KMC Controls BAC-8007 User Manual

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SimplyVAV

Application and Installation Guide

Revision E

SimplyVAV

SimplyVAV and the SimplyVAV logo are trademarks of KMC Controls, Inc.

All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language in any form by any means without the written permission of KMC Controls, Inc.

Printed in U.S.A.

The material in this manual is for information purposes only. The contents and the product it describes are subject to change without notice. KMC Controls, Inc. makes no representations or warranties with respect to this manual. In no event shall KMC Controls, Inc. be liable for any damages, direct or incidental, arising out of or related to the use of this manual.

KMC Controls, Inc.

19476 Industrial Drive New Paris, IN 46553 U.S.A. TEL: 1.574.831.5250 FAX: 1.574.831.5252 E-mail: info@kmccontrols.com

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SimplyVAV

C o n t e n t s

Contents 3

Section 1: About the controllers 5

Specifications Accessories and replacement parts Available models Safety considerations

11 12 13

Section 2: Installing the controllers 15

Setting the rotation limits Mounting on a VAV terminal box Connecting an airflow sensor Connecting inputs and outputs Connecting room temperature sensors Connecting a DAT sensor Connecting power Maintenance

16 17 18 18 19 20 21 22

Section 3: Changing the room setpoint 23

Section 4: Configuring the controllers 25

Getting started with configuration Entering system temperature setpoints and limits Configuring the VAV Box options Set the airflow setpoints Advanced options Restore Application

26 27 31 34 37 40

Section 5: Balancing airflow 43

Section 6: Application drawings 49

Cooling or heating without reheat Staged reheat Modulating reheat Time proportional reheat Floating reheat Dual-duct application

50 51 52 53 54 55

Section 7: Sequences of operation 57

Input sources Occupancy sequence

Automatic occupancy Occupied Unoccupied

58 59 59 59 59

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SimplyVAV

Standby

Space setpoints

Types of setpoints

Setpoint limits PID control loops Airflow setpoints sequence Changeover Discharge Air Temperature (DAT) limiting System diagnostics Damper operation Fan operation

Series Fan

ParallelFan Reheat sequence

Modulating reheat

Staged reheat

Time proportioned reheat

Floating reheat Balancing airflow sequence Dual duct

59 60 60 61 61 61 62 62 64 65 65 65 66 66 66 67 67 68 69 69

Section 8: System integration and networking 71

Connecting to an MS/TP network

Connections and wiring

End of line termination switches

Network bulbs Setting up network communications BACnet objects

Input objects

Output objects

Value objects

Loop objects

72 72 73 73 75 77 77 77 78 80

Appendix A: K-factors 83

Index 85

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SimplyVAV

S e c t i o n 1 : A b o u t th e c o n t r o ll e r s

This section provides a description of the SimplyVAV series of controllers. It also introduces safety information. Review this material before selecting, installing, or operating the controllers.

The SimplyVAV series of controllers are an easy and unique approach to operating a wide variety of VAV terminal units. The integrated actuators, internal airflow sensors, and wide variety of application programs make these BACnet Application Specific controllers ideal for either new or retrofit installations.

The controllers feature simple, menu driven setup choices when used with a SimplyVAV digital sensor. No special programming skills or software tools are required to choose applications, enter setpoints, set network addressing, and balance airflow. All options can be set by using only an STE-8001 sensor which can be installed as the permanent room sensor or temporarily connected as a technician’s service tool.

All models are BACnet Application Specific Controllers that are ready to connect to a BACnet MS/TP network. Device instance, MAC address, and baud rate are set from an STE-8001 without special software.

BAC-8001

of operation for the following functions.

Model BAC-8001 is supplied with inputs, outputs, and sequences

Single duct heating and cooling VAV

Automatic heating/cooling changeover including morning warmup

Occupancy setback—requires STE-8201

System diagnostic indicators

Airflow balancing

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Section 1: About the controllers SimplyVAV

BAC-8005 and BAC-8205

inputs, outputs, and sequences of operation for the following functions.

Single duct heating and cooling VAV

Modulating, floating, time proportional, and staged reheat

Series and parallel fan control

Automatic heating/cooling changeover including morning warmup

Discharge air temperature limiting

Occupancy setback—requires STE-8201

Actuator position feedback for true damper positioning (BAC-8205 only)

System diagnostic indicators

Airflow balancing

BAC-8007

of operation for the following functions.

Model BAC-8007 is supplied with inputs, outputs, and sequences

Dual-duct VAV heating and cooling

Occupancy setback—requires STE-8201

System diagnostic indicators

Airflow balancing

Models BAC-8005 and BAC-8205 are supplied with

Additional topics in this section

Specifications Accessories and replacement parts Available models Safety considerations

7 11 12 13

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SimplyVAV Section 1: About the controllers

Specifications

SimplyVAV specifications are subject to change without notice.

Inputs and outputs

All inputs and outputs are factory programmed and application specific. No field configuration is required. For details on input and output connections, see the topic Application drawings on page 49. For a detailed listing of input and output objects, see the topic BACnet objects on page 77.

Analog inputs

Analog inputs represent BACnet analog input. Not all input are applicable or required for all models.

Key features Standard units of measure.

Overvoltage input protection

Connectors RJ-45 room sensor jack

Screw terminals for wire sizes 12-26 AWG

Conversion 12–bit analog–to–digital conversion

Input range Passive, 10 kΩ pull-up to 3.3 volts DC

Analog outputs

Analog outputs are configured to represent BACnet analog output objects. No field configuration is required. For details on application specific output connections see the section Application drawings on page

49.

Key features Output short protection

Standard units of measure

Connector Screw terminals for wire size 12-26AWG

Conversion 12–bit digital-to-analog conversion

Output voltage 0–10 VDC

Output current 30 mA per output, 30 mA total for all analog

outputs

Binary outputs

Binary outputs are configured to represent BACnet binary output objects. No field configuration is required. For details on application specific output connections see the section Application drawings on page

49.

Key features Optically isolated triac output

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Section 1: About the controllers SimplyVAV

Connector Screw terminals for wire size 12-26 AWG

Output range Maximum switching 24 Volts AC

1 ampere per external output, 3 amperes total

Communications—BACnet MS/TP

EIA–485 operating at rates up to 76.8 kilobaud.

Removable screw terminal block.

Wire size 12-26AWG

Switch selected end of line termination

Memory

Programs and program parameters are stored in nonvolatile memory.

Auto restart on power failure

Air flow sensor features

Configured as BACnet analog input object.

CMOS differential pressure 0-2 inches of water (0-500 Pa) measurement range. Internally linearized and temperature compensated.

Span accuracy 4.5% of reading.

Zero point accuracy 0.0008 in. H2O/0.2 Pa at 25° C

Barbed connections for 1/4 inch FR tubing.

Actuator specifications

Torque 40 in-lb. (4.5 N•m)

Angular rotation 0 to 95°

Adjustable end stops at 45° and 60° rotation

Motor timing BAC-8001, BAC-8005, BAC-8007

Motor timing BAC-8205

Shaft size Directly mounts on 3/8 to 5/8inch (9.5to16mm)

90 sec./90° at 60 Hz 108 sec./90° at 50 Hz

60 sec./90° at 60 Hz

round or 3/8 to 7/16 inch (9.5to11 mm) square damper shafts.

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SimplyVAV Section 1: About the controllers

Regulatory

UL 916 Energy Management Equipment

BACnet Testing Laboratory listed as an application specific controller (ASC).

CE compliant

SASO PCP Registration KSA R-103263

FCC Class B, Part 15, Subpart B and complies with Canadian ICES-003 Class B

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Installation

Supply voltage 24 volts AC, -15%, +20% 5 VA,

Weight 13.2 ounces (376 grams)

50/60 Hz

Case material Flame retardant plastic

Environmental limits

Operating 32 to 120° F (0 to 49° C)

Shipping –40 to 140° F (–40 to 60° C)

Humidity 5–93% relative humidity (non-condensing)

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ON CTS

1 2

1.92 in. 49 mm

6.53 in.

166 mm

4.89 in.

124 mm

4.25 in.

108 mm

0.77 in. 19 mm

6.00 in.

152 mm

2.14 in. 54 mm

Section 1: About the controllers SimplyVAV

Dimensions

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SimplyVAV Section 1: About the controllers

Accessories and replacement parts

The following accessories and replacement parts are available from KMC Controls, Inc.

Sensors

STE-8001W80 SimplyVAV sensor and digital display

STE-8201W80 SimplyVAV sensor and digital display with motion

sensor

STE-6010W80 Discrete temperature sensor with RJ-45 connector

STE-6014W80 Discrete temperature sensor with rotary setpoint

dial, RJ-45 connector

STE-6017W80 Discrete temperature sensor with rotary setpoint

dial, override button, RJ-45 connector

Surge suppressors

KMD-5567 EIA-485 surge suppressor for MS/TPnetworks

Replacement parts

HPO-0054 Replacement bulbs

HPO-0063 Replacement two-pin jumper

Dual duct actuator

TSP-8001 VAV actuator with airflow inputs (required for

dual duct)

Airflow sensors

For VAV terminal units without airflow pickup tubes, order one of the following sensors.

SSS-1012 3-5/32 in. length (80 mm)

SSS-1013 5-13/32 in. length (137 mm)

SSS-1014 7-21-32 in. length (195 mm)

SSS-1015 9-29/32 in. length (252 mm)

KIT-8001 A 3-5/32 inch sensor and 3 feet of FR tubing

Revision E 11

Section 1: About the controllers SimplyVAV

Available models

The following is a list of SimplyVAV available models.

Description Models

BACnet ASC: VAV Cooling/Heating only, 40 in-lbs, 90second actuator

BACnet ASC: VAV Fan and Reheat, 40 in-lbs, 90second actuator

BACnet ASC: VAV Dual Duct, 40 in-lbs, 90second actuator

BACnet ASC: VAV Fan and Reheat, True damper position, 40 in-lbs, 60 second actuator

BAC-8001

BAC-8005

BAC-8007

BAC-8205

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Danger

Warning

Caution

SimplyVAV Section 1: About the controllers

Safety considerations

KMC Controls assumes the responsibility for providing you a safe product and safety guidelines during its use. Safety means protection to all individuals who install, operate, and service the equipment as well as protection of the equipment itself. To promote safety, we use hazard alert labeling in this manual. Follow the associated guidelines to avoid hazards.

Danger represents the most severe hazard alert. Bodily harm or death will occur if danger guidelines are not followed.

Warning represents hazards that could result in severe injury or death.

Caution indicates potential personal injury or equipment or property damage if instructions are not followed.

Note: Notes provide additional information that is important.

Tip: Provides programing tips and shortcuts that may save time.

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Section 1: About the controllers SimplyVAV

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SimplyVAV

S e c t i o n 2 : In st all in g t h e c o nt r o ll e r s

This section provides important instructions and guidelines for installing the SimplyVAV controllers. Carefully review this information before installing the controller.

Installing SimplyVAV includes the following topics that are covered in this section.

Installation topics in this section

16 17 18 18 19 20 21 22

Revision E 15

Caution

Position notch as shown

Stop position holes

Stop screw in storage

Rotate CW

Section 2: Installing the controllers SimplyVAV

Setting the rotation limits

SimplyVAV controllers are manufactured for a damper that rotates 90 degrees from open to close. If the VAV damper is not a 90 degree damper, set the rotation limits to 45 or 60 degrees before mounting the controller.

Before setting the rotation limits on the controller, refer to the damper position specifications in the VAV control box to which the controller will be attached. Setting rotation limits that do not match the VAV damper may result in improper operation or equipment damage.

Illustration 2–1 Controller rotation limit selections

To set the rotational limits, do the following

1. Turn the controller over so you have access to the back.

2. Manually rotate the actuator fully clockwise as viewed from the back.

3. Remove the stop screw from its storage location and clean any debris from the threads.

4. Insert the screw into the correct stop position hole.

5. Tighten the screw only until the head touches the plastic in the bottom

16 Revision E

of the recess.

ON CTS

1 2

COMM READY

AI1

AI5

GND

AO4

AO3

BO8

BO5

BO6

BO7

24VAC

AI6

GND

AI7

T-STAT/

SENSOR

-A

EOL

BACnet MS/TP

Status LEDs

Mounting

tab

Mounting bushing

Gear clutch button

Drive hub and V-bolt

SimplyVAV Section 2: Installing the controllers

Mounting on a VAV terminal box

Note: SimplyVAV controllers are designed to directly mount to 3/8 to 5/8inch

Mount the controller inside of a metal enclosure. To maintain RF emissions specifications, use either shielded connecting cables or enclose all cables in conduit.

Mount the controller directly over the damper shaft. A minimum shaft length of 2.0 inch (51 mm) is required.

(9.5to16mm) round or 3/8 to 7/16 inch (9.5to11 mm) square damper shafts.

Illustration 2–2 Controls and indicators

Mount the controller as follows:

1. Manually rotate the damper on the VAV box to the fully open position.

2. On the controller, press the gear clutch button and rotate the drive hub in the same direction that opened the damper. Turn the hub until it reaches a rotation limit.

3. Loosen the nuts on the V-bolt until the damper shaft can fit through the collar.

4. Place the controller over the damper shaft.

5. Finger tighten the nuts on the V-bolt to position the shaft in the drive hub.

6. Center the mounting bushing in the mounting tab and fasten it with a #8 sheet metal screw.

7. Evenly tighten the V-bolt nuts on the drive hub to 30-35 in-lbs.

Revision E 17

ON CTS

1 2

COMM READY

24VAC

T-STAT/

SENSOR

-A

EOL

BACnet MS/TP

Total airflow (high) Static airflow (low)

Section 2: Installing the controllers SimplyVAV

Connecting an airflow sensor

An airflow sensor is incorporated as one of the inputs to the controller. Remove the plugs and connect the tubing from the pitot assembly to the airflow sensor inputs next to the drive hub.

Illustration 2–3 Airflow sensor inputs

Typically, airflow sensors are supplied by the manufacturer as part of the VAV terminal unit. If a sensor is needed, choose a sensor listed in the topic

Accessories and replacement parts on page 11.

Connecting inputs and outputs

SimplyVAV series controllers have preconfigured inputs and outputs to support only the supplied programs and applications.

For input and output connection information, see the topic Application

drawings on page 49.

To connect room temperature sensors, see the topic Connecting room

temperature sensors on page 19

To connect a DAT sensor, see the topic Connecting a DAT sensor on page

20.

For the BACnet object descriptions of the inputs and outputs, see the topic BACnet objects on page 77.

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Ethernet cable

Maximum 75 feet

SimplyVAV Section 2: Installing the controllers

Connecting room temperature sensors

Connect any of the following sensors to the RJ-45 thermostat and sensor jack. The controller automatically detects the type of sensor. No programming or configuration is required.

STE-6010

STE-6014

STE-8001

STE-8201

STE-6017

Connect the controller to sensors with standard Ethernet cables up to 75 feet long. See the installation guide supplied with the sensors for sensor installation instructions.

Illustration 2–4 Connecting to a sensor

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DAT sensor Prefered location

DAT sensor Changeover only

COMM READY

AI1

GND

AO4

AO3

Section 2: Installing the controllers SimplyVAV

Connecting a DAT sensor

The Discharge Air Temperature sensor is required for automatic changeover and for VAV terminal units with reheat.

Illustration 2–5 Discharge air temperature sensor location

Connect a 10 kΩ, Type 3 thermistor temperature probe to the discharge air temperature input. The input includes the internal pull-up resistor. An STE-1401 sensor is suitable for this application. Follow the instructions supplied with the sensor for installation.

For DAT limiting and reheat, install the sensor in the airflow after the reheat unit. See the topic, Advanced options on page 37 to enable discharge air temperature control.

When the DAT sensor is used only to detect primary air temperature, the sensor can be placed in either location shown in the illustration

Discharge air temperature sensor location.

Illustration 2–6 Discharge air temperature input details

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Blue

Brown

24 VAC Class 2

ON CTS

1 2

COMM READY

AI1

AI5

GND

AO4

AO3

BO8

BO5

BO6

BO7

24VAC

AI6

GND

AI7

T-STAT/

SENSOR

-A

EOL

BACnet MS/TP

SimplyVAV Section 2: Installing the controllers

Connecting power

The controllers require a 24 volt, AC power source. Use the following guidelines when choosing and wiring transformers to the controller.

Use a Class–2 transformer of the appropriate size to supply power to the controller.

KMC Controls recommends powering only one controller from each transformer.

Do not run 24 volt, AC power from within an enclosure to external controllers.

Connect the 24 volt AC power supply to the power terminal block on the lower right side of the controller. Connect the ground side of the transformer to the ground terminal and the AC phase to the phase terminal. Power is applied to the controller when the transformer is connected to power.

Illustration 2–7 Controller power terminals

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Section 2: Installing the controllers SimplyVAV

Maintenance

SimplyVAV controllers require no routine maintenance. If necessary, clean with a damp cloth and mild soap.

22 Revision E

Set

Point

12S1

SimplyVAV

S e c t i o n 3 : Ch an g in g th e r o o m se t po i n t

This section covers topics for the end user in a facility.

Changing the SimplyVAV user functions with an STE-8001 or STE-8201 are limited to changing the active setpoints in a room. The setpoints are entered or changed using the buttons and display on the front of the sensor.

Quick start to changing setpoints

Press any button to begin changing setpoints.

If required, enter Password 1.

Press the up or down buttons to change a sepoint value.

Press the advance to the next function.

button to save the value or

To enter or change the active setpoints you may need Password 1.

Tip: Once the following procedure is started, all steps must be completed in

order.

Changing room setpoints

Procedure Steps STE display

1 Starting display

Start from the temperature display.

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Set

Point

PSW1

OOOO

Set

Point

745

COOLING

Set Point

685

HEATING

Section 3: Changing the room setpoint SimplyVAV

Changing room setpoints (continued)

Procedure Steps STE display

2 Enter Password 1.

Press any button. The display changes to

PSW1.

Press the or buttons to change the first digit.

Press the

button to select the next digit.

Repeat for all four digits.

Note: If Password 1 has not previously been

entered, the display will change to the occupied cooling setpoint display after Step 1.

3 Set the active cooling

setpoint.

Press the or buttons to change the cooling setpoint temperature. The setpoint changes in increments of 0.5 degrees.

Press the

button to save the value.

4 Set the active heating

setpoint.

The display advances to set the heating setpoint.

Press the or buttons to change the heating setpoint temperature. The setpoint changes in increments of 0.5 degrees.

Press the

button to save the value.

The display returns to the temperature display.

24 Revision E

SimplyVAV

S e c t i o n 4 : Co n f ig u r in g t h e c o n t r o ll e r s

This topics in this section are advanced topics for control technicians and engineers.

The configuration functions that are accessible through an STE-8000 series sensor are all of the values and settings that are entered during the installation and commissioning of a VAV terminal unit. Typically, these functions do not change after the installation and commissioning process.

To set up the configuration functions, you will need the following items and information.

Details about the VAV terminal unit including the configuration for fans and reheat.

An STE-8001 or STE-8201 to use as a configuration tool.

The building automation system plans for controllers connected to a network.

Users may change the active heating and cooling setpoints without accessing the configuration functions. This procedure is covered in the topic Changing

the room setpoint on page 23.

Note: The instructions for the configuration functions cover all of the functions that

an STE-8000 sensor can set up in the SimplyVAV series of controllers. Not all functions are available on every model of controller.

Configuration topics

Getting started with configuration Entering system temperature setpoints and limits Configuring the VAV Box options Set the airflow setpoints Advanced options Restore Application

26 27 31 34 37 40

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12S1

Set

Point

PSW2

OOOO

CNFG

Section 4: Configuring the controllers SimplyVAV

Getting started with configuration

Enter the configuration mode

Procedure Detailed steps STE display

1 Starting display

2 Enter Password 2.

For access to the configuration functions you will need Password 2.

If the controller has not been previously set up, no password is required.

A new Password 2 can be entered or changed in the advance functions. See the topic Advanced options on page 37.

Start at the temperature display.

Press the and buttons together.

l If Password 2 is not required, the display

changes to CNFG.

l If required, enter Password 2. The display

changes to CNFG when Password 2 is correct.

Press the and buttons together and hold them down until the display changes to PSW2.

Press the or button to change the first digit.

Press the Repeat for all four digits.

When the button is pushed for the fourth correct digit, the display changes to COMM.

button to select the next digit.

3 Select a configuration

26 Revision E

function.

Note: If Password 2 has not previously been

entered the display will change to the CNFG display after Step 1.

Access to the configuration functions always start

CNFG

at the

display.

12S1

PSW2

OOOO

Set

Point

Set

Point

CNFG

STPT

SimplyVAV Section 4: Configuring the controllers

Entering system temperature setpoints and limits

The system temperature setpoints set the operational parameters and limits for the VAV terminal unit.

The temperature setpoints include the following items.

Minimum cooling and maximum heating setpoints

Occupied and unoccupied cooling setpoints

Occupied and unoccupied heating setpoints

Changeover differential setpoint

Standby differential setpoint

Setting the temperature setpoints requires entering Password 2 which is described in detail in the topic Getting started with configuration on page 26.

Tip: Once the following procedure is started, all steps must be completed in

order.

Procedure to set the temperature setpoints

Procedure Detailed steps STE display

1 Start at the temperature

display.

Start at the temperature display.

2 Select the setpoint

display.

Press the and buttons together.

l If Password 2 is not required, the display

changes to CNFG.

l If required, enter Password 2. The display

changes to CNFG when Password 2 is correct.

From the CNFG display, press the or buttons to show STPT.

Press the The display changes to STPT.

Press the changes to MIN.

button to select the CNFG options.

button to select STPT. The display

Revision E 27

Set

Point

MIN

68O

Set

Point

MAX

78O

Set

Point

OCCL

74O

Section 4: Configuring the controllers SimplyVAV

Procedure to set the temperature setpoints (continued)

Procedure Detailed steps STE display

3 Set the minimum cooling

setpoint.

4 Set the maximum heating

setpoint.

5 Set the occupied cooling

setpoint.

This setpoint limits the lowest temperature that a user can enter as the active setpoint.

Press the or buttons to set the minimum cooling setpoint. The setpoint will change in

0.5° increments.

Press the

button to save the setpoint and

advance to the next function.

This setpoint limits the highest temperature a user can enter as the active setpoint.

Press the or buttons to set the maximum heating setpoint. The setpoint will change in

0.5° increments.

Press the

button to save the setpoint and

advance to the next function.

This setpoint is used as the active setpoint when the space is occupied.

Press the or buttons to set the occupied cooling setpoint. The setpoint will change in

0.5° increments.

Press the

button to save the setpoint and

advance to the next function.

28 Revision E

Note: This setpoint can also be changed as

described in the topic Changing the room

setpoint on page 23.

Set

Point

OCHT

7OO

Set

Point

UNCL

8OO

Set

Point

UNHT

62O

Set

Point

CHNG

SimplyVAV Section 4: Configuring the controllers

Procedure to set the temperature setpoints (continued)

Procedure Detailed steps STE display

6 Set the occupied heating

setpoint.

7 Set the unoccupied

cooling setpoint.

This setpoint is used as the active setpoint when the space is occupied.

Press the or buttons to set the occupied heating setpoint. The setpoint will change in

0.5° increments.

Press the

button to save the setpoint and

advance to the next function.

Note: This setpoint can also be changed as

described in the section Changing the room

setpoint on page 23.

This setpoint is used as the active setpoint when the space is unoccupied.

Press the or buttons to set the unoccupied cooling setpoint. The setpoint will change in 0.5° increments.

Press the

button to save the setpoint and

advance to the next function.

8 Set the unoccupied

heating setpoint.

9 Set the supply air

temperature changeover setpoint.

Not used in all models.

This setpoint is used as the active setpoint when the space is unoccupied.

Press the or buttons to set the unoccupied heating setpoint. The setpoint will change in 0.5° increments.

Press the

button to save the setpoint and

advance to the next function.

This setpoint sets the supply air temperature at which the controller will change between heating to cooling.

Press the or buttons to set the changeover setpoint. The setpoint will change in 1° increments.

Press the

button to save the setpoint and

advance to the next function.

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Set

Point

DIFF

Set

Point

Set

Point

STPT

Section 4: Configuring the controllers SimplyVAV

Procedure to set the temperature setpoints (continued)

Procedure Detailed steps STE display

10 Set the minimum

temperature differential setpoint.

11 Set the standby

differential setpoint.

12 Select a new

configuration function or exit.

The minimum allowable temperature value between the cooling and heating setpoints.

Press the or buttons to set the differential setpoint. The setpoint will change in 1° increments.

Press the

button to save the setpoint and

advance to the next function.

The standby setpoint is calculated by adding or subtracting the offset value to or from the value of the occupied setpoint.

Press the or buttons to set the standby differential setpoint. The setpoint will change in 1° increments.

Press the

button to save the setpoint and

advance to the next function.

Press the or buttons to select one of the following:

BOX, FLOW, ADVC, or RSTR options

Press the

BACK to choose another configuration

function.

EXIT to return to the temperature display.

button to select the next function.

30 Revision E

12S1

PSW2

OOOO

Set

Point

Set

Point

CNFG

STPT

BOX

SimplyVAV Section 4: Configuring the controllers

Configuring the VAV Box options

Tip: Once the following procedure is started, all steps must be completed in

Procedure to set the box functions

Procedure Detailed steps STE display

1 Starting display

The box options set the controller for the specific mechanical installation of the VAV terminal unit. The box options include the following items.

The K-factor for the VAV terminal unit. If the K-factor is not available, see the topic K-factors on page 83.

Reheat configuration (optional)

Fan configuration (optional)

Direction of damper to close

Setting the box options requires entering Password 2 which is described in the topic Getting started with configuration on page 26.

order.

Start at the temperature display.

2 Select the box settings

display.

Press the and buttons together.

l If Password 2 is not required, the display

changes to CNFG.

l If required, enter Password 2. The display

changes to CNFG when Password 2 is correct.

From the CNFG display, press the or buttons to show the BOX display.

Press the The display changes to STPT.

Press the or buttons to change the display to BOX.

Press the

button to select the CNFG options.

button to select BOX.

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Set

Point

9O4

PKFT

Set

Point

9O4

SKFT

Set

Point

NONE

REHT

Section 4: Configuring the controllers SimplyVAV

Procedure to set the box functions (continued)

Procedure Detailed steps STE display

3 Set the primary VAV

terminal unit K-factor.

4 Set the secondary VAV

terminal unit K-factor.

Not used in all models.

5 Set the mode of reheat

for the terminal unit.

Not used in all models.

The K-factor is supplied by the manufacturer of the VAV terminal unit. Typically it is on the label with the unit airflow information.

Press the or buttons to set the primary K-factor.

Press the advance to the next function.

The K-factor is supplied by the manufacturer of the VAV terminal unit. Typically it is on the label with the unit airflow information.

Press the or buttons to set the secondary K-factor.

Press the advance to the next function.

Press the or buttons to choose one of the following reheat options.

button to save the entry and

None—Reheat is not enabled.

Staged—Enables staged reheat.

Modulating—The analog reheat output varies

from 0-10 volts DC.

Floating—The reheat outputs control a tristate

actuator.

Time proportional—Controls a thermal wax

valve with a 24-volt triac output.

Press the and advance to the next function.

button to save the reheat option

32 Revision E

Set

Point

NONE

FAN

Set

Point

CCW

DDIR

Set

Point

BOX

SimplyVAV Section 4: Configuring the controllers

Procedure to set the box functions (continued)

Procedure Detailed steps STE display

6 Set the fan option.

Press the or buttons to choose one of the following fan options.

Not used in all models.

None—No fan is connected to the controller.

Series—The VAV unit includes a series fan.

Parallel—The VAV unit includes a parallel fan.

7 Set the damper direction

to close.

Press the advance to the next function.

Press the or buttons to which direction to damper moves to close.

button to save the fan option and

CCW—The actuator turns counterclockwise to

close the damper.

8 Select a new

configuration function or exit.

CW—The actuator turns clockwise to close the

damper.

Press the and advance to the next function.

Press the or buttons to select one of the following:

button to save the damper option

STPT, FLOW, ADVC. or RSTR options BACK to choose another configuration

function

EXIT to return to the temperature display.

Press the

button to select the next function.

Revision E 33

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Section 4: Configuring the controllers SimplyVAV

Set the airflow setpoints

Note: If the VAV unit is a heat only or cooling only unit, the airflow setpoints for

Tip: Once the following procedure is started, all steps must be completed in

Procedure to set the airflow setpoints

Procedure Detailed steps STE display

1 Starting display

The airflow setpoints set the airflow limits for the VAV terminal unit.

Airflow heating and cooling minimum and maximum limits

Auxiliary flow setpoint (optional)

Minimum and maximum fan speeds (optional)

Setting the airflow setpoints requires entering Password 2 which is described in the topic Getting started with configuration on page 26.

the unused mode must be set within the range of the mode in use. Failure to set the unused setpoints correctly will result in unpredictable or erroneous air balancing settings.

order.

Start at the temperature display.

Press the and buttons together.

l If Password 2 is not required, the display

changes to CNFG.

l If required, enter Password 2. The display

changes to CNFG when Password 2 is correct.

34 Revision E

Set

Point

Set

Point

CNFG

STPT

FLOW

Set

Point

MNCL

Set

Point

3SO

MXCL

Set

Point

200

AUXF

Set

Point

MNHT

SimplyVAV Section 4: Configuring the controllers

Procedure to set the airflow setpoints (continued)

Procedure Detailed steps STE display

2 Select the flow setpoint

display.

3 Set the cooling minimum

airflow limit.

From the CNFG display, press the or buttons to show the CNFG display.

Press the The display changes to STPT.

Press the or buttons to change the display to FLOW.

Press the changes to MNCL.

Press the or buttons to set the minimum limit for cooling airflow. The setpoint changes in 1 CFM increments.

Press the advance to the next function.

button to select the CNFG options.

button to select FLOW. The display

button to save the setpoint and

4 Set the cooling maximum

airflow limit.

5 Set the axillary airflow

setpoint.

Not used for all models.

6 Set the heating minimum

airflow limit

Press the or buttons to set the maximum limit for cooling airflow. The setpoint changes in 1 CFM increments.

Press the advance to the next function.

This setpoint sets the airflow for when reheat is active auxiliary airflow.

Press the or buttons to set a value for the auxillary airflow. The setpoint changes in 1 CFM increments.

Press the advance to the next function.

Press the or buttons to set the minimum limit for heating airflow. The setpoint will change in 1 CFM increments.

Press the advance to the next function.

button to save the setpoint and

Revision E 35

Set

Point

3SO

MXHT

Set

Point

MINF

Set

Point

1OO

MAXF

Set

Point

1OO

DLMN

Set

Point

FLOW

Section 4: Configuring the controllers SimplyVAV

Procedure to set the airflow setpoints (continued)

Procedure Detailed steps STE display

7 Set the heating maximum

airflow limit.

Press the or buttons to set the maximum limit for heating airflow. The setpoint will change in 1 CFM increments.

Press the

button to save the setpoint and

advance to the next function.

8 Set the minimum limit

for fan speed.

Press the or buttons to set the minimum limit for the fan speed. The setpoint will change in 1% increments.

Not used for all models.

Press the

button to save the setpoint and

advance to the next function.

9 Set the maximum limit

for fan speed.

Press the or buttons to set the maximum limit for the fan speed. The setpoint will change in 1% increments.

Not used for all models.

Press the

button to save the setpoint and

advance to the next function.

10 Set the dual duct

minimum airflow.

Not used for all models.

11 Select a new

configuration function or exit.

This setpoint is for the minimum airflow when a dual-duct system is at temperature setpoint.

Press the or buttons.

Press the

button to save the setpoint and

advance to the next function.

Press the or buttons to select one of the following:

STPT, BOX, ADVC, or RSTR options BACK to choose another configuration

function EXIT.

Press the

button to select the next function.

36 Revision E

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Set

Point

Set

Point

CNFG

STPT

ADVC

SimplyVAV Section 4: Configuring the controllers

Advanced options

Tip: Once the following procedure is started, all steps must be completed in

Table 4–1 Procedure to set the advanced options

Procedure Steps STE display

1 Starting display

The advanced options set up passwords and special features in the controller.

Establish or change Password 1 and Password 2

Set timers for standby and override (optional)

Enable automatic occupancy (optional)

Enable discharge air temperature control (optional)

Calibrate the sensor

Setting the advance options requires entering Password 2 which is described in the topic Getting started with configuration on page 26.

order.

Start at the temperature display.

Press the and buttons together.

2 Select the advanced

display.

l If Password 2 is not required, the display

changes to CNFG.

l If required, enter Password 2. The display

changes to CNFG when Password 2 is correct.

From the CNFG display, press the show the STPT display.

Press the or buttons to change the display to ADVC.

Press the

button to select ADVC.

button to

Revision E 37

Set

Point

Set

Point

PSW1

OOOO

Set

Point

Set

Point

PSW2

OOOO

Set

Point

OVRD

Set

Point

Set

Point

DISABLE

DAT

Section 4: Configuring the controllers SimplyVAV

Procedure to set the advanced options (continued)

Procedure Steps STE display

3 Change Password 1.

4 Change Password 2.

Note: Entering four zeros (0000) removes the

password.

Press the or buttons to change the first digit.

Press the

button to select the next digit.

Repeat for all four digits.

When the

button is pressed for the last digit, the new password is saved and the display advances.

Note: Entering four zeros (0000) removes the

password.

Press the or buttons to change the first digit.

Press the

button to select the next digit.

Repeat for all four digits.

When the

button is pressed for the last digit, the new password is saved and the display advances.

5 Set the local unoccupied

override timer.

Applies only to STE-6017 sensors.

6 Set the standby time

Applies only to STE-8201 sensors.

7 Set discharge air

temperature limiting.

Not used for all models. Required for reheat.

Press the or buttons to set the local unoccupied override timer. The value will change in 1 minute increments.

Press the

button to save the setpoint and

advance to the next function.

Press the or buttons to set the time for the standby time. The value will change in 1 minute increments.

Press the

button to save the setpoint and

advance to the next function.

Press the or buttons to enable or disable discharge air temperature limiting.

Press the

button to save the setpoint and

advance to the next function.

38 Revision E

Set

Point

DISABLE

AUMD

Set

Point

CALIB

Set

Point

ADVC

SimplyVAV Section 4: Configuring the controllers

Procedure to set the advanced options (continued)

Procedure Steps STE display

8 Set the automatic

occupancy mode.

Requires a discharge air temperature sensor.

Press the or buttons to enable or disable discharge air temperature limiting.

Press the

button to save the setpoint and

advance to the next function.

Enable The controller will automatically

changed to the unoccupied state when it detects the loss of primary air supply.

Disable The controller will remain in the

occupied mode regardless of the primary air supply.

9 Set the temperature

sensor calibration constant.

Press the or buttons to set the calibration constant. The setpoint will change in0.1 minute increments.

l For a low input reading enter a positive

correction value.

l For a high input reading enter a negative

correction value.

10 Select a new

configuration function or exit.

Press the

button to save the setpoint and

advance to the next function.

Press the or buttons to select one of the following:

STPT, FLOW, BOX, or RSTR options BACK to choose .another configuration

function

EXIT to return to the temperature display.

Press the

button to select the next function.

Revision E 39

Caution

12S1

PSW2

OOOO

Section 4: Configuring the controllers SimplyVAV

Restore Application

Tip: Once the following procedure is started, all steps must be completed in

Choose the RSTR function to reset the SimplyVAV controller to the original configuration and settings. Use it also to change the units of measure to display on a SimplyVAV sensor. There are two versions of the application program in the controller.

The Metric version displays temperature in Celsius and uses metric values for units of measure.

The English version displays temperature in Fahrenheit and uses English values for units of measure.

Access to the Restore Application function requires entering Password 2 which is described in the topic Getting started with configuration on page 26.

order.

Choosing RSTR deletes all previously configured values including balancing values and passwords. Only the BACnet communications settings will remain unchanged.

Procedure to restore application

Procedure Detailed steps STE display

1 Starting display

Start at the temperature display.

Press the and buttons together.

l If Password 2 is not required, the display

changes to CNFG.

l If required, enter Password 2. The display

changes to CNFG when Password 2 is correct.

40 Revision E

Set

Point

Set

Point

CNFG

STPT

RSTR

Set

Point

METRIC

RSTR

ENGLISH

RSTR

SimplyVAV Section 4: Configuring the controllers

Procedure to restore application (continued)

Procedure Detailed steps STE display

2 Select the restore settings

display.

From the CNFG display, press the or buttons to show the CNFG display.

Press the The display changes to STPT.

Press the or buttons to change the display to RSTR.

button to select the CNFG options.

Caution: Choosing RSTR deletes all

previously entered values and returns the controller to the manufacturer's settings. Only the BACnet communications settings will remain unchanged.

3 Choose the application.

Press the

Press the or buttons to choose ENGLISH or METRIC.

button to select RSTR.

Metric The sensor displays temperature in

Celsius and uses metric values for units of measure.

English The sensor displays temperature in

Fahrenheit and uses English values for units of measure.

Press the advance to the next function.

button to save the entry and

Revision E 41

Section 4: Configuring the controllers SimplyVAV

42 Revision E

SimplyVAV

S e c t i o n 5 : B ala nc i ng ai r fl o w

Topics in this section are for control technicians or engineers who will be balancing the airflow in the controllers.

The airflow balancing procedure described in this section requires the following items.

A flow hood or other accurate method to measure airflow.

An STE-8001 or STE-8201 wall sensor. If the system does not include one of these sensors, temporarily disconnect the installed sensor and connect an STE-8001 as a service tool.

The engineering design specifications for the minimum and maximum airflow setpoints.

Password 2 which is described in the topic Getting started with

configuration on page 26.

Note: If the VAV unit is a heat only or cooling only unit, the airflow setpoints for

the unused mode must be set within the range of the mode in use. Failure to set the unused setpoints correctly will result in unpredictable or erroneous air balancing settings. See Set the airflow setpoints on page 34 for the procedure to adjust the setpoints.

Note: Starting the balancing procedure erases all previous airflow correction

factors. The airflow readings displayed by the STE-8001 are the actual uncorrected airflow readings as measured by the controller.

Tip: Once the following procedure is started, all steps must be completed in

order.

Revision E 43

12S1

PSW2

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Set

Point

Set

Point

CNFG

COMM

BLNC

PRI

Section 5: Balancing airflow SimplyVAV

Table 5–1 The airflow balancing procedure

Procedure Steps STE display

1 Starting display

2 Select the CNFG display.

Start at the temperature display.

Press the and buttons together.

l If Password 2 is not required, the display

changes to CNFG.

l If required, enter Password 2. The display

changes to CNFG when Password 2 is correct.

From the CNFG display, press the or buttons to advance to COMM and the BLNC display.

Press the advances to PRI.

Press the

button to select BLNC. The display

button to select PRI.

44 Revision E

Set

Point

Set

Point

PMAX

Set

Point

Set

Point

PMIN

SimplyVAV Section 5: Balancing airflow

The airflow balancing procedure (continued)

Procedure Steps STE display

3 Measure and enter the

actual maximum primary airflow

4 Measure and enter the

actual minimum primary airflow

The display begins flashing PMAX and also displays the actual airflow at the bottom.

Note: The airflow will attempt to stabilize on

the highest value for either the cooling or heating maximum airflow even if only one mode is operational.

Note: The airflow displayed by the STE-8000

in this step is the actual, uncorrected airflow.

Wait for the maximum airflow value to stabilize.

With a flow hood, measure the actual airflow.

Press the

button to advance to the entry

display. PMAX stops flashing.

Press the or buttons to enter the measured airflow.

Press the

button to save the measured

airflow. The display changes to PMIN.

The display begins flashing PMIN and also displays the actual airflow at the bottom.

Note: The airflow will attempt to stabilize on

the lowest value for either the cooling or heating minimum airflow even if only one mode is operational.

Revision E 45

Note: The airflow displayed by the STE-8000

in this step is the actual, uncorrected airflow.

Wait for the minimum airflow value to stabilize.

With a flow hood, measure the actual airflow.

Press the

button to advance to the entry

display. PMIN stops flashing.

Press the or buttons to enter the measured airflow.

Press the

button to save the measured

airflow. The display advances to PRI.

Set

Point

PRI

SEC

Set

Point

Set

Point

SMAX

Section 5: Balancing airflow SimplyVAV

The airflow balancing procedure (continued)

Procedure Steps STE display

5 Advance or exit

Press the or buttons to select one of the following:

SEC to balance the secondary VAV for dual

duct systems. Choosing SEC advances to the SMAX display. This is available only on dual duct models.

BACK to choose another commissioning

function

EXIT to return to the temperature display.

Press the

button to select the next function.

6 Measure and enter the

actual maximum secondary airflow

The display begins flashing SMAX and also displays the actual airflow at the bottom.

Note: The airflow displayed by the STE-8000

in this step is the actual, uncorrected airflow.

Wait for the maximum airflow value to stabilize.

With a flow hood, measure the actual airflow.

Press the

button to advance to the entry

display. SMAX stops flashing.

Press the or buttons to enter the measured airflow.

Press the

button to save the measured

airflow. The display advances to SMIN.

46 Revision E

Set

Point

Set

Point

SMIN

Set

Point

SEC

SimplyVAV Section 5: Balancing airflow

The airflow balancing procedure (continued)

Procedure Steps STE display

7 Measure and enter the

actual minimum secondary airflow

8 Advance or exit

The display begins flashing SMIN and also displays the actual airflow at the bottom.

Note: The airflow displayed by the STE-8000

in this step is the actual, uncorrected airflow.

Wait for the minimum airflow value to stabilize.

With a flow hood, measure the actual airflow.

Press the

button to advance to the entry

display. SMIN stops flashing.

Press the or buttons to enter the measured airflow.

Press the

button to save the measured

airflow. The display advances to SEC.

Press the or buttons to select one of the following:

PRI to balance the primary VAV for dual

duct systems

BACK to choose another configuration

function.

Press the

EXIT to return to the temperature display.

button to select the next function.

Revision E 47

Section 5: Balancing airflow SimplyVAV

48 Revision E

SimplyVAV

S e c t i o n 6 : A p p lic a tio n dr a w in g s

This section covers the drawings, materials, and instructions for specific VAV applications.

Each SimplyVAV model is designed for a specific set of applications. The following topics are for control technicians and engineers that will plan for and install controllers for SimplyVAV applications.

Submittal sheets for all of these applications are available from the Resources page at www.SimplyVAV.com.

Application drawings in this section

Cooling or heating without reheat Staged reheat Modulating reheat Time proportional reheat Floating reheat Dual-duct application

50 51 52 53 54 55

Revision E 49

24 VAC

Duct

Temp

Sensor

ON CTS

1 2

COMM READY

AI1

AI5

GND

AO4

AO3

BO8

BO5

BO6

BO7

24VAC

AI6

GND

AI7

T-STAT/

SENSOR

-A

EOL

BACnet MS/TP

Section 6: Application drawings SimplyVAV

Cooling or heating without reheat

The BAC-8001 is configured for single-duct cooling VAV control without reheat. Connect the controller as shown in the illustration Cooling or heating

application drawing on page 50. A BAC-8005 or BAC-8205 may also be used

for this application.

For cooling and heating, a duct temperature sensor is required for Discharge Air Temperature limiting and automatic changeover. See the topic Advanced

options on page 37 for instructions to enable Discharge Air Temperature

limiting.

Submittal sheets for several variations of this application are available from the Resources page at www.SimplyVAV.com.

Illustration 6–1 Cooling or heating application drawing

50 Revision E

ON CTS

1 2

COMM READY

AI1

AI5

GND

AO4

AO3

BO8

BO5

BO6

BO7

24VAC

AI6

GND

AI7

T-STAT/

SENSOR

-A

EOL

BACnet MS/TP

Fan

Speed

Duct

Temp

Sensor

Stage 1 Stage 2 Stage 3

24VAC

Fan start

Reheat

24 VAC

SimplyVAV Section 6: Application drawings

Staged reheat

This application is for BAC-8005 or BAC-8205 controllers. The controllers are configured to switch reheat units that are controlled with 24 volts AC. Reheat units with up to three stages of reheat can be controlled by these controllers.

For one-stage or electric reheat or hot water reheat with an on/off valve, use only output terminal BO6.

For two-stage reheat use output terminals BO6 and BO7.

For three-stage reheat use output terminals BO6, BO7, and BO8.

For cooling and heating, a duct temperature sensor is required for Discharge Air Temperature limiting and automatic changeover. See the topic Advanced

options on page 37 for instructions to enable Discharge Air Temperature

limiting.

When connecting the controller to a fan powered VAV unit, the fan circuits must be compatible with the following specifications.

The fan start circuit is a 24 volt AC pilot duty output.

The fan speed output is 0-10 volts DC.

Submittal sheets for several variations of this application are available from the Resources page at www.SimplyVAV.com.

Illustration 6–2 BAC-8005 and BAC-8205 with three-stage reheat

Revision E 51

ON CTS

1 2

COMM READY

AI1

AI5

GND

AO4

AO3

BO8

BO5

BO6

BO7

24VAC

AI6

GND

AI7

T-STAT/

SENSOR

-A

EOL

BACnet MS/TP

Fan Speed 0-10 VDC

Duct

Temp

Sensor

Analog

Heat

24VAC Fan start

24 VAC Class 2

Section 6: Application drawings SimplyVAV

Modulating reheat

This application is for a BAC-8005 or BAC-8205 controller. The modulating option for reheat can control either an electric reheat unit with an analog input or a modulating hot water valve. The analog reheat output at output terminal AO3 varies between 0 and 10 volts DC.

For cooling and heating, a duct temperature sensor is required for Discharge Air Temperature limiting and automatic changeover. See the topic Advanced

options on page 37 for instructions to enable Discharge Air Temperature

limiting.

When connecting the controller to a fan powered VAV unit, the fan circuits must be compatible with the following specifications.

The fan start circuit is a 24 volt AC pilot duty output.

The fan speed output is 0-10 volts DC.

Submittal sheets for several variations of this application are available from the Resources page at www.SimplyVAV.com.

Illustration 6–3 Modulating reheat

52 Revision E

ON CTS

1 2

COMM READY

AI1

AI5

GND

AO4

AO3

BO8

BO5

BO6

BO7

24VAC

AI6

GND

AI7

T-STAT/

SENSOR

-A

EOL

BACnet MS/TP

Fan

Speed

Duct

Temp

Sensor

24VAC

Fan start

24 VAC

24VAC THERMAL

ACTUATOR

SimplyVAV Section 6: Application drawings

Time proportional reheat

This application is for a BAC-8005 or BAC-8205 controller. The time proportional reheat option is typically used in hydronic systems with a hot water reheat coil and a wax top control valve.The reheat output is a triac that can switch up to 1ampere at 24volts AC.

For cooling and heating, a duct temperature sensor is required for Discharge Air Temperature limiting and automatic changeover. See the topic Advanced

options on page 37 for instructions to enable Discharge Air Temperature

limiting.

When connecting the controller to a fan powered VAV unit, the fan circuits must be compatible with the following specifications.

The fan start circuit is a 24 volt AC pilot duty output.

The fan speed output is 0-10 volts DC.

Submittal sheets for several variations of this application are available from the Resources page at www.SimplyVAV.com.

Illustration 6–4 Time proportional reheat

Revision E 53

ON CTS

1 2

COMM READY

AI1

AI5

GND

AO4

AO3

BO8

BO5

BO6

BO7

24VAC

AI6

GND

AI7

T-STAT/

SENSOR

-A

EOL

BACnet MS/TP

Fan

Speed

Duct

Temp

Sensor

24VAC

Fan start

24 VAC

Open Close

Common

Section 6: Application drawings SimplyVAV

Floating reheat

This application is for a BAC-8005 or BAC-8205 controller. Use the floating reheat option in hydronic systems that are controlled by an actuator with tristate inputs. The reheat outputs are triacs that can switch up to 1ampere at 24volts AC.

For cooling and heating, a duct temperature sensor is required for Discharge Air Temperature limiting and automatic changeover. See the topic Advanced

options on page 37 for instructions to enable Discharge Air Temperature

limiting.

When connecting the controller to a fan powered VAV unit, the fan circuits must be compatible with the following specifications.

The fan start circuit is a 24 volt AC pilot duty output.

The fan speed output is 0-10 volts DC.

Submittal sheets for several variations of this application are available from the Resources page at www.SimplyVAV.com.

Illustration 6–5 Floating reheat

54 Revision E

ON CTS

1 2

COMM READY

AI1

AI5

GND

AO4

AO3

BO8

BO5

BO6

BO7

24VAC

AI6

GND

AI7

T-STAT/

SENSOR

-A

EOL

BACnet MS/TP

COM

CCW

24VAC

P OUT

MOTOR

F.B.

POT

24 VAC

BAC-8007

TSP-8001

SimplyVAV Section 6: Application drawings

Dual-duct application

This application is for a BAC-8007 controller. The controller is configured for dual-duct operation. Dual-duct VAV requires a TSP-8001 actuator to be used with the BC-8007 as shown in the illustration Dual-duct wiring diagram on

page 55.

Submittal sheets for several variations of this application are available from the Resources page at www.SimplyVAV.com.

Illustration 6–6 Dual-duct wiring diagram

Revision E 55

Section 6: Application drawings SimplyVAV

56 Revision E

SimplyVAV

S e c t i o n 7 : Se qu e n c e s o f o pe r a tio n

Topics in this section cover the sequences of operation for the SimplyVAV controllers. These are advanced topics for control technicians and engineers.

These sequences of operation are descriptions of each major component of the SimplyVAV programming. They are provided as an aid to understanding on how the controllers operate.

This section covers the following sequences of operation.

Input sources Occupancy sequence Space setpoints PID control loops Airflow setpoints sequence Changeover Discharge Air Temperature (DAT) limiting System diagnostics Damper operation Fan operation Reheat sequence Balancing airflow sequence Dual duct

58 59 60 61 61 62 62 64 65 65 66 69 69

Revision E 57

Section 7: Sequences of operation SimplyVAV

Input sources

The SimplyVAV controllers require specific sensors to measure room temperature, airflow, and discharge air temperature. All sensors are automatically detected and the programming is automatically set up for the sensors.

SimplyVAV digital wall sensors

STE-6000 series thermistor temperature sensors

Discharge air temperature sensor

Airflow sensors and pickups

SimplyVAV digital wall sensors—The SimplyVAV digital wall sensors

include a room temperature sensor, a digital display, and a push button interface for entering setpoints and configuring the controllers. If a SimplyVAV digital wall sensor is detected, the sensor's temperature is mapped to the Space Temperature Reference value object as the temperature input value. See the topic BACnet objects on page 77 for additional information on value objects.

The model BAC-8201 SimplyVAV digital wall sensor includes also a motion sensor to detect when the zone is temporary unoccupied. This is described in the topic Occupancy sequence on page 59.

STE-6000 series thermistor temperature sensors—There are three models

of the STE-6000 series sensors compatible with the SimplyVAV controllers. If one of the three sensors is detected, the sensor's temperature is mapped to the Space Temperature Reference value object as the temperature input value. See the topic BACnet objects on page 77 for additional information on value objects.

The STE-6014 and STE-6017 includes also a dial for adjusting the zone setpoint. If either of these two sensors is detected, the space setpoint is determined directly from the setting of the dial on the sensor.

The STE-6017 includes a button that when pushed will override the unoccupied state. This is described in the topic Occupancy sequence on page

59.

Discharge air temperature sensor—The DAT sensor is an optional Type-III,

10 kΩ thermistor and is required for VAV heating applications. If the controller detects that this sensor is connected, then the controller will use discharge air temperature to determine when to change between heating and cooling. The DAT sensor input is used also to control reheat. See the topics

Discharge Air Temperature (DAT) limiting on page 62 and Changeover on page

62.

Airflow sensors and pickups—VAV airflow is calculated by measuring the

high and low duct pressures with the built-in airflow sensor which is connected to airflow pickup tubes. The high and low pressure measurements

58 Revision E

SimplyVAV Section 7: Sequences of operation

along with the K-factor of the VAV terminal unit are used to calculate the airflow through the VAV unit.

Occupancy sequence

A SimplyVAV controller is designed to operate as a stand-alone controller and determine occupancy based only on the availability of primary airflow and motion in the zone. The controller can be in any one of the following occupancy states.

Occupied on page 59

Unoccupied

Standby

Occupancy can also be commanded by another BACnet device or an operator workstation connected the building automation network. See the topic System

integration and networking on page 71 for details.

Automatic occupancy

If Automatic Occupancy is enabled, the controller will automatically toggle between Unoccupied, Occupied, and Standby based on the presence of primary airflow and motion in the zone.

The default for Automatic Occupancy is Disabled. See the topic Advanced

options on page 37 to change Automatic Occupancy.

Occupied

For controllers without a connected motion sensor, the controller changes to

Occupied upon the detection of primary airflow.

Controllers with a connected motion sensor change to Occupied upon the detection of primary airflow and motion in the space. The unit will remain in the Occupied state as long as periodic motion is detected and primary airflow continues. If motion stops, the controller changes to Standby.

Unoccupied

The controller Occupancy mode changes to Unoccupied when it detects a loss of primary airflow. While in the Unoccupied state, the controller will fully open the damper in an attempt to reach the maximum airflow setpoint.

Loss of primary airflow is defined as less than 25% of the requested flow for at least 5 minutes. The Occupancy mode changes to Occupied or Standby once the actual airflow is at least 30% of the requested flow.

Standby

In units with a connected motion sensor, the controller starts in Standby and changes to Occupied after detecting motion in the space. Motion in the space is

Revision E 59

Section 7: Sequences of operation SimplyVAV

defined as two movements detected within 5 minutes. The controller will change back to Standby after a lack a lack of motion for the period specified by the variable Standby Time.

Standby mode is not valid for controllers without a motion sensor, unless commanded by a building management system.

Space setpoints

There are four temperature setpoints each for heating and cooling for a total of eight setpoints.

Active cooling

Occupied cooling

Unoccupied cooling

Standby cooling

Active heating

Occupied heating

Unoccupied heating

Standby heating

Types of setpoints

The SimplyVAV controllers may use any of the following setpoints based on a user entered setpoint or the state of occupancy and standby which is described in the topic Occupancy sequence on page 59.

Active setpoint—The active setpoint is the current setpoint. The active

setpoint is determined by the following.

If the space is occupied, the controller uses the occupied setpoint as the active setpoint.

If the space is unoccupied the controller uses the unoccupied setpoint as the active setpoint.

If controller occupancy is Standby, the controller calculates the standby setpoint.

A user with Password 1 can enter an active setpoint from a SimplyVAV digital wall sensor. This entry will change the occupied setpoint within the setpoint limits.

If a sensor with a dial setpoint is connect to the controller, the dial position is used for the active setpoint only when the Occupancy stae is

Occupied.

Occupied setpoint—A temperature setpoint entered by the controls

technician during controller setup and system commissioning. This is the setpoint used when the controller is occupied which is determined by primary airflow and, on controllers equipped with motion sensors, motion in the zone.

Unoccupied setpoint—A temperature setpoint entered by the controls

technician during controller setup and system commissioning. This is the setpoint used when the system is unoccupied .

60 Revision E

SimplyVAV Section 7: Sequences of operation

Standby setpoint—The standby setpoint is used when the controller is in the

standby state. It is a value calculated from the occupied setpoint and the value of Standby Offset. The standby offset value is entered by the controls technician during controller setup and system commissioning. See the topic

Occupancy sequence on page 59.

Setpoint limits

The programming in the SimplyVAV controller limits the setpoint entry so that no heating setpoint is set higher than its corresponding cooling setpoint.

If a user is adjusting a setpoint and it falls within the range set by the value of Minimum Setpoint Differential, the corresponding setpoint will be changed to maintain the differential. For example, the Minimum Setpoint Differential is 4°F and the Occupied Heating setpoint is 70°F. If the user lowers the Occupied Cooling setpoint to 71°F, the controller recalculates the Occupied Heating setpoint and changes it to 67°F.

PID control loops

Airflow setpoints sequence

A PID control loop calculates an error value from the difference between the measured room temperature and the active setpoint. The error value is expressed as a percentage and is typically used in a BAS controller to control the state of an output. When the difference between the setpoint and room temperature is large, the error is large. As the system reduces the difference between the setpoint and space temperature, the error becomes smaller.

The SimplyVAV controllers use up to three PID loops.

The heating PID loop.

The cooling PID loop.

The discharge air temperature (DAT) loop.

For SimplyVAV controllers, the output of either the cooling and heating PID loop is used to calculate the position of the damper. If present, the DAT input and DAT loop controls the Reheat loop.

The PID loops in the SimplyVAV controllers are standard BACnetobjects and are described in the topic BACnet objects on page 77.

Airflow Setpoint is calculated based on the demand for cooling or heating depending on whether the Cooling loop or Heating loop is greater than zero.

If no room sensor is connected to the controller, the controller uses the Minimum Cooling Airflow setpoint to maintain airflow.

Cool Air Sequence

Airflow Setpoint is proportionally calculated between Minimum Cooling Airflow and Maximum Cooling Airflow.

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As the Cooling loop increases from 0% to 100%, Primary

Section 7: Sequences of operation SimplyVAV

If there is a call for reheat to maintain room temperature, the primary airflow is set to the value of Auxiliary Flow.

Changeover

Discharge Air Temperature (DAT) limiting

Warm Air Available

from 0% to 100%, Primary Airflow Setpoint is proportionally calculated between Minimum Heating Airflow and Maximum Heating Airflow.

See also the topics, Changeover on page 62 and Input sources on page 58.

The Discharge Air Temperature input is used by the controller to determine the type of air that is being supplied by the AHU. The sensor is required for applications that require automatic change over between cooling and heating.

When the Heating loop is inactive, the Discharge Air Temperature input is compared to the SAT Changeover Temp. If the Discharge Air Temperature is below the SAT Changeover Temp minus 2°, the SAT Changeover Mode is set to Cool. If the Discharge Air Temperature is above the SAT Changeover Temp plus 2° Fahrenheit, the SAT Changeover Mode is set to Heat. The default changeover temperature is 74° Fahrenheit.

See the topic Discharge Air Temperature (DAT) limiting on page 62 and Input

In the heating mode, as the Heating Loop increases

sources on page 58.

A Discharge Air Temperature senor and DAT limiting is required to control VAV units with reheat. If a Discharge Air Temperature (DAT) sensor is detected and DAT Limiting is enabled, the VAV terminal will be controlled by the DAT loop. The unit will also limit the Discharge Air Temperature to within 15° F of the Space Temp Reference.

When there is a call for heat and the primary air is cool air, the reheat outputs are directly controlled by the DAT Loop and the DAT Setpoint reset based on the output of the Heating loop. As the Heating loop increases from 0% to 50%, DAT Setpoint is proportionally calculated between Space Temp Reference and Space Temp Reference + 15° F up to maximum 90° F. This allows the reheat to be controlled by the DAT loop over the first 50% of a call for heating.

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HTG SP

HTG SPAN

50%

100%

ROOM TMP

DAT loop

ROOM TMP+

15°

(Max 90°F)

SimplyVAV Section 7: Sequences of operation

Illustration 7–1 DAT limiting operation

If DAT Limiting is enabled, and a DAT sensor is not connected, the controller will lockout reheat control only in the cooling mode. The unit will operate this way until a DAT sensor is detected or until the unit is commanded to control to the Active Heating Setpoint by a supervisory BMS.

If the unit has detected a DAT sensor and DAT Limiting is not enabled, the unit’s reheat is controlled by the Heating loop instead of the DAT loop.

See also the topics Changeover on page 62 and Input sources on page 58.

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Section 7: Sequences of operation SimplyVAV

System diagnostics

The controller programming includes four system diagnostic indicators in the form of BACnet value objects.

Need for higher static pressure

Need for cooler supply air

Need for warmer supply air

Need AHU start

These diagnostic indicators or flags are monitored by other BACnet devices connected to the same building automation system as the controller. How the indicators are used is beyond the scope of these instructions.

Need for higher static pressure

The Need Higher Static value object is set to

True (1) when the damper is fully open and airflow cannot reach the required

setpoint value.

Need for cooler supply air

The Need Cooler Supply value object is set to

True (1) when the damper is fully open and the Cooling loop is greater than

95% for 30 minutes. The indicator changes to False (0) when the Cooling loop falls below 90%.

Need for warmer supply air

The Need Warmer Supply value object is set to

True (1) when the damper is fully open and the Heating loop is greater than

95% for 30 minutes. The indicator changes to False (0) when the Heating loop falls below 90%.

Need AHU start

of the following conditions.

The system mode is Unoccupied and the Cooling loop or the Heating loop reaches 100%.

The system mode is Occupied.

The system mode is Standby.

The Need for AHU Start object changes to False (0) when both loops drop below 5%.

The Need AHU Start value object is set to True (1) for any

64 Revision E

UNOCCUPIED/

STANDBY

MAX FAN SPEED

MIN FAN SPEED

FAN OFF

OCCUPIED

HTG SP ROOM TEMP INCREASE

SimplyVAV Section 7: Sequences of operation

Damper operation

Fan operation

Damper movement is determined by comparing the actual airflow reading to the airflow setpoints. If the actual airflow is within 5% of the setpoint, no damper action is initiated. Once within the 5% deadband, the actual airflow must be outside a 7% deadband before damper position changes.

The SimplyVAV controllers support both series and parallel fan powered VAV units. For either type of fan operation, the fan is controlled through the following terminals.

A binary output triac controls a 24-volt fan starting circuit. See the topic

Configuring the VAV Box options on page 31 for the procedure to

configure the controller for a fan.

A 0-10 volt DC analog output controls the speed of the fan. The output controls fan speed at either Min Fan Speed or Max Fan Speed. See the topic Set the airflow setpoints on page 34 for the procedure to set the fan speeds.

If the VAV unit is not configured for a fan, the two outputs are not used and remain inactive regardless of the occupancy state.

Series Fan

If the controller is configured for a series fan, any time the Occupancy mode of the controller is set to either Occupied or Standby, the fan runs continuously. The fan speed is set to Maximum Fan Speed when the state is

Occupied and set to Minimum Fan Speed when the state is Standby.

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When the Occupancy state is Unoccupied, the fan starts and runs at minimum speed only on a call for heating. The fan starts when the Heating loop is greater than 5% and stops when the Heating loop is less than 1%.

Illustration 7–2 Series fan operation

MAX FAN SPEED

MIN FAN SPEED

FAN OFF

OCCUPIED

HTG SP ROOM TEMP INCREASE

UNOCCUPIED/

STANDBY

Section 7: Sequences of operation SimplyVAV

Parallel Fan

If the controller is configured for a parallel fan, any time the Occupancy mode of the controller is set to either Occupied or Standby and there is a call for heat, the fan runs continuously. The fan starts when the Heating loop is greater than 5% and stops when the Heating loop is less than 1%.

When the unit Occupancy state is Unoccupied, the fan starts and runs at minimum speed only on a call for heating. The fan starts when the Heating loop is greater than 5% and stops when the Heating loop is less than 1%.

Illustration 7–3 Parallel fan operation

Reheat sequence

The SimplyVAV controllers can control four types of reheat installations.

Modulating reheat

Staged reheat

Time proportioned reheat

Floating reheat

All reheat is controlled by either the Heating loop or the Discharge Air Temp Limiting (DAT) PID loop. Loops are described in the topic PID control loops

on page 61.

If Discharge Air Temp Limiting is enabled, reheat is controlled by the DAT PID loop.

If DAT control is not enabled, reheat is controlled by the Heating loop.

In the following descriptions, the loop controlling reheat is referred to as the Reheat loop.

Modulating reheat

If the controller is configured for modulating reheat, it controls an analog reheat unit with 0-10 volts DC at the analog reheat output. On a call for

66 Revision E

Room temp increase

HTG SP-2F

HTG SPAN

loop %

100

HTG %

Reheat

SimplyVAV Section 7: Sequences of operation

reheat, the reheat output is modulated over the span of the Reheat loop. If the Reheat loop is less than 10%, the reheat output remains at zero. The reheat is set to zero if the Cooling loop is active.

See the topic Modulating reheat on page 52 for an application drawing.

Illustration 7–4 Modulating reheat operation

Staged reheat

If the controller is configured for staged reheat, it can control up to three stages of reheat through binary triac outputs. The reheat outputs are commanded On when the Reheat loop rises above the On threshold and Off when the loop drops below the Off threshold. Thresholds are described in the following chart, Staged reheat thresholds on page 67.

See the topic Staged reheat on page 51 for an application drawing.

Table 7–1 Staged reheat thresholds

Output state

Heating stages

On threshold Off threshold

Stage 1 35% 15%

Stage 2 65% 45%

Stage 3 95% 75%

Time proportioned reheat

For controllers configured for time proportional reheat, the duty cycle of a binary triac output varies over a 10 second period. For example, if the Reheat

Revision E 67

Room temp increase

HTG SP-2F

HTG SPAN

loop %

100

HTG %

Reheat

HTG %

DRIVE

OPEN

DRIVE

CLOSED

loop %

100

Reheat

HTG SP

HTG SPAN

-2F

Room temp increase

NO ACTION

Section 7: Sequences of operation SimplyVAV

loop is at 50%, the reheat output is On for 5 seconds and Off for 5 seconds. If the Reheat loop is less than 10%, the reheat output remains at zero.

See the topic Time proportional reheat on page 53 for an application drawing.

Illustration 7–5 Time proportional reheat operation

Floating reheat

If the controller is configured for floating reheat, it controls two binary triac outputs to drive the inputs of a tri-state actuator connected to a valve. If the Reheat loop is less than 30%, the valve is driven closed. If the loop is greater than 70%, the valve is driven open. If the loop is in between 30% and 70%, no valve action is taken.

See the topic Floating reheat on page 54 for an application drawing.

Illustration 7–6 Floating reheat operation

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SimplyVAV Section 7: Sequences of operation

Balancing airflow sequence

Balancing airflow is the process of calibrating the internal airflow sensor to a known standard. In the field, airflow is measured with an airflow hood or other measuring instrument and then compared to the airflow measurements from the sensor in the controller. The balancing process uses an STE-8001 or STE-8201 as the technicians setup tool for initiating the balancing sequence and entering actual flow measurements.

When the balancing sequence starts, all other functions of the controller are locked out.

At the start of the sequence, the controller drives the damper open until the airflow reaches the highest value of either the cooling or heating maximum airflow setpoints. An airflow measurement is made with an airflow hood and the actual airflow value is entered into the controller. Once the actual airflow is entered, the controller drives the damper closed to the lower value of either the cooling or heating minimum airflow. Another measurement is made with the flow hood and that measurement is entered into the controller.

After the minimum airflow measurement is entered, the programming in the controller calculates airflow correction factors which are used to adjust measurements from the internal airflow sensor. Balancing is complete and the controller is returned to normal operation.

See the topic Balancing airflow on page 43 for the procedure to balance the airflow with an STE-8001.

Dual duct

A dual duct installation consists of separate primary heating and cooling ducts, both with control dampers and airflow monitoring. For this type of installation a SimplyVAV BAC-8007 controls the cooling air (primary) damper and a TSP-8001 actuator controls the heating air (secondary) damper.

As the space temperature rises above the cooling setpoint, the primary airflow is modulated from the Cooling Minimum flow to the Cooling Maximum Flow.

As the space temperature falls below the heating setpoint, the secondary airflow is modulated from the Heating Minimum flow to the Heating Maximum Flow.

Between the heating and cooling setpoints, both the primary airflow and secondary airflow are modulated to maintain the Dual Duct Minimum airflow.

See the topic, Dual-duct application on page 55 for an application drawing.

Revision E 69

Max. cooling airflow

Airflow increase

Max heating airflow

Dual duct

minimum

airflow

Room temp increase

HTG SPAN CLG SPAN

HTG SP CLG SP

MIN CLG

CFM

MIN HTG CFM

Section 7: Sequences of operation SimplyVAV

Illustration 7–7 Dual duct sequence

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SimplyVAV

S e c t i o n 8 : Sy st e m in te g r at io n a n d ne tw o r k in g

Topics in this section cover integrating the controllers into a building automation network. These are advanced reference topics for control technicians and engineers.

The controllers can be installed as standalone controllers or they can be connected to a BACnet MS/TP network. The topics in this section are reference material for control technicians or engineers who are planning, installing, and setting up controllers that are connected to a network.

In addition to the information in this section, you will also need the following information.

Detailed plans and drawings for the building automation system.

Information about the facility LAN including routers, switches, and network firewalls.

Sequences of operation for other BACnet devices that will monitor or interact with SimplyVAV controllers.

Integration topics

Connecting to an MS/TP network Setting up network communications BACnet objects

72 75 77

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ONCTS

1 2

COMM READY

AI1

AI5

GND

AO4

AO3

BO8

BO5

BO6

BO7

24VAC

AI6

GND

AI7

T-STAT/

SENSOR

-A

EOL

BACnet MS/TP

-A

1 2

ONCTS

1 2

COMM READY

AI1

AI5

GND

AO4

AO3

BO8

BO5

BO6

BO7

24VAC

AI6

GND

AI7

T-STAT/

SENSOR

-A

EOL

BACnet MS/TP

-A

1 2

ONCTS

1 2

COMM READY

AI1

AI5

GND

AO4

AO3

BO8

BO5

BO6

BO7

24VAC

AI6

GND

AI7

T-STAT/

SENSOR

-A

EOL

BACnet MS/TP

-A

1 2

End of line controller with grounded shield

EOL switches ON

Mid line controller

EOL switches OFF

End of line controller with open shield

EOL switches ON

Section 8: System integration and networking SimplyVAV

Connecting to an MS/TP network

SimplyVAV controllers are BACnet MS/TP compliant controllers. Connect them only to a BACnet MS/TP network.

To enter the BACnet device instance, MAC address, and network baud, see the topic Setting up network communications on page 75.

Illustration 8–1 MS/TP network wiring and EOLswitches

Connections and wiring

Use the following principles when connecting a controller to an MS/TP network:

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SimplyVAV Section 8: System integration and networking

Connect no more than 128 addressable BACnet devices to one MS/TP network. The devices can be any mix of controllers or routers.

To prevent network traffic bottlenecks, limit the MS/TP network size to 60 controllers.

Use twisted pair, shielded cable with capacitance of no more than 51picofarads per foot for all network wiring. Belden cable model #82760 meets the cable requirements.

Connect the -A terminal in parallel with all other - terminals.

Connect the +B terminal in parallel with all other + terminals.

Connect the shields of the cable together at each mid line controller. For SimplyVAV controllers use the S terminal.

Connect the shield to an earth ground at one end only.

Use a KMD–5575 repeater between every 32 MS/TP devices or if the cable length will exceed 4000 feet (1220 meters). Use no more than four repeaters per MS/TP network.

Place a KMD–5567 surge suppressor in the cable where it exits a building.

End of line termination switches

The controllers on the physical ends of the EIA-485 wiring segment must have end of line termination added for proper network operation.

For controllers at the end of the network set the EOL switches to On

For mid line controllers at the end of the network set the EOL switches to Off

Network bulbs

SimplyVAVcontrollers include network bulbs located near the MS/TP network connector. These bulbs serve three functions:

Removing both bulbs will disconnect the controller from the MS/TP network.

If one or both bulbs are lit, it indicates the network connection or controller power is not properly wired.

If the voltage or current on the network exceeds safe levels, the bulbs may open and protect the controller from damage.

Bulbs are illuminated

network is not phased correctly. The ground potential of the controller is not the same as other controllers on the network. The brighter the isolation bulbs on a controller are illumniated, the closer that controller is to the source of the problem. Remove power and check the network and power connections.

If one or both bulbs are illuminated, it indicates the

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Section 8: System integration and networking SimplyVAV

Bulbs are open

meter—it indicates the voltage or current on the network exceeded safe levels. Correct the conditions and replace the bulbs.

Bulbs not inserted correctly

inserted into the socket.

If one or both bulbs are open—as tested with an ohm

One lead from one or both of the bulbs are not

74 Revision E

12S1

PSW2

OOOO

Set

Point

CNFG

COMM

Set

Point

Set

Point

D ID

OO72O69

Set

Point

MAC

SimplyVAV Section 8: System integration and networking

Setting up network communications

Table 8–1 Procedure to set up network communications

Set the network communication settings before placing a controller on the network. Setting network settings requires entering Password 2 which is described in the topic Getting started with configuration on page 26.

Procedure Detailed steps STE display

1 Starting display

2 Select the CNFG display

Start at the temperature display.

Press the and buttons together.

l If Password 2 is not required, the display

changes to CNFG.

l If required, enter Password 2. The display

changes to CNFG when Password 2 is correct.

From the CNFG display, press the or buttons to advance to the COMM display.

3 Enter the device instance.

4 Enter the MAC address.

Press the

button. The display changes to

DID.

Press the or buttons to change the first digit.

Press the Repeat for all seven digits.

When the digit, the display changes to MAC.

Press the or buttons to change the MAC address.

Press the address.

The display changes to BAUD.

button to select the next digit.

button is pressed for the last

button to save the selected MAC

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Set

Point

BAUD

384OO

Set

Point

COMM

Section 8: System integration and networking SimplyVAV

Procedure to set up network communications (continued)

Procedure Detailed steps STE display

5 Enter the baud

Press the or buttons to select a new baud.

Press the

button is save the selected baud.

The display returns to COMM.

6 Advance or exit

Press the or buttons to select one of the following:

BLNC or CNFG options EXIT to return to the temperature display.

Press the

button to select the next function.

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Caution

SimplyVAV Section 8: System integration and networking

BACnet objects

The SimplyVAV controllers are BACnet Application Specific Controller (ASC) that are composed of standard BACnet objects. This section lists the objects that are likely to be monitored by a standard BACnet operator workstation to verify system operation.

Changing the configuration of any object may result in unpredictable operation of a controller and damage to equipment that is under control of a SimplyVAV controller.

Input objects

The following BACnet input objects represent values at the physical inputs of the controller. For wiring details, see the topic Application drawings on page

49.

Table 8–2 Input objects

Input Name Description Object type

AI1 DISCHARGE AIR Discharge Air Temperature KMC10K_Type_III

AI2 SPACE SENSOR Space Sensor KMC Type II Deg F

AI3 SPACE

SETPOINT

AI4 PRIMARY DUCT Primary Duct Pressure

AI5 SECONDARY

DUCT

Space Setpoint TABLE_4

Secondary Duct Pressure

Output objects

The following BACnet output objects represent values at the physical outputs of the controller. For application specific output wiring details, see the topic

Application drawings on page 49.

Table 8–3 Output objects

Output Name Description Units

AO3 ANALOG HEAT Analog Heat 0_100%

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Section 8: System integration and networking SimplyVAV

Output objects (continued)

Output Name Description Units

AO4 FAN SPEED Fan Speed 0_100%

BO1 DAMPER CW Damper Clockwise

BO2 DAMPER CCW Damper Counter Clockwise

BO5 FAN Fan

BO6 HT STAGE 1 Heating Stage 1

BO7 HT STAGE 2 Heating Stage 2

BO8 HT STAGE 3 Heating Stage3

Value objects

BACnet value objects represent setpoints or other operational conditions in the controller.

Note: Not all objects are present in every model.

Table 8–4 Analog value objects

Object Name Description

AV1 SPACE TEMP Space Temperature

AV2 STPT REFERENCE Setpoint Reference

AV3 ACT COOL STPT Active Cooling Setpoint

AV4 ACT HEAT STPT Active Heating Setpoint

AV5 OCC CL STPT Occupied Cooling Setpoint

AV6 OCC HT SPT Occupied Heating Setpoint

AV7 UNOCC CL STPT Unoccupied Cooling Setpoint

AV8 UNOCC HT STPT Unoccupied Heating Setpoint

AV9 MIN CL STPT Minimum Cooling Setpoint

AV10 MAX HT STPT Maximum Heating Setpoint

AV11 MIN STPT DIFF Minimum Setpoint Differential

AV12 STBY DIFF Standby Differential

AV13 MIN COOL FLOW Minimum Cooling Flow

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SimplyVAV Section 8: System integration and networking

Analog value objects (continued)

Object Name Description

AV14 MAX COOL FLOW Maximum Cooling Flow

AV15 MIN HEAT FLOW Minimum Heating Flow

AV16 MAX HEAT FLOW Maximum Heating Flow

AV17 AUXILLARY FLOW Auxillary Flow

AV18 PRI K FACT Primary K Factor

AV19 PRI CORR SLOPE Primary Correction Slope

AV20 PRI CORR OFFST Primary Correction Offset

AV21 PRI LO FLOW CORR Primary Low Flow Correction

AV22 PRI FLOW STPT Primary Flow Setpoint

AV23 PRI RAW FLOW Primary Raw Flow

AV24 PRI ACTUAL FLOW Primary Actual Flow

AV32 MIN FAN SPEED Minimum Fan Speed

AV33 MAX FAN SPEED Maximum Fan Speed

AV36 DAT STPT Discharge Air Temp Setpoint

AV37 SAT CHANGEOVER SAT Changeover Temperature

AV38 LOCAL OVRD TIME Local Override Timer

AV39 STANDBY TIME Standby Timer (motion)

AV40 STANDBY TRIGGER Standby Trigger

AV43 MEASURED MAX Measured Maximum

AV44 MEASURED MIN Measured Minimum

AV45 PRI SAVE MIN FLO Primary Saved Minimum Airflow

AV47 DAT MAXIMUM Maximum DAT Setpoint

AV48 CW DMP POS CW Damper Position

AV49 CCW DMP POS CCW Damper Position

AV50 DAMPER POSITION Damper Position

AV55 CHNG_OVER_DELAY Cooling Change Over Delay

AV56 LOW AUTO OCC Low Limit for Auto Occupy

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Section 8: System integration and networking SimplyVAV

Table 8–5 Binary value objcts

Object Name Description

BV1 NEED AHU Need For AHU

BV2 NEED COLDER SPLY Need For Colder Air Supply

BV3 NEED MORE STATIC Need For AHU

BV4 LOCAL OVRD Local Override Mode

BV5 MOTION OVRD Motion Override Mode

BV6 MOTION SENSOR Motion Sensor (Wall Stat)

BV7 NEED HOTTER SPLY Need For Hotter Air Supply

BV8 CHANGE OVER MODE SAT Changeover Mode

BV9 DAT LIMITING Discharge Air Temp Limiting

BV10 CLOCKWISE CLOSE Clockwise Close

BV11 AUTO OCCUPANCY Auto Occupancy Detection

BV12 BALANCE MODE Balance Mode

BV13 DAT SENSOR DAT Sensor Present

BV14 PRI BAL TRIGGER Primary Balance Trigger

Table 8–6 Multistate value objects

Object Name Description

MSV1 OCCUPIED MODE Occupied Mode

MSV2 FAN CONFIG Fantype Configuration

MSV3 REHEAT Reheat Type

MSV6 WALL SENSOR Multi-state Value #6

Loop objects

BACnet PID loops are used for modulating the damper and controlling reheat.

Table 8–7 PID control loop objects

Loop Name Description

LOOP1 CL LOOP Cooling Loop

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SimplyVAV Section 8: System integration and networking

PID control loop objects (continued)

Loop Name Description

LOOP2 HT LOOP Heating Loop

LOOP3 DAT Loop Discharge Air Temp Loop

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Section 8: System integration and networking SimplyVAV

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SimplyVAV Appendix A: K-factors

A p p e n d i x A : K -f ac to r s

To set up a VAV controller, a K-factor must be entered into the controller. Typically, this is part of the airflow chart that the manufacturer places on the VAV unit. If this information is missing and not available from the manufacturer, use the K-factor in the following chart.

Table A–1 Start point K factors

Duct size in inches K-factor

4 265

5 357

6 460

7 652

8 890

9 1145

10 1143

12 1972

14 2771

16 3741

20 2106

22 2106

26 2498

40 7176

24 x 16 6980

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Appendix A: K-factors SimplyVAV

84 Revision E

SimplyVAV

In de x

accessories 11 actuator

mounting 17 rotation limits 16 shaft size 7 specifications 7 speed 7

airflow

balancing 43 maximum limit 34 minimum limit 34 sensor 18 setting limits 34

applications 49

cooling only without reheat 50 cooling/heating without reheat 50 dual duct 55 floating reheat 54 modulating reheat 52 staged reheat 51 three-stage reheat 51 time proportional reheat 53

automatic occupancy

enabling 37 sequence 59

auxillary flow

sequence 61 setting 34

BAC-8001

cooling only 50 cooling/heating 50

BAC-8005

floating reheat 54 modulating reheat 52 staged reheat 51

time proportional reheat 53 BAC-8007, dual-duct 55 BACnet objects 77

input 77

loops 80 outputs 77 PID loop sequence 61 value 78

balancing

procedure 43 sequence 69

baud 75 bulbs

network 72 replacement 11

calibration

airflow 43

sensors 37 Celsius display 40 changeover sequence 62 configuration 25 connecting

airflow sensor 18

DAT sensor 20

input devices 18

output devices 18

sensors 19

damper

sequence 65

setting direction to close 31 device instance 75 discharge air temperature

enabling 37

sensor connection 20 display units 40 dual duct

application drawing 55

sequence 69

end-of-line switches 72 end stops 16 English display 40

Fahrenheit display 40

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Index SimplyVAV

fans

configuration 31 parallel sequence 65 series sequence 65 setting speed 34 speed sequence 65 with floating reheat 54 with modulating reheat 52 with staged reheat 51 with time proportional reheat 53

floating reheat 54

occupied

sequence 59 temperature setpoints 27

outputs

as BACnet objects 77 connecting 18 specifications 7

override

sequence 58 setting time 37

inputs

as BACnet objects 77 connecting 18 DAT sensor 20 room sensors 19 specifications 7

installing the controller 15

K-factor

setting 31 unknown 83

parallel fan

configuration 31 sequence 65

passwords

changing and establishing 37 Password 1 23 Password 2 26

PID loops

as BACnet objects 80 sequence of operation 61

MAC address 75 maintenance 22 Metric display 40 models 12 modulating reheat 52 motion sensing sequence 59 mounting 17 MS/TP wiring 72

network

address 75 baud 75 bulbs 72 termination 72 wiring 72

reheat

configuration 31 floating 54 modulating 52 sequences of operation 66 staged 51 three-stage 51 time proportional 53 two-stage 51

replacement parts 11 restore application 40 rotation limits 16

sensors

airflow 18 calibration 37 compatible 11 connecting 19 DAT sensor 20

86 Revision E

SimplyVAV Index

room sensors 19 sequence 58

sequences of operation 57

airflow setpoints 61 balancing 69 changeover 62 damper 65 DAT limiting 62 dual duct 69 fans 65 input sources 58 motion detection 59 occupancy 59 PID loops 61 sensors 58 setpoints 60 standby 59 system diagnostics 64 unoccupied 59

series fan 65

configuration 31 sequence 65

setpoints

limits sequence 60 room temperature sequence 60 sequence 60 setting

changeover 27 limits 27 occupied 27 room 23

standby 27 shaft size for actuator 7 specifications 7 standby

sequence 59

setting timer 37 submittal sheets 49 system diagnostics 64

tri-state reheat 54 two-stage reheat 51

units to display 40 unoccupied

sequence 59 temperature setpoints 27

value objects 78

wiring

application drawings 49 connecting power 21 DAT sensor 20 MS/TP network 72 room sensors 19

three-stage reheat 51 time proportional reheat 53 timers, setting 37 transformer wiring 21

Revision E 87

Index SimplyVAV

88 Revision E

KMC Controls BAC-8007 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

C o n t e n t s

S e c t i o n 1 : A b o u t th e c o n t r o ll e r s

Specifications

Accessories and replacement parts

Available models

Safety considerations

S e c t i o n 2 : In st all in g t h e c o nt r o ll e r s

Setting the rotation limits

Mounting on a VAV terminal box

Connecting an airflow sensor

Connecting inputs and outputs

Connecting room temperature sensors

Connecting a DAT sensor

Connecting power

Maintenance

S e c t i o n 3 : Ch an g in g th e r o o m se t po i n t

S e c t i o n 4 : Co n f ig u r in g t h e c o n t r o ll e r s

Getting started with configuration

Entering system temperature setpoints and limits

Configuring the VAV Box options

Set the airflow setpoints

Advanced options

Restore Application

S e c t i o n 5 : B ala nc i ng ai r fl o w

S e c t i o n 6 : A p p lic a tio n dr a w in g s

Cooling or heating without reheat

Staged reheat

Modulating reheat

Time proportional reheat

Floating reheat

S e c t i o n 7 : Se qu e n c e s o f o pe r a tio n

Input sources

Occupancy sequence

Unoccupied

Standby

Automatic occupancy

Occupied

Space setpoints

Types of setpoints

Setpoint limits

PID control loops

Airflow setpoints sequence

Changeover

Discharge Air Temperature (DAT) limiting

System diagnostics

Damper operation

Fan operation

Series Fan

Parallel Fan

Reheat sequence

Modulating reheat

Staged reheat

Time proportioned reheat

Floating reheat

Balancing airflow sequence

Dual duct

S e c t i o n 8 : Sy st e m in te g r at io n a n d ne tw o r k in g

Connecting to an MS/TP network

Connections and wiring

End of line termination switches

Network bulbs

Setting up network communications

BACnet objects

Input objects

Output objects

Value objects

Loop objects

SimplyVAV Appendix A: K-factors

In de x