SimplyVAV Application and Installation Guide Revision E

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Revision E

SimplyVAV

Application and Installation Guide

2

SimplyVAV

©2014, KMC Controls, Inc.

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

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

Controls, Inc.

Printed in U.S.A.

The material in this manual is for information purposes only. The contents and the product it describes are subject to change without notice. KMC

Controls, Inc. makes no representations or warranties with respect to this manual. In no event shall KMC Controls, Inc. be liable for any damages, direct or incidental, arising out of or related to the use of this manual.

KMC Controls, Inc.

19476 Industrial Drive

New Paris, IN 46553

U.S.A.

TEL: 1.574.831.5250

FAX: 1.574.831.5252

E-mail: [email protected]

Revision E

SimplyVAV

C o n t e n t s

Contents

Section 1: About the controllers

Specifications

Accessories and replacement parts

Available models

Safety considerations

Section 2: Installing the controllers

Setting the rotation limits

Mounting on a VAV terminal box

Connecting an airflow sensor

Connecting inputs and outputs

Connecting room temperature sensors

Connecting a DAT sensor

Connecting power

Maintenance

Section 3: Changing the room setpoint

Section 4: Configuring the controllers

Getting started with configuration

Entering system temperature setpoints and limits

Configuring the VAV Box options

Set the airflow setpoints

Advanced options

Restore Application

Section 5: Balancing airflow

Section 6: Application drawings

Cooling or heating without reheat

Staged reheat

Modulating reheat

Time proportional reheat

Floating reheat

Dual-duct application

Section 7: Sequences of operation

Input sources

Occupancy sequence

Automatic occupancy

Occupied

Unoccupied

Revision E

49

50

51

52

53

54

55

57

58

59

59

59

59

23

25

26

27

31

34

37

40

43

3

11

12

13

5

7

15

19

20

21

22

16

17

18

18

3

Standby

Space setpoints

Types of setpoints

Setpoint limits

PID control loops

Airflow setpoints sequence

Changeover

Discharge Air Temperature (DAT) limiting

System diagnostics

Damper operation

Fan operation

Series Fan

Parallel Fan

Reheat sequence

Modulating reheat

Staged reheat

Time proportioned reheat

Floating reheat

Balancing airflow sequence

Dual duct

Section 8: System integration and networking

Connecting to an MS/TP network

Connections and wiring

End of line termination switches

Network bulbs

Setting up network communications

BACnet objects

Input objects

Output objects

Value objects

Loop objects

Appendix A: K-factors

Index

4

SimplyVAV

73

75

77

77

77

78

80

71

72

72

73

65

66

66

66

62

64

65

65

59

60

60

61

61

61

62

67

67

68

69

69

83

85

Revision E

SimplyVAV

S e c t i o n 1 :

A b o u t t h e c o n t r o l l e r s

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

The SimplyVAV series of controllers are an easy and unique approach to operating a wide variety of VAV terminal units. The integrated actuators, internal airflow sensors, and wide variety of application programs make these

BACnet Application Specific controllers ideal for either new or retrofit installations.

The controllers feature simple, menu driven setup choices when used with a

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

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

BAC-8001 Model BAC-8001 is supplied with inputs, outputs, and sequences of operation for the following functions.

Single duct heating and cooling VAV

Automatic heating/cooling changeover including morning warmup

Occupancy setback—requires STE-8201

System diagnostic indicators

Airflow balancing

Revision E 5

Section 1: About the controllers SimplyVAV

BAC-8005 and BAC-8205 Models BAC-8005 and BAC-8205 are supplied with inputs, outputs, and sequences of operation for the following functions.

Single duct heating and cooling VAV

Modulating, floating, time proportional, and staged reheat

Series and parallel fan control

Automatic heating/cooling changeover including morning warmup

Discharge air temperature limiting

Occupancy setback—requires STE-8201

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

System diagnostic indicators

Airflow balancing

BAC-8007 Model BAC-8007 is supplied with inputs, outputs, and sequences of operation for the following functions.

Dual-duct VAV heating and cooling

Occupancy setback—requires STE-8201

System diagnostic indicators

Airflow balancing

Additional topics in this section

Specifications

Accessories and replacement parts

Available models

Safety considerations

7

11

12

13

6 Revision E

SimplyVAV

Specifications

Revision E

Section 1: About the controllers

SimplyVAV specifications are subject to change without notice.

Inputs and outputs

All inputs and outputs are factory programmed and application specific. No field configuration is required. For details on input and output connections, see the topic

Application drawings

on page 49 . For a detailed listing of input

and output objects, see the topic

BACnet objects

on page 77 .

Analog inputs

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

Key features Standard units of measure.

Overvoltage input protection

Connectors RJ-45 room sensor jack

Screw terminals for wire sizes 12-26 AWG

Conversion

Input range

12–bit analog–to–digital conversion

Passive, 10 kΩ pull-up to 3.3 volts DC

Analog outputs

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

49 .

Application drawings

on page

Key features Output short protection

Standard units of measure

Connector

Conversion

Output voltage

Output current

Screw terminals for wire size 12-26 AWG

12–bit digital-to-analog conversion

0–10 VDC

30 mA per output, 30 mA total for all analog outputs

Binary outputs

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

49 .

Application drawings

on page

Key features Optically isolated triac output

7

Section 1: About the controllers SimplyVAV

Connector

Output range

Screw terminals for wire size 12-26 AWG

Maximum switching 24 Volts AC

1 ampere per external output, 3 amperes total

Communications—BACnet MS/TP

EIA–485 operating at rates up to 76.8 kilobaud.

Removable screw terminal block.

Wire size 12-26 AWG

Switch selected end of line termination

Memory

Programs and program parameters are stored in nonvolatile memory.

Auto restart on power failure

Air flow sensor features

Configured as BACnet analog input object.

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

Span accuracy 4.5% of reading.

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

Barbed connections for 1/4 inch FR tubing.

Actuator specifications

Torque

Angular rotation

40 in-lb. (4.5 N • m)

0 to 95°

Adjustable end stops at 45° and 60° rotation

Motor timing

BAC-8001,

BAC-8005, BAC-8007

90 sec./90° at 60 Hz

108 sec./90° at 50 Hz

60 sec./90° at 60 Hz Motor timing

BAC-8205

Shaft size Directly mounts on 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.

8 Revision E

SimplyVAV Section 1: About the controllers

Regulatory

UL 916 Energy Management Equipment

BACnet Testing Laboratory listed as an application specific controller

(ASC).

CE compliant

SASO PCP Registration KSA R-103263

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

Class B

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

Installation

Supply voltage

Weight

Case material

Environmental limits

Operating

Shipping

Humidity

24 volts AC, -15%, +20% 5 VA, 50/60 Hz

13.2 ounces (376 grams)

Flame retardant plastic

32 to 120° F (0 to 49° C)

–40 to 140° F (–40 to 60° C)

5–93% relative humidity (non-condensing)

Revision E 9

Section 1: About the controllers

Dimensions

6.53 in.

166 mm

4.89 in.

124 mm

ON CTS

1 2

SimplyVAV

6.00 in.

152 mm

4.25 in.

108 mm

0.77 in.

19 mm

2.14 in.

54 mm

1.92 in.

49 mm

10 Revision E

SimplyVAV Section 1: About the controllers

Accessories and replacement parts

The following accessories and replacement parts are available from KMC

Controls, Inc.

Sensors

STE-8001W80

STE-8201W80

STE-6010W80

STE-6014W80

STE-6017W80

SimplyVAV sensor and digital display

SimplyVAV sensor and digital display with motion sensor

Discrete temperature sensor with RJ-45 connector

Discrete temperature sensor with rotary setpoint dial, RJ-45 connector

Discrete temperature sensor with rotary setpoint dial, override button, RJ-45 connector

Surge suppressors

KMD-5567

Replacement parts

HPO-0054

HPO-0063

Dual duct actuator

TSP-8001

EIA-485 surge suppressor for MS/TP networks

Replacement bulbs

Replacement two-pin jumper

VAV actuator with airflow inputs (required for dual duct)

Airflow sensors

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

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

SSS-1013

SSS-1014

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

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

SSS-1015

KIT-8001

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

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

Revision E 11

Section 1: About the controllers SimplyVAV

Available models

The following is a list of SimplyVAV available models.

Description Models

BACnet ASC: VAV Cooling/Heating only, 40 in-lbs,

90 second actuator

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

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

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

BAC-8001

BAC-8005

BAC-8007

BAC-8205

12 Revision E

SimplyVAV

Safety considerations

Section 1: About the controllers

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

Danger

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

Warning

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

Caution

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

Note:

Tip:

Notes provide additional information that is important.

Provides programing tips and shortcuts that may save time.

Revision E 13

Section 1: About the controllers SimplyVAV

14 Revision E

SimplyVAV

S e c t i o n 2 :

I n s t al l i n g t h e c o n t r o l l e r s

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

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

Installation topics in this section

Setting the rotation limits

Mounting on a VAV terminal box

Connecting an airflow sensor

Connecting inputs and outputs

Connecting room temperature sensors

Connecting a DAT sensor

Connecting power

Maintenance

16

17

18

18

19

20

21

22

Revision E 15

Section 2: Installing the controllers SimplyVAV

Setting the rotation limits

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

Caution

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

Illustration 2–1 Controller rotation limit selections

Rotate CW

60

45

Position notch as shown

Stop position holes

Stop screw in storage

16

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.

Revision E

SimplyVAV Section 2: Installing the controllers

Mounting on a VAV terminal box

Note:

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.

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

Status LEDs

Gear clutch button

Mounting tab

Mounting bushing

AI5

AI6

GND

AI7

COMM

READY

AI1

GND

AO3

AO4

SC

BO5

BO6

BO7

SC

BO8

24VAC

BACnet MS/TP

ON CTS

1 2

Drive hub and V-bolt

Mount the controller as follows:

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

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

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

4. Place the controller over the damper shaft.

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

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

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

Revision E 17

Section 2: Installing the controllers

Connecting an airflow sensor

SimplyVAV

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

COMM

READY

ON CTS

1 2

BACnet MS/TP

24VAC

Connecting inputs and outputs

Total airflow (high) Static airflow (low)

Typically, airflow sensors are supplied by the manufacturer as part of the

VAV terminal unit. If a sensor is needed, choose a sensor listed in the topic

Accessories and replacement parts

on page 11 .

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

For input and output connection information, see the topic

Application drawings

on page 49

.

To connect room temperature sensors, see the topic

Connecting room temperature sensors

on page 19

To connect a DAT sensor, see the topic

Connecting a DAT sensor

on page

20 .

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

BACnet objects

on page 77

.

18 Revision E

SimplyVAV Section 2: Installing the controllers

Connecting room temperature sensors

Connect any of the following sensors to the RJ-45 thermostat and sensor jack.

The controller automatically detects the type of sensor. No programming or configuration is required.

STE-6010

STE-6014

STE-6017

STE-8001

STE-8201

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

Ethernet cable

Maximum 75 feet

Revision E 19

Section 2: Installing the controllers SimplyVAV

Connecting a DAT sensor

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

Illustration 2–5 Discharge air temperature sensor location

DAT sensor

Changeover only

DAT sensor

Prefered location

Connect a 10 kΩ, Type 3 thermistor temperature probe to the discharge air temperature input. The input includes the internal pull-up resistor. An

STE-1401 sensor is suitable for this application. Follow the instructions supplied with the sensor for installation.

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

Advanced options

on page 37

to enable discharge air temperature control.

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

Discharge air temperature sensor location

.

Illustration 2–6 Discharge air temperature input details

T

COMM

READY

AI1

GND

AO3

AO4

20 Revision E

SimplyVAV Section 2: Installing the controllers

Connecting power

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

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

KMC Controls recommends powering only one controller from each transformer.

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

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

Illustration 2–7 Controller power terminals

24 VAC

Class 2

Blue

Brown

AI5

AI6

GND

AI7

COMM

READY

AI1

GND

AO3

AO4

SC

BO5

BO6

BO7

SC

BO8

24VAC

BACnet MS/TP

ON CTS

1 2

Revision E 21

Section 2: Installing the controllers

Maintenance

SimplyVAV

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

22 Revision E

SimplyVAV

S e c t i o n 3 :

C h an g i n g t h e r o o m s e t p o i n t

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

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

Quick start to changing setpoints

1.

Press any button to begin changing setpoints.

2.

If required, enter Password 1.

3.

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

4.

Press the

Set

Point button to save the value or advance to the next function.

Tip:

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

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

Changing room setpoints

Procedure

1

Starting display

Steps

Start from the temperature display.

STE display

72

12S1

Revision E 23

Section 3: Changing the room setpoint SimplyVAV

Changing room setpoints (continued)

Procedure Steps

2

Enter Password 1.

1.

Press any button. The display changes to

PSW1

.

2.

Press the or buttons to change the first digit.

3.

Press the

Set

Point button to select the next digit.

Repeat for all four digits.

STE display

PSW1

OOOO

3

Set the active cooling setpoint.

4

Set the active heating setpoint.

Note:

If Password 1 has not previously been entered, the display will change to the occupied cooling setpoint display after Step 1.

1.

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

2.

Press the

Set

Point button to save the value.

The display advances to set the heating setpoint.

1.

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

2.

Press the

Set

Point button to save the value.

The display returns to the temperature display.

745

COOLING

685

HEATING

24 Revision E

SimplyVAV

S e c t i o n 4 :

C o n f i g u r i n g t h e c o n t r o l l e r s

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

Note:

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

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

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

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

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

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

Changing the room setpoint

on page 23

.

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

Configuration topics

Getting started with configuration

Entering system temperature setpoints and limits

Configuring the VAV Box options

Set the airflow setpoints

Advanced options

Restore Application

26

27

31

34

37

40

Revision E 25

Section 4: Configuring the controllers SimplyVAV

Getting started with configuration

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

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

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

See the topic

Advanced options

on page 37 .

Enter the configuration mode

Procedure

1

Starting display

Detailed steps

1.

Start at the temperature display.

2.

Press the and buttons together.

l l

If Password 2 is not required, the display changes to CNFG .

If required, enter Password 2. The display changes to CNFG when Password 2 is correct.

STE display

72

12S1

2

Enter Password 2.

3

Select a configuration function.

1.

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

2.

Press the or button to change the first digit.

3.

Press the

Set

Point button to select the next digit.

Repeat for all four digits.

4.

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

COMM

.

PSW2

OOOO

Note:

If Password 2 has not previously been entered the display will change to the display after Step 1.

CNFG

Access to the configuration functions always start at the

CNFG display.

CNFG

26 Revision E

SimplyVAV Section 4: Configuring the controllers

Entering system temperature setpoints and limits

Tip:

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

The temperature setpoints include the following items.

Minimum cooling and maximum heating setpoints

Occupied and unoccupied cooling setpoints

Occupied and unoccupied heating setpoints

Changeover differential setpoint

Standby differential setpoint

Setting the temperature setpoints requires entering Password 2 which is described in detail in the topic

Getting started with configuration

on page 26 .

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

Procedure to set the temperature setpoints

Procedure Detailed steps

1

Start at the temperature display.

1.

Start at the temperature display.

2.

Press the and buttons together.

l l

If Password 2 is not required, the display changes to CNFG .

If required, enter Password 2. The display changes to CNFG when Password 2 is correct.

STE display

72

12S1

PSW2

OOOO

2

Select the setpoint display.

1.

From the CNFG display, press the or buttons to show

STPT

.

CNFG

2.

Press the

Set

Point button to select the

The display changes to STPT .

CNFG options.

3.

Press the changes to

Set

Point button to select

MIN

.

STPT . The display

STPT

Revision E 27

Section 4: Configuring the controllers SimplyVAV

Procedure to set the temperature setpoints (continued)

Procedure Detailed steps

3

Set the minimum cooling setpoint.

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

1.

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

0.5° increments.

2.

Press the

Set

Point button to save the setpoint and advance to the next function.

STE display

MIN

68O

4

Set the maximum heating setpoint.

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

1.

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

0.5° increments.

2.

Press the

Set

Point button to save the setpoint and advance to the next function.

5

Set the occupied cooling setpoint.

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

1.

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

0.5° increments.

2.

Press the

Set

Point button to save the setpoint and advance to the next function.

MAX

78O

OCCL

74O

Note:

This setpoint can also be changed as described in the topic

Changing the room setpoint

on page 23

.

28 Revision E

SimplyVAV Section 4: Configuring the controllers

Procedure to set the temperature setpoints (continued)

Procedure Detailed steps

6

Set the occupied heating setpoint.

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

1.

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

0.5° increments.

2.

Press the

Set

Point button to save the setpoint and advance to the next function.

STE display

OCHT

7OO

Note:

This setpoint can also be changed as described in the section

Changing the room setpoint

on page 23

.

7

Set the unoccupied cooling setpoint.

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

1.

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

2.

Press the

Set

Point button to save the setpoint and advance to the next function.

8

Set the unoccupied heating setpoint.

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

1.

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

2.

Press the

Set

Point button to save the setpoint and advance to the next function.

9

Set the supply air temperature changeover setpoint.

Not used in all models.

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

1.

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

2.

Press the

Set

Point button to save the setpoint and advance to the next function.

UNCL

8OO

UNHT

62O

CHNG

74

Revision E 29

Section 4: Configuring the controllers SimplyVAV

Procedure to set the temperature setpoints (continued)

Procedure Detailed steps

10

Set the minimum temperature differential setpoint.

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

1.

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

2.

Press the

Set

Point button to save the setpoint and advance to the next function.

11

Set the standby differential setpoint.

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

1.

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

2.

Press the

Set

Point button to save the setpoint and advance to the next function.

12

Select a new configuration function or exit.

1.

Press the or buttons to select one of the following:

BOX , FLOW , ADVC , or RSTR options

BACK to choose another configuration function.

EXIT to return to the temperature display.

2.

Press the

Set

Point button to select the next function.

STE display

DIFF

O5

OS

STPT

30 Revision E

SimplyVAV Section 4: Configuring the controllers

Configuring the VAV

Box options

Tip:

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

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

K-factors

on page 83

.

Reheat configuration (optional)

Fan configuration (optional)

Direction of damper to close

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

Getting started with configuration

on page 26

.

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

Procedure to set the box functions

Procedure Detailed steps

1

Starting display

1.

Start at the temperature display.

2.

Press the and buttons together.

l l

If Password 2 is not required, the display changes to CNFG .

If required, enter Password 2. The display changes to correct.

CNFG when Password 2 is

STE display

72

12S1

PSW2

OOOO

2

Select the box settings display.

1.

From the

CNFG display, press the or buttons to show the

BOX display.

CNFG

2.

Press the

Set

Point button to select the

The display changes to

STPT

.

CNFG options.

STPT

3.

Press the or buttons to change the display to

BOX

.

BOX

4.

Press the

Set

Point button to select BOX .

Revision E 31

Section 4: Configuring the controllers SimplyVAV

Procedure to set the box functions (continued)

Procedure Detailed steps

3

Set the primary VAV terminal unit K-factor.

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

1.

Press the or buttons to set the primary

K-factor.

2.

Press the

Set

Point button to save the entry and advance to the next function.

STE display

PKFT

9O4

4

Set the secondary VAV terminal unit K-factor.

Not used in all models.

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

1.

Press the or buttons to set the secondary

K-factor.

2.

Press the

Set

Point button to save the entry and advance to the next function.

SKFT

9O4

5

Set the mode of reheat for the terminal unit.

Not used in all models.

1.

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

None

—Reheat is not enabled.

Staged

—Enables staged reheat.

Modulating

—The analog reheat output varies from 0-10 volts DC.

Floating

—The reheat outputs control a tristate actuator.

Time proportional

—Controls a thermal wax valve with a 24-volt triac output.

REHT

NONE

2.

Press the

Set

Point button to save the reheat option and advance to the next function.

32 Revision E

SimplyVAV Section 4: Configuring the controllers

Procedure to set the box functions (continued)

Procedure Detailed steps

6

Set the fan option.

1.

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

Not used in all models.

None

—No fan is connected to the controller.

Series

—The VAV unit includes a series fan.

Parallel

—The VAV unit includes a parallel fan.

STE display

FAN

NONE

2.

Press the

Set

Point button to save the fan option and advance to the next function.

7

Set the damper direction to close.

1.

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

DDIR

CCW

—The actuator turns counterclockwise to close the damper.

CW

—The actuator turns clockwise to close the damper.

CCW

2.

Press the

Set

Point button to save the damper option and advance to the next function.

8

Select a new configuration function or exit.

1.

Press the or buttons to select one of the following:

STPT

,

FLOW

,

ADVC

. or

RSTR options

BACK to choose another configuration function

EXIT to return to the temperature display.

2.

Press the

Set

Point button to select the next function.

BOX

Revision E 33

Section 4: Configuring the controllers SimplyVAV

Set the airflow setpoints

Note:

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

Airflow heating and cooling minimum and maximum limits

Auxiliary flow setpoint (optional)

Minimum and maximum fan speeds (optional)

Setting the airflow setpoints requires entering Password 2 which is described in the topic

Getting started with configuration

on page 26

.

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.

Procedure to set the airflow setpoints

Procedure Detailed steps

1

Starting display

1.

Start at the temperature display.

2.

Press the and buttons together.

l l

If Password 2 is not required, the display changes to CNFG .

If required, enter Password 2. The display changes to CNFG when Password 2 is correct.

STE display

72

12S1

PSW2

OOOO

34 Revision E

SimplyVAV Section 4: Configuring the controllers

Procedure to set the airflow setpoints (continued)

Procedure Detailed steps

2

Select the flow setpoint display.

1.

From the

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

STE display

CNFG

2.

Press the

Set

Point button to select the

The display changes to

STPT

.

CNFG options.

STPT

3.

Press the or buttons to change the display to

FLOW

.

FLOW

4.

Press the changes to

Set

Point button to select

MNCL

.

FLOW . The display

3

Set the cooling minimum airflow limit.

1.

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

2.

Press the

Set

Point button to save the setpoint and advance to the next function.

MNCL

OO

4

Set the cooling maximum airflow limit.

1.

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

2.

Press the

Set

Point button to save the setpoint and advance to the next function.

5

Set the axillary airflow setpoint.

Not used for all models.

MXCL

3SO

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

1.

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

CFM increments.

2.

Press the

Set

Point button to save the setpoint and advance to the next function.

AUXF

200

6

Set the heating minimum airflow limit

1.

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

2.

Press the

Set

Point button to save the setpoint and advance to the next function.

MNHT

OO

Revision E 35

Section 4: Configuring the controllers SimplyVAV

Procedure to set the airflow setpoints (continued)

Procedure Detailed steps

7

Set the heating maximum airflow limit.

1.

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

2.

Press the

Set

Point button to save the setpoint and advance to the next function.

STE display

MXHT

3SO

8

Set the minimum limit for fan speed.

Not used for all models.

9

Set the maximum limit for fan speed.

Not used for all models.

1.

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

2.

Press the Set

Point button to save the setpoint and advance to the next function.

1.

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

2.

Press the

Set

Point button to save the setpoint and advance to the next function.

MINF

2O

MAXF

1OO

10

Set the dual duct minimum airflow.

Not used for all models.

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

1.

Press the or buttons.

2.

Press the

Set

Point button to save the setpoint and advance to the next function.

11

Select a new configuration function or exit.

1.

Press the or buttons to select one of the following:

STPT , BOX , ADVC , or RSTR options

BACK to choose another configuration function EXIT .

2.

Press the

Set

Point button to select the next function.

DLMN

1OO

FLOW

36 Revision E

SimplyVAV Section 4: Configuring the controllers

Advanced options

Tip:

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

Establish or change Password 1 and Password 2

Set timers for standby and override (optional)

Enable automatic occupancy (optional)

Enable discharge air temperature control (optional)

Calibrate the sensor

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

Getting started with configuration

on page 26

.

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

Table 4–1 Procedure to set the advanced options

Procedure Steps

1

Starting display

1.

Start at the temperature display.

2.

Press the and buttons together.

l l

If Password 2 is not required, the display changes to

CNFG

.

If required, enter Password 2. The display changes to correct.

CNFG when Password 2 is

STE display

72

12S1

PSW2

OOOO

2

Select the advanced display.

1.

From the

CNFG display, press the show the STPT display.

Set

Point button to

CNFG

2.

Press the or buttons to change the display to ADVC .

STPT

ADVC

3.

Press the

Set

Point button to select

ADVC

.

Revision E 37

Section 4: Configuring the controllers SimplyVAV

Procedure to set the advanced options (continued)

Procedure Steps

3

Change Password 1.

Note:

Entering four zeros (0000) removes the password.

1.

Press the or buttons to change the first digit.

2.

Press the

Set

Point button to select the next digit.

Repeat for all four digits.

3.

When the

Set

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

4

Change Password 2.

Note:

Entering four zeros (0000) removes the password.

1.

Press the or buttons to change the first digit.

2.

Press the

Set

Point button to select the next digit.

Repeat for all four digits.

3.

When the

Set

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

5

Set the local unoccupied override timer.

Applies only to STE-6017 sensors.

1.

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

2.

Press the

Set

Point button to save the setpoint and advance to the next function.

6

Set the standby time

Applies only to STE-8201 sensors.

1.

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

2.

Press the

Set

Point button to save the setpoint and advance to the next function.

7

Set discharge air temperature limiting.

1.

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

2.

Press the

Set

Point button to save the setpoint and advance to the next function.

Not used for all models.

Required for reheat.

STE display

PSW1

OOOO

PSW2

OOOO

OVRD

3O

15

DAT

DISABLE

38 Revision E

SimplyVAV Section 4: Configuring the controllers

Procedure to set the advanced options (continued)

Procedure Steps

8

Set the automatic occupancy mode.

Requires a discharge air temperature sensor.

1.

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

2.

Press the

Set

Point 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.

STE display

AUMD

DISABLE

9

Set the temperature sensor calibration constant.

1.

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

minute increments.

l l

For a low input reading enter a positive correction value.

For a high input reading enter a negative correction value.

2.

Press the

Set

Point button to save the setpoint and advance to the next function.

10

Select a new configuration function or exit.

1.

Press the or buttons to select one of the following:

STPT

,

FLOW

,

BOX

, or

RSTR options

BACK to choose .another configuration function

EXIT to return to the temperature display.

2.

Press the

Set

Point button to select the next function.

OO

CALIB

ADVC

Revision E 39

Section 4: Configuring the controllers SimplyVAV

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.

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

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

Tip:

Access to the Restore Application function requires entering Password 2 which is described in the topic

Getting started with configuration

on page 26 .

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

Caution

Choosing RSTR deletes all previously configured values including balancing values and passwords. Only the

BACnet communications settings will remain unchanged.

Procedure to restore application

Procedure Detailed steps

1

Starting display

1.

Start at the temperature display.

2.

Press the and buttons together.

l l

If Password 2 is not required, the display changes to CNFG .

If required, enter Password 2. The display changes to correct.

CNFG when Password 2 is

STE display

72

12S1

PSW2

OOOO

40 Revision E

SimplyVAV Section 4: Configuring the controllers

Procedure to restore application (continued)

Procedure Detailed steps

2

Select the restore settings display.

1.

From the

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

STE display

CNFG

2.

Press the

Set

Point button to select the

The display changes to

STPT

.

CNFG options.

STPT

3.

Press the or buttons to change the display to

RSTR

.

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.

RSTR

4.

Press the

Set

Point button to select

RSTR

.

3

Choose the application.

1.

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.

2.

Press the

Set

Point button to save the entry and advance to the next function.

RSTR

METRIC

RSTR

ENGLISH

Revision E 41

Section 4: Configuring the controllers SimplyVAV

42 Revision E

SimplyVAV

S e c t i o n 5 :

B al an c i n g ai r f l o w

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

Note:

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

A flow hood or other accurate method to measure airflow.

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

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

Password 2 which is described in the topic

Getting started with configuration

on page 26

.

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

procedure to adjust the setpoints.

on page 34

for the

Note:

Tip:

Starting the balancing procedure erases all previous airflow correction factors. The airflow readings displayed by the STE-8001 are the actual uncorrected airflow readings as measured by the controller.

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

Revision E 43

Section 5: Balancing airflow SimplyVAV

Table 5–1 The airflow balancing procedure

Procedure

1

Starting display

Steps

1.

Start at the temperature display.

2.

Press the and buttons together.

l l

If Password 2 is not required, the display changes to CNFG .

If required, enter Password 2. The display changes to CNFG when Password 2 is correct.

STE display

72

12S1

PSW2

OOOO

2

Select the

CNFG display.

1.

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

COMM and the

BLNC

CNFG

COMM

2.

Press the

Set

Point advances to button to select BLNC . The display

PRI

.

BLNC

3.

Press the

Set

Point button to select PRI .

PRI

44 Revision E

SimplyVAV Section 5: Balancing airflow

The airflow balancing procedure (continued)

Procedure Steps

3

Measure and enter the actual maximum primary airflow

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

Note:

The airflow will attempt to stabilize on the highest value for either the cooling or heating maximum airflow even if only one mode is operational.

Note:

The airflow displayed by the STE-8000 in this step is the actual, uncorrected airflow.

1.

Wait for the maximum airflow value to stabilize.

2.

With a flow hood, measure the actual airflow.

3.

Press the display.

Set

Point button to advance to the entry

PMAX stops flashing.

4.

Press the or buttons to enter the measured airflow.

5.

Press the

Set

Point button to save the measured airflow. The display changes to

PMIN

.

STE display

PMAX

OO

4

Measure and enter the actual minimum primary airflow

The display begins flashing

PMIN and also displays the actual airflow at the bottom.

Note:

The airflow will attempt to stabilize on the lowest value for either the cooling or heating minimum airflow even if only one mode is operational.

Note:

The airflow displayed by the STE-8000 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.

3.

Press the

Set

Point button to advance to the entry display.

PMIN stops flashing.

4.

Press the or buttons to enter the measured airflow.

5.

Press the

Set

Point button to save the measured airflow. The display advances to PRI .

PMIN

OO

Revision E 45

Section 5: Balancing airflow SimplyVAV

The airflow balancing procedure (continued)

Procedure Steps

5

Advance or exit

1.

Press the or buttons to select one of the following:

SEC to balance the secondary VAV for dual duct systems. Choosing the SMAX

SEC advances to display. This is available only on dual duct models.

BACK to choose another commissioning function

EXIT to return to the temperature display.

STE display

PRI

SEC

2.

Press the

Set

Point button to select the next function.

6

Measure and enter the actual maximum secondary airflow

The display begins flashing

SMAX and also displays the actual airflow at the bottom.

Note:

The airflow displayed by the STE-8000 in this step is the actual, uncorrected airflow.

1.

Wait for the maximum airflow value to stabilize.

2.

With a flow hood, measure the actual airflow.

3.

Press the display.

Set

Point button to advance to the entry

SMAX stops flashing.

4.

Press the or buttons to enter the measured airflow.

5.

Press the

Set

Point button to save the measured airflow. The display advances to

SMIN

.

SMAX

OO

46 Revision E

SimplyVAV Section 5: Balancing airflow

The airflow balancing procedure (continued)

Procedure Steps

7

Measure and enter the actual minimum secondary airflow

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

Note:

The airflow displayed by the STE-8000 in this step is the actual, uncorrected airflow.

1.

Wait for the minimum airflow value to stabilize.

2.

With a flow hood, measure the actual airflow.

3.

Press the

Set

Point button to advance to the entry display.

SMIN stops flashing.

4.

Press the or buttons to enter the measured airflow.

5.

Press the

Set

Point button to save the measured airflow. The display advances to SEC .

STE display

SMIN

OO

8

Advance or exit

1.

Press the or buttons to select one of the following:

PRI to balance the primary VAV for dual duct systems

BACK to choose another configuration function.

EXIT to return to the temperature display.

2.

Press the

Set

Point button to select the next function.

SEC

Revision E 47

Section 5: Balancing airflow SimplyVAV

48 Revision E

SimplyVAV

S e c t i o n 6 :

A p p l i c at i o n d r aw i n g s

This section covers the drawings, materials, and instructions for specific

VAV applications.

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

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

.

Resources

Application drawings in this section

Cooling or heating without reheat

Staged reheat

Modulating reheat

Time proportional reheat

Floating reheat

Dual-duct application

50

51

52

53

54

55

Revision E 49

Section 6: Application drawings SimplyVAV

Cooling or heating without reheat

Duct

Temp

Sensor

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

Cooling or heating application drawing

on page 50

. A BAC-8005 or BAC-8205 may also be used for this application.

For cooling and heating, a duct temperature sensor is required for Discharge

Air Temperature limiting and automatic changeover. See the topic

Advanced options

on page 37

for instructions to enable Discharge Air Temperature limiting.

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

Resources

page at www.SimplyVAV.com

.

Illustration 6–1 Cooling or heating application drawing

24 VAC

AI5

AI6

GND

AI7

COMM

READY

AI1

GND

AO3

AO4

SC

BO5

BO6

BO7

SC

BO8

24VAC

BACnet MS/TP

ON CTS

1 2

50 Revision E

Duct

Temp

Sensor

Fan

Speed

24VAC

Fan start

Reheat

Stage 1

Stage 2

Stage 3

SimplyVAV

Staged reheat

24 VAC

Section 6: Application drawings

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

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

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

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

For cooling and heating, a duct temperature sensor is required for Discharge

Air Temperature limiting and automatic changeover. See the topic

Advanced options

on page 37

for instructions to enable Discharge Air Temperature limiting.

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

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

The fan speed output is 0-10 volts DC.

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

Resources

page at www.SimplyVAV.com

.

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

AI5

AI6

GND

AI7

COMM

READY

AI1

GND

AO3

AO4

SC

BO5

BO6

BO7

SC

BO8

24VAC

BACnet MS/TP

ON CTS

1 2

Revision E 51

Section 6: Application drawings SimplyVAV

Duct

Temp

Sensor

Analog

Heat

Fan

Speed

0-10 VDC

24VAC

Fan start

Modulating reheat

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

For cooling and heating, a duct temperature sensor is required for Discharge

Air Temperature limiting and automatic changeover. See the topic

Advanced options

on page 37

for instructions to enable Discharge Air Temperature limiting.

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

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

The fan speed output is 0-10 volts DC.

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

Resources

page at www.SimplyVAV.com

.

Illustration 6–3 Modulating reheat

24 VAC

Class 2

AI5

AI6

GND

AI7

COMM

READY

AI1

GND

AO3

AO4

SC

BO5

BO6

BO7

SC

BO8

24VAC

BACnet MS/TP

ON CTS

1 2

52 Revision E

SimplyVAV Section 6: Application drawings

Time proportional reheat

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

For cooling and heating, a duct temperature sensor is required for Discharge

Air Temperature limiting and automatic changeover. See the topic

Advanced options

on page 37

for instructions to enable Discharge Air Temperature limiting.

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

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

The fan speed output is 0-10 volts DC.

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

Resources

page at www.SimplyVAV.com

.

Illustration 6–4 Time proportional reheat

Duct

Temp

Sensor

Fan

Speed

ON CTS

1 2

24VAC

Fan start

24VAC THERMAL

ACTUATOR

AI5

AI6

GND

AI7

COMM

READY

AI1

GND

AO3

AO4

SC

BO5

BO6

BO7

SC

BO8

24VAC

BACnet MS/TP

24 VAC

Revision E 53

Section 6: Application drawings

Floating reheat

Duct

Temp

Sensor

Fan

Speed

24VAC

Fan start

Open

Close

Common

SimplyVAV

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

24 volts AC.

For cooling and heating, a duct temperature sensor is required for Discharge

Air Temperature limiting and automatic changeover. See the topic

Advanced options

on page 37

for instructions to enable Discharge Air Temperature limiting.

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

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

The fan speed output is 0-10 volts DC.

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

Resources

page at www.SimplyVAV.com

.

Illustration 6–5 Floating reheat

AI5

AI6

GND

AI7

COMM

READY

AI1

GND

AO3

AO4

SC

BO5

BO6

BO7

SC

BO8

24VAC

BACnet MS/TP

ON CTS

1 2

24 VAC

54 Revision E

SimplyVAV

Dual-duct application

Section 6: Application drawings

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

Dual-duct wiring diagram

on page 55

.

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

Resources

page at www.SimplyVAV.com

.

Illustration 6–6 Dual-duct wiring diagram

AI5

AI6

GND

AI7

COMM

READY

AI1

GND

AO3

AO4

SC

BO5

BO6

BO7

SC

BO8

24VAC

BACnet MS/TP

ON CTS

1 2

BAC-8007

24 VAC

COM

CW

CCW

P2

P1

P OUT

24VAC

TSP-8001

Revision E 55

Section 6: Application drawings SimplyVAV

56 Revision E

SimplyVAV

S e c t i o n 7 :

Se q u e n c e s o f o p e r at i o n

Topics in this section cover the sequences of operation for the

SimplyVAV controllers. These are advanced topics for control technicians and engineers.

These sequences of operation are descriptions of each major component of the

SimplyVAV programming. They are provided as an aid to understanding on how the controllers operate.

This section covers the following sequences of operation.

Input sources

Occupancy sequence

Space setpoints

PID control loops

Airflow setpoints sequence

Changeover

Discharge Air Temperature (DAT) limiting

System diagnostics

Damper operation

Fan operation

Reheat sequence

Balancing airflow sequence

Dual duct

65

66

69

69

62

62

64

65

58

59

60

61

61

Revision E 57

Section 7: Sequences of operation

Input sources

58

SimplyVAV

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

SimplyVAV digital wall sensors

STE-6000 series thermistor temperature sensors

Discharge air temperature sensor

Airflow sensors and pickups

SimplyVAV digital wall sensors

—The SimplyVAV digital wall sensors include a room temperature sensor, a digital display, and a push button interface for entering setpoints and configuring the controllers. If a

SimplyVAV digital wall sensor is detected, the sensor's temperature is mapped to the Space Temperature Reference value object as the temperature input value. See the topic

BACnet objects

on page 77

for additional information on value objects.

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

Occupancy sequence

on page 59 .

STE-6000 series thermistor temperature sensors

—There are three models of the STE-6000 series sensors compatible with the SimplyVAV controllers. If one of the three sensors is detected, the sensor's temperature is mapped to the Space Temperature Reference value object as the temperature input value.

See the topic objects.

BACnet objects

on page 77

for additional information on value

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

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

Occupancy sequence

on page

59 .

Discharge air temperature sensor

—The DAT sensor is an optional Type-III,

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

Discharge Air Temperature (DAT) limiting

on page 62

and

Changeover

on page

62 .

Airflow sensors and pickups

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

Revision E

SimplyVAV

Occupancy sequence

Revision E

Section 7: Sequences of operation along with the K-factor of the VAV terminal unit are used to calculate the airflow through the VAV unit.

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

Occupied

on page 59

Unoccupied

Standby

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

System integration and networking

on page 71

for details.

Automatic occupancy

If Automatic Occupancy is enabled, the controller will automatically toggle between

Unoccupied

,

Occupied

, and airflow and motion in the zone.

Standby

based on the presence of primary

The default for Automatic Occupancy is

Disabled

. See the topic

Advanced options

on page 37

to change Automatic Occupancy.

Occupied

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

Occupied

upon the detection of primary airflow.

Controllers with a connected motion sensor change to

Occupied

upon the detection of primary airflow and motion in the space. The unit will remain in the

Occupied

state as long as periodic motion is detected and primary airflow continues. If motion stops, the controller changes to

Standby

.

Unoccupied

The controller Occupancy mode changes to of primary airflow. While in the

Unoccupied

when it detects a loss

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 changes to

Standby

and

Occupied

after detecting motion in the space. Motion in the space is

59

Section 7: Sequences of operation SimplyVAV defined as two movements detected within 5 minutes. The controller will change back to

Standby

after a lack a lack of motion for the period specified by the variable Standby Time.

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

Space setpoints

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

Active cooling

Occupied cooling

Unoccupied cooling

Standby cooling

Active heating

Occupied heating

Unoccupied heating

Standby heating

Types of setpoints

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

Occupancy sequence

on page 59

.

Active setpoint

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

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

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

If controller occupancy is setpoint.

Standby

, the controller calculates the standby

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

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

Occupied

.

Occupied setpoint

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

Unoccupied setpoint

—A temperature setpoint entered by the controls technician during controller setup and system commissioning. This is the setpoint used when the system is unoccupied .

60 Revision E

SimplyVAV

PID control loops

Airflow setpoints sequence

Section 7: Sequences of operation

Standby setpoint

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

Occupancy sequence

on page 59

.

Setpoint limits

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

If a user is adjusting a setpoint and it falls within the range set by the value of

Minimum Setpoint Differential, the corresponding setpoint will be changed to maintain the differential. For example, the Minimum Setpoint Differential is

4° F and the Occupied Heating setpoint is 70° F. If the user lowers the

Occupied  Cooling setpoint to 71° F, the controller recalculates the Occupied

Heating setpoint and changes it to 67° F.

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

The SimplyVAV controllers use up to three PID loops.

The heating PID loop.

The cooling PID loop.

The discharge air temperature (DAT) loop.

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

The PID loops in the SimplyVAV controllers are standard BACnet objects and are described in the topic

BACnet objects

on page 77

.

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

If no room sensor is connected to the controller, the controller uses the

Minimum Cooling Airflow setpoint to maintain airflow.

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

Airflow Setpoint is proportionally calculated between Minimum Cooling

Airflow and Maximum Cooling Airflow.

Revision E 61

Section 7: Sequences of operation SimplyVAV

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

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 62

and

Input sources

on page 58

.

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 changeover temperature is 74° Fahrenheit.

Heat

. The default

See the topic

Discharge Air Temperature (DAT) limiting

on page 62

and

Input sources

on page 58 .

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 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.

62 Revision E

SimplyVAV Section 7: Sequences of operation

Illustration 7–1 DAT limiting operation

ROOM TMP+ 15°

(Max 90°F)

DAT loop

ROOM TMP

100%

50%

HTG SPAN

0%

HTG SP

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

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

See also the topics

Changeover

on page 62

and

Input sources

on page 58

.

Revision E 63

Section 7: Sequences of operation SimplyVAV

System diagnostics

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

Need for higher static pressure

Need for cooler supply air

Need for warmer supply air

Need AHU start

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

Need for higher static pressure The Need Higher Static value object is set to

True (1)

when the damper is fully open and airflow cannot reach the required setpoint value.

Need for cooler supply air The Need Cooler Supply value object is set to

True (1)

when the damper is fully open and the Cooling loop is greater than

95% for 30 minutes. The indicator changes to falls below 90%.

False (0)

when the Cooling loop

Need for warmer supply air The Need Warmer Supply value object is set to

True (1)

when the damper is fully open and the Heating loop is greater than

95% for 30 minutes. The indicator changes to falls below 90%.

False (0)

when the Heating loop

Need AHU start The Need AHU Start value object is set to of the following conditions.

True (1)

for any

The system mode is loop reaches 100%.

Unoccupied

and the Cooling loop or the Heating

The system mode is

Occupied

.

The system mode is

Standby

.

The Need for AHU Start object changes to below 5%.

False (0)

when both loops drop

64 Revision E

SimplyVAV Section 7: Sequences of operation

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.

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.

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

Configuring the VAV Box options

on page 31

for the procedure to configure the controller for a fan.

A 0-10 volt DC analog output controls the speed of the fan. The output controls fan speed at either Min Fan Speed or Max Fan Speed. See the topic

Set the airflow setpoints

speeds.

on page 34

for the procedure to set the fan

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

MAX FAN SPEED

OCCUPIED

MIN FAN SPEED

FAN OFF

UNOCCUPIED/

STANDBY

HTG SP

STANDBY

ROOM TEMP INCREASE

Revision E 65

Section 7: Sequences of operation SimplyVAV

Parallel Fan

If the controller is configured for a parallel fan, any time the Occupancy mode of the controller is set to either

Occupied

or

Standby

and there is a call for heat, the fan runs continuously. The fan starts when the Heating loop is greater than 5% and stops when the Heating loop is less than 1%.

When the unit Occupancy state is

Unoccupied

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

Illustration 7–3 Parallel fan operation

MAX FAN SPEED

MIN FAN SPEED

OCCUPIED

UNOCCUPIED/

STANDBY

FAN OFF

HTG SP ROOM TEMP INCREASE

Reheat sequence

The SimplyVAV controllers can control four types of reheat installations.

Modulating reheat

Staged reheat

Time proportioned reheat

Floating reheat

All reheat is controlled by either the Heating loop or the Discharge Air Temp

Limiting (DAT) PID loop. Loops are described in the topic

PID control loops

on page 61 .

If Discharge Air Temp Limiting is enabled, reheat is controlled by the

DAT PID loop.

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

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

Reheat loop.

Modulating reheat

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

66 Revision E

SimplyVAV Section 7: Sequences of operation reheat, the reheat output is modulated over the span of the Reheat loop. If the

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

See the topic

Modulating reheat

on page 52

for an application drawing.

Illustration 7–4 Modulating reheat operation

100

HTG %

Revision E

10

0

HTG SPAN

-2F HTG SP

Room temp increase

Staged reheat

If the controller is configured for staged reheat, it can control up to three stages of reheat through binary triac outputs. The reheat outputs are commanded

On

when the Reheat loop rises above the

On

threshold and

Off

when the loop drops below the

Off

threshold. Thresholds are described in the following chart,

Staged reheat thresholds

on page 67

.

See the topic

Staged reheat

on page 51

for an application drawing.

Table 7–1 Staged reheat thresholds

Output state

Heating stages

On threshold Off threshold

Stage 1

Stage 2

Stage 3

35%

65%

95%

15%

45%

75%

Time proportioned reheat

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

67

Section 7: Sequences of operation SimplyVAV loop is at 50%, the reheat output is

On

for 5 seconds and

Off

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

See the topic

Time proportional reheat

on page 53

for an application drawing.

Illustration 7–5 Time proportional reheat operation

100

HTG %

68

10

0

HTG SPAN

-2F HTG SP

Room temp increase

Floating reheat

If the controller is configured for floating reheat, it controls two binary triac outputs to drive the inputs of a tri-state actuator connected to a valve. If the

Reheat loop is less than 30%, the valve is driven closed. If the loop is greater than 70%, the valve is driven open. If the loop is in between 30% and 70%, no valve action is taken.

See the topic

Floating reheat

on page 54

for an application drawing.

Illustration 7–6 Floating reheat operation

100

HTG %

DRIVE

OPEN

70

NO ACTION

30

0

DRIVE

CLOSED

HTG SPAN

-2F HTG SP

Room temp increase

Revision E

SimplyVAV Section 7: Sequences of operation

Balancing airflow sequence

Dual duct

Balancing airflow is the process of calibrating the internal airflow sensor to a known standard. In the field, airflow is measured with an airflow hood or other measuring instrument and then compared to the airflow measurements from the sensor in the controller. The balancing process uses an STE-8001 or

STE-8201 as the technicians setup tool for initiating the balancing sequence and entering actual flow measurements.

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

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

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

See the topic

Balancing airflow

airflow with an STE-8001.

on page 43

for the procedure to balance the

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

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

Maximum Flow.

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

Maximum Flow.

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

See the topic,

Dual-duct application

on page 55

for an application drawing.

Revision E 69

Section 7: Sequences of operation

Illustration 7–7 Dual duct sequence

SimplyVAV

Max. cooling airflow

Max heating airflow

MIN

CLG

CFM

Dual duct minimum airflow

MIN

HTG

CFM

HTG SPAN

HTG SP

CLG SPAN

CLG SP

Room temp increase

70 Revision E

SimplyVAV

S e c t i o n 8 :

Sy s t e m i n t e g r at i o n an d n e t w o r ki n g

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

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

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

Detailed plans and drawings for the building automation system.

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

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

Integration topics

Connecting to an MS/TP network

Setting up network communications

BACnet objects

72

75

77

Revision E 71

Section 8: System integration and networking SimplyVAV

Connecting to an

MS/TP network

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

To enter the BACnet device instance, MAC address, and network baud, see the topic

Setting up network communications

on page 75 .

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

ON

1 2

AI5

AI6

GND

AI7

COMM

READY

AI1

GND

AO3

AO4

SC

BO5

BO6

BO7

SC

BO8

24VAC

BACnet MS/TP

ON CTS

1 2

End of line controller with grounded shield

EOL switches ON

ON

1 2

AI5

AI6

GND

AI7

SC

BO5

BO6

BO7

SC

BO8

COMM

READY

AI1

GND

AO3

AO4

24VAC

BACnet MS/TP

ON CTS

1 2

Mid line controller

EOL switches OFF

Connections and wiring

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

ON

1 2

AI5

AI6

GND

AI7

SC

BO5

BO6

BO7

SC

BO8

COMM

READY

AI1

GND

AO3

AO4

24VAC

BACnet MS/TP

ON CTS

1 2

End of line controller with open shield

EOL switches ON

72 Revision E

SimplyVAV

Revision E

Section 8: System integration and networking

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

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

60 controllers.

Use twisted pair, shielded cable with capacitance of no more than

51 picofarads per foot for all network wiring. Belden cable model #82760 meets the cable requirements.

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

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

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

SimplyVAV controllers use the

S

terminal.

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

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

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

End of line termination switches

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

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

On

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

Off

Network bulbs

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

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

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

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

Bulbs are illuminated 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 illumniated, the closer that controller is to the source of the problem. Remove power and check the network and power connections.

73

Section 8: System integration and networking SimplyVAV

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.

74 Revision E

SimplyVAV Section 8: System integration and networking

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 26 .

Table 8–1 Procedure to set up network communications

Procedure Detailed steps

1

Starting display

1.

Start at the temperature display.

2.

Press the and buttons together.

l l

If Password 2 is not required, the display changes to

CNFG

.

If required, enter Password 2. The display changes to correct.

CNFG when Password 2 is

STE display

72

12S1

PSW2

OOOO

2

Select the

CNFG display

1.

From the

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

CNFG

2.

Press the

DID

.

Set

Point button. The display changes to

COMM

3

Enter the device instance.

1.

Press the or buttons to change the first digit.

2.

Press the

Set

Point button to select the next digit.

Repeat for all seven digits.

3.

When the

Set

Point button is pressed for the last digit, the display changes to MAC .

4

Enter the MAC address.

1.

Press the or buttons to change the MAC address.

2.

Press the address.

Set

Point button to save the selected MAC

The display changes to BAUD .

D ID

OO72O69

MAC

11

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Section 8: System integration and networking SimplyVAV

Procedure to set up network communications (continued)

Procedure Detailed steps

5

Enter the baud

1.

Press the or buttons to select a new baud.

2.

Press the

Set

Point button is save the selected baud.

The display returns to COMM .

STE display

BAUD

384OO

6

Advance or exit

1.

Press the or buttons to select one of the following:

BLNC or CNFG options

EXIT to return to the temperature display.

2.

Press the

Set

Point button to select the next function.

COMM

76 Revision E

SimplyVAV

BACnet objects

Section 8: System integration and networking

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.

Caution

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

Input objects

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

Application drawings

on page

49 .

Table 8–2 Input objects

Input Name

AI1

AI2

AI3

AI4

AI5

Description

DISCHARGE AIR Discharge Air Temperature

SPACE SENSOR Space Sensor

SPACE

SETPOINT

Space Setpoint

PRIMARY DUCT Primary Duct Pressure

SECONDARY

DUCT

Secondary Duct Pressure

Object type

KMC10K_Type_III

KMC Type II Deg F

TABLE_4

Output objects

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

Application drawings

on page 49

.

Table 8–3 Output objects

Output Name

AO3 ANALOG HEAT

Description

Analog Heat

Units

0_100%

Revision E 77

Section 8: System integration and networking

Output objects (continued)

Output Name

AO4

BO1

BO2

BO5

BO6

BO7

BO8

FAN SPEED

DAMPER CW

DAMPER CCW

FAN

HT STAGE 1

HT STAGE 2

HT STAGE 3

Note:

Description

Fan Speed

Damper Clockwise

Damper Counter Clockwise

Fan

Heating Stage 1

Heating Stage 2

Heating Stage3

SimplyVAV

Units

0_100%

Value objects

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

Not all objects are present in every model.

Table 8–4 Analog value objects

Object Name

AV1

AV2

AV3

AV4

AV5

AV6

AV7

AV8

SPACE TEMP

STPT REFERENCE

ACT COOL STPT

ACT HEAT STPT

OCC CL STPT

OCC HT SPT

UNOCC CL STPT

UNOCC HT STPT

AV9 MIN CL STPT

AV10 MAX HT STPT

AV11 MIN STPT DIFF

AV12 STBY DIFF

AV13 MIN COOL FLOW

Description

Space Temperature

Setpoint Reference

Active Cooling Setpoint

Active Heating Setpoint

Occupied Cooling Setpoint

Occupied Heating Setpoint

Unoccupied Cooling Setpoint

Unoccupied Heating Setpoint

Minimum Cooling Setpoint

Maximum Heating Setpoint

Minimum Setpoint Differential

Standby Differential

Minimum Cooling Flow

78 Revision E

SimplyVAV

Revision E

Section 8: System integration and networking

Analog value objects (continued)

Object Name Description

AV14 MAX COOL FLOW

AV15 MIN HEAT FLOW

AV16 MAX HEAT FLOW

AV17 AUXILLARY FLOW

AV18 PRI K FACT

AV19 PRI CORR SLOPE

AV20 PRI CORR OFFST

AV21 PRI LO FLOW CORR

AV22 PRI FLOW STPT

AV23 PRI RAW FLOW

AV24 PRI ACTUAL FLOW

AV32 MIN FAN SPEED

AV33 MAX FAN SPEED

Maximum Cooling Flow

Minimum Heating Flow

Maximum Heating Flow

Auxillary Flow

Primary K Factor

Primary Correction Slope

Primary Correction Offset

Primary Low Flow Correction

Primary Flow Setpoint

Primary Raw Flow

Primary Actual Flow

Minimum Fan Speed

Maximum Fan Speed

AV36 DAT STPT

AV37 SAT CHANGEOVER

AV38 LOCAL OVRD TIME

AV39 STANDBY TIME

AV40 STANDBY TRIGGER

AV43 MEASURED MAX

AV44 MEASURED MIN

AV45 PRI SAVE MIN FLO

Discharge Air Temp Setpoint

SAT Changeover Temperature

Local Override Timer

Standby Timer (motion)

Standby Trigger

Measured Maximum

Measured Minimum

Primary Saved Minimum Airflow

AV47 DAT MAXIMUM

AV48 CW DMP POS

AV49 CCW DMP POS

Maximum DAT Setpoint

CW Damper Position

CCW Damper Position

AV50 DAMPER POSITION Damper Position

AV55 CHNG_OVER_DELAY Cooling Change Over Delay

AV56 LOW AUTO OCC Low Limit for Auto Occupy

79

Section 8: System integration and networking

Table 8–5 Binary value objcts

Object Name

BV6

BV7

BV8

BV9

BV10

BV11

BV1

BV2

BV3

BV4

BV5

BV12

BV13

BV14

NEED AHU

NEED COLDER SPLY

NEED MORE STATIC

LOCAL OVRD

MOTION OVRD

Description

Need For AHU

Need For Colder Air Supply

Need For AHU

Local Override Mode

Motion Override Mode

MOTION SENSOR

NEED HOTTER SPLY

Motion Sensor (Wall Stat)

Need For Hotter Air Supply

CHANGE OVER MODE SAT Changeover Mode

DAT LIMITING

CLOCKWISE CLOSE

AUTO OCCUPANCY

Discharge Air Temp Limiting

Clockwise Close

Auto Occupancy Detection

BALANCE MODE

DAT SENSOR

PRI BAL TRIGGER

Balance Mode

DAT Sensor Present

Primary Balance Trigger

SimplyVAV

Table 8–6 Multistate value objects

Object Name Description

MSV1 OCCUPIED MODE

MSV2 FAN CONFIG

MSV3 REHEAT

MSV6 WALL SENSOR

Occupied Mode

Fantype Configuration

Reheat Type

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

80 Revision E

SimplyVAV Section 8: System integration and networking

PID control loop objects (continued)

Loop Name Description

LOOP2 HT LOOP

LOOP3 DAT Loop

Heating Loop

Discharge Air Temp Loop

Revision E 81

Section 8: System integration and networking SimplyVAV

82 Revision E

SimplyVAV Appendix A: K-factors

A p p e n d i x A :

K - f ac t o r s

To set up a VAV controller, a K-factor must be entered into the controller.

Typically, this is part of the airflow chart that the manufacturer places on the

VAV unit. If this information is missing and not available from the manufacturer, use the K-factor in the following chart.

Table A–1 Start point K factors

Duct size in inches K-factor

12

14

16

8

9

10

20

22

6

7

4

5

26

40

24 x 16

890

1145

1143

1972

2771

3741

2106

2106

265

357

460

652

2498

7176

6980

Revision E 83

Appendix A: K-factors SimplyVAV

84 Revision E

SimplyVAV

I n d e x

A

accessories

11

actuator mounting

17

rotation limits shaft size

7

specifications speed airflow

7

7

16

balancing

43

maximum limit

34

minimum limit sensor

18

setting limits applications

49

34

34

cooling only without reheat

50

cooling/heating without reheat dual duct

55

floating reheat

54

modulating reheat staged reheat

51

52

three-stage reheat

51

time proportional reheat automatic occupancy

53

50

enabling

37

sequence

59

auxillary flow sequence setting

34

61

B

BAC-8001 cooling only

50

cooling/heating

BAC-8005

50

floating reheat

54

modulating reheat

BAC-8007, dual-duct

52

staged reheat

51

time proportional reheat

55

BACnet objects input

77

77

53

Revision E loops

80

outputs

77

PID loop sequence value balancing

78

procedure sequence

43

69

baud

75

bulbs network

72

replacement

11

61

C

calibration airflow

43

sensors

37

Celsius display

40

changeover sequence configuration

25

connecting airflow sensor

DAT sensor

20

18

input devices output devices

18

18

sensors

19

62

D

damper sequence

65

setting direction to close device instance

75

discharge air temperature enabling

37

sensor connection display units

40

dual duct

20

application drawing sequence

69

55

31

E

end-of-line switches end stops

16

English display

40

72

F

Fahrenheit display

40

85

Index fans configuration

31

parallel sequence series sequence

65

65

setting speed

34

speed sequence

65

with floating reheat

54

with modulating reheat

52

with staged reheat

51

with time proportional reheat floating reheat

54

53

I

inputs as BACnet objects connecting

DAT sensor

18

20

room sensors specifications

19

7

77

installing the controller

15

K

K-factor setting

31

unknown

83

M

MAC address maintenance

75

22

Metric display

40

models

12

modulating reheat

52

motion sensing sequence mounting

17

MS/TP wiring

72

59

N

network address baud bulbs

75

72

75

termination wiring

72

72

86

O

occupied sequence

59

temperature setpoints outputs

77

as BACnet objects connecting

18

specifications override

7

sequence

58

setting time

37

27

P

parallel fan configuration sequence passwords

65

31

changing and establishing

Password 1

Password 2

PID loops

23

26

as BACnet objects

80

sequence of operation

61

37

R

reheat configuration floating

54

modulating

52

31

sequences of operation staged

51

three-stage

51

time proportional

53

two-stage

51

replacement parts

11

restore application rotation limits

16

40

66

S

sensors airflow

18

calibration compatible

37

11

connecting

DAT sensor

19

20

SimplyVAV

Revision E

SimplyVAV room sensors sequence

58

19

sequences of operation

57

airflow setpoints balancing

69

changeover damper

65

62

DAT limiting dual duct

69

62

fans

65

input sources

58

motion detection occupancy

59

61

59

PID loops standby

61

sensors setpoints

58

60

59

system diagnostics unoccupied

59

series fan

65

31

configuration sequence

65

setpoints occupied room

23

27

standby

27

shaft size for actuator

64

limits sequence

60

room temperature sequence sequence setting

60

changeover limits

27

27

7

specifications

7

standby sequence

59

setting timer submittal sheets

37

49

system diagnostics

64

60

T

three-stage reheat

51

time proportional reheat timers, setting

37

transformer wiring

21

53

Revision E tri-state reheat two-stage reheat

54

51

U

units to display

40

unoccupied sequence

59

temperature setpoints

27

V

value objects

78

W

wiring application drawings connecting power

21

DAT sensor

20

MS/TP network

72

room sensors

19

49

Index

87

Index SimplyVAV

88 Revision E

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