or 2.9 and 4.9 Cv 3/4 in. npt (19 mm)

rating for 0.19 to 0.74 Cv is 55 psi; 1.2, and

1.9 Cv is 22 psi; 2.9 and 4.9 Cv is 26 psi.

(Pack of 10)

use with W7751B Controller

Split ferrite cores Split ferrite cores must also be in a metal

enclosure when used with W7751B VAV Controller.

locally.

Cabling

Obtain locally from any computer hardware

or female DB-25.

E-Bus (plenum): 22 AWG (0.325 mm

) twisted pair

solid conductor, nonshielded or Echelon



vendor. Level IV 140°F (60°C) rating

approved shielded cable.

E-Bus (nonplenum): 22 AWG (0.325 mm

) twisted

pair solid conductor, nonshielded or Echelon



Level IV 140°F (60°C) rating

approved shielded cable.

Outputs/Power: 14 to 18 AWG (2.0 to 1.0 mm2) NEC Class 2 140°F (60°C) rating

18 AWG (1.0 mm2) twisted pair Non-plenum

16 AWG (1.3 mm2) twisted pair Non-plenum

14 AWG (2.0 mm2) two conductor Non-plenum

74-2949–1 64

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

6WHS&RQILJXUH&RQWUROOHUV

Excel E-Vision PC Software is used to configure W7751 Controllers to match their intended application. The EVision User’s Guide form, 74-2588 provides details for operating the PC software. Refer to the E-Vision User’s Guide form, 74-2588 for application selections and steps to configure the VAV controllers.

*HQHUDO

The process of configuring Excel 10 VAV Controllers is the same for the W7751B (OEM) model as it is for the W7751D,F,H models. In all four cases, the process involves giving the Excel 10 VAV Controller information. There are three general categories of information:

1. Hardware I/O Assignment The Excel 10 VAV Controller must be informed about the physical equipment wired to its terminals.

2. Personality Information Each controller must be given information about its particular VAV box and the zone it serves. Examples are the Space Temperature Setpoints for each mode (Occupied Cool, Occupied Heat, Standby Cool, etc.), the Maximum and Minimum Flow Setpoints, etc., balancing the box is also included in this category.

3. ID Number Each Excel 10 Controller must be assigned the Identification Number that gives the device a specific identity on the bus. This is required for proper network communications.

The specific parameters to be configured in each of these three categories are discussed in the following subsections. For a complete list of all Excel 10 VAV Controller User Addresses, see Appendix D.

NOTE: To set the following configuration parameters, use

the Honeywell CARE/ E-Vision PC tool. These sections describe the various parameters and the allowable settings. For details on using the PC tool, refer to the E-Vision User’s Guide form, 742588 which provides details for operating the PC software. Refer to the E-Vision User’s Guide form, 74-2588 for application selections and steps to configure the Excel 10 W7751B,D,F,H VAV controllers.

IMPORTANT

The W7751H Smart VAV Actuator is a physically smaller controller in the Excel 10 family product line. It has a factory-mounted ML6161B1000 Actuator and was designed for basic VAV box control applications. It has all of the control and communications functionality of the W7751B,D,F Controllers with the exception of the following. Physical digital inputs for window open/closed or an occupancy sensor or physical outputs for stage three reheat. It also does not contain a network access communications jack or a selftest input.

+DUGZDUH,2$VVLJQPHQW

Excel 10 VAV Controller models have specific terminals preassigned for the wall module inputs and output. Each of the other allowable analog (resistive) and digital inputs along with digital outputs are fully configurable through the E-Vision tool and can be assigned to any of the appropriate input or output terminals. The available options for mechanical equipment are:

Fan Type

Excel 10 VAV Controllers support five possibilities for the type of Fan in the VAV box

1. None (no VAV box fan exists).

2. Series (a Series type; VAV box fan exists).

3. Parallel Temp (a Parallel type, VAV box fan exists and is used in conjuction with reheat)). This allows the VAV box parallel fan, to draw in external return plenum or room temperature air, to add warm air to the VAV discharge air. This parallel fan temp acts like the first stage of reheat.

4. Parallel Flow (a Parallel type, VAV box fan exists and is used when there is not enough primary system air) This allows the VAV box parallel fan to draw in external return plenum or room temperature air to be added to the VAV discharge if the airflow is below a certain flow. This parallel flow guarantees a certain amount of air being delivered to the space, such as an application to prevent condensation of humid air on a window.

5. Parallel PWM (a Parallel type, VAV box fan exists and the fan speed is controlled based on cool demand)

Reheat Definitions

A floating actuator is a motor that opens when control voltage is applied to the open terminal, and closes when control voltage is applied to the close terminal. For example a 90 second Series 60 motor will open to 50 percent if voltage is applied to the open terminal for 45 seconds (assuming the motor started in the closed position).

A PWM actuator is an actuator that will be closed at a minimum single pulse width measured in seconds and will be opened at a maximum single pulse width. For example on a 28 second PWM actuator, a 0.1 second pulse will close the actuator to zero percent, a 14 second pulse will move that actuator to 50 percent and a 28 second pulse will move the actuator to 100 percent position. In general, PWM actuators will require the command to be repeated every pulse period, so in this example a 50 percent pulse of 14 seconds must be initiated every 28.1 seconds. If the signal is given once and then the connection is either open or shorted, the actuator will stay in its current position.

Stages are digital on/off controls such as steam valves, water valves, or electric coils. Reheat stages are typically turned off if there is insufficient air flow. Reheat stages are not affected by air flow if a series fan ensuring air flow is used. If reheat stages are configured and no stages are active, the controller will control at Min air flow. If one or more stages are active and proportional reheat is disabled, then the controller will control at Reheat air flow. Peripheral Stages do not care about air flow.

65 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Peripheral Heat is a valve or stage used to control perimeter radiation.

Reheat Heat is a valve or stage used to warm up cool air inside the air duct being controlled.

Proportional reheat (if enabled) allows the reheat air flow to change proportionally, between 0 to 100 percent reheat demand , the flow control setpoint will change from min flow setpoint to Max Reheat flow setpoint, respectively. Digital reheat stages will pick appropriate proportional values.

Reheat Type

There are sixteen possibilities for the type of reheat coil(s) in the box:

1. No_Local_Reheat (no reheat coil exists in the VAV box).

2. Elec_OneStage(a staged On/Off control only, reheat coil exists in the box).

3. Elec_TwoStage (two stages of reheat exist in the VAV box).

4. Elec_ThreeStage (three stages of reheat exist in the VAV box) ;not available for the W7751H.

5. Elect_ThreeStageBin using two physical stages of reheat controlled as three, for example: stage 1, stage 2, then stage 1 and 2 together. This type of reheat works similar to a 3-way light bulb: Off, low , medium and high using just two elements. Elect_ThreeStageBin is available on the W7751H.

6. Elec_OneStagePeriph(a staged On/Off control only, baseboard radiation is an example of peripheral heating). This stage is not affected by air flow safeties.

7. Float_ReHeat** Modulating reheat valve (Series 60 floating control provided through two Digital Output points, one that pulses to open a steam or hot water valve and one that pulses to close the valve). Minimum position refers to the network variable nciAux1SetPt.ubPeriphMinPosS1.

8. Float_Periph* Modulating peripheral heat valve (Series 60 floating control provided through two Digital Output points, one that pulses to open a steam or hot water valve and one that pulses to close the valve).

9. Float_ReHeat_Periph* One modulating reheat stage and one modulating peripheral reheat stage. Both stages are controlled via floating motors. Control turns on reheat valve first then peripheral valve.

10. Float_Periph_ReHeat* One modulating reheat stage and one modulating peripheral reheat stage. Both stages are controlled via floating motors. Control turns on peripheral valve first then reheat valve.

11. PWM_ReHeat** One modulating reheat stage controlling via a pulse width modulation motor.

12. PWM_Periph* One modulating Peripheral reheat stage controlling via a pulse width modulation motor.

13. PWM_ReHeat_Periph* One modulating reheat stage and one modulating peripheral reheat stage. Both stages are controlled via a pulse width modulation motor. Control turns on reheat valve first then peripheral valve.

14. PWM_Periph_ReHeat* One modulating reheat stage and one modulating peripheral reheat stage. Both stages are controlled via a pulse width modulation motor. Control turns on peripheral valve first then reheat valve.

74-2949–1 66

15. DualDuctReHeat Reheating is provided by a second hot duct. A satellite controller can be used in conjunction with the master controller to control the hot duct. The master exports the shared values via SrcMaster (bound to DestSatellite in the Satellite controller), and gets the return value from the satellite via SrcBoxFlow (bound to DestFlowTrack in the Master controller).

16. FloatHotDuctPrDep*** Reheating using a hot duct damper controlled by the floating reheat outputs in the pressure dependent case only.

NOTES: Pneumatic hot water valves can be

controlled with an MMC325 Pneumatic Transducer.

* applies minimum position to the peripheral value

during all modes (Cooling, Reheat, Etc.).

** applies minimum position to the reheat value during

all modes (Cooling, Reheat, Etc.).

*** applies minimum position to the reheat value during

all modes except Cooling.

Flow Type

1. SD_Normal_Flow (The flow is controlled to satisfy the temperature control algorithm).

2. Flow_Tracking (the temperature control is turned off and the air flow setpoint equals the sum of SrcFlowTrack and Flow Offset (Cntrl Parameters). Flow tracking can be used to pressurize or depressurize an area by having one or more VAV boxes deliver air to the space and one or more exhaust air from the space. By delivering or exhausting more air than is normally exhausted or delivered, the space can be pressurized or depressurized. Typically one or more boxes deliver air to the space and one box exhausts air from the space. Several nodes (controlling incoming air) can be bound in a daisy-chain to sum the total incoming flow. The last incoming air node is bound to the exhaust node. The exhaust node has Flow Type set to Flow_Tracking and controls the exhaust air according to Flow Offset (Cntrl Parameters) and SrcFlowTrack.

3. Share Wall Module (The temperature control loop is turned off and the flow is controlled by the wall module at another node. In this case SrcMaster is bound to DestSatellite of another node and the information received in SrcMaster is used to control the air flow. The other node has the temperature sensor connected to it and controls the space temperature by its own damper and the other dampers of all nodes bound to it. This feature (Single Duct Box Type only), is used when only one temperature sensor is used in a large area to control several nodes).

4. Master_Const_Flow -master (The master node is connected to a cold air supply duct in a dual duct application and controls the air flow to the space. The satellite is connected to the hot duct. The master commands the satellite nodes damper via DestSatellite. The temperature control loop in the master is enabled and the temperature control loop in the satellite is disabled. Both the master and satellite have air flow sensors. The master controls the satellite so that the total air supplied is always a constant volume. When cooling is called, more Cool air is supplied to the space. When heating is called, more warm air is supplied to the space).

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

5. Satel_Const_Flow -satellite (Refer to the description for Master_Const_Flow).

6. Master_Flow_Mix -master (The master node is connected to a cold air supply duct in a dual duct application and controls the air flow to the space. The satellite node is connected to the hot duct. The master node commands the satellite nodes damper via DestSatellite. Both the master and satellite have air flow sensors. The temperature control loop is enabled in the master and disabled in the satellite. Both warm air and cold air can be supplied to the space at the same time in the transition from heating to cooling or from cooling to heating - Flow mixing).

7. Satel_Flow_Mix -satellite (Refer to the description for Master_Flow_Mix).

8. Master_No_Flow_Mix -master (The master node is connected to a cold air supply duct in a dual duct application and controls the air flow to the space. The satellite node is connected to the hot duct. The master node commands the satellite nodes damper via DestSatellite. Both the master and satellite have air flow sensors. The temperature control loop is enabled in the master and disabled in the satellite. Only warm air or cold air may be supplied to the space at the same time. When cooling is called, only Cool air is supplied to the space. When heating is called, only warm air is supplied to the space).

9. Satel_No_Flow_Mix -satellite (Refer to the description for Master_No_Flow_Mix).

10. DD_DAFlowSensor (The node is connected to control both the cold and hot air supply damper. The physical damper outputs control the cold supply damper and the reheat physical floating outputs controls the hot air damper. The node has an air flow sensor measuring the total discharge air flow. The temperature control loop is enabled, and either warm air or cold air is supplied to the space. When cooling is called, only Cool air is supplied to the space (damper on hot duct is fully closed). When heating is called, only warm air is supplied to the space. There is no satellite node in this case. ReHeat Type is set to Float_ReHeat for this case).

11. DD_DAFlowSenConst (The node is connected to control both the cold and hot air supply damper. The physical damper outputs control the cold supply damper and the reheat physical floating outputs controls the hot air damper. The node has an air flow sensor measuring the total discharge air flow. The temperature control loop is enabled. Both warm air and cold air can be supplied to the space at the same time in the transition from heating to cooling or from cooling to heating. ReHeat Type is set to Float_ReHeat for this case. Measured flow controls the cold duct damper Position and space temperature controls the hot duct damper Position).

12. DD_CDFlowSensor (The node is connected to control both the cold and hot air supply damper. The physical damper outputs control the cold supply damper and the reheat physical floating outputs controls the hot air damper. The node has an air flow sensor measuring the cold duct air flow. The temperature control loop is enabled. Both warm air and cold air can be supplied to the space at the same time in the transition from heating to cooling or from cooling to heating. ReHeat Type is set to Float_ReHeat for this case. Measured flow controls the cold duct damper Position and space temperature controls the hot duct damper Position).

Miscellaneous

These additional configuration parameters can be specified:

1. Wall Module Options:

2. Air Temperature Sensor types:

3. Air flow Pickup:

4. Duct Area:

5. Optional Sensors:

A T7770 Wall Module needs to be connected

(a)

to the controller. Examples are Temperature Sensor Only or Temperature Sensor plus Bypass Switch, etc. Excel 10 VAV Controller can share wall module information with other controllers. This can be done when two or more boxes serve the same space area. In this case, the type of wall module would be Both the temperature sensor and the setpoint potentiometer can be shared. Remote setpoint type.

(b)

The user-adjustable setpoint potentiometer can work in either of two ways, uses a positive or negative offset of the programmed setpoint) or means that if the dial says 74°F, the controller uses 74°F for the setpoint if it is within the setpoint limits specified by the Standby Setpoints.

(a) Absolute_Setpoint (When SetPtKnob is set to

Absolute Middle, the setpoint knob becomes the center of the Zero Energy Band (ZEB) between the cooling and heating occupied setpoints.).

(b) Relative_Setpoint (uses a positive or negative

offset of the programmed setpoint).

discharge temperature for remote monitoring and or logging purposes.

(d) Supply_Air_Sensor is the temperature of the

air being supplied to the VAV control box. It is used by the control process to put the controller into the heat mode.

NOTE: The C7770A Air Temperature Sensor or the

The type of physical air flow pickup to be used with this box must be chosen. There is a linearization table associated with each standard type, and once selected, this table is included in the next download to the controller.

The cross-sectional area of the duct at the location of the air flow pickup must be entered. This is used to convert the measured velocity pressure into air flow in Cubic Feet per Minute (CFM) or Meters Cubed Per Hour (m3h). This value can be entered in CARE in units of square feet or (square meters) or as the duct diameter for a round duct, in inches (meters) via a list box.

Except for the W7751H, each Excel 10 VAV Controller has digital inputs for an Occupancy Sensor and or a Window Contact Sensor that is physically connected to it. Any W7751 Controller can also use another Excel 10 VAV Controller sensor(s) by sharing.

setpoint pot options are selectable in CARE/E-Vision. (Only one or the other can be selected for the W7751H Smart VAV Actuator, but not both.)

shared

absolute

, see Fig. 46.

relative

, which

(this

67 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

6. Line Voltage Frequency Selection: Can be set to 50 Hz or 60 Hz.

7. Engineering Units Selection: Choose English or metric engineering units. Refer to Table D-1 for engineering unit conversion.

NOTE: The reheat outputs can be used to control

peripheral heating equipment in the space, such as fin tube radiation. The box air flow rate will be set at the MinFlowHtgSpt (see Table 11). The MinFlowHtgSpt and the MinFlowSpt should be set to the same value when using peripheral heat.

IMPORTANT

Excel 10 VAV Controllers are not capable of controlling both a staged type reheat device and a modulating reheat device in the same VAV box.

3HUVRQDOLW\,QIRUPDWLRQ

Each controller must be given the setpoint information needed to properly control the space while operating within the parameters determined during setup and balancing. Table 11 lists these parameters along with the valid range and default values for each parameter. (See the CARE, EVision, CARE Excel 10 Zone Manager User’s Guides, forms 74-5587, 74-2588 and 74-1392, for details on setting these values using CARE/ E-Vision.)

NOTE: The parameters listed in the Personality

Information subsection and the Hardware I/O Assignment subsection of Application Step 6 are stored in EEPROM memory. The EEPROM device has a maximum 10,000 allowable number of writes. This means that these parameters should not be written to frequently by another controller that is calculating values every few seconds and sending these values to an Excel 10 VAV Controller.

Table 11. List Of Setpoint Variables.

Default User

Address Description Allowable Values

MaxFlowSpt Air flow rate not to be exceeded during normal Occupied operation. 0 to 10,000 CFM

MinFlowSpt Minimum air flow rate to be maintained during normal operation. 0 to 10,000 CFM

MinFlowHtgSpt Air flow rate to be maintained during reheat operation (Pressure

Independent – ReheatFlowSpt).

MinFlowSbySpt Air flow rate to be maintained during STANDBY operation. 0 to 10,000 CFM

CoolOccSpt* Space Temperature Setpoint to be maintained during OCC time while

in COOL mode operation.

CoolStbySpt* Space Temperature Setpoint to be maintained during STANDBY while

in COOL mode operation. This value is also used to provide an upper limit on the user adjustable remote setpoint pot (wall module).

CoolUnoccSpt* Space Temperature Setpoint to be maintained during UNOCC while in

COOL mode operation.

HeatOccSpt* Space Temperature Setpoint to be maintained during OCC time while

in HEAT/REHEAT mode operation.

HeatStbySpt* Space Temperature Setpoint to be maintained during STANDBY while

in HEAT/REHEAT mode operation. This value is also used to provide a lower limit on the user adjustable remote setpoint pot (wall module) minus Deadband (E-Vision Application selection).

HeatUnoccSpt* Space Temperature Setpoint to be maintained during UNOCC while in

HEAT/REHEAT mode operation.

BypassTime Number of minutes to stay in BYPASS mode after the Bypass digital

input is pressed.

(0 to 16,990) m3h

(0 to 16,990) m3h 0 to 10,000 CFM

(0 to 16,990) m3h

(0 to 16,990) m3h 50 to 95°F

(10 to 35°C) 50 to 95°F

(10 to 35°C)

50 to 95°F (10 to 35°C)

0 to 1080 min 180 min

Default

Value

1,000 CFM (1,700) m3h

73.4°F (23°C)

77°F (25°C)

82.4°F (28°C)

70°F (21°C)

66°F (19°C)

61°F (16°C)

(continued)

74-2949–1 68

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Table 11. List Of Setpoint Variables (Continued).

Default User

Address Description Allowable Values

DlcBumpTemp Amount (in degrees) to adjust the Cooling Setpoint upward, or the

FlowTrackOfst Air flow in CFM (m3h) to add to the incoming tracking signals when

CAUTION

*If any value is set out of range >90° or 40°F (>32.2° or <4.4°C), or (CoolOcc < HeatOcc, CoolUnocc < HeatUnocc, CoolStby < HeatStby), the controller sends an alarm and operates at factory default Setpoints 78°F (25.5°C) for Cooling and 65°F (18.5°C) for Heating.

Damper

Positions:

PurgeDmprPos Damper position based on the air flow setpoint during Night Purge

WarmupDmprPos Damper position based on the air flow setpoint during Morning Warm-

PressDmprPos Damper position based on the air flow setpoint during Smoke Control

DepressDmprPos Damper position based on the air flow setpoint during Smoke Control

WinOpnDmpPos Damper position based on the air flow setpoint when a Window is

Gains:

GainCoolProp Throttling Range used during COOL mode operation. 1 to 20 DDF

GainHeatProp Throttling Range used during HEAT mode operation. 2 to 30 DDF

GainCoolInt Integral time used during COOL mode operation. 0 to 5000 sec 4000 sec GainHeatInt Integral time used during HEAT mode operation. 0 to 5000 sec 2400 sec GainCoolDer Derivative time used during COOL mode operation. 0 to 255 sec 0 sec GainHeatDer Derivative time used during HEAT mode operation. 0 to 255 sec 0 sec

Actuator Speeds

or Directions:

DampMtrSpd Series 60 actuator motor speed for box damper. 20 to 600 sec 90 sec ValveMtrSpd Series 60 actuator motor speed for box reheat valve. 20 to 600 sec 90 sec PWMPeriod PWM Period in sec 5 to 600 sec 100 sec PWMZeroScale PWM value of zero percent position in sec 0.1 to 600 sec 1 sec PWMFullScale PWM value of 100 percent position in sec 5 to 600 sec 99 sec

Heating Setpoint downward, when a high electrical demand condition exists.

controller was configured for Exhaust Flow Tracking operation.

operation (Pressure Independent). Physical damper position goes to a position as commanded during

Night Purge operation (Pressure Dependent).

Up operation (Pressure Independent). Physical damper position goes to a position as commanded during

Morning Warm-Up operation (Pressure Dependent).

operation. For pressurization (Pressure Independent). Physical damper position goes to a position as commanded during

Smoke Control operation. For pressurization (Pressure Dependent).

operation. For depressurization (Pressure Independent). Physical damper position goes to a position as commanded during

Smoke Control operation. For depressurization (Pressure Dependent).

Open (Pressure Independent). Physical damper position goes to a position as commanded when a

Window is Open (Pressure Dependent). NOTE: The following control gains should be adjusted only by authorized Honeywell personnel. For most

applications, no adjustment is necessary.

0 to 10°F (0 to 5.5) °C

-2119 to 2119 CFM (-3600 to 3600) m3h

0 to 100 percent of maximum CFM, (m3h) setpoint. 0 to 100 percent of damper position.

(1 to 11)°K

(1.11 to 16.66)°K

Default

Value

3 °F (1.7 °C)

100

3 DDF (1.66)°K

5 DDF (2.77)°K

69 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

NOTE: The W7751H uses a 90 second actuator motor,

so DmprMtrSpd speed is normally configured at the default of 90 seconds.

&RPPLVVLRQLQJ

Commissioning refers to the activities performed to optimize the VAV box operation to meet the job specification requirements and overall fine tuning of the box control. E-Vision is the tool used to perform these activities, as described in Appendix B.

Job Commissioning

The CARE/E-Vision database that is generated for the Excel 10 VAV Controllers and associated Zone Managers contains information concerning interrelationships and network identifications. For this reason, it is mandatory to commission (assign ID and download) all Excel 10 VAV Controllers and the Zone Managers from a database.

This project database can be backed up and restored for placement on various PCs during the commissioning phase (Note: only a single copy can be used at a time) this copy must be re-designated as the next PC for further commissioning.

CAUTION

If more than one copy of the same database is used in multiple PCs to assign IDs and download to Excel 10 VAV Controllers, there is currently no means to recombine the multiple copies into a single database for any project. If multiple copies are used, it is necessary to designate one database as the master and re-commission the controllers that do not indicate being commissioned. If E-Vision displays an assigned ID only the application needs to be downloaded to the controller. If no ID has been assigned, assign ID(s) and download the application to the controller(s). In both of these cases, parameter changes (Setpoints, Temperature Sensor Calibration, etc.) made with the other PC database are lost and have to be re-entered. However flow balancing information will not be lost or overwritten.

master

single

and given to the

,'1XPEHU

Bench Top Configuring

Appendix A presents a simple work bench arrangement of the required hardware and the associated wiring connections to configure Excel 10 W7751D,F Controllers. See the following procedure:

With power disconnected to the housing subbase, insert the controller circuit board (in the housing cover) into the subbase unit.

Apply power to the controller, and insert the Serial Interface cable into the jack on either the Excel 10 W7751D or F Controllers (see Appendix A).

Use the CARE/E-Vision PC tools to configure the controller. (See the CARE, E-Vision User’s Guides, forms 74-5587 and 74-2588, for further details.) Use the ID number sticker on the controller or press the bypass button on the wall module.

When configuration is completed, power down and remove the W7751D,F from the subbase. Mark the controller with the Plant name or location reference so the installer knows where to install each controller in the building.

Repeat with each W7751D,F to be configured.

The data file used for this configuration must be used at the job site so the commissioning data matches the controllers.

Configuring in the Field

If the controllers were installed at the site, use the following procedure to assign the node numbers to the Excel 10 VAV Controller:

Instruct the installer to remove the ID sticker from each controller during installation and to attach it to either the job blueprint at the appropriate location or to a tabulated list. Be sure the installer returns these prints to the application engineer after the controllers are installed.

Connect to the E-Bus with the CARE PC tool.

Configure the W7751 by following the standard CARE procedures (use the job prints as a location reference for the controllers).

Configuring the Zone Manager

The Q7750A Excel 10 Zone Manager sends out a onetime LonWorks® message containing its 48-bit Neuron ID after any power-up Zone Manager is reset by pressing the reset button.

WARMSTART

or when the Excel 10

Each Excel 10 VAV Controller is shipped with an internal Identification Number from the factory. This ID number is on a removable sticker on the inside of the W7751 housing and can be used to assign a CARE Plant to each controller. When assigning the ID numbers, the procedure used depends on if the controllers were installed at the site or if they can be configured one at a time on a bench top.

The ID number can either be manually entered or a node can broadcast its ID number on the E-Bus. The CARE commissioning tool (E-Vision) is used to perform both methods (see E-Vision User’s Guide form, 74-2588, Step

12. Commission Controllers).

74-2949–1 70

IMPORTANT

Pressing the reset button on the Excel 10 Zone Manager causes all application files in the Q7750A, including the C-Bus setup, to be lost.

The LonWorks message is sent out one time and only on the E-Bus, not on the B-Port. The message will be the same as the one generated after pressing the service pin button, available on all Excel 10 VAV Controllers. The CARE commissioning tool (E-Vision) can use this message to assign the node address.

Assign ID

The VAV Controller except, instead of pressing the bypass button, the reset button must be pressed or the power must be cycled (down then up) on the Q7750A Excel 10 Zone Manager.

procedure is the same as for an Excel 10

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

([FHO9$9&RQWUROOHU3RLQW0DSSLQJ

In typical Excel 10 VAV Systems, there are often variables that contain values or information that must be shared with other devices on the E-Bus. This is done through a process called Refer Excel 10 Points in the E-Vision tool. If variables or user addresses have to be used over the C-

Bus or monitored through the Zone Manager, the user must assign them as mapped points through the use of the Care Plants.See Table 12. Mapped points are available to the C-Bus. It may be desirable to map to other locations in a system. Table 12 lists commonly mapped points. See Appendix D for a complete list of all Excel 10 VAV Controller User Addresses.

Table 12. List Of Excel 10 VAV Controller Source Variables:

Excel 10 VAV Controller Points Are Source Points With Receivers Elsewhere On E-Bus Or C-Bus.

Source (Excel 10 VAV

Controller) Variable

Name

SrcOccSensor

(Including Receiver Information) Allowable Values Typical Destination

This signal contains the effective occupancy

Description

status of the Excel 10 VAV Controller.

StatusOvrride This signal contains the state of the remote

override button.

StatusMode Indicates the current Control mode of the Excel

10 VAV Controller.

AlarmLog0 through AlarmLog

Indicates latest 5 alarms detected by the node (if any).

StatusLowFlow Indicates duct pressure is not sufficient to

provide the desired air flow with the damper fully open.

StatusFan If the box has a fan, this indicates its

commanded status (On or Off).

HeatStagesOn If the box has staged reheat, this indicates the

current number of stages commanded On.

SupplyFlow * This indicates the current measured air flow in

m3h or (CFM) being delivered by the box.

DamperPos ** This indicates the current box damper position

(in percent of fully open).

TerminalLoad This indicates the current calculated terminal

cooling load as a percentage of what the box is designed to handle. Positive value indicates a cooling load. Negative value indicates a heating load.

HtgVlv_DmpPos This indicates the current position of the

modulating reheat valve or damper as a percentage of fully open.

RmTempActSpt This indicates the current temperature control

point calculated from the various Setpoints and Operating modes.

SaFlowCntlSpt This indicates the current air flow control point

calculated by the temperature control or exhaust tracking control algorithms.

* Not applicable in Pressure Dependent applications.

** Pressure Dependent applications display inaccurate damper positions.

Occupied

XBS for monitoring. Standby Unoccupied Bypass Null

Occupied Unoccupied

XBS for monitoring and

tenant logging. Bypass Null

15 possible values.

Table D4. Status

See

Points

16 possible values.

Table D4. Status

See

Points

Normal Alarm

XBS for monitoring.

XBS for monitoring, or

VAV AHU controller for

use in the flow control. Fan is off

XBS for monitoring. Fan is on

No Stages Active

XBS for monitoring. Single Stage Active Two Stages Active Three Stages Active

0 to 10,000 CFM (0 to 16,990) m3h

XBS for monitoring, or

VAV AHU controller for

use in the flow control. 0 to 100 percent* XBS for monitoring, or

VAV AHU controller for

use in the flow control.

-160 to 160 percent XBS for monitoring, or

VAV AHU controller for

use in the flow control.

0 to 100 percent XBS for monitoring, or

VAV AHU controller for

use in the flow control. 50 to 95°F (10 to 35°C) XBS for monitoring, or

VAV AHU controller for

use in the flow control. 0 to 10,000 CFM

(0 to 16,990) m3h

XBS for monitoring, or

VAV AHU controller for

use in the flow control.

71 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

6WHS7URXEOHVKRRWLQJ

7URXEOHVKRRWLQJ([FHO&RQWUROOHUVDQG:DOO 0RGXOHV

In addition to the following information, refer to the Installation Instructions and Checkout and Test manual for each product. See the Applicable Literature section for form numbers.

7HPSHUDWXUH6HQVRUDQG6HWSRLQW3RWHQWLRPHWHU 5HVLVWDQFH5DQJHV

The T7770 or T7780 Wall Module or the C7770A Air Temperature Sensor has the following specified calibration points, which are plotted in Fig. 80:

Temperature (°F) Resistance Value (ohms)

The T7770 Wall Module setpoint potentiometers have the following calibration points:

Temperature (°F) Resistance Value (ohms)

98 11755 80 18478 70 24028 60 31525 42 52675

85 1290 70 5500 55 9846

80K

70K

60K

50K

40K

30K

RESISTANCE (OHMS)

20K

10K

40 50 60 70

AIR TEMPERATURE SENSOR 10K OHM SETPOINT POT

RESISTANCE VALUES

TEMPERATURE (DEGREES)

20K OHM AT 77

F (25oC)

100

110

M11620

Fig. 80. Temperature sensor resistance plots.

$ODUPV

When an Excel 10 has an alarm condition, it reports it to the central node on the E-Bus (typically, the Excel 10 Zone Manager). See Table 13. Information contained in an alarm message is:

•

Subnet Number: E-Bus subnet that contains the Excel 10 node that has the alarm condition. Subnet 1 is on the Zone Manager side of the router; Subnet 2 is on the other side.

•

Node Number: Excel 10 node that has the alarm condition (see Network Alarm).

•

Alarm Type: Specific alarm being issued. An Excel 10 can provide the alarm types listed in Table 13.

NOTE: The node can be reset by switching the node to

MANUAL and then to the normal operating mode.

Also, the Excel 10 VAV Controller variables,

where

is 0 through 4, that store the last five alarms to

AlarmLogX

occur in the controller, are available. These points can be viewed through XBS or E-Vision.

Certain alarm conditions are suppressed conditionally as follows:

If an input Excel 10 VAV Controller variable (except RmtFlow1) with failure detect is bound to the same node as the Excel 10 VAV Controller variable Alarm, then the Excel 10 VAV Controller variable Alarm and AlarmLogX do not report the related Excel 10 VAV Controller variable receive failure error and its associated return to normal. Suppression only occurs when the Excel 10 VAV Controller variable Alarm is bound to only one node using LonWorks® subnet node addressing. Suppression occurs only after the input Excel 10 VAV Controller variable has actually received an Excel 10 VAV Controller variable from the node since the latest application restart (or power-up condition). The Excel 10 VAV Controller variable Error contains all the detected current errors even though they can be suppressed for reporting by the Excel 10 VAV Controller variable Alarm and AlarmLogX.

%URDGFDVWLQJWKH6HUYLFH0HVVDJH

The Service Message allows a device on the E-Bus to be positively identified. The Service Message contains the controller ID number and, therefore, can be used to confirm the physical location of a particular Excel 10 VAV Controller in a building. There are two methods of broadcasting the Service Message from an Excel 10 W7751 Controller. One uses a hardware service pin button on the W7751B,D,F,H Controllers (see Fig. 81).

74-2949–1 72

NOTE When pressing the W7751D,F,H service pin

button, use a non-metalic object to press the button through the access holes.

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Table 13. Excel 10 Alarms.

Name of alarm or error bit

NO_ALARM 0 No alarms presently detected. COMM_FAILED 1 One or more NV inputs have failed to receive an update within their specified

SENSOR_FAILED 2 One or more sensors have failed. INVALID_CONFIG 3 The binding of network variables is inconsistent with the configuration. INVALID_SETPOINT 4 One of the Setpoints is not in the valid range. NODE_DISABLED_ALM 5 The control algorithm has stopped because the controller is in

FROST_PROTECT_ALM 6 The space temperature is below the frost alarm limit 42.8°F (6°C) when the

SMOKE_ALARM 7 When the node enters the Pressurize or DePressurize mode, then the node

Comm_Failed_Rtn 129 Return to no alarm after being in an alarm condition. This code is added

Sensot_Failed_Rtn 130 Return to no alarm after being in an alarm condition. This code is added

Invalid_Config_Rtn 131 Return to no alarm after being in an alarm condition. This code is added

Invalid_Setpt_Rtn 132 Return to no alarm after being in an alarm condition. This code is added

Node_Disabled_Rtn 133 Return to no alarm after being in an alarm condition. This code is added

Frost_Protect_Rtn 134 Return to no alarm after being in an alarm condition. This code is added

Smoke_Alarm_Rtn 135 Return to no alarm after being in an alarm condition. This code is added

ALM_NOTIFY_DISABLED 255 The alarm reporting was turned off by DestManMode. No more alarms are

Alarm type

number Meaning of alarm code or error bit

FAILURE_DETECT_TIME.

DISABLED_MODE, MANUAL, or FACTORY_TEST mode. No more alarms are reported when the controller is in the DISABLED_MODE. Alarms continue to be reported if the controller is in the MANUAL, or FACTORY_TEST mode.

mode is FREEZE_PROTECT. The alarm condition remains until the temperature exceeds the alarm limit plus hysteresis.

issues the SmokeAlarm.

numerically to another alarm code to indicate that the alarm condition has returned to normal.

reported via nvoAlarm until DestManMode turns on alarm reporting or on application restart.

The other involves using the PC Configuration tool, as follows:

When an Vision commissioning tool, the node goes into the SERVICE_MESSAGE mode for five minutes. In the SERVICE_MESSAGE mode, pressing the occupancy override button on the remote wall module (refer to Fig. 83 for override button location) causes the Service Message to be broadcast on the network. All other functions are normal in the SERVICE_MESSAGE mode.

Assign ID

command is issued from the CARE/E-

If an Excel 10 VAV Controller does not have an override button connected, it can still broadcast the Service Message on the network by temporarily shorting the controller Bypass Input terminal to the Sensor Ground terminal (on the W7751D,F short terminals 24 to 26, on the W7751B short terminals 20 to 22 and on the W7751H short terminals 7 and 5).

The CARE/E-Vision commissioning tool is used to perform the ID Assignment task (see E-Vision User’s Guide form, 74-2588).

73 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

W7751D,F SERVICE PIN BUTTON ACCESS HOLE

∆P

–

:&RQWUROOHU6WDWXV/('V

W7751B SERVICE PIN BUTTON

M11860

SERVICE PIN BUTTON ACCESS HOLE

60°

45°

CCW

W7751H CIRCUIT BOARD

Fig. 81. Location of the Service Pin Button.

60°

CCW

45°

The LED on the front of a W7751 Controller provides a visual indication of the status of the device. See Fig. 82. When the W7751 receives power, the LED appears in one of the following allowable states:

1. Off—no power to the processor.

2. Continuous on—processor is in initialized state.

3. Slow blink—controlling, normal state.

4. Fast blink—when the Excel 10 VAV Controller has an alarm condition.

74-2949–1 74

W7751B

∆P

–

STATUS LED

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

STATUS LED

W7751F

Fig. 82. LED location on W7751s.

7&RU':DOO0RGXOH2YHUULGH/('

The remote override LED, located on either the T7770C or T7770D Wall Module in Fig. 83, display the Manual Override mode of the controller. The modes are:

1. LED = Off. No override active.

2. LED = Continuously On. Bypass mode (timed Occupied override).

3. LED = One flash per second. Continuous Unoccupied override.

4. LED = Two flashes per second. Remote only, continuous Occupied override.

OVERRIDE LED

T7770C

OVERRIDE LED

BYPASS PUSHBUTTON

T7770D

STATUS LED

60°

CCW

W7751D

45°

60°

CCW

45°

W7751H

STATUS LED IS UNDER THE COVER

M11861

T7770C,D or T7780 DDWM Bypass Pushbutton Operation

The Wall Module Bypass pushbutton is located on both the T7770C,D Wall Modules, see Fig. 83. The bypass pushbutton is also located on the T7780 DDWM, see Fig.

85. The T7770C,D Wall Modules can change the controller into various occupancy modes, see Table 14.

Table 14. Bypass Pushbutton Occupancy Modes

If Pushbutton is

Held Down for at

Least

The But for

Not More

than

Resulting

Mode is

<1 second 1 second No Override

active

1 second 4 seconds Bypass mode

(timed Occupied override)

4 seconds 7 seconds Continuous

Unoccupied override

BYPASS PUSHBUTTON

M11617

Fig. 83. The T7770C,D Wall Modules LED and Bypass

pushbutton locations.

75 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Pressing the wall module bypass pushbutton, located on both the T7770C and T7770D, Wall Modules in Fig. 83, causes the override LED to display the Manual Override mode of the controller, see Fig. 84. The modes are:

1. LED = Off. No override active.

2. LED = Continuously on. Bypass mode (timed Occupied override).

3. LED = One flash per second. Continuous Unoccupied override.

4. LED = Two flashes per second. Remote only, continuous Occupied override.

NOTES: If the pushbutton is held down for longer than

seven seconds, the controller reverts back to mode 1 and repeats the cycle for modes 1 through 3.

PRESS FOR LESS THAN ONE SECOND

BYPASS OCCUPIED

7'':0%\SDVV3XVKEXWWRQ

See Fig. 85 for the T7780 DDWM bypass pushbutton locations (occupied or unoccupied).

RESET

NOT ASSIGNED

(LED OFF)

PRESS FOR ONE TO FOUR SECONDS

(LED ON)

Mode 4 (continuous Occupied override, two flashes per second) can only be initiated remotely; that is, over the E-Bus network. An error condition will be displayed as three short blinks and one long blink when the Bypass pushbutton is held down or shorted. The short must be removed to return the controller to proper operation.

BYPASS TIMEOUT

PRESS FOR LESS THAN ONE SECOND

Fig. 84. LED and Bypass pushbutton operation.

BYPASS PUSHBUTTON

PRESS FOR FOUR TO SEVEN SECONDS

UNOCCUPIED

(LED BLINK)

PRESS FOR MORE THAN SEVEN SECONDS

M8483A

T7780

M11862

Fig. 85. The T7780 DDWM bypass pushbutton location.

74-2949–1 76

W7751B

I/O TEST PIN

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

∆P

–

JUMPER BLOCK (OR USE ALLIGATOR CLIP)

COVER

TEST PADS (PADS ON BOTH SIDES OF CIRCUIT BOARD)

ALLIGATOR CLIP

Fig. 86. I/O test pin/pad uses jumper block or alligator clip to short the test pin/pad.

$33(1',&(6

$SSHQGL[$ &UHDWLQJD:RUN%HQFKIRU&RQILJXULQJ ([FHO:')9$9&RQWUROOHUV

Fig. A-1 illustrates one possible test-bed setup for configuring Excel 10 VAV Controllers offsite. This setup allows W7751D,F Controllers to be plugged in, configured from a PC running either CARE/E-Vision, and removed quickly and easily.

HOT WATER

VALVE

MMC325

bench.

OR STEAM REHEAT COIL

DISCHARGE AIR

PNEUMATIC ACTUATOR

PNEUMATIC TRANSDUCER

T7770

M11869

AIR FLOW SENSOR

PRIMARY AIR

DAMPER ACTUATOR

W7751 CONTROLLER

PNEUMATIC MAIN OR BRANCH LINE MUST BE 1/4 IN. (6 MM) OR LARGER TUBING. A MINIMUM OF 6 FT (1.8M) OF TUBING IS NEEDED IN A BRANCH LINE.

Fig. A-1. Excel 10 VAV Controller configuration work

SUBBASE

M11863

$SSHQGL[%8VLQJ(9LVLRQWR &RPPLVVLRQD:&RQWUROOHU

-RE&RPPLVVLRQLQJ

This project database can be backed up and restored to be placed onto various PCs during the commissioning phase (but only a single copy can be used at a time) and then must be re-designated as the

master

next PC for further commissioning.

,'1XPEHU

12. Commission Controllers).

77 74-2949–1

single

and given to the

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Bench Top Configuring

Appendix A presents a simple work bench arrangement of the required hardware and the associated wiring connections to configure Excel 10 W7751D,F Controllers. Proceed as follows:

With power disconnected to the housing subbase, insert the controller circuit board (contained in the housing cover) into the subbase unit.

Apply power to the controller, and insert the Serial Interface cable into the jack on either the Excel 10 W7751D or F Controllers (see Appendix A).

Repeat with next W7751D,F to be configured.

The data file used for this configuration must be used at the job site so the commissioning data matches the controllers.

Configuring in the Field

If the controllers were installed at the site, the procedure to assign the node numbers to the Excel 10 VAV Controller is as follows:

Instruct the installer to remove the ID sticker from each controller during installation and to affix it to either the job blueprint at the appropriate location or to a tabulated list. Be sure the installer returns these prints to the application engineer after the controllers are installed.

Connect to the E-Bus with the CARE PC tool.

Proceed to configure the W7751 (using the job prints for location reference for the controllers) by following the standard CARE procedures.

Configuring the Zone Manager

The Q7750A Excel 10 Zone Manager sends out a onetime LonWorks® message containing its 48-bit Neuron ID after any power-up Zone Manager is reset by pressing the reset button.

IMPORTANT

Pressing the reset button on the Excel 10 Zone Manager causes all application files in the Q7751, including the C-Bus setup, to be lost.

WARMSTART

or when the Excel 10

6HQVRU&DOLEUDWLRQ

The space temperature and the optional resistive inputs can all be calibrated. The wall module setpoint potentiometer calibration by adding an offset value (either positive or negative) to the sensed value using E-Vision menus (see E-Vision user’s guide, form number 74-2588).

can not

be calibrated.Perform the sensor

$LU)ORZ%DODQFLQJ )RU3UHVVXUH,QGHSHQGHQWDSSOLFDWLRQVRQO\

In addition to the ten point Flow Pickup Calibration Table, the Excel 10 VAV Controller provides for 3-point (Maximum, Minimum, and Zero) Air Flow Calibration. This allows the box to be adjusted so it can be certified that the box provides the flow rates specified by the consulting engineer. When balancing is complete, the actual flow from a box should be within 5 to 10 percent of the indicated air flow (as shown on the E-Vision screen).

NOTE: There are many sources of error in flow-hood

measurements. Flow hood meters typically attain accuracy to within plus or minus three to five percent of full flow. The error can be due to the device being out of calibration, or that it was last calibrated with a different style of diffuser. Even the operator technique plays a role in obtaining repeatable, accurate flow readings. When working with slotted diffusers,

use

a velocity-probe type of instrument.

Follow the diffuser manufacturer’s recommendation for how to best measure the air flow through their products.

do not use

a hood;

3URFHGXUH

CAUTION

Prior to air flow balancing for the first time, perform a zero flow calibration procedure. To do so, power the Excel 10 VAV Controller for one hour or more before performing the procedure.

Select the controller being worked on with E-Vision (see the E-Vision User’s Guide, form 74-2588, for general details on using E-Vision). Due to inconsistencies in VGA display cards and modes, be sure to maximize the EVision window on the screen (by clicking the up-arrow at the top-right corner of the E-Vision window). This assures that all E-Vision activities are user viewable.

The LonWorks message is sent out one time and only on the E-Bus, not on the B-Port. The message will be the same as the one generated after pressing the service pin pushbutton available on Excel 10 VAV Controllers and also via the wall module bypass pushbutton. The CARE commissioning tool (E-Vision) can use this message to assign the node address.

Assign ID

The VAV Controller except, instead of pressing the bypass button, the reset button must be pressed or the power must be cycled (down then up) on the Q7750A Excel 10 Zone Manager.

74-2949–1 78

procedure is the same as for an Excel 10

Refer to the Air Flow Balancing section in the E-Vision user’s Guide form, 74-2588 for the exact procedure.

5HVHWWLQJ$LU)ORZ&DOLEUDWLRQWR)DFWRU\'HIDXOWV

Refer to the Air Flow Balancing section in the E-Vision user’s Guide form, 74-2588 the for exact procedure.

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

9$9,,&DOLEUDWLRQ6HTXHQFH

Dual Duct VAV box that has flow mixing with constant volume using two W7751 Controllers.

Create the Master controller in E-Vision.

a. Add a VAVII controller to the network. Name

the same as the CARE name if using a Zone Manager.

b. Configure the inputs and the outputs through

the Application Selection under the Controller menu.

1.) Configuration Tab: a.) Select the controller type (Standard,

Smart, OEM). b.) Select the Box Type (Dual_Duct). c.) Select the Flow Type

(Master_Const_Flow). d.) Select the Pressure Type

(Press_Independent). e.) Select the Wall Module Type. f.) The Reheat Type will be

DualDuctReheat, the Fan Type will be

NO_Fan and Morning Warm-up Type

2.) Input Tab:

3.) Output Tab:

4.) Cntrl Parameters Tab:

5.) Flow Pickup Table Tab:

c. Click on the OK button to save the changes

and exit out of the Application Selection screen.

Create the Satellite controller in E-Vision.

a. Add a VAVII controller to the network. Name it

the same as the CARE name if using a Zone Manager.

b. Configure the inputs and the outputs through

Application Selection under the Controller menu.

1.) Configuration Tab:

will be Fixed_Flow_Spt. a.) Select the Remote Stpt

(Absolute_Setpoint,

Relative_Setpoint). b.) Select any additional Analog or Digital

inputs. a.) Enter the correct motor speed value

(default is 90 seconds). b.) Verify that the direction to open the

damper is correct (default is CW). a.) Enter the desired Flow Setpoints.

b.) Enter the correct Duct area or select

the duct diameter from the drop-down

list. a.) Select the correct Flow Pickup from

the Sensor Type drop-down list.

a.) Select the controller type (Standard,

Smart, OEM). b.) Select the Box Type (Dual_Duct). c.) Select the Flow Type

(Master_Const_Flow). d.) Select the Pressure Type

(Press_Independent). e.) Select the Wall Module Type. f.) The Reheat Type will be

DualDuctReheat, the Fan Type will be

NO_Fan and Morning Warm-up Type

will be Fixed_Flow_Spt.

2.) Input Tab: a.) There will be no Remote Stpt for the

Satellite controller.

b.) Select any additional Analog or Digital

3.) Output Tab:

4.) Cntrl Parameters Tab:

5.) Flow Pickup Table Tab:

c. Click on the OK button to save the changes

and exit out of the Application Selection screen.

d. Bind the Wall Module from the Master

controller to the Satellite controller and the Satellite box flow to the Master controller.

1.) Select Refer Excel 10 Points (Network

2.) Select the Master controller to be the

3.) Select the Satellite controller to be the

4.) Under Source Excel 10 Points, select

5.) Under Destination Excel 10 Points, select

6.) Click on the Add button to add the binding

7.) Select the Satellite controller to be the

8.) Select the Master controller to be the

9.) Under Source Excel 10 Points, select

10.)Under Destination Excel 10 Points, select

11.)Click on the Add button to add the binding

Commission the Master and the Satellite Controllers.

a. Select both controllers by clicking once on the

Master controller, then hold down the Ctrl key on the keyboard and click on the Satellite

controller. b. Go to the Online mode (View menu item). c. Select Assign Neuron ID (Controller menu

item). Use the wall module Pushbutton on the

Master controller wall module to assign the ID

for the Master or manually enter the ID for both

the Master and the Satellite controllers. The

status for both controllers should be Not

Commissioned. Close out the dialog box.

inputs.

a.) Enter the correct motor speed value

(default is 90 seconds).

b.) Verify that the direction to open the

damper is correct (default is CW).

a.) Enter the desired Flow Setpoints.

They should be the same as the Master controller setpoints.

b.) Enter the correct Duct area or select

the duct diameter from the drop-down list.

c.) There are no Cooling or Heating

Setpoints or Remote Setpoint limits available for the Satellite controller.

a.) Select the correct Flow Pickup from

the Sensor Type drop-down list.

Menu itemOffline). Source Excel 10. Destination Excel 10. SrcMaster. DestSatellite. to the References list box. Source Excel 10. Destination Excel 10. SrcBoxFlow. DestFlowTrack. to the References list box. This will

complete the binding that is required between the Master and the Satellite controllers. Click the Close button to exit the Refer Excel 10 Points dialog box.

79 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

d. Select Commission (Controller menu item).

Both controllers should be listed in the list box and highlighted. Click on the Start button to commission the controllers. Close out the dialog box after both controllers are commissioned.

e. Double click on the Master controller to bring

up the Application Selection screen and select the Flow Pickup Table Tab.

f. Click on the Calculate button (this will create a

new flow table based on the factory calibration values that were uploaded from the controller). A message box will display Flow Table Calculations Finished. Press Set or OK to complete. Click on the OK button to close the message box and then click the OK button to update the controller with the new values.

g. Repeat steps 3e and 3f for the Satellite

controller.

Calibrate Air Flow.

a. To calibrate the Master controllerSelect the

Master controller (Cold Duct Damper).

b. Select Calibration (Controller menu item) and

Air_Flow_Cal from the VAVII Sensor Calibration list box and then click on the Select button.

c. Select the Reset button to load the factory

defaults (this is done so the controller has good starting values for the zero, minimum, and maximum calibration.

d. Select the Zero button to do the Zero

Calibration (this process will take a couple of minutes to complete). When calibration is complete, close the Air Flow Zero Calibration dialog box.

e. Select the Maximum button to do the

maximum calibration. When Maximum Calibration Status displays Setpoint reached, enter measured flow, then enter the measured value and click on the Calibrate button. When calibration is complete, close the Air Flow Maximum Calibration dialog box.

f. Select the Minimum button to do the minimum

calibration. When Minimum Calibration Status displays Setpoint reached, enter measured flow, then enter the measured value and click on the Calibrate button. When calibration is complete, close the Air Flow Minimum Calibration dialog box.

g. Close the Air Flow Calibration and the VAVII

Sensor Calibration dialog boxes.

h. Select the Satellite controller (Hot Duct

Damper).

i. To balance the Hot Duct Damper, the Cold

Duct Damper has to be closed. This example will use the Hand Held Tool (HHT) to command the Cold Duct Damper closed. The following steps will guide the user to manually command the damper closed.

1.) Plug the HHT into the Master controllers wall module or the Master controller and turn on the power switch. The HHT software version number will be displayed (it should be 01.01.02 or greater).

2.) Press Enter to get to the main menu. Scroll down to HHT Functions and hit the Enter key.

3.) Scroll down to Change Authorization and hit the Enter key.

74-2949–1 80

4.) Scroll down to Operator Level and hit the Enter key. For new level, enter level 4.

5.) Enter the Password for that level and hit the Enter key. Hit the Prev Menu button a number of times to get back to the VAV2 Main Menu.

6.) Pick the Select Excel 10 menu item and hit the Enter key. Scroll down to Push Button ID and hit the Enter key.

7.) The HHT will prompt the user to press the pushbutton on the Master controllers wall module. The next screen will display Excel 10 Selected and also display the Nodes ID number.

8.) Press any key to go to the VAV2 Main Menu. Scroll down to Service Excel 10 and press the Enter key.

9.) Scroll down to I/O Points and press the Enter key.

10.)Scroll down to Commandable Points and press the Enter key.

11.)Scroll down to Manual Damper/Flow and press the Enter key.

12.)Use the Left or Right arrows to select Position on the bottom line (default is Null). For New Position enter a value of 0 and press the Enter key. The Cold Duct Damper will be driven closed. The display will show the current position of the damper. The ReFresh key will have to be pressed to update the current position. When the damper position displays 0, the user can go to step 4j to calibrate the Satellite controller (Hot Duct Damper).

j. To calibrate the Satellite controller,

repeat steps 4b through 4g.

k. Press the Prev Menu key on the HHT.

The HHT will display Manual Damper Leave Fixed?. Select No and press the Enter key to put the damper back under automatic control.

l. Press the Prev Menu key a number of

times to get back to the VAV2 Main Menu and select the Logout VAV2

Verify Calibration.

a. Select the Master controller (Online Mode). b. Select the Monitor mode (Controller menu

item).

c. Verify the Cold/Hot Duct Flow values and if the

VAV box is reaching setpoints.

menu item and press the Enter key.

$SSHQGL[& 6HTXHQFHVRI2SHUDWLRQ

This Appendix provides the control sequences of operation that are pressure independent or pressure dependent. In pressure dependent applications, the reheat setpoint will default from CFM (m3h) to a fixed percent open position for the damper.

NOTE: Pressure dependent applications require physical

minimum and maximum position stops on the damper actuator.

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

&RPPRQ2SHUDWLRQV

The Excel 10 VAV temperature control applications have common configuration options. However, Exhaust Flow Tracking, does not perform temperature control at all, and is strictly a flow control algorithm; therefore, it does not share the common operations. This section describes the common operations.

Each application can have any or all of these devices configured with the restriction that Controller that controls temperature temperature sensor (either wired directly to the controller or shared from another Excel 10 VAV Controller).

Room Temperature Sensor (RmTemp)

This is the room space temperature sensor. This sensor is the T7770 Wall Module or the T7780 DDWM. When it is configured, it provides the temperature input for the W7751 temperature control loop. If it is not configured, it is required that a room temperature sensor value be transmitted from another E-Bus device like the T7780 DDWM. If no valid room temperature value is available to the W7751 Controller, the temperature control algorithm in the controller is disabled, causing the heating and cooling control outputs to be turned off.

It can be required that either Wall Module or Room Temperature sharing be provided from another Excel 10 VAV Controller with a wall module or temperature sensor. The room temperature sensor can be calibrated via E-Vision (see Temperature Sensor Calibration in Appendix B).

Remote Setpoint (RmtStptPot or DischargeAir_Sensor)

NOTE: The C7770A Air Temperature Sensor

(DischargeAir_Sensor or Supply_Air_Sensor) or the setpoint pot options are selectable in EVision. (Either one or the other can be selected, but not both on the W7751H controller.)

This is the Setpoint Potentiometer contained in the T7770 Wall Module. (The T7780 DDWM must be in Setpoint to change a controllers setpoint via the E-Bus. Press the up or down arrow keys once or press the enter key twice to get the T7780 DDWM in Setpoint.) When configured, this occupant value is set to calculate the actual cooling or heating Occupied Setpoint. There are two options for how to calculate the actual setpoint to be used by the temperature control algorithm: (Offset) and (Absolute Middle). When SetPtKnob is set to Offset, the Wall Module setpoint knob represents a number from -5° to +5°C (-9° to +9°F) which is added to the software occupied setpoints for the heat and the cool modes (CoolOccSpt and HeatOccSpt). When SetPtKnob is set to Absolute Middle, the setpoint knob becomes the center of the Zero Energy Band (ZEB) between the cooling and heating occupied setpoints. The size of the ZEB is found by taking the difference between the software heating and cooling occupied setpoints; therefore, for Absolute Middle, the actual setpoints are found as follows:

RmTempActSpt (in cooling mode) = RmtStptPot +

(CoolOccSpt - HeatOccSpt) / 2

RmTempActSpt (in reheat mode) = RmtStptPot -

(CoolOccSpt - HeatOccSpt) / 2

every

Excel 10 VAV

must

have a

During Standby and Unoccupied times, the remote setpoint pot is not referenced, and the software setpoints for those modes are used instead.

The C7770A Air Temperature Sensor is a direct-wired temperature sensor that is used to sense discharge, supply or return air in a duct that can be controlled by an Excel 10 W7751 VAV Controller. When configured, this provides the temperature input for the VAV controller setpoint inputs.

Setpoint Limits (StptLoLim and StptHiLim)

Remote setpoint pot limits are provided by StptLoLim and StptHiLim. The occupied setpoints used in the control algorithms are limited by these parameters. When the setpoint knob is configured to be of type Absolute Middle, the lowest actual setpoint allowed is equal to StptLoLim, and the highest actual setpoint allowed is equal to StptHiLim. When the setpoint knob is configured to be an Offset type, the lowest actual setpoint allowed is equal to HeatOccSpt - StptLoLim, and the highest allowed is equal to CoolOccSpt + StptHiLim.

Bypass Mode (StatusOvrride and StatusLed)

During Unoccupied periods, the facility occupant can request that Occupied temperature control setpoints be observed by depressing the Bypass pushbutton on the wall module. When activated, the controller remains in Bypass mode until:

Bypass Duration Setting has timed out (BypassTime), or

User again presses the Wall Module pushbutton to switch off Bypass mode, or

Occupancy schedule (DestSchedOcc network input) switches the mode to Occupied.

User sets the DestManualOcc network point to Not Assigned.

The LED on the Wall Module (StatusLed) indicates the current bypass mode status (see the T7770C,D Wall Module Override LED section).

BypassTime

BypassTime is the time between the pressing of the override button at the wall module (or initiating OC_BYPASS via DestManualOcc) and the return to the original occupancy state. When the bypass state has been activated, the bypass timer is set to BypassTime (default of 180 minutes).

See Table 14 and Fig. 84 and DestBypass in Table D3.

OverrideType

OverrideType specifies the behavior of the override button on the wall module. There are three possible states that have the following meanings: NONE-Disables the override button. NORMAL-Causes the override button to set the Override state to OC_BYPASS for BypassTime (default 180 minutes), when the override button has been pressed for approximately 1 to 4 seconds, or to set the override state to UNOCC when the button has been pressed for approximately 4 to 7 seconds. When the button is pressed longer than approximately 7 seconds, then the override state is set to OC_NUL (no manual override is active).

81 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

BYPASS_ONLY causes the override button to set the override state to OC_BYPASS for BypassTime (default 180 minutes), on the first press (1 to 7 seconds). On the next press, the override state is set to OC_NUL (no manual over ride is active).

OverridePriority

OverridePriority configures the override arbitration between DestManualOcc, DestBypassState, and the wall module override button. There are two possible states which have the following meanings:

LAST-Specifies that the last command received from

either the wall module or DestManualOcc determines the effective override state.

NET-Specifies that when DestManualOcc is not

OC_NUL, then the effective occupancy is DestManualOcc regardless of the wall module override state.

Standby Mode

The digital input for an occupancy sensor (usually a motion detector, or can be a time clock) provides the controller with a means to enter an energy-saving Standby mode whenever there are no people in the room. Standby mode occurs when the scheduled occupancy is Occupied, and the occupancy sensor detects no people currently in the room (digital input contacts Closed means people are in the room, and contacts Open means the room is Unoccupied). When in Standby mode, the Excel 10 VAV Controller uses the Standby Cooling (or Heating) Setpoint (CoolStbySpt or HeatStbySpt) for the Actual Space Temperature Setpoint.

Share Wall Module

If one or more terminal units serve a common area, and it is specified (or desired) to use a single temperature sensor for these boxes, the Share Wall Module option can be configured. Refer to the Cautions and Notes in the Wall Module Options section, Common Temperature Control (Shared Wall Module subsection).

The operation of the temperature control and modes of the controller with the temperature sensor module. For example, this includes Temperature Setpoints and Occupied/Unoccupied/ Standby/Bypass, modes. Each flow loop control with its own Maximum, Minimum and Reheat Flow Setpoints, but is directed by the primary controller. For example, if the primary control is at 50 percent of flow; that is, 500 CFM (849 m3h) for MAX/MIN values of 1000/0 CFM (1700/0 m3h), then the also at 50 percent of its own Flow Setpoints, such as 400 CFM (680 m3h) for MAX/MIN values of 800/0 CFM (1360/0 m3h). Similarly, the primary unit directs the percent open or number of heating stages on for the

Night Purge

If a terminal unit is put into the Night Purge mode via program (or manual) control, CmdMode set to (Night Purge), the controller performs the following functions (It):

• Disables the temperature control loop.

• Disables the flow control loop.

• Controls a damper to a configured percentage of maximum CFM (m3h) air flow (PurgeDmprPos).

• Enables terminal fan.

satellite

controllers follows the

satellite

controller performs

satellite

units.

Window Sensor

The digital input for a window contact provides the algorithm with a means to disable its temperature control activities if someone has opened a window or door in the room. When a window is detected to be Open (digital input contacts Open equals window open), the box damper is commanded to control a damper to a configured percentage of maximum CFM (m3h) air flow for the ZeroDmprPos setting. Normal temperature control resumes when the window closes.

CAV Control

On the occasion where it is required to supply Constant Air Volume (CAV) to the space, applications 1 through 15, can be used by assigning Maximum and Minimum and Reheat Air Flow Setpoints to the same value.

Continuous Unoccupied Mode

This mode is entered when a wall module is configured with a bypass button that was pressed for four to seven seconds, causing the wall module LED to blink. This mode can also be entered via a network command (ManualOcc set to Unoccupied). If the controller is in this mode, it reverts to the Unoccupied Setpoints and control. The controller remains in this mode indefinitely or until the bypass button is pressed to exit the mode or a network command is sent to clear the mode.

Morning Warm-Up

A Morning Warm-Up cycle commands the Excel 10 VAV Controller to open its VAV box to a preselected position to allow the conditioned space to warm up. (On boxes with reheat, the reheat is locked out during the Warm-Up mode.) When Morning Warm-Up is completed, Excel 10 VAV Controllers are commanded to the Occupied condition.

If a unit is put into Morning Warm-Up mode via program (or manual) control, CmdMode set to (Morning Warm-Up), then the controller disables its temperature and flow loops and performs the following functions (It):

• Controls a damper to a configured percentage of maximum CFM (m3h) air flow (MornWarmupPos).

• Enables terminal fan.

• Disables local heat (staged or modulating).

Smoke Control

The Excel 10 VAV Controller supports two smoke-related modes, Pressurize, and Depressurize. When the controller is placed in one of these two modes via a network command, the box damper is commanded to a fixed position specified in a separate user-adjustable Setpoint for each mode, and the temperature control function is disabled.

74-2949–1 82

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Demand Limit Control

When a high-electrical-demand signal is received via the E-Bus network, the controller applies a DlcBumpTemp Setpoint to the current PID error value. This has the effect of bumping the temperature control point to save energy. This offset bumps the cooling control point upward, and bumps the heating control point downward.

Start-Up

Upon initial start-up or on a restart after power failure, the Excel 10 VAV Controller neuron ID number is used as a random number that assigns the controller to one of two groups, even or odd. Based on this determination, one group of controllers drives its actuators open and the other group drives its actuators closed. Only on initial power-up can a controller drive its actuators to go open. Controllers in these groups go through a controlled restart with different time delays to assure smooth air handling unit start-up, minimizing air distribution problems.

NOTE: After a controller download via E-Vision, the

delayed reset time is bypassed and the controller starts after a 40-second initialization.

Air Flow Control Sequences of Operation

The primary function of the temperature-control applications is to regulate the quantity in Meters Cubed per Hour or CFM, of supply air delivered to the space to control the space temperature. The algorithm assumes there is cold air in the duct; therefore, as the box damper is opened wider, the space becomes cooler.

'XDO'XFW3UHVVXUH,QGHSHQGHQWZLWKIORZ PL[LQJZLWKFROGDQGKRWGXFWIORZSLFNXSVXVHV DVDWHOOLWH([FHOIRUKRWGXFW

Dual Duct Flow Mixing: (For setup and Calibration refer to the Dual Duct Calibration procedure in Appendix B)

Master flow configuration:

Master_Flow_Mix

Master reheat configuration:

DualDuctReheat

Satellite flow configuration:

Satel_Flow_Mix

Satellite reheat configuration:

DualDuctReheat NOTE: SrcMaster from the Master Excel 10 must be

bound to DestSatellite of the Satellite Excel 10 and SrcBoxFlow of the Satellite Excel 10 must be bound to DestFlowTrack of the Master Excel 10 through E-Vision (Refer Excel 10 Points) in order for this application to function properly.

HOT DUCT SUPPLY AIR

COLD DUCT SUPPLY AIR

FLOW SENSOR

W7751 CONTROLLER MASTER

M11837

W7751 CONTROLLER SATELLITE

DISCHARGE AIR

SPACE AIR TEMP

Fig. C-1. Dual Duct, Pressure Independent, with flow

mixing, with cold and hot duct flow pickups (uses a

satellite Excel 10 for hot duct).

T7770

83 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

'XDO'XFW3UHVVXUH,QGHSHQGHQWZLWKRXWIORZ PL[LQJZLWKFROGDQGKRWGXFWIORZSLFNXSVXVHV DVDWHOOLWH([FHOIRUKRWGXFW

HOT DUCT SUPPLY AIR

COLD DUCT SUPPLY AIR

FLOW SENSOR

W7751 CONTROLLER MASTER

M11837

W7751 CONTROLLER SATELLITE

DISCHARGE AIR

T7770

SPACE AIR TEMP

setting the cold duct flow to zero then modulating the hot duct flow from min flow to max flow; During the heating and cooling only one damper is being used at any one time to provide heating or cooling, this provides no flow mixing.

'XDO'XFW3UHVVXUH,QGHSHQGHQWFRROLQJ 3UHVVXUH'HSHQGHQWKHDWLQJZLWKIORZPL[LQJ ZLWKFROGGXFWIORZSLFNXS

HOT DUCT SUPPLY AIR

COLD DUCT SUPPLY AIR

FLOAT REHEAT

FLOW SENSOR

FLOAT DAMPER

DISCHARGE AIR

T7770

SPACE AIR TEMP

Fig. C-2. Dual Duct, Pressure Independent, without

flow mixing, that has cold and hot duct flow pickups

(uses a satellite Excel 10 for hot duct).

Dual Duct No Flow Mixing: (For setup and Calibration refer to the Dual Duct Calibration procedure in Appendix B)

Master flow configuration:

Master_No_Flow_Mix

Master reheat configuration:

DualDuctReheat

Satellite flow configuration:

Satel_No_Flow_Mix

Satellite reheat configuration:

DualDuctReheat NOTE: SrcMaster from the Master Excel 10 must be

W7751 CONTROLLER

M11840

Fig. C-3. Dual Duct, Pressure Independent cooling,

Pressure Dependent heating with flow mixing, with

cold duct flow pickup.

Dual Duct Press Flow Mix (pressure dependent cooling and heating using one Excel 10).

Flow configuration:

DD_CDFlowSensor

Reheat configuration:

Float_Reheat Dual duct flow mixing uses one control device to provide

pressure independent control of the cold duct. The Floating Reheat, which is traditionally wired to a heating valve actuator, is wired to a hot duct damper instead. PeriphPos is used to set the minimum hot duct damper position, which applies during both reheat and cooling modes. Flow mixing is achieved by mixing hot duct and cold duct air, which takes place during the cooling mode when minimum hot duct position is not zero (PeriphPos), or during the reheat mode if the cold duct Reheat Flow value is not zero.

Dual Duct Press Flow Mix: (Alternate Configuration)

Flow configuration:

DD_CDFlowSensor

74-2949–1 84

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Reheat configuration:

FloatHotDuctPrDep This configuration is the same as the previous description,

'XDO'XFW3UHVVXUH,QGHSHQGHQWFRROLQJDQG KHDWLQJFRQVWDQWYROXPHZLWKKRWDQGFROGGXFW IORZSLFNXSV

HOT DUCT SUPPLY AIR

COLD DUCT SUPPLY AIR

FLOW SENSOR

DISCHARGE AIR

T7770

SPACE AIR TEMP

Dual duct flow mixing uses two control devices, a master (for the cold duct) and a satellite (for the hot duct) to provide pressure independent control. The dual duct constant volume application tries to control the space to the cooling setpoint only. During unoccupied, the controller will try to control the temperature to either the unocc heating (if the space temperature is less than the unocc heating setpoint) or unocc cooling setpoint (if the space temperature is greater than the unocc cooling setpoint). The controller is always in cooling mode, adjusting the cool air from min flow to max flow while simultaneously adjusting the warm air from max flow to min flow.

'XDO'XFW3UHVVXUH'HSHQGHQWFRROLQJDQG KHDWLQJZLWK)ORZPL[LQJDQGQRIORZSLFNXSV

HOT DUCT SUPPLY AIR

COLD DUCT SUPPLY AIR

FLOAT REHEAT

FLOAT DAMPER

DISCHARGE AIR

T7770

SPACE AIR TEMP

W7751 CONTROLLER MASTER

M11837

W7751 CONTROLLER SATELLITE

Fig. C-4. Dual Duct, Pressure Independent cooling and

heating, constant volume with hot and cold duct flow

pickups.

Dual Duct Constant Volume: Master flow configuration:

Master_Const_Flow

Master reheat configuration:

DualDuctReheat

Satellite flow configuration:

Satel_Const_Flow

Satellite reheat configuration:

DualDuctReheat NOTE: SrcMaster from the Master Excel 10 must be

W7751 CONTROLLER

M11844

NO FLOW PICKUPS

Fig. C-5. Dual Duct, Pressure Dependent cooling and

heating, with Flow mixing and no flow pickups.

Dual Duct Press Flow Mix (pressure dependent cooling and heating using one Excel 10).

Flow configuration:

DD_NoFlowSensor

Reheat configuration:

Float_Reheat Dual duct flow mixing uses one control devices, to provide

pressure dependent control of the cold and hot ducts. The Floating Reheat, which is traditionally wired to a heating valve actuator, is wired to a hot duct damper instead. PeriphPos is used to set the minimum hot duct damper position, which applies during both reheat and cooling modes. Flow mixing is achieved by mixing hot duct and cold duct air, which takes place during the cooling mode when minimum hot duct position is not zero, or during the reheat mode if the cold duct Reheat Flow value is not zero.

85 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Dual Duct Press Flow Mix:

(Alternate Configuration)

Flow configuration:

DD_NoFlowSensor

Reheat configuration:

FloatHotDuctPrDep This configuration is the same as the previous description,

'XDO'XFW3UHVVXUH,QGHSHQGHQWFRROLQJDQG 3UHVVXUH'HSHQGHQWKHDWLQJZLWK&RQVWDQW 9ROXPHDQG'LVFKDUJH$LU)ORZSLFNXS

HOT DUCT SUPPLY AIR

COLD DUCT SUPPLY AIR

FLOAT REHEAT

FLOAT DAMPER

FLOW SENSOR

DISCHARGE AIR

T7770

SPACE AIR TEMP

Dual Duct Discharge Sensor Constant Volume (pressure dependent cooling and heating using one Excel 10).

Flow configuration:

DD_DAFlowSenConst

Reheat configuration:

Float_Reheat Dual duct flow mixing uses one control device, to provide

pressure independent control of the cold duct and total discharge air. In this control sequence, the temperature sensor controls the Hot duct damper position from the PeriphPos minimum hot duct position to 100 percent position. The discharge flow sensor, which picks up the cumulative flow of both the cold and hot duct air flows, is used to determine the total flow of air. This total flow of air is used to control the cold duct damper, using whatever amount of cold air is necessary to maintain a single flow value of MaxFlow. (Be aware that setting the Max flow too high with a small heating flow capacity will not let the cold damper go to zero during a high demand for heat).

$SSHQGL['&RPSOHWH/LVWRI([FHO 9$9,,&RQWUROOHU8VHU$GGUHVVHV

D1. Input/Output Points. D2. Control Parameters. D3. Energy Management Points. D4. Status Points. D5. Calibration Points. D6. Configuration Parameters. D7. LonMark Points. D8. Direct Access and Special Points. D9. Data Share Points.

W7751 CONTROLLER

M11847

Fig. C-6. Dual Duct, Pressure Independent cooling and

Pressure Dependent heating, with Constant Volume

and Discharge Air Flow pickup.

74-2949–1 86

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Table D-1. Analog Points For Engineering Unit Selection.

English Units (Inch-Pound) Standard International Units (SI)

Abbreviations

Measured Item —

Temperature Degrees Fahrenheit F Degrees Celsius C Relative Temperature Delta Degrees Fahrenheit DDF Degrees Kelvin K Air Flow Cubic Feet per Minute CFM Meters Cubed per Hour m3h Air Flow Velocity Feet per Minute FPM Meters per Second m/s Area Square Feet Ft2 Square Meters m2 Length Inches in. Meters m Differential Pressure Inches of Water Column Inw kiloPascal kPa

NOTE: E-Vision - These points are displayed to the user and polled during the E-Vision monitor function. Monitor (M) indicates the

point appears in the Software list box. Schematic (S) indicates the point is to be displayed on the schematic air handler diagram directly. Calibrate (C) - These points are calibratible and the calibration dialog (either the temperature or air flow dialog) is displayed. These points are displayed in a listbox by selection of the menu item Controller, Calibration. When the user double clicks on these points the calibration dialog is displayed. Parameter (P) - This information is displayed to the user in the Application Selection screens. These fields are read/write when offline and read only when online.

HW cfg - This information is displayed to the user in the Application Selection screens. These fields are read/write when offline

or online.

Manual - These points can be placed in the manual mode. When the user double clicks on these points the manual dialog is

displayed, this contains radio buttons; one for Auto and one for Manual.

Test (Test Mode) - These points are commandable when the controller is placed in the test mode via the menu item Controller,

Diagnostics, Test Mode. When the user enters this mode, a list box will display the points that can be commanded in this mode.

(used in CARE

and E-Vision) —

Abbreviations

(used in CARE

and E-Vision)

87 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Table D1. Input/Output Points (Left).

Digita l State

Engineering Units: English (Metric) or

User Address NvName Fiel d Name States plus Range State Default

RawTempSen1 nvoIO siTempSensorS7(0) degrees F

-9 to 122 degrees C (-22.8 to 50)

RawTempSen2 nvoIO siTempSensorS7(1) degrees F

-9 to 122 degrees C (-22.8 to 50)

RawSpaceTemp nvoIO siSpaceTempS7 degrees F

40 to 100 degrees C (4.4 to 37.8)

RawFlowVolts nvoIO siFlowVoltsS12 Volts

0 to 6.5

Value

SI_INVALID

FlowUncorrected nvoIO siFlowUncorrectedS3 -300 to 3500 FPM

(-1.5 to 17.5) m/s

FlowSensor nvoIO siFlowSensorS3 0 to 3500 FPM

(0 to 17.5) m/s

(continued)

74-2949–1 88

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Table D1. Input/Output Points (Right).

Share (SH), Map (MA), Direct Access (DA)

E-Vision (EV): Cal ibrate (C), Monitor (M ),

Parameter (P), Schematic (S )

Hardware Configuration (HW),

Manual Point (MN), Test (TS)

EV SH MA DA HW MN TS Comments

M X X RawTempSen1 reports the current sens or readi ngs configured by TempInput1Type

X RawTempSen2 reports the current sens or readi ngs configured by TempInput1Type

X RawSpaceTemp is the meas ured space temperature. If t he sensor is not

X RawFlowVolts is the on board flow sensor velocity measured by the A/D after pre-

X FlowUncorrected is the air flow velocity measured by the on board flow sensor aft er

X X FlowSensor is t he ai r f l ow veloc i t y measured by the on-board flow sensor after zero

and TempInput2Type. NOTE: The reported temperature does not include the offset c orrection added during sensor calibration, TempInput1Cal or TempInput2Cal .

configured or has failed, the val ue i s SI_INVALID. NOTE: The reported temperatures does not includes the offset correction SpaceTempCal.

amplification and s caling. If a flow sensor error has been detected, RawFlowVolts is set to SI_INVALID.

zero correction and linearization. If a FlowError has been detected or ConfigPressDep (Press_Dependent i n E -Vision) = TRUE, then FlowUncorrected is set to SI_INVALID.

calibration, linearization, and field corrections. If there is an error, then FlowSensor is set to SI_INVALID.

(continued)

89 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Table D1. Input/Output Points (Left Continued).

Digital

State

Engineering Units:

User Address NvName Fiel d Name States plus Range State Default

DigOutputByte nvoIO ubOut

Byte Offset = 12 Bit Offset = 0 (DigitalOut1-8)

DigInputByte nvoIO ubDigitalIn

Byte Offset = 13 Bit Offset = 7 (DigitalIn1-4)

OccupancySnsr nvoIO OccupancySensor FALSE

English (Metric) or

FALSE TRUE

TRUE

Value

0 1

FALSE

WindowSensr nvoIO WindowOpen FALSE

TRUE

HeatCoolCOSw nvoIO HeatCoolSwitch FALSE

TRUE

FreeDigInput nvoIO MonSwitch FALSE

TRUE

IOTestSwitch nvoIO IOTestSwitch FALSE

TRUE

OverrideInput nvoIO OverRide FALSE

TRUE

Model nvoIO Model UNKNOWN_MODEL

SMALL_MODEL MED_MODEL LARGE_MODEL

RawData0 nvoIO raw_data(0) 0 to 65535 0

RawData1 nvoIO raw_data(1) 0 to 65535 0

0 1

0 1 2 3

FALSE

UNKNOWN_MODEL

74-2949–1 90

(continued)

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Table D1. Input/Output Points (Right Continued).

Share (SH), Map (MA), Direct Access (DA)

E-Vision (EV): Cal ibrate (C), Monitor (M ),

Parameter (P), Schematic (S )

Hardware Configuration (HW),

Manual Point (MN), Test (TS)

EV SH MA DA HW MN TS Comments

DigOutputByte - Bit Off set = 0 (DigitalOut1) DigOutputB yt e i s a byte with a bit representing the state of every physical digital output 0 (FALSE). (DigitalOut1 through DigitalOut 8).

DigInputByte Bit Off set = 7 (DigitalIn1): DigInput Byte is a byte with a bit for every physical digital input. If the input is shorted t o ground, the bit is a 0 or FALSE. If the input is open, the bit is 1 or TRUE. (DigitalIn1 through Digital In4).

On is a 1 (TRUE) and off is a

M X X OccupancySnsr is the state of the digital input configured and wired to the local

X WindowSensr is t he s tate of the digital input c onfigured and wired to a window open

X HeatCoolCOSw is the state of t he di gi tal input configured and wired to a Heat/Cool

X FreeDigInput is the state of the digital input conf i gured and wired to a general

X OverrideInput indicates t he s tatus of the wall module override pus hbutton. It is 1

C Model: The hardware configuration is encoded as a res i stor value connected to an

M S

occupancy sensor. 1 m eans that occupancy is being sensed (input circuit s hort ed) and 0 means that no occupanc y i s being sensed (input circuit open).

sensor switch. A 1 (input open circuit) means that the window is open, and 0 (input shorted) means that t he window is cl osed

change over switch. The state of Heat Cool COSw is shown below: FALSE (open): select Cool Mode TRUE (closed): select Heat Mode

purpose monitor switch open) means that the switc h i s open.

IOTestSwitch is the state of the digital input configured and wired to a IO test input. The state of IOTestS witc h i s shown below: FALSE (open): Normal operation TRUE (closed): If Model is Large, perform stand-alone IO t est.

(TRUE) if the button is pres s ed, and is 0 (FALSE) if it i s not pressed.

analog resistive input. Model reports the detected hardware configuration. (SMALL_MODEL is the W7751H SmartVAV Actuator. LARGE_MODEL is the W7751D,F VAV Controllers and the W7751B OEM VAV Controller.)

RawData0 represents the A/D counts from the analog inputs. The c ounts represent the measured time duri ng the second part of each A/D c onversion cycle and can be used during testing of the A / D.

RawData1 represents the A/D counts from the analog inputs. The c ounts represent the measured time duri ng the second part of each A/D c onversion cycle and can be used during testing of the A / D.

1 (input shorted) means that switch is closed, and 0 (i nput

(continued)

91 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Table D1. Input/Output Points (Left Continued).

Digital

State

Engineering Units:

English (Metric) or

User Address NvName Field Name States plus Range State Default

RawData2 nvoIO raw_data(2) 0 to 65535 0

RawData3 nvoIO raw_data(3) 0 to 65535 0

RawData4 nvoIO raw_data(4) 0 to 65535 0

RawData5 nvoIO raw_data(5) 0 to 65535 0

RawData6 nvoIO raw_data(6) 0 to 65535 0

RawData7 nvoIO raw_data(7) 0 to 65535 0

Value

(continued)

74-2949–1 92

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Table D1. Input/Output Points (Right Continued).

Share (SH), Map (MA), Direct Access (DA)

E-Vision (EV): Cal ibrate (C), Monitor (M ),

Parameter (P), Schematic (S )

Hardware Configuration (HW),

Manual Point (MN), Test (TS)

EV SH MA DA HW MN TS Comments

RawData2 represents the A/D counts from the analog inputs. The c ounts represent the measured time during the second part of each A/D conversion cycle and can be used during testing of t he A /D.

RawData3 represents the A/D counts from the analog inputs. The c ounts represent the measured time during the second part of each A/D conversion cycle and can be used during testing of t he A /D.

RawData4 represents the A/D counts from the analog inputs. The c ounts represent the measured time during the second part of each A/D conversion cycle and can be used during testing of t he A /D.

RawData5 represents the A/D counts from the analog inputs. The c ounts represent the measured time during the second part of each A/D conversion cycle and can be used during testing of t he A /D.

RawData6 represents the A/D counts from the analog inputs. The c ounts represent the measured time during the second part of each A/D conversion cycle and can be used during testing of t he A /D.

RawData7 represents the A/D counts from the analog inputs. The c ounts represent the measured time during the second part of each A/D conversion cycle and can be used during testing of t he A /D.

(continued)

93 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Table D2. Control Parameters (Left).

Digital

State

Engineering Units:

English (Metric) or

User Address NvName Fiel d Name States plus Range State Default

nviInUse 0 to 65534 0

Value

DestFlowOffset nviFlowOff set -2119 to 2119 CFM

(-3600 to 3600) m3h

BypassTime nciAux1SetPt ubBypassTime minutes

0 to 1080

StptLoLim nciAux1SetPt siLowStPtS7 degrees F

-9 to 90 degrees C (-22.8 to 32.2)

StptHiLim nciAux1SetPt siHighStPtS7 degrees F

-9 to 90 degrees C (-22.8 to 32.2)

180

(continued)

74-2949–1 94

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Table D2. Control Parameters (Right).

Share (SH), Map (MA), Direct Access (DA)

E-Vision (EV): Cal ibrate (C), Monitor (M ),

Parameter (P), Schematic (S )

Hardware Configuration (HW),

Manual Point (MN), Test (TS)

EV SH MA DA HW MN TS Comments

nviInUse: This is used by a management node to indicate to any other management node that it is logged on to the E xcel 10 node and that they should not try to int eract with any of the Excel 10s network variables. B efore the management node reads or writes any network variables, the management node checks nviInUse for a zero value meaning no other management nodes are already logged on and that a management node can log on to the node. Then the management node writes a number, 1 through 65534, to nviInUse and periodically writes the same value to indicate that the management node is still logged on. If there are no writes made to nviInUse for approximately 60 seconds, then the Excel 10 resets nviInUse to zero t o automatically log off the management node. Before interacting with any net work variabl es, the management node verifies that the nviInUse has not changed. The management node logs off by writing 0 to nviInUse. During power up, an application restart, or return to on-line from off-li ne, the Excel 10 sets nviInUse to 65535 to i ndi cate to the management node that it has returned to online.

M X X X X DestFlowOffset is us ed by a bui l di ng management node to alter the S aFl owCntlSpt for

M P

improved air quality. In s ome operating modes, Des t Fl owOff set is added to the minimum f l ow set tings to increase the air fl ow when DestFlowOffset is positive.

BypassTime is t he time between the pressing of t he overri de but ton at the wall module (or initiating Bypass via DestManualOcc) and the return t o the original occupancy state. When the bypass st at e has been activated, the bypass timer is set to BypassTime.

StptLoLim is t he l owest val ue report ed by the setpoint knob. Dependent on the configuration of the set poi nt knob this setting is ei ther direct (degrees Fahrenheit or Celsius) in case of direc t setpoint knob configurat i on or offset (Delta Degrees or Degrees Kelvin) in case of off set setpoint knob confi guration. If the StptLoLi m is outside the range shown below, or if StptLoLi m is greater than StptHiLi m, the limit s shown below are used instead. Offset: Low Limit =-9°F (-5°C), High Limit = +9°F (+5°C) Direct: Low Limit = 55°F (12.8° C), Hi gh Li mit = 85°F (24.4°C)

StptHiLim is the highest value reported by the setpoint knob. Dependent on the configuration of the set poi nt knob this setting is ei ther direct (degrees Fahrenheit or Celsius) in case of direc t setpoint knob configurat i on or offset (Delta Degrees or Degrees Kelvin) in case of off set setpoint knob confi guration. If the StptHi Li m is outside the range shown below, or if StptLoLi m is greater than StptHiLi m, the limit s shown below are used instead. Offset: Low Limit = -9°F (-5°C), High Limit = +9°F (+5°C) Direct: Low Limit = 55°F (12.8° C), Hi gh Li mit = 85°F (24.4°C)

(continued)

95 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Table D2. Input/Output Points (Left Continued).

Digital

State

Engineering Units: English (Metric) or

User Address NvName Field Name States plus Range State Default

DlcBumpTemp nciAux1SetPt ubDlcBumpTempS1 0 to +10 degrees F

0 to +5.6 degrees C

Value

FlowTrackOfst nciAux1SetPt siTrackModeOffsetS O -2119 to 2119 CFM

(-3600 to 3600) m3h

PeriphPos nciAux1SetPt ubPeriphMinPosS1 percentage

0 to 100

WinOpnDmprPos nciAux1SetPt ubWinOpenPosS1 percentage

0 to 100

MinDmprPos nciAux1SetPt ubMinDamperPosS1 percentage

0 to 100

MaxDmprPos nciAux1SetPt ubMaxDamperPos S 1 percentage

0 to 100

ReHeatDmprPos nciAux1Set Pt ubReHeatDamperPosS1 percentage

0 to 100

StdbyDmprPos nciAux1SetP t ubStdbyDamperPosS1 percentage

0 to 100

74-2949–1 96

100

(continued)

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Table D2. Control Parameters(Right Continued).

Share (SH), Map (MA), Direct Access (DA)

E-Vision (EV): Cal ibrate (C), Monitor (M ),

Parameter (P), Schematic (S )

Hardware Configuration (HW),

Manual Point (MN), Test (TS)

EV SH MA DA HW MN TS Comments

M P

DlcBumpTemp specifies the amount of shift in the controlled space temperature when demand limit control (Des tDlcShed) is active. See DestDlcShed for more details.

FlowTrackOfst: When the Mode is FLOW_TRA CK ING, the air flow setpoint is FlowTrackOfst plus DestFlowTrack.

PeriphPos sets the minimum peripheral reheat val ve position as shown below. This feature allows the user to maintain flow in pipes that c an ot herwis e f reeze. Reheat Types: No_Local_Reheat. Elec_OneStage. Elec_TwoStage. Elec_ThreeStage. Elec_ThreeStageBin. Elec_OneStagePeriph. Float_Reheat: Minimum position of the floating reheat val ve. Float_Periph: Minimum position of the floati ng peri pheral heat valve. Float_Reheat_Periph: Minimum position of the floating peripheral heat valve. Float_Periph_Reheat: Minimum position of the floating peripheral heat valve. PWM_Reheat: Minimum position of the P ul se Width Modulation peri pheral heat valve. PWM_Periph: Minimum position of t he P ul se Width Modulation peri pheral heat valve. PWM_Reheat_Periph: Mini mum position of t he Pulse Width Modulat i on peri pheral heat valve. PWM_Periph_Reheat: Mini mum position of t he Pulse Width Modulat i on peri pheral heat valve. DualDuctReheat: Either Float HotDuctPrDep or Float_Reheat.

WinOpnDmprPos: The five configuration parameters WinOpnDmprPos, MinDmprPos, MaxDmprPos, ReheatDmprPos, and StdbyDmprPos set li mits on the damper posistion when ConfigP ressDep (Press_Dependent in E-Vision) is TRUE or when the flow sensor has failed. The fol l owing relat i onships must be true for the control to work properly. MinDmprPos < MaxDmprPos StdbyDmprPos < MaxDmprPos ReheatDmprPos < MaxDmprPos WinOpnDmprPos < MaxDmprPos

MinDmprPos: (See descri ption for WinOpnDmprPos above)

MaxDmprPos: (See description f or WinOpnDmprPos above)

ReheatDmprPos: (See description for Wi nOpnDmprPos above)

StdbyDmprPos: (S ee description for WinOpnDmprPos above)

(continued)

97 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Table D2. Control Parameters (Left Continued).

Digital

State

Engineering Units: English (Metric) or

User Address NvName Field Name States plus Range State Default

PressDmprPos nciAux1SetPt ubPressurizeS1 percentage

0 to 100

Value

100

DepressDmprPos nciAux1SetPt ubDePressurizeS1 percentage

0 to 100

PurgeDmprPos nciAux1SetPt ubNi ght PurgeS1 percentage

0 to 100

WarmupDmprPos nciAux1SetPt ubMornWarmS1 percent age

0 to 100

TempRamp nciAux1SetPt UbTempRampS0 0 to 36°F per Hour

0 to 20°C per Hour

FanEnableFlow nciAux1SetPt UiFanEnableFlowS0 0 to 10,000 CFM

(0 to 16,990) m3h

FreshAirReq nciAux1SetPt UiFreshAirRequiredS0 0 to 10,000 CFM

(0 to 16,990) m3h

GainCoolProp nciAux2SetPt ubTrCoolS2 1 to 20 degrees F

1 to 10.6 degrees C

GainHeatProp nciA ux2SetP t ubTrHeatS2 2 to 30 degrees F

1 to 17 degrees C

GainCoolInt nciAux2SetP t SiItCoolS0 seconds

0 to 5000

GainHeatInt nciAux2SetPt SiItHeatS0 seconds

0 to 5000

GainCoolDer nciAux2SetPt UbDtCoolS0 seconds

0 to 255

GainHeatDer nciAux2SetPt UbDtHeatS0 seconds

0 to 255

4000

2400

(continued)

74-2949–1 98

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Table D2. Control Parameters (Right Continued).

Share (SH), Map (MA), Direct Access (DA)

E-Vision (EV): Cal ibrate (C), Monitor (M ),

Parameter (P), Schematic (S )

Hardware Configuration (HW),

Manual Point (MN), Test (TS)

EV SH MA DA HW MN TS Comments

M P

PressDmprPos: The four configuration parameters PressDmprPos, DepressDmprPos, PurgeDmprPos, and WarmupDmprPos set l i mits on the damper position when ConfigPress Dep (P ress_Dependent in E-Vision) is TRUE. When ConfigPressDep (Press_Dependent in E-Visi on) i s FALSE, they set the limits on the air f l ow as a perc entage of the range between zero and MaxFlowSpt.

DepressDmprPos: (See description for PressDmprPos above).

PurgeDmprPos: (See description for PressDm prP os above).

WarmupDmprPos: (See description for PressDmprP os above).

When EffectOcc is OC_UNOCCUPIE D and the NextState is OC_OCCUPIED, then the setpoint is of f set by a value Ramp depending on TempRamp, the CmdTUNCOS and the current CoolOc cSpt or HeatOccSpt and CoolUnoc cSpt or HeaUnoccSpt.

FanEnableFlow: When the FanType is P aral lel _Fl ow, FanEnableFl ow is us ed to determine when there is enough air flow from the main air handler to turn the fan off.

FreshAirReq is the desired amount of fresh air required for this zone.

M P

GainCoolProp is the throttl i ng range f or the cooling control loop.

GainHeatProp is the throttl i ng range for the heating control loop.

GainCoolInt is the integral time for the cooling c ont rol l oop.

GainHeatInt is the integral time for the heating cont rol l oop.

GainCoolDer is the derivative time for the cooling control loop.

GainHeatDer is the derivative time for the heating control loop.

(continued)

99 74-2949–1

EXCEL 10 W7751B,D,F,H VAVII CONTROLLERS

Table D2. Control Parameters (Left Continued).

Digital

State

Engineering Units: English (Metric) or

User Address NvName Field Name States plus Range State Default

CorrDmpr10 nciAux2SetPt ubDamperDrive0 0 to 10 t i mes 0.1 sec. 0

Value

CorrDmpr20 nciAux2SetPt ubDamperDrive1 0 to 10 t i mes 0.1 sec. 0

CorrDmpr30 nciAux2SetPt UbDamperDrive2 0 to 10 tim es 0.1 sec. 0

CorrDmpr40 nciAux2SetPt UbDamperDrive3 0 to 10 tim es 0.1 sec. 1

CorrDmpr50 nciAux2SetPt UbDamperDrive4 0 to 10 tim es 0.1 sec. 1

CorrDmpr60 nciAux2SetPt UbDamperDrive5 0 to 10 tim es 0.1 sec. 1

CorrDmpr70 nciAux2SetPt UbDamperDrive6 0 to 10 tim es 0.1 sec. 1

CorrDmpr80 nciAux2SetPt UbDamperDrive7 0 to 10 tim es 0.1 sec. 2

CorrDmpr90 nciAux2SetPt UbDamperDrive8 0 to 10 tim es 0.1 sec. 3

CorrDmpr100 nciAux2SetPt UbDamperDrive9 0 to 10 tim es 0.1 sec. 5

(continued)

74-2949–1 100

Honeywell W7751D, W7751H, W7751B, W7751F SYSTEM ENGINEERING

Specifications and Main Features

Frequently Asked Questions

User Manual