KMC Controls SimplyVAV BAC-8001, SimplyVAV BAC-8205, SimplyVAV BAC-8005, SimplyVAV BAC-8007 Application And Installation Manual

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SimplyVAV

Application and Installation Guide

Revision H

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KMC Controls, Inc.

NetSensor, WinControl, and the KMC logo are registered trademarks of KMC Controls, Inc.

AppStat, BACstage, FlexStat, FullBAC, KMC Connect, KMC Connect Lite, KMC Converge, KMC Converge GFX, KMC Conquest, TotalControl, 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

info@kmccontrols.com

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SimplyVAV Contents

C o n t e n t s

Contents 3

Section 1: About the controllers 5

Specifications 6 Accessories and replacement parts 9 Available models 10 Safety considerations 10

Section 2: Installing the controllers 13

Setting the rotation limits 13 Mounting on a VAV terminal box 14 Connecting an airflow sensor 15 Connecting inputs and outputs 15 Connecting room temperature sensors 15 Connecting a DAT sensor 16 Connecting power 17 Maintenance 18

Section 3: Changing the room setpoint 19

Section 4: Configuring the controllers 21

Getting started with configuration 21 Entering system temperature setpoints and limits 23 Configuring the VAV Box options 27 Set the airflow setpoints 29 Advanced options 33 Restore Application 35

Section 5: Balancing airflow 37

Section 6: Application drawings 41

Cooling or heating without reheat 42 Staged reheat 43 Modulating reheat 44 Time proportional reheat 45 Floating reheat 46 Dual-duct application 47

Section 7: Sequences of operation 49

Input sources 49 Occupancy sequence 50

Automatic occupancy 50 Occupied 50 Unoccupied 51 Standby 51

Space setpoints 51

Types of setpoints 51

Setpoint limits 52 PID control loops 52 Airflow setpoints sequence 53 Changeover 53 Discharge Air Temperature (DAT) limiting 53

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Contents KMC Controls, Inc.

System diagnostic indicators 54

NEED AHU (BV1) 55 NEED COLDER SUPPLY (BV2) 55 NEED MORE STATIC (BV3) 55

NEED HOTTER SUPPLY (BV7) 55 Damper operation 55 Fan operation 56

Series Fan 56

Parallel Fan 56 Reheat sequence 57

Modulating reheat 58

Staged reheat 58

Time proportioned reheat 59

Floating reheat 59 Balancing airflow sequence 60 Dual duct 61

Section 8: System integration and networking 63

Connecting to an MS/TP network 63

Connections and wiring 64

End of line termination switches 64

Network bulbs 64 Setting up network communications 65 BACnet objects 67

Input objects 67

Output objects 67

Value objects 68

Loop objects 70

Appendix A: K-factors 71

Index 73

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SimplyVAV

Sec tion 1: About the cont roll er 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 networkaddressing, and balance airflow. All options can be set by using only an STE-8001 sensor which can be installed as the permanent room sensor ortemporarily 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 sensor without special software.

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

the following functions.

l Single duct heating and cooling VAV

l Automatic heating/cooling changeover including morning warmup

l Occupancy setback—requires STE-8201

l System diagnostic indicators

l Airflow balancing

BAC-8005 and BAC-8205 Models BAC-8005 and BAC-8205 are supplied with inputs,

outputs, and sequences of operation forthe following functions.

l Single duct heating and cooling VAV

l Modulating, floating, time proportional, and staged reheat

l Series and parallel fan control

l Automatic heating/cooling changeover including morning warmup

l Discharge air temperature limiting

l Occupancy setback—requires STE-8201

l Actuator position feedback fortrue damper positioning (BAC-8205 only)

l System diagnostic indicators

l Airflow balancing

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Section 1: About the controllers KMC Controls, Inc.

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

the following functions.

l Dual-duct VAV heating and cooling

l Occupancy setback—requires STE-8201

l System diagnostic indicators

l Airflow balancing

Additional topics in this section

Specifications 6 Accessories and replacement parts 9 Available models 10 Safety considerations 10

Specifications

SimplyVAV controller 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 41. For a detailed listing of input and output objects, see the

topic BACnet objects on page 67.

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 outputconnections see the section Application drawingson page 41.

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

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SimplyVAV Section 1: About the controllers

Binary outputs

Binary outputs are configured to represent BACnet binary output objects. No field configuration is required. For details on application specific outputconnections see the section Application drawingson page 41.

Key features Optically isolated triac output

Connector Screw terminals for wire size 12-26AWG

Output range Maximum switching 24 Volts AC

1 ampere per external output, 3 amperes total

Communications—BACnet MS/TP

l EIA–485 operating at rates up to 76.8 kilobaud.

l Removable screw terminal block.

l Wire size 12-26AWG

l Switch selected end of line termination

Memory

l Programs and program parameters are stored in nonvolatile memory.

l Auto restart on power failure

Air flow sensor features

l Configured as BACnet analog inputobject.

l CMOS differential pressure 0-2 inches of water (0-500 Pa) measurement range.

Internally linearized and temperature compensated.

l Span accuracy 4.5% of reading.

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

l 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) round or 3/8

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

60 sec./90° at 60 Hz

to 7/16 inch (9.5to11 mm) square damper shafts.

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Section 1: About the controllers KMC Controls, Inc.

Regulatory

l UL 916 Energy Management Equipment

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

l CE compliant

l 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 13.2ounces (376 grams)

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)

50/60 Hz

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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

SimplyVAV Section 1: About the controllers

Dimensions

Accessories and replacement parts

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

Power transformer

XEE-6111-50 Transformer, 120-to-24VAC, 50 VA, single-hub

XEE-6112-50 Transformer, 120-to-24VAC, 50 VA, dual-hub

XEE-6311-100 Transformer, 120, 277 -to-24 VAC, 50/60 Hz, 96 VA, dual-hub

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

STE-6017W80 Discrete temperature sensor with rotary setpoint dial, override

HPO-9005 Room Sensor Adapter

connector

button, RJ-45 connector

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Section 1: About the controllers KMC Controls, Inc.

Sensor cables

HSO-9001 Cable: Ethernet, 50 foot

HSO-9011 Cable: Ethernet, 50 foot, Plenum Rated

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 withoutairflow 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

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 BAC-8001

BACnet ASC: VAV Fan and Reheat, 40 in-lbs, 90second actuator BAC-8005

BACnet ASC: VAV Dual Duct, 40 in-lbs, 90second actuator BAC-8007

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

BAC-8205

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.

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Danger

Warning

Caution

SimplyVAV Section 1: About the controllers

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 KMC Controls, Inc.

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Caution

Position notch as shown

Stop position holes

Stop screw in storage

Rotate CW

SimplyVAV

Sec tion 2: Instal l ing the controllers

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

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.

Illustration 2–1 Controller rotation limit selections

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.

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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

Section 2: Installing the controllers KMC Controls, Inc.

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 of the recess.

Mounting on a VAV terminal box

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.

Note: SimplyVAV controllers are designed to directly mount to 3/8 to 5/8inch (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.

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

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ON CTS

1 2

COMM READY

24VAC

T-STAT/

SENSOR

-A

EOL

BACnet MS/TP

Total airflow (high) Static airflow (low)

SimplyVAV Section 2: Installing the controllers

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 9.

Connecting inputs and outputs

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

l For input and output connection information, see the topic Application drawingson

page 41.

l To connect room temperature sensors, see the topic Connecting room

temperature sensors on page 15

l To connect a DAT sensor, see the topic Connecting a DAT sensor on page 16.

l For the BACnet object descriptions of the inputs and outputs, see the topic BACnet

objects on page 67.

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.

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l STE-6010W80

l STE-6014W80

l STE-6017W80

l STE-8001W80

l STE-8201W80

Page 16

Ethernet cable

Maximum 75 feet

DAT sensor Prefered location

DAT sensor Changeover only

Section 2: Installing the controllers KMC Controls, Inc.

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

Connecting a DAT sensor

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

Illustration 2–5 Discharge air temperature sensor location

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COMM READY

AI1

GND

AO4

AO3

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

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.

l For DAT limiting and reheat, install the sensor in the airflow after the reheat unit. See

the topic, Advanced options on page 33 to enable discharge air temperature control.

l 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

Connecting power

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

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

l KMC Controls recommends powering only one controller from each transformer.

l 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 KMC Controls, Inc.

Maintenance

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

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Set

Point

12S1

Set

Point

PSW1

OOOO

SimplyVAV

Sec tion 3: Chan g i n g t h e r oom s et p oi nt

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

1. Press any button to begin changing setpoints.

2. If required, enter Password 1.

Press the up or down buttons to change a

3. setpoint value.

Press the

button to save the value or

advance to the next function.

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 Sensor display

1 Starting display

2 Enter Password 1.

Start from the temperature display.

1. Press any button. The display changes to PSW1.

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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.

Page 20

Set

Point

745

COOLING

Set Point

685

HEATING

Section 3: Changing the room setpoint KMC Controls, Inc.

Changing room setpoints (continued)

Procedure Steps Sensor display

3 Set the active cooling setpoint.

4 Set the active heating setpoint.

Press the or buttons to change the cooling

1. setpoint temperature. The setpoint changes in increments of 0.5 degrees.

Press the

button to save the value.

The display advances to set the heating setpoint.

Press the or buttons to change the heating

1. 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.

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SimplyVAV

Sec tion 4: Configuring the cont roll er 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 digital 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.

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

l An STE-8001 orSTE-8201 digital sensor to use as a configuration tool.

l 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 19.

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

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 21 Entering system temperature setpoints and limits 23 Configuring the VAV Box options 27 Set the airflow setpoints 29 Advanced options 33 Restore Application 35

Getting started with configuration

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

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

l A new Password 2 can be entered or changed in the advance functions. See the topic

Advanced options on page 33.

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12S1

Set

Point

PSW2

OOOO

CNFG

Section 4: Configuring the controllers KMC Controls, Inc.

Enter the configuration mode

Procedure Detailed steps Sensor display

1 Starting display

2 Enter Password 2.

1. 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

for all four digits.

4. When the button is pushed for the fourth correct digit,

the display changes to COMM.

button to select the next digit. Repeat

3 Select a configuration

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 at the

CNFG display.

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12S1

PSW2

OOOO

Set

Point

Set

Point

CNFG

STPT

MIN

68O

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.

l Minimum cooling and maximum heating setpoints

l Occupied and unoccupied cooling setpoints

l Occupied and unoccupied heating setpoints

l Changeover differential setpoint

l 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 21.

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

Procedure to set the temperature setpoints

Procedure Detailed steps Sensor display

1 Start at the temperature

display.

1. 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.

2 Select the setpoint display.

From the CNFG display, press the or buttons to

show STPT.

Press the

button to select the CNFG options. The

display changes to STPT.

Press the

button to select STPT. The display

changes to MIN.

3 Set the minimum cooling

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setpoint.

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

Page 24

Set

Point

Set

Point

MAX

78O

Set

Point

OCCL

74O

Set

Point

OCHT

7OO

Section 4: Configuring the controllers KMC Controls, Inc.

Procedure to set the temperature setpoints (continued)

Procedure Detailed steps Sensor display

Press the or buttons to set the minimum

1. cooling setpoint. The setpoint will change in 0.5° increments.

4 Set the maximum heating

setpoint.

5 Set the occupied cooling

setpoint.

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

1. 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

1. cooling setpoint. The setpoint will change in 0.5° increments.

Press the

button to save the setpoint and advance

to the next function.

6 Set the occupied heating

setpoint.

Note: This setpoint can also be changed as described in the topic Changing the room

setpoint on page 19.

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

Press the or buttons to set the occupied

1. 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 19.

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Set

Point

UNCL

8OO

Set

Point

UNHT

62O

Set

Point

CHNG

Set

Point

DIFF

Set

Point

SimplyVAV Section 4: Configuring the controllers

Procedure to set the temperature setpoints (continued)

Procedure Detailed steps Sensor display

7 Set the unoccupied cooling

setpoint.

8 Set the unoccupied heating

setpoint.

9 Set the supply air temperature

changeover setpoint.

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

Press the or buttons to set the unoccupied

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

Press the or buttons to set the unoccupied

1. 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.

Not used in all models.

10Set the minimum temperature

differential setpoint.

11Set the standby differential

setpoint.

Press the or buttons to set the changeover

1. setpoint. The setpointwill change in 1° increments.

Press the

button to save the setpoint and advance

to the next function.

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

Press the or buttons to set the differential

1. setpoint. The setpointwill 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

1. differential setpoint. The setpoint will change in 1° increments.

Revision H 25

Press the

2. to the next function.

button to save the setpoint and advance

Page 26

Set

Point

STPT

Section 4: Configuring the controllers KMC Controls, Inc.

Procedure to set the temperature setpoints (continued)

Procedure Detailed steps Sensor display

12Select a new configuration

function or exit.

Press the or buttons to select one of the

1. following:

l BOX, FLOW, ADVC, or RSTR options

l BACK to choose another configuration function.

l EXIT to return to the temperature display.

Press the

button to select the next function.

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Page 27

12S1

PSW2

OOOO

Set

Point

Set

Point

CNFG

STPT

BOX

9O4

PKFT

SimplyVAV Section 4: Configuring the controllers

Configuring the VAV Box options

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

l The K-factor for the VAV terminal unit. If the K-factor is not available, see the topic

K-factors on page 71.

l Reheat configuration (optional)

l Fan configuration (optional)

l 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 21.

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

Procedure to set the box functions

Procedure Detailed steps Sensor display

1 Starting display

2 Select the box settings display.

1. 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

show the BOX display.

Press the

display changes to STPT.

Press the or buttons to change the display to

BOX.

button to select the CNFG options. The

3 Set the primary VAV terminal

Revision H 27

unit K-factor.

Press the

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

button to select BOX.

Page 28

Set

Point

Set

Point

9O4

SKFT

Set

Point

NONE

REHT

Set

Point

NONE

FAN

Section 4: Configuring the controllers KMC Controls, Inc.

Procedure to set the box functions (continued)

Procedure Detailed steps Sensor display

Press the or buttons to set the primary K-

1. 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.

Press the

button to save the entry and 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-

1. factor.

Press the

button to save the entry and advance to

the next function.

Press the or buttons to choose one of the

1. following reheat options.

None—Reheat is not enabled.

Staged—Enables staged reheat.

Modulating—The analog reheat output varies from

0-10 volts DC.

6 Set the fan option.

Not used in all models.

Floating—The reheat outputs control a tristate actuator.

Time proportional—A 24-volt triac output controls a thermal wax valve.

Press the

button to save the reheat option and

advance to the next function.

Press the or buttons to choose one of the

1. following fan options.

None—No fan is connected to the controller.

Series—The VAV unit includes a series fan.

Parallel—The VAV unit includes a parallel fan.

Press the

button to save the fan option and

advance to the next function.

28 Revision H

Page 29

Set

Point

CCW

DDIR

Set

Point

BOX

SimplyVAV Section 4: Configuring the controllers

Procedure to set the box functions (continued)

Procedure Detailed steps Sensor display

7 Set the damper direction to

close.

8 Select a new configuration

function or exit.

Press the or buttons to which direction to

1. damper moves to close.

CCW—The actuator turns counterclockwise to close the damper.

CW—The actuatorturns clockwise to close the damper.

Press the

button to save the damper option and

advance to the next function.

Press the or buttons to select one of the

1. following:

l STPT, FLOW, ADVC. or RSTR options

l BACK to choose another configuration function

l EXIT to return to the temperature display.

Press the

button to select the next function.

Set the airflow setpoints

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

l Airflow heating and cooling minimum and maximum limits

l Auxiliary flow setpoint (optional)

l 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 21.

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.

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

Revision H 29

Page 30

12S1

PSW2

OOOO

Set

Point

Set

Point

CNFG

STPT

FLOW

Set

Point

MNCL

Set

Point

3SO

MXCL

200

AUXF

Section 4: Configuring the controllers KMC Controls, Inc.

Procedure to set the airflow setpoints

Procedure Detailed steps Sensor display

1 Starting display

2 Select the flow setpoint

display.

1. 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

show the CNFG display.

Press the

display changes to STPT.

Press the or buttons to change the display to

FLOW.

button to select the CNFG options. The

3 Set the cooling minimum

airflow limit.

4 Set the cooling maximum

airflow limit.

5 Set the axillary airflow

setpoint.

Not used for all models.

Press the

changes to MNCL.

Press the or buttons to set the minimum limit

1. for cooling airflow. The setpoint changes in 1 CFM increments.

Press the

2. to the next function.

Press the or buttons to set the maximum limit

1. for cooling airflow. The setpoint changes in 1 CFM increments.

Press the

2. to the next function.

This setpoint sets the airflow forwhen reheat is active auxiliary airflow.

button to select FLOW. The display

button to save the setpoint and advance

30 Revision H

Page 31

Set

Point

Set

Point

MNHT

Set

Point

3SO

MXHT

Set

Point

MINF

Set

Point

1OO

MAXF

Set

Point

1OO

DLMN

SimplyVAV Section 4: Configuring the controllers

Procedure to set the airflow setpoints (continued)

Procedure Detailed steps Sensor display

Press the or buttons to set a value for the

1. auxillary airflow. The setpoint changes in 1 CFM increments.

6 Set the heating minimum

airflow limit

7 Set the heating maximum

airflow limit.

8 Set the minimum limit for fan

speed.

Not used for all models.

Press the

button to save the setpoint and advance

to the next function.

Press the or buttons to set the minimum limit

1. for heating airflow. The setpoint will change in 1 CFM increments.

Press the

button to save the setpoint and advance

to the next function.

Press the or buttons to set the maximum limit

1. for heating airflow. The setpoint will change in 1 CFM increments.

Press the

button to save the setpoint and advance

to the next function.

Press the or buttons to set the minimum limit

1. for the fan speed. The setpoint will change in 1% increments.

Press the

button to save the setpoint and advance

to the next function.

9 Set the maximum limit for fan

10Set the dual duct minimum

Revision H 31

speed.

Not used for all models.

airflow.

Not used for all models.

Press the or buttons to set the maximum limit

1. for the fan speed. The setpoint will change in 1% increments.

Press the

button to save the setpoint and advance

to the next function.

This setpoint is for the minimum airflow when a dualduct system is at temperature setpoint.

Press the or buttons.

Press the

button to save the setpoint and advance

to the next function.

Page 32

Set

Point

FLOW

Section 4: Configuring the controllers KMC Controls, Inc.

Procedure to set the airflow setpoints (continued)

Procedure Detailed steps Sensor display

11Select a new configuration

function or exit.

Press the or buttons to select one of the

1. following:

l STPT, BOX, ADVC, or RSTR options

l BACK to choose another configuration function

EXIT.

Press the

button to select the next function.

32 Revision H

Page 33

12S1

PSW2

OOOO

Set

Point

Set

Point

CNFG

STPT

ADVC

Set

Point

PSW1

OOOO

SimplyVAV Section 4: Configuring the controllers

Advanced options

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

l Establish or change Password 1 and Password 2

l Set timers for standby and override (optional)

l Enable automatic occupancy (optional)

l Enable discharge air temperature control (optional)

l Calibrate the sensor

Setting the advance options requires entering Password 2 which is described in the topic

Getting started with configuration on page 21.

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

Table 4–1 Procedure to set the advanced options

Procedure Steps Sensor display

1 Starting display

2 Select the advanced display.

1. 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

button to show

the STPT display.

Press the or buttons to change the display to

ADVC.

3 Change Password 1.

Revision H 33

Press the

button to select ADVC.

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.

Page 34

Set

Point

Set

Point

Set

Point

PSW2

OOOO

Set

Point

OVRD

Set

Point

Set

Point

DISABLE

DAT

Set

Point

DISABLE

AUMD

Section 4: Configuring the controllers KMC Controls, Inc.

Procedure to set the advanced options (continued)

Procedure Steps Sensor display

4 Change Password 2.

5 Set the local unoccupied

override timer.

Applies only to STE-6017 sensors.

6 Set the standby time

Applies only to STE-8201 digital sensors.

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.

Press the or buttons to set the local

1. 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

1. standby time. The value will change in 1 minute increments.

Press the

button to save the setpoint and advance

to the next function.

7 Set discharge air temperature

limiting.

Not used for all models. Required for reheat.

8 Set the automatic occupancy

mode.

Requires a discharge air temperature sensor.

Press the or buttons to enable or disable

1. discharge air temperature limiting.

Press the

button to save the setpoint and advance

to the next function.

Press the or buttons to enable or disable

1. automatic occupancy.

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.

34 Revision H

Page 35

Set

Point

CALIB

Set

Point

ADVC

Caution

SimplyVAV Section 4: Configuring the controllers

Procedure to set the advanced options (continued)

Procedure Steps Sensor display

9 Set the temperature sensor

calibration constant.

10Select a new configuration

function or exit.

Press the or buttons to set the calibration

1. 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.

Press the

button to save the setpoint and advance

to the next function.

Press the or buttons to select one of the

1. following:

l STPT, FLOW, BOX, or RSTR options

l BACK to choose .another configuration function

l EXIT to return to the temperature display.

Press the

button to select the next function.

Restore Application

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.

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

measure.

l 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 21.

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

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

Revision H 35

Page 36

12S1

PSW2

OOOO

Set

Point

Set

Point

CNFG

STPT

RSTR

Set

Point

METRIC

RSTR

ENGLISH

RSTR

Section 4: Configuring the controllers KMC Controls, Inc.

Procedure to restore application

Procedure Detailed steps Sensor display

1 Starting display

2 Select the restore settings

display.

1. 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

show the CNFG display.

Press the

display changes to STPT.

Press the or buttons to change the display to

RSTR.

button to select the CNFG options. The

3 Choose the application.

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.

Press the

Press the or buttons to choose ENGLISH or

METRIC.

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

2. the next function.

button to select RSTR.

button to save the entry and advance to

36 Revision H

Page 37

12S1

PSW2

OOOO

SimplyVAV

Sec tion 5: Balan c i n g airf l 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.

l A flow hood or other accurate method to measure airflow.

l An STE-8001 orSTE-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.

l The engineering design specifications for the minimum and maximum airflow

setpoints.

l Password 2 which is described in the topic Getting started with configuration on

page 21.

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 29 for the procedure to adjust the setpoints.

Note: Starting the balancing procedure erases all previous airflow correction factors. The airflow

readings displayed by the digital sensor 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.

Table 5–1 The airflow balancing procedure

Procedure Steps Sensor display

1 Starting display

1. Start at the temperature display.

Press the and buttons together.

l If Password 2 is not required, the display

changes to CNFG.

Revision H 37

l If required, enter Password 2. The display

changes to CNFG when Password 2 is correct.

Page 38

Set

Point

Set

Point

CNFG

COMM

BLNC

PRI

Set

Point

Set

Point

PMAX

PMIN

Section 5: Balancing airflow KMC Controls, Inc.

The airflow balancing procedure (continued)

Procedure Steps Sensor display

2 Select the CNFG display.

3 Measure and enter the actual

maximum primary airflow

From the CNFG display, press the or buttons to

1. advance to COMM and the BLNC display.

Press the

button to select BLNC. The display

advances to PRI.

Press the

button to select PRI.

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.

4 Measure and enter the actual

minimum primary airflow

Note: The airflow displayed by the digital sensor in this stepf is the actual, uncorrected airflow.

1. Wait for the maximum airflow value to stabilize.

2. With a flow hood, measure the actual airflow.

Press the

PMAX stops flashing.

Press the or buttons to enter the measured

button to advance to the entry display.

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.

38 Revision H

Page 39

Set

Point

Set

Point

Set

Point

PRI

SEC

Set

Point

Set

Point

SMAX

SimplyVAV Section 5: Balancing airflow

The airflow balancing procedure (continued)

Procedure Steps Sensor display

Note: The airflow will attempt to stabilize on the

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

Note: The airflow displayed by the digital sensor in this step is the actual, uncorrected airflow.

1. Wait for the minimum airflow value to stabilize.

2. With a flow hood, measure the actual airflow.

5 Advance or exit

6 Measure and enter the actual

maximum secondary airflow

Press the

button to advance to the entry display.

PMIN stops flashing.

Press the or buttons to enter the measured

4. airflow.

Press the

button to save the measured airflow.

The display advances to PRI.

1. Press the or buttons to select one of the following:

l 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.

l BACK to choose another commissioning function

l EXIT to return to the temperature display.

Press the

button to select the next function.

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

Revision H 39

Note: The airflow displayed by the digital sensor in this step is the actual, uncorrected airflow.

1. Wait for the maximum airflow value to stabilize.

2. 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

4. airflow.

Press the

button to save the measured airflow.

The display advances to SMIN.

Page 40

Set

Point

Set

Point

SMIN

Set

Point

SEC

Section 5: Balancing airflow KMC Controls, Inc.

The airflow balancing procedure (continued)

Procedure Steps Sensor 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 digital sensor in this step is the actual, uncorrected airflow.

1. Wait for the minimum airflow value to stabilize.

2. 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

4. airflow.

Press the

button to save the measured airflow.

The display advances to SEC.

Press the or buttons to select one of the

1. following:

l PRI to balance the primary VAV fordual duct

systems

l BACK to choose another configuration function.

l EXIT to return to the temperature display.

Press the

button to select the next function.

40 Revision H

Page 41

SimplyVAV

Sec tion 6: Application drawi ngs

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 BAC-8000 series page at

KMCControls.com.

Application drawings in this section

Cooling or heating without reheat 42 Staged reheat 43 Modulating reheat 44 Time proportional reheat 45 Floating reheat 46 Dual-duct application 47

Revision H 41

Page 42

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 KMC Controls, Inc.

Cooling or heating without reheat

The BAC-8001 is configured forsingle-duct cooling VAV control without reheat. Connect the controller as shown in the illustration Cooling or heating application drawing on page 42. 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 optionson page 33 for instructions to enable Discharge Air Temperature limiting.

Submittal sheets for several variations of this application are available from the BAC-8000

series page at KMCControls.com.

Illustration 6–1 Cooling or heating application drawing

42 Revision H

Page 43

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

The staged reheat 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.

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

terminal BO6.

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

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

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

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

l The fan speed output is 0-10 volts DC.

Submittal sheets for several variations of this application are available from the BAC-8000

series page at KMCControls.com.

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

Revision H 43

Page 44

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 KMC Controls, Inc.

Modulating reheat

The modulating reheat 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.

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

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

l The fan speed output is 0-10 volts DC.

Submittal sheets for several variations of this application are available from the BAC-8000

series page at KMCControls.com.

Illustration 6–3 Modulating reheat

44 Revision H

Page 45

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

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

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

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

l The fan speed output is 0-10 volts DC.

Submittal sheets for several variations of this application are available from the BAC-8000

series page at KMCControls.com.

Illustration 6–4 Time proportional reheat

Revision H 45

Page 46

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 KMC Controls, Inc.

Floating reheat

The floating reheat application is for BAC-8005 orBAC-8205 controllers. Use this application in hydronic systems that are controlled by an actuator with tri-state inputs. The reheat outputs are triacs that can switch up to 1ampere at 24volts AC.

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

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

l The fan speed output is 0-10 volts DC.

Submittal sheets for several variations of this application are available from the BAC-8000

series page at KMCControls.com.

Illustration 6–5 Floating reheat

46 Revision H

Page 47

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

The dual-duct application is for a BAC-8007 controller. 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 47.

Submittal sheets for several variations of this application are available from the BAC-8000

series page at KMCControls.com.

Illustration 6–6 Dual-duct wiring diagram

Revision H 47

Page 48

Section 6: Application drawings KMC Controls, Inc.

48 Revision H

Page 49

SimplyVAV

Sec tion 7: Seq u e nces of operat ion

Topics in this section cover the sequences of operation forthe 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 49 Occupancy sequence 50 Space setpoints 51 PID control loops 52 Airflow setpoints sequence 53 Changeover 53 Discharge Air Temperature (DAT) limiting 53 System diagnostic indicators 54 Damper operation 55 Fan operation 56 Reheat sequence 57 Balancing airflow sequence 60 Dual duct 61

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.

l SimplyVAV digital wall sensors

l STE-6000 series discreet temperature sensors

l Discharge air temperature sensor

l 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 67 foradditional information on value objects.

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

sequence on page 50.

Revision H 49

Page 50

Section 7: Sequences of operation KMC Controls, Inc.

STE-6000 series discreet 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 67 for additional information on value objects.

Models STE-6014 and STE-6017 also include a dial for adjusting the setpoint . If either of these two sensors is detected, the dial position sets the Active setpoint a few degrees above or below the Occupied setpoint.

The STE-6017 includes a button that when pushed will override the unoccupied state. This is described in the topic Occupancy sequence on page 50.

Discharge air temperature sensor—The DAT sensor is an optional Type-III, 10 kΩ thermistor and is required forVAV 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 53 and

Changeover on page 53.

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 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.

l Occupied on page 50

l Unoccupied

l 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 63 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 optionson

page 33 to change Automatic Occupancy.

Occupied

For controllers without a connected motion sensor, the controller changes to Occupied upon the detection of primary airflow.

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SimplyVAV Section 7: Sequences of operation

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 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 fourtemperature setpoints each for heating and cooling for a total of eight setpoints.

l Active cooling

l Occupied cooling

l Unoccupied cooling

l Standby cooling

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 50.

l Active heating

l Occupied heating

l Unoccupied heating

l Standby heating

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Section 7: Sequences of operation KMC Controls, Inc.

Active setpoint—The active setpoint is the current setpoint. The active setpoint is determined by the following.

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

setpoint.

l If an STE-6014 and STE-6017 is connected, the Active setpoint is set by the dial to be a

few degrees above or below the Occupied setpoint. The range of adjustment is set by the variable STBY OFFSET. The dial setting does not change the setpoint when in the Unoccupied or Standby state.

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

setpoint.

l If controller is in standby, the controller calculates the standby setpoint.

l 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.

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 .

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 variable STBY OFFSET. The standby offset value is entered by the controls technician during controller setup and system commissioning. See the topic Occupancy sequence on page 50.

Setpoint limits

The programming in the 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

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 erroris large. As the system reduces the difference between the setpoint and space temperature, the error becomes smaller.

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SimplyVAV Section 7: Sequences of operation

The SimplyVAV controllers use up to three PID loops.

l The heating PID loop.

l The cooling PID loop.

l 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 67.

Airflow setpoints sequence

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

As the Cooling loop increases from 0% to 100%, Primary Airflow Setpoint is proportionally calculated between Minimum Cooling Airflow and Maximum Cooling Airflow.

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

Warm Air Available

In the heating mode, as the Heating Loop increases 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 53 and Input sources on page 49.

Changeover

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 53 and Input sources

on page 49.

Discharge Air Temperature (DAT) limiting

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

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HTG SP

HTG SPAN

50%

100%

ROOM TMP

DAT loop

ROOM TMP+

15°

(Max 90°F)

Section 7: Sequences of operation KMC Controls, Inc.

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.

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 53 and Input sources on page 49.

System diagnostic indicators

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

l NEED AHU (BV1)

l NEED COLDER SUPPLY (BV2)

l NEED MORE STATIC (BV3)

l NEED HOTTER SUPPLY (BV7)

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

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SimplyVAV Section 7: Sequences of operation

NEED AHU (BV1)

The Need AHU Start value object is set to TRUE (1) for any of the following conditions.

l The system mode is UNOCCUPIED and the Cooling loop or the Heating loop is

greater than 100%for longer than 10 minutes.

l The system mode is OCCUPIED or STANDBY.

l Either of the Motion Override or Local Override variable objects are TRUE (1).

The Need for AHU Start object changes to FALSE (0) when both loops drop below 5% and the system mod is not OCCUPIED or STANDBY and both override variable objects are FALSE (0).

NEED COLDER SUPPLY (BV2)

The Need Colder Supply value object is set to TRUE (1) when the system mode is STANDBY or OCCUPIED and the Cooling loop is greater than 95% for 30 minutes. The

indicator changes to FALSE (0) when the Cooling loop falls below 90% orwhen the system mode is UNOCCUPIED.

NEED MORE STATIC (BV3)

The Need More Static value object is set to TRUE (1) when the controller has attempted to drive the damper fully open for longer than 2 minutes 30 seconds and any of the following are TRUE (1).

l The system mode is OCCUPIED or STANDBY.

l Either of the Motion Override or Local Override variable objects are TRUE (1).

When any of these conditions are no longer true, the indicator changes to FALSE (0).

NEED HOTTER SUPPLY (BV7)

The Need Warmer Supply value object is set to TRUE (1) when the system mode is STANDBY or OCCUPIED and the Heating loop is greater than 95% for 30 minutes. The

indicator changes to FALSE (0) when the Heating loop falls below 90% or when the system mode is no longer OCCUPIED.

Damper 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.

To improve stability near setpoint, the damper motor is pulsed when the actual flow rate is within 15% of the requested flow rate. The pulse rate is 5 seconds and the duty cycle is controlled by analog variable MOTOR PAUSE. In addition, the motor will pause for 10 seconds before the damper changes direction.

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UNOCCUPIED/

STANDBY

MAX FAN SPEED

MIN FAN SPEED

FAN OFF

OCCUPIED

HTG SP ROOM TEMP INCREASE

Section 7: Sequences of operation KMC Controls, Inc.

Fan operation

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.

l A binary outputtriac controls a 24-volt fan starting circuit. See the topic Configuring

the VAV Box optionson page 27 for the procedure to configure the controller for a

fan.

l 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 29 forthe 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.

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

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%.

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MAX FAN SPEED

MIN FAN SPEED

FAN OFF

OCCUPIED

HTG SP ROOM TEMP INCREASE

UNOCCUPIED/

STANDBY

SimplyVAV Section 7: Sequences of operation

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.

l Modulating reheat

l Staged reheat

l Time proportioned reheat

l 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 52.

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

l 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.

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Room temp increase

HTG SP-2F

HTG SPAN

loop %

100

HTG %

Reheat

Section 7: Sequences of operation KMC Controls, Inc.

Modulating reheat

If the controller is configured for modulating reheat, it controls an analog reheat unit with 010 volts DC at the analog reheat output. On a call for 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 44 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 58.

See the topic Staged reheat on page 43 for an application drawing.

Table 7–1 Staged reheat thresholds

Output state

Heating stages

Stage 1 35% 15%

Stage 2 65% 45%

Stage 3 95% 75%

On threshold Off threshold

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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

SimplyVAV Section 7: Sequences of operation

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 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 45 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 46 for an application drawing.

Illustration 7–6 Floating reheat operation

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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 orother measuring instrument and then compared to the airflow measurements from the sensor in the controller. The balancing process requires an STE-8001 or STE-8201 digital sensor 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 37 for the procedure to balance the airflow with a digital sensor.

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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

SimplyVAV Section 7: Sequences of operation

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.

l As the space temperature rises above the cooling setpoint, the primary airflow is

modulated from the Cooling Minimum flow to the Cooling Maximum Flow.

l As the space temperature falls below the heating setpoint, the secondary airflow is

modulated from the Heating Minimum flow to the Heating Maximum Flow.

l 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 47 for an application drawing.

Illustration 7–7 Dual duct sequence

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Section 7: Sequences of operation KMC Controls, Inc.

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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

SimplyVAV

Sec tion 8: System int egration an d networki ng

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.

l Detailed plans and drawings for the building automation system.

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

l Sequences of operation forother BACnet devices that will monitor orinteract with

SimplyVAV controllers.

Integration topics

Connecting to an MS/TP network 63 Setting up network communications 65 BACnet objects 67

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 65.

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

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Section 8: System integration and networking KMC Controls, Inc.

Connections and wiring

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

l Connect no more than 128 addressable BACnet devices to one MS/TP network. The

devices can be any mix of controllers or routers.

l For best network performance, limit the MS/TP network size to 32 controllers.

l 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.

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

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

l Connect the shields of the cable together at each mid line controller. For SimplyVAV

controllers use the S terminal.

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

l Use a KMD–5575 repeater if the cable length will exceed 4000 feet (1220 meters). Use

no more than four repeaters per MS/TP network.

l 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.

l For controllers at the end of the networkset the EOL switches to On

l 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:

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

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

properly wired.

l If the voltage or current on the network exceeds safe levels, the bulbs may open and

protect the controller from damage.

Bulbs are illuminated If one or both bulbs are illuminated, it indicates the 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 illuminated, the closer that controller is to the source of the problem. Remove power and check the network and power connections.

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12S1

PSW2

OOOO

Set

Point

CNFG

COMM

Set

Point

Set

Point

D ID

OO72O69

Set

Point

MAC

SimplyVAV Section 8: System integration and networking

Bulbs are open If one or both bulbs are open—as tested with an ohm meter—it indicates the

voltage or current on the network exceeded safe levels. Correct the conditions and replace the bulbs.

Bulbs not inserted correctly One lead from one or both of the bulbs are not inserted into the

socket.

Setting 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 21.

Table 8–1 Procedure to set up network communications

Procedure Detailed steps Sensor display

1 Starting display

2 Select the CNFG display

3 Enter the device instance.

1. 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.

Press the

Press the or buttons to change the first digit.

button. The display changes to DID.

4 Enter the MAC address.

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Press the

button to select the next digit. Repeat for all seven digits.

When the

button is pressed for the last digit, the

display changes to MAC.

Press the or buttons to change the MAC

1. address.

Press the

button to save the selected MAC

address.

The display changes to BAUD.

Page 66

Set

Point

BAUD

384OO

Set

Point

COMM

Section 8: System integration and networking KMC Controls, Inc.

Procedure to set up network communications (continued)

Procedure Detailed steps Sensor display

5 Enter the baud

6 Advance or exit

Press the or buttons to select a new baud.

Press the

button is save the selected baud.

The display returns to COMM.

Press the or buttons to select one of the

1. following:

l BLNC or CNFG options

l 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 drawingson page 41.

Table 8–2 Input objects

Input Name Description Object type Termination

AI1 DISCHARGE AIR Discharge Air Temperature KMC 10K Type_III 10Kfixed

AI2 SPACE SENSOR Space Sensor KMC Type II Deg F 10Kfixed

AI3 SETPOINT OFFSET Setpoint Offset TABLE 4 10Kfixed

AI4 PRIMARY DUCT Primary Duct Pressure

AI5 SECONDARY DUCT 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

drawingson page 41.

Table 8–3 Output objects

Output Name Description Units

AO3 ANALOG HEAT Analog Heat 0_100%

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

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Section 8: System integration and networking KMC Controls, Inc.

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 OFFSET Setpoint Offset

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 OFFSET Standby Offset

AV13 MIN COOL FLOW Minimum Cooling Flow

AV14 MAX COOL FLOW Maximum Cooling Flow

AV15 MIN HEAT FLOW Minimum Heating Flow

AV16 MAX HEAT FLOW Maximum Heating Flow

AV17 AUXILIARY FLOW Auxiliary 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

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SimplyVAV Section 8: System integration and networking

Analog value objects (continued)

Object Name Description

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

AV51 ApplicationID

AV54 MOTOR PAUSE Analog Value #54

AV55 CHNG_OVER_DELAY Cooling Change Over Delay

AV56 LOW AUTO OCC Low Limit forAuto Occupy

Table 8–5 Binary value objcts

Object Name Description

BV1 NEED AHU Need For AHU

BV2 NEED COLDER SPLY Need For Colder AirSupply

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

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Binary value objcts (continued)

Object Name Description

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

LOOP2 HT LOOP Heating Loop

LOOP3 DAT Loop Discharge Air Temp Loop

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Append i x A: K-factors

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, CFM K-factor, LPS

4 265 8

5 357 11

6 460 14

7 652 19

8 890 27

9 1145 34

10 1443 43

12 1972 59

14 2771 86

16 3741 111

24 x 16 6980 208

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Appendix A: K-factors KMC Controls, Inc.

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I n d e x

bulbs

network 63 replacement 9

accessories 9 actuator

mounting 14 rotation limits 13 shaft size 6 specifications 6 speed 6

airflow

balancing 37 maximum limit 29 minimum limit 29 sensor 15 setting limits 29

applications 41

cooling only without reheat 42 cooling/heating without reheat 42 dual duct 47 floating reheat 46 modulating reheat 44 staged reheat 43 three-stage reheat 43 time proportional reheat 45

automatic occupancy

enabling 33 sequence 50

auxillary flow

sequence 53 setting 29

BAC-8001

cooling only 42 cooling/heating 42

BAC-8005

modulating reheat 44-46

staged reheat 43 BAC-8007, dual-duct 47 BACnet objects 67

input 67

loops 70

outputs 67

PID loop sequence 52

value 68 balancing

procedure 37

sequence 60 baud 65

calibration

airflow 37

sensors 33 Celsius display 35 changeover sequence 53 configuration 21 connecting

airflow sensor 15

DAT sensor 16

input devices 15

output devices 15

sensors 15

damper

sequence 55

setting direction to close 27 device instance 65 diagnostic indicators 54 discharge air temperature

enabling 33

sensor connection 16 display units 35 dual duct

application drawing 47

sequence 61

end-of-line switches 63 end stops 13 English display 35

Fahrenheit display 35 fans

configuration 27

parallel sequence 56

series sequence 56

setting speed 29

speed sequence 56

with floating reheat 46

with modulating reheat 44

with staged reheat 43

with time proportional reheat 45 floating reheat 46

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inputs

as BACnet objects 67 connecting 15 DAT sensor 16 room sensors 15 specifications 6

installing the controller 13

K-factor

setting 27 unknown 71

MAC address 65 maintenance 18 Metric display 35 models 10 modulating reheat 44 motion sensing sequence 50 mounting 14 MS/TP wiring 63

network

address 65 baud 65 bulbs 63 termination 63 wiring 63

occupied

sequence 50 temperature setpoints 23

outputs

as BACnet objects 67 connecting 15 specifications 6

override

sequence 49 setting time 33

parallel fan

configuration 27 sequence 56

passwords

changing and establishing 33 Password 1 19

KMC Controls, Inc.

Password 2 21

PID loops

as BACnet objects 70 sequence of operation 52

reheat

configuration 27 floating 46 modulating 44 sequences of operation 57 staged 43 three-stage 43 time proportional 45

two-stage 43 replacement parts 9 restore application 35 rotation limits 13

sensors

airflow 15

calibration 33

compatible 9

connecting 15

DAT sensor 16

room sensors 15

sequence 49 sequences of operation 49

airflow setpoints 53

balancing 60

changeover 53

damper 55

DAT limiting 53

dual duct 61

fans 56

input sources 49

motion detection 50

occupancy 50

PID loops 52

sensors 49

setpoints 51

standby 50

system diagnostics 54

unoccupied 50 series fan 56

configuration 27

sequence 56 setpoints

limits sequence 51

room temperature sequence 51

sequence 51

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setting

changeover 23 limits 23 occupied 23 room 19

standby 23 shaft size for actuator 6 specifications 6 standby

sequence 50

setting timer 33 submittal sheets 41 system diagnostic indicators 54

three-stage reheat 43 time proportional reheat 45 timers, setting 33 transformer wiring 17 tri-state reheat 46 two-stage reheat 43

units to display 35 unoccupied

sequence 50

temperature setpoints 23

value objects 68

wiring

application drawings 41

connecting power 17

DAT sensor 16

MS/TP network 63

room sensors 15

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