KMC Controls SimplyVAV BAC-8001, BAC-8005, BAC-8007, BAC-8205, SimplyVAV STE-8001W80, STE-8201W80, STE-6010W80, STE-6014W80, STE-6017W80, HSO-9001, HSO-9011, KMD-5567, HPO-0054, HPO-0063, TSP-8001, SSS-1012 Application and Installation Guide
Below you will find brief information for SimplyVAV BAC-8001, SimplyVAV BAC-8005, SimplyVAV BAC-8007, SimplyVAV BAC-8205. These 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.
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Revision F
SimplyVAV
Application and Installation Guide
2
KMC Controls, Inc.
©2016, 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 F
SimplyVAV
C o n t e n t s
Section 1: About the controllers
Accessories and replacement parts
Section 2: Installing the controllers
Mounting on a VAV terminal box
Connecting room temperature sensors
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
Section 6: Application drawings
Cooling or heating without reheat
Section 7: Sequences of operation
Discharge Air Temperature (DAT) limiting
Revision F
Contents
3
Contents
Section 8: System integration and networking
Connecting to an MS/TP network
End of line termination switches
Setting up network communications
KMC Controls, Inc.
4 Revision F
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.
Revision F
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.
l
Single duct heating and cooling VAV l
Automatic heating/cooling changeover including morning warmup l
Occupancy setback—requires STE-8201 l
System diagnostic indicators l
Airflow balancing
BAC-8005 and BAC-8205
Models BAC-8005 and BAC-8205 are supplied with inputs, outputs, and sequences of operation for the following functions.
l
Single duct heating and cooling VAV l
Modulating, floating, time proportional, and staged reheat l
Series and parallel fan control l
Automatic heating/cooling changeover including morning warmup l
Discharge air temperature limiting l
Occupancy setback—requires STE-8201 l
Actuator position feedback for true damper positioning (BAC-8205 only) l
System diagnostic indicators l
Airflow balancing
BAC-8007
Model BAC-8007 is supplied with inputs, outputs, and sequences of operation for the following functions.
5
Section 1: About the controllers l
Dual-duct VAV heating and cooling l
Occupancy setback—requires STE-8201 l
System diagnostic indicators l
Airflow balancing
Additional topics in this section
Accessories and replacement parts
KMC Controls, Inc.
6 Revision F
SimplyVAV
Revision F
Section 1: About the controllers
Specifications
SimplyVAV specifications are subject to change without notice.
Inputs and outputs
All inputs and outputs are factory programmed and application specific. No field configuration is required. For details on input and output connections, see the topic
Application drawings on page 44 . For a detailed listing of input and output objects, see the
topic
Analog inputs
Analog inputs represent BACnet analog input. Not all input are applicable or required for all models.
Key features
Connectors
Conversion
Input range
Standard units of measure.
Overvoltage input protection
RJ-45 room sensor jack
Screw terminals for wire sizes 12-26 AWG
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
Application drawings on page 44
.
Key features
Connector
Conversion
Output voltage
Output current
Output short protection
Standard units of measure
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
Application drawings on page 44
.
Key features
Connector
Output range
Optically isolated triac output
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
l
EIA–485 operating at rates up to 76.8 kilobaud.
7
Section 1: About the controllers KMC Controls, Inc.
l
Removable screw terminal block.
l
Wire size 12-26 AWG l
Switch selected end of line termination
Memory
l
Programs and program parameters are stored in nonvolatile memory.
l
Auto restart on power failure
Air flow sensor features
l
Configured as BACnet analog input object.
l
CMOS differential pressure 0-2 inches of water (0-500 Pa) measurement range.
Internally linearized and temperature compensated.
l
Span accuracy 4.5% of reading.
l
Zero point accuracy 0.0008 in. H2O/0.2 Pa at 25° C l
Barbed connections for 1/4 inch FR tubing.
Actuator specifications
Torque 40 in-lb. (4.5 N
• m)
Angular rotation 0 to 95°
Adjustable end stops at 45° and 60° rotation
Motor timing
BAC-8001,
BAC-8005, BAC-8007
90 sec./90° at 60 Hz
108 sec./90° at 50 Hz
Motor timing
BAC-8205
60 sec./90° at 60 Hz
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.
Regulatory
l
UL 916 Energy Management Equipment l
BACnet Testing Laboratory listed as an application specific controller (ASC).
l
CE compliant l
FCC Class B, Part 15, Subpart B and complies with Canadian ICES-003 Class B
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
Installation
Supply voltage 24 volts AC, -15%, +20% 5 VA, 50/60 Hz
8 Revision F
SimplyVAV Section 1: About the controllers
Weight
Case material
13.2 ounces (376 grams)
Flame retardant plastic
Environmental limits
Operating
Shipping
Humidity
32 to 120° F (0 to 49° C)
–40 to 140° F (–40 to 60° C)
5–93% relative humidity (non-condensing)
Dimensions
6.53 in.
166 mm
4.89 in.
124 mm
ON CTS
1 2
4.25 in.
108 mm
6.00 in.
152 mm
0.77 in.
19 mm
2.14 in.
54 mm
1.92 in.
49 mm
Revision F 9
Section 1: About the controllers KMC Controls, Inc.
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
Sensor cables
HSO-9001
HSO-9011
Surge suppressors
KMD-5567
Cable: Ethernet, 50 foot
Cable: Ethernet, 50 foot, Plenum Rated
EIA-485 surge suppressor for MS/TP networks
Replacement parts
HPO-0054
HPO-0063
Replacement bulbs
Replacement two-pin jumper
Dual duct actuator
TSP-8001 VAV actuator with airflow inputs (required for dual duct)
Airflow sensors
For VAV terminal units without airflow pickup tubes, order one of the following sensors.
SSS-1012
SSS-1013
SSS-1014
SSS-1015
KIT-8001
3-5/32 in. length (80 mm)
5-13/32 in. length (137 mm)
7-21-32 in. length (195 mm)
9-29/32 in. length (252 mm)
A 3-5/32 inch sensor and 3 feet of FR tubing
Available models
The following is a list of SimplyVAV available models.
10 Revision F
SimplyVAV Section 1: About the controllers
Description
BACnet ASC: VAV Cooling/Heating only, 40 in-lbs, 90 second actuator
Models
BAC-8001
BACnet ASC: VAV Fan and Reheat, 40 in-lbs, 90 second actuator BAC-8005
BACnet ASC: VAV Dual Duct, 40 in-lbs, 90 second actuator BAC-8007
BACnet ASC: VAV Fan and Reheat, True damper position, 40 in-lbs,
60 second actuator
BAC-8205
Revision F 11
Section 1: About the controllers KMC Controls, Inc.
Safety considerations
KMC Controls assumes the responsibility for providing you a safe product and safety guidelines during its use. Safety means protection to all individuals who install, operate, and service the equipment as well as protection of the equipment itself. To promote safety, we use hazard alert labeling in this manual. Follow the associated guidelines to avoid hazards.
Danger
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:
Notes provide additional information that is important.
Tip:
Provides programing tips and shortcuts that may save time.
12 Revision F
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
Mounting on a VAV terminal box
Connecting room temperature sensors
Revision F 13
Section 2: Installing the controllers KMC Controls, Inc.
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
14
To set the rotational limits, do the following
1. Turn the controller over so you have access to the back.
2. Manually rotate the actuator fully clockwise as viewed from the back.
3. Remove the stop screw from its storage location and clean any debris from the threads.
4. Insert the screw into the correct stop position hole.
5. Tighten the screw only until the head touches the plastic in the bottom of the recess.
Mounting on a VAV terminal box
Mount the controller inside of a metal enclosure. To maintain RF emissions specifications, use either shielded connecting cables or enclose all cables in conduit.
Mount the controller directly over the damper shaft. A minimum shaft length of 2.0 inch
(51 mm) is required.
Note:
SimplyVAV controllers are designed to directly mount to 3/8 to 5/8 inch (9.5 to 16 mm) round or 3/8 to 7/16 inch (9.5 to 11 mm) square damper shafts.
Revision F
SimplyVAV
Illustration 2–2 Controls and indicators
Status LEDs
Gear clutch button
Mounting tab
Mounting bushing
COMM
READY
AI1
GND
AO3
AO4
AI5
AI6
GND
AI7
SC
BO5
BO6
BO7
SC
BO8
24VAC
BACnet MS/TP
ON CTS
1 2
Drive hub and V-bolt
Section 2: Installing the controllers
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.
Connecting an airflow sensor
An airflow sensor is incorporated as one of the inputs to the controller. Remove the plugs and connect the tubing from the pitot assembly to the airflow sensor inputs next to the drive hub.
Illustration 2–3 Airflow sensor inputs
COMM
READY
ON CTS
1 2
BACnet MS/TP
24VAC
Total airflow (high) Static airflow (low)
Revision F 15
Section 2: Installing the controllers KMC Controls, Inc.
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
Connecting inputs and outputs
SimplyVAV series controllers have preconfigured inputs and outputs to support only the supplied programs and applications.
l
For input and output connection information, see the topic
Application drawings on page 44 .
l
To connect room temperature sensors, see the topic
l
To connect a DAT sensor, see the topic
Connecting a DAT sensor on page 18
.
l
For the BACnet object descriptions of the inputs and outputs, see the topic
16 Revision F
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.
l
STE-6010 l
STE-6014 l
STE-6017 l
STE-8001 l
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 F 17
Section 2: Installing the controllers KMC Controls, Inc.
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.
l
For DAT limiting and reheat, install the sensor in the airflow after the reheat unit. See the topic,
to enable discharge air temperature control.
l
When the DAT sensor is used only to detect primary air temperature, the sensor can be placed in either location shown in the illustration
Discharge air temperature sensor location
Illustration 2–6 Discharge air temperature input details
T
COMM
READY
AI1
GND
AO3
AO4
18 Revision F
SimplyVAV
Connecting power
The controllers require a 24 volt, AC power source. Use the following guidelines when choosing and wiring transformers to the controller.
l
Use a Class–2 transformer of the appropriate size to supply power to the controller.
l
KMC Controls recommends powering only one controller from each transformer.
l
Do not run 24 volt, AC power from within an enclosure to external controllers.
Connect the 24 volt AC power supply to the power terminal block on the lower right side of the controller. Connect the ground side of the transformer to the ground terminal and the
AC phase to the phase terminal. Power is applied to the controller when the transformer is connected to power.
Illustration 2–7 Controller power terminals
Section 2: Installing the controllers
24 VAC
Class 2
Blue
Brown
AI5
AI6
GND
AI7
SC
BO5
BO6
BO7
SC
BO8
COMM
READY
AI1
GND
AO3
AO4
24VAC
BACnet MS/TP
ON CTS
1 2
Revision F 19
Section 2: Installing the controllers KMC Controls, Inc.
Maintenance
SimplyVAV controllers require no routine maintenance. If necessary, clean with a damp cloth and mild soap.
20 Revision F
SimplyVAV
S e c t i o n 3: Ch an gi 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 setpoint value.
4. Press the
Set
Point button to save the value or advance to the next function.
Changing room setpoints
Procedure
1
Starting display
2
Enter Password 1.
To enter or change the active setpoints you may need Password 1.
Tip:
Once the following procedure is started, all steps must be completed in order.
Steps
Start from the temperature display.
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
72
12S1
PSW1
OOOO
Revision F 21
Section 3: Changing the room setpoint
Changing room setpoints (continued)
Procedure Steps
Note: If Password 1 has not previously been entered, the display will change to the occupied cooling setpoint display after Step
1.
STE display
KMC Controls, Inc.
3
Set the active cooling setpoint.
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.
745
COOLING
4
Set the active 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.
685
HEATING
22 Revision F
SimplyVAV
S e c t i o n 4: Co n f i gu 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.
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.
l
Details about the VAV terminal unit including the configuration for fans and reheat.
l
An STE-8001 or STE-8201 to use as a configuration tool.
l
The building automation system plans for controllers connected to a network.
Users may change the active heating and cooling setpoints without accessing the configuration functions. This procedure is covered in the topic
Note:
The instructions for the configuration functions cover all of the functions that an STE-8000 sensor can set up in the SimplyVAV series of controllers. Not all functions are available on every model of controller.
Configuration topics
Getting started with configuration
Entering system temperature setpoints and limits
Configuring the VAV Box options
Revision F 23
Section 4: Configuring the controllers KMC Controls, Inc.
Getting started with configuration
For access to the configuration functions you will need Password 2.
l
If the controller has not been previously set up, no password is required.
l
A new Password 2 can be entered or changed in the advance functions. See the topic
Enter the configuration mode
Procedure
1
Starting display
Detailed steps
1. Start at the temperature display.
2. Press the and buttons together.
l
If Password 2 is not required, the display changes to
CNFG
.
l
If required, enter Password 2. The display changes to CNFG when Password 2 is correct.
STE display
72
12S1
2
Enter Password 2.
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
3
Select a configuration function.
Note: If Password 2 has not previously been entered the display will change to the
CNFG display after Step 1.
Access to the configuration functions always start at the
CNFG display.
CNFG
24 Revision F
SimplyVAV Section 4: Configuring the controllers
Entering system temperature setpoints and limits
The system temperature setpoints set the operational parameters and limits for the VAV terminal unit.
The temperature setpoints include the following items.
l
Minimum cooling and maximum heating setpoints l
Occupied and unoccupied cooling setpoints l
Occupied and unoccupied heating setpoints l
Changeover differential setpoint l
Standby differential setpoint
Setting the temperature setpoints requires entering Password 2 which is described in detail in the topic
Getting started with configuration on page 24 .
Tip:
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
If Password 2 is not required, the display changes to CNFG .
l
If required, enter Password 2. The display changes to CNFG when Password 2 is correct.
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
CNFG options.
The display changes to STPT .
3. Press the
Set
Point button to select STPT . The display changes to MIN .
STPT
3
Set the minimum cooling setpoint.
This setpoint limits the lowest temperature that a user can enter as the active setpoint.
MIN
68O
Revision F 25
Section 4: Configuring the controllers
Procedure to set the temperature setpoints (continued)
Procedure Detailed steps
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
KMC Controls, Inc.
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.
MAX
78O
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.
OCCL
74O
6
Set the occupied heating setpoint.
Note: This setpoint can also be changed as described in the topic
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.
OCHT
7OO
Note: This setpoint can also be changed as described in the section
26 Revision F
SimplyVAV
Procedure to set the temperature setpoints (continued)
Procedure Detailed steps
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.
Section 4: Configuring the controllers
STE display
UNCL
8OO
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.
UNHT
62O
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.
CHNG
74
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.
DIFF
O5
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.
OS
Revision F 27
Section 4: Configuring the controllers
Procedure to set the temperature setpoints (continued)
Procedure Detailed steps
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: l
BOX
,
FLOW
,
ADVC
, or
RSTR options l
BACK to choose another configuration function.
l
EXIT to return to the temperature display.
STE display
KMC Controls, Inc.
STPT
2. Press the
Set
Point button to select the next function.
28 Revision F
SimplyVAV Section 4: Configuring the controllers
Configuring the VAV Box options
The box options set the controller for the specific mechanical installation of the VAV terminal unit. The box options include the following items.
l
The K-factor for the VAV terminal unit. If the K-factor is not available, see the topic
.
l
Reheat configuration (optional) l
Fan configuration (optional) l
Direction of damper to close
Setting the box options requires entering Password 2 which is described in the topic
started with configuration on page 24
.
Tip:
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.
STE display
72
2. Press the and buttons together.
l
If Password 2 is not required, the display changes to
CNFG
.
l
If required, enter Password 2. The display changes to
CNFG when Password 2 is correct.
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
CNFG options.
The display changes to STPT .
STPT
3. Press the or buttons to change the display to BOX .
BOX
4. Press the
Set
Point button to select
BOX
.
Revision F 29
Section 4: Configuring the controllers
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
KMC Controls, Inc.
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.
REHT
NONE
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.
6
Set the fan option.
Not used in all models.
2. Press the
Set
Point button to save the reheat option and advance to the next function.
1. Press the or buttons to choose one of the following fan options.
None—No fan is connected to the controller.
Series—The VAV unit includes a series fan.
Parallel—The VAV unit includes a parallel fan.
FAN
NONE
30 Revision F
SimplyVAV
Procedure to set the box functions (continued)
Procedure Detailed steps
Section 4: Configuring the controllers
STE display
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.
CCW—The actuator turns counterclockwise to close the damper.
CW—The actuator turns clockwise to close the damper.
DDIR
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: l
STPT , FLOW , ADVC . or RSTR options l
BACK to choose another configuration function l
EXIT to return to the temperature display.
2. Press the
Set
Point button to select the next function.
BOX
Revision F 31
Section 4: Configuring the controllers KMC Controls, Inc.
Set the airflow setpoints
The airflow setpoints set the airflow limits for the VAV terminal unit.
l
Airflow heating and cooling minimum and maximum limits l
Auxiliary flow setpoint (optional) l
Minimum and maximum fan speeds (optional)
Setting the airflow setpoints requires entering Password 2 which is described in the topic
Getting started with configuration on page 24 .
Note:
If the VAV unit is a heat only or cooling only unit, the airflow setpoints for the unused mode must be set within the range of the mode in use. Failure to set the unused setpoints correctly will result in unpredictable or erroneous air balancing settings.
Tip:
Once the following procedure is started, all steps must be completed in order.
Procedure to set the airflow setpoints
Procedure Detailed steps
1
Starting display
1. Start at the temperature display.
STE display
72
2. Press the and buttons together.
l
If Password 2 is not required, the display changes to
CNFG
.
l
If required, enter Password 2. The display changes to
CNFG when Password 2 is correct.
12S1
PSW2
OOOO
2
Select the flow setpoint display.
1. From the
CNFG display, press the or buttons to show the
CNFG display.
CNFG
2. Press the
Set
Point button to select the
CNFG options.
The display changes to
STPT
.
STPT
3. Press the or buttons to change the display to
FLOW
.
FLOW
4. Press the
Set
Point button to select
FLOW
. The display changes to
MNCL
.
32 Revision F
SimplyVAV
Procedure to set the airflow setpoints (continued)
Procedure Detailed steps
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.
Section 4: Configuring the controllers
STE display
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.
MXCL
3SO
5
Set the axillary airflow setpoint.
Not used for all models.
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.
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.
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.
8
Set the minimum 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.
AUXF
200
MNHT
OO
MXHT
3SO
MINF
2O
Revision F 33
Section 4: Configuring the controllers
Procedure to set the airflow setpoints (continued)
Procedure Detailed steps
9
Set the maximum limit for fan speed.
Not used for all models.
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.
10
Set the dual duct minimum airflow.
Not used for all models.
STE display
KMC Controls, Inc.
MAXF
1OO
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.
DLMN
1OO
11
Select a new configuration function or exit.
1. Press the or buttons to select one of the following: l
STPT
,
BOX
,
ADVC
, or
RSTR options l
BACK to choose another configuration function
EXIT
.
FLOW
2. Press the function.
Set
Point button to select the next
34 Revision F
SimplyVAV Section 4: Configuring the controllers
Advanced options
The advanced options set up passwords and special features in the controller.
l
Establish or change Password 1 and Password 2 l
Set timers for standby and override (optional) l
Enable automatic occupancy (optional) l
Enable discharge air temperature control (optional) l
Calibrate the sensor
Setting the advance options requires entering Password 2 which is described in the topic
Getting started with configuration on page 24 .
Tip:
Once the following procedure is started, all steps must be completed in order.
Table 4–1 Procedure to set the advanced options
Procedure Steps
1
Starting display
1. Start at the temperature display.
STE display
72
2. Press the and buttons together.
l
If Password 2 is not required, the display changes to
CNFG
.
l
If required, enter Password 2. The display changes to
CNFG when Password 2 is correct.
12S1
PSW2
OOOO
2
Select the advanced display.
1. From the
CNFG display, press the
Set
Point button to show the STPT display.
CNFG
STPT
2. Press the or buttons to change the display to
ADVC
.
ADVC
3. Press the
Set
Point button to select
ADVC
.
Revision F 35
Section 4: Configuring the controllers
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.
KMC Controls, Inc.
STE display
PSW1
OOOO
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.
PSW2
OOOO
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.
OVRD
3O
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.
15
7
Set discharge air temperature limiting.
Not used for all models.
Required for reheat.
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.
DAT
DISABLE
36 Revision F
SimplyVAV
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.
Section 4: Configuring the controllers
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
For a low input reading enter a positive correction value.
l
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.
OO
CALIB
10
Select a new configuration function or exit.
1. Press the or buttons to select one of the following: l
STPT
,
FLOW
,
BOX
, or
RSTR options l
BACK to choose .another configuration function l
EXIT to return to the temperature display.
ADVC
2. Press the function.
Set
Point button to select the next
Revision F 37
Section 4: Configuring the controllers KMC Controls, Inc.
Restore Application
Choose the RSTR function to reset the SimplyVAV controller to the original configuration and settings. Use it also to change the units of measure to display on a SimplyVAV sensor.
There are two versions of the application program in the controller.
l
The Metric version displays temperature in Celsius and uses metric values for units of measure.
l
The English version displays temperature in Fahrenheit and uses English values for units of measure.
Access to the Restore Application function requires entering Password 2 which is described in the topic
Getting started with configuration on page 24 .
Tip:
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.
STE display
72
2. Press the and buttons together.
l
If Password 2 is not required, the display changes to CNFG .
l
If required, enter Password 2. The display changes to
CNFG when Password 2 is correct.
12S1
PSW2
OOOO
2
Select the restore settings display.
1. From the CNFG display, press the or buttons to show the
CNFG display.
CNFG
2. Press the
Set
Point button to select the CNFG options.
The display changes to
STPT
.
STPT
38 Revision F
SimplyVAV
Procedure to restore application (continued)
Procedure Detailed steps
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.
Section 4: Configuring the controllers
STE display
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 F 39
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.
The airflow balancing procedure described in this section requires the following items.
l
A flow hood or other accurate method to measure airflow.
l
An STE-8001 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.
l
The engineering design specifications for the minimum and maximum airflow setpoints.
l
Password 2 which is described in the topic
Getting started with configuration on page
Note:
If the VAV unit is a heat only or cooling only unit, the airflow setpoints for the unused mode must be set within the range of the mode in use. Failure to set the unused setpoints correctly will result in unpredictable or erroneous air balancing settings. See
for the procedure to adjust the setpoints.
Note:
Starting the balancing procedure erases all previous airflow correction factors. The airflow readings displayed by the STE-8001 are the actual uncorrected airflow readings as measured by the controller.
Tip:
Once the following procedure is started, all steps must be completed in order.
Table 5–1 The airflow balancing procedure
Procedure Steps
1
Starting display
1. Start at the temperature display.
STE display
72
2. Press the and buttons together.
l
If Password 2 is not required, the display changes to CNFG .
l
If required, enter Password 2. The display changes to CNFG when Password 2 is correct.
12S1
PSW2
OOOO
Revision F 40
Section 5: Balancing airflow
The airflow balancing procedure (continued)
Procedure Steps
2
Select the CNFG display.
1. From the CNFG display, press the or buttons to advance to COMM and the BLNC display.
KMC Controls, Inc.
STE display
CNFG
COMM
BLNC
2. Press the
Set
Point button to select
BLNC
. The display advances to PRI .
PRI
3. Press the
Set
Point button to select
PRI
.
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
Set
Point button to advance to the entry display.
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
.
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.
PMIN
OO
41 Revision F
SimplyVAV
The airflow balancing procedure (continued)
Procedure Steps
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
.
Section 5: Balancing airflow
STE display
5
Advance or exit
1. Press the or buttons to select one of the following: l
SEC to balance the secondary VAV for dual duct systems. Choosing SEC advances to the
SMAX display. This is available only on dual duct models.
l
BACK to choose another commissioning function l
EXIT to return to the temperature display.
PRI
SEC
6
Measure and enter the actual maximum secondary airflow
2. Press the
Set
Point button to select the next function.
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.
SMAX
OO
Revision F 42
Section 5: Balancing airflow
The airflow balancing procedure (continued)
Procedure Steps
2. With a flow hood, measure the actual airflow.
3. Press the
Set
Point button to advance to the entry display.
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
.
7
Measure and enter the actual minimum secondary airflow
STE display
KMC Controls, Inc.
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 .
SMIN
OO
8
Advance or exit
1. Press the or buttons to select one of the following: l
PRI to balance the primary VAV for dual duct systems l
BACK to choose another configuration function.
l
EXIT to return to the temperature display.
SEC
2. Press the
Set
Point button to select the next function.
43 Revision F
SimplyVAV
S e c t i o n 6: A p p l i c at i o n d r awi n gs
This section covers the drawings, materials, and instructions for specific VAV applications.
Each SimplyVAV model is designed for a specific set of applications. The following topics are for control technicians and engineers that will plan for and install controllers for
SimplyVAV applications.
Submittal sheets for all of these applications are available from the Resources page at www.SimplyVAV.com
.
Application drawings in this section
Cooling or heating without reheat
Revision F 44
Section 6: Application drawings
Cooling or heating without reheat
The BAC-8001 is configured for single-duct cooling VAV control without reheat. Connect the controller as shown in the illustration
Cooling or heating application drawing on page 45
. 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
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
KMC Controls, Inc.
Duct
Temp
Sensor
24 VAC
SC
BO5
BO6
BO7
SC
BO8
AI5
AI6
GND
AI7
COMM
READY
AI1
GND
AO3
AO4
24VAC
BACnet MS/TP
ON CTS
1 2
45 Revision F
SimplyVAV
Duct
Temp
Sensor
Fan
Speed
24VAC
Fan start
Reheat
Stage 1
Stage 2
Stage 3
24 VAC
Staged reheat
This application is for BAC-8005 or BAC-8205 controllers. The controllers are configured to switch reheat units that are controlled with 24 volts AC. Reheat units with up to three stages of reheat can be controlled by these controllers.
l
For one-stage or electric reheat or hot water reheat with an on/off valve, use only output terminal BO6.
l
For two-stage reheat use output terminals BO6 and BO7.
l
For three-stage reheat use output terminals BO6, BO7, and BO8.
For cooling and heating, a duct temperature sensor is required for Discharge Air Temperature limiting and automatic changeover. See the topic
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.
l
The fan start circuit is a 24 volt AC pilot duty output.
l
The fan speed output is 0-10 volts DC.
Submittal sheets for several variations of this application are available from the Resources page at www.SimplyVAV.com
.
Illustration 6–2 BAC-8005 and BAC-8205 with three-stage reheat
Section 6: Application drawings
AI5
AI6
GND
AI7
SC
BO5
BO6
BO7
SC
BO8
COMM
READY
AI1
GND
AO3
AO4
24VAC
BACnet MS/TP
ON CTS
1 2
Revision F 46
Section 6: Application drawings
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
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.
l
The fan start circuit is a 24 volt AC pilot duty output.
l
The fan speed output is 0-10 volts DC.
Submittal sheets for several variations of this application are available from the Resources page at www.SimplyVAV.com
.
Illustration 6–3 Modulating reheat
KMC Controls, Inc.
Duct
Temp
Sensor
Analog
Heat
Fan
Speed
0-10 VDC
24VAC
Fan start
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
47 Revision F
SimplyVAV
Duct
Temp
Sensor
Fan
Speed
24VAC
Fan start
24VAC THERMAL
ACTUATOR
24 VAC
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
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.
l
The fan start circuit is a 24 volt AC pilot duty output.
l
The fan speed output is 0-10 volts DC.
Submittal sheets for several variations of this application are available from the Resources page at www.SimplyVAV.com
.
Illustration 6–4 Time proportional reheat
Section 6: Application drawings
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 F 48
Section 6: Application drawings
Floating reheat
This application is for a BAC-8005 or BAC-8205 controller. Use the floating reheat option in hydronic systems that are controlled by an actuator with tri-state 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
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.
l
The fan start circuit is a 24 volt AC pilot duty output.
l
The fan speed output is 0-10 volts DC.
Submittal sheets for several variations of this application are available from the Resources page at www.SimplyVAV.com
.
Illustration 6–5 Floating reheat
KMC Controls, Inc.
Duct
Temp
Sensor
Fan
Speed
ON CTS
1 2
24VAC
Fan start
Open
Close
Common
AI5
AI6
GND
AI7
COMM
READY
AI1
GND
AO3
AO4
SC
BO5
BO6
BO7
SC
BO8
24VAC
BACnet MS/TP
24 VAC
49 Revision F
SimplyVAV Section 6: Application drawings
Dual-duct application
This application is for a BAC-8007 controller. The controller is configured for dual-duct operation. Dual-duct VAV requires a TSP-8001 actuator to be used with the BC-8007 as shown in the illustration
Dual-duct wiring diagram on page 50 .
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 F 50
SimplyVAV
S e c t i o n 7: S e 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.
Discharge Air Temperature (DAT) limiting
Revision F 51
Section 7: Sequences of operation KMC Controls, Inc.
Input sources
The SimplyVAV controllers require specific sensors to measure room temperature, airflow, and discharge air temperature. All sensors are automatically detected and the programming is automatically set up for the sensors.
l
SimplyVAV digital wall sensors l
STE-6000 series thermistor temperature sensors l
Discharge air temperature sensor l
Airflow sensors and pickups
SimplyVAV digital wall sensors—The SimplyVAV digital wall sensors include a room temperature sensor, a digital display, and a push button interface for entering setpoints and configuring the controllers. If a SimplyVAV digital wall sensor is detected, the sensor's temperature is mapped to the Space Temperature Reference value object as the temperature input value. See the topic
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
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
for additional information on value objects.
Models STE-6014 and STE-6017 also include a dial for adjusting the setpoint . If either of these two sensors is detected, the dial position sets the Active setpoint a few degrees above or below the Occupied setpoint.
The STE-6017 includes a button that when pushed will override the unoccupied state. This is described in the topic
Occupancy sequence on page 52 .
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 56
and
Airflow sensors and pickups—VAV airflow is calculated by measuring the high and low duct pressures with the built-in airflow sensor which is connected to airflow pickup tubes.
The high and low pressure measurements along with the K-factor of the VAV terminal unit are used to calculate the airflow through the VAV unit.
Occupancy sequence
A SimplyVAV controller is designed to operate as a stand-alone controller and determine occupancy based only on the availability of primary airflow and motion in the zone. The controller can be in any one of the following occupancy states.
52 Revision F
SimplyVAV
Revision F
Section 7: Sequences of operation l
l
l
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
for details.
Automatic occupancy
If Automatic Occupancy is enabled, the controller will automatically toggle between
Unoccupied, Occupied, and Standby based on the presence of primary airflow and motion in the zone.
The default for Automatic Occupancy is Disabled. See the topic
to change Automatic Occupancy.
Occupied
For controllers without a connected motion sensor, the controller changes to Occupied upon the detection of primary airflow.
Controllers with a connected motion sensor change to Occupied upon the detection of primary airflow and motion in the space. The unit will remain in the OCCUPIED state as long as periodic motion is detected and primary airflow continues. If motion stops, the controller changes to STANDBY.
Unoccupied
The controller Occupancy mode changes to UNOCCUPIED when it detects a loss of primary airflow. While in the UNOCCUPIED state, the controller will fully open the damper in an attempt to reach the maximum airflow setpoint.
Loss of primary airflow is defined as less than 25% of the requested flow for at least 5 minutes. The Occupancy mode changes to Occupied or Standby once the actual airflow is at least 30% of the requested flow.
Standby
In units with a connected motion sensor, the controller starts in STANDBY and changes to
OCCUPIED after detecting motion in the space. Motion in the space is 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.
53
Section 7: Sequences of operation KMC Controls, Inc.
l
Active cooling l
Occupied cooling l
Unoccupied cooling l
Standby cooling l
Active heating l
Occupied heating l
Unoccupied heating l
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
.
Active setpoint—The active setpoint is the current setpoint. The active setpoint is determined by the following.
l
If the space is occupied, the controller uses the occupied setpoint as the active setpoint.
l
If a STE-6014 and STE-6017 is connected, the Active setpoint is set by the dial to be a few degrees above or below the Occupied setpoint. The range of adjustment is set by the variable STBY OFFSET. The dial setting does not change the setpoint when in the
Unoccupied or Standby state.
l
If the space is unoccupied the controller uses the unoccupied setpoint as the active setpoint.
l
If controller is in standby, the controller calculates the standby setpoint.
l
A user with Password 1 can enter an active setpoint from a SimplyVAV digital wall sensor. This entry will change the occupied setpoint within the setpoint limits.
Occupied setpoint—A temperature setpoint entered by the controls technician during controller setup and system commissioning. This is the setpoint used when the controller is occupied which is determined by primary airflow and, on controllers equipped with motion sensors, motion in the zone.
Unoccupied setpoint—A temperature setpoint entered by the controls technician during controller setup and system commissioning. This is the setpoint used when the system is unoccupied .
Standby setpoint—The standby setpoint is used when the controller is in the standby state.
It is a value calculated from the occupied setpoint and the variable STBY OFFSET. The standby offset value is entered by the controls technician during controller setup and system commissioning. See the topic
Occupancy sequence on page 52 .
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
54 Revision F
SimplyVAV
Revision F
Section 7: Sequences of operation
70° F. If the user lowers the Occupied Cooling setpoint to 71° F, the controller recalculates the Occupied Heating setpoint and changes it to 67° F.
PID control loops
A PID control loop calculates an error value from the difference between the measured room temperature and the active setpoint. The error value is expressed as a percentage and is typically used in a BAS controller to control the state of an output. When the difference between the setpoint and room temperature is large, the 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.
l
The heating PID loop.
l
The cooling PID loop.
l
The discharge air temperature (DAT) loop.
For SimplyVAV controllers, the output of either the cooling and heating PID loop is used to calculate the position of the damper. If present, the DAT input and DAT loop controls the
Reheat loop.
The PID loops in the SimplyVAV controllers are standard BACnet objects and are described in the topic
.
Airflow setpoints sequence
Airflow Setpoint is calculated based on the demand for cooling or heating depending on whether the Cooling loop or Heating loop is greater than zero.
If no room sensor is connected to the controller, the controller uses the Minimum Cooling
Airflow setpoint to maintain airflow.
Cool Air Sequence
As the Cooling loop increases from 0% to 100%, Primary Airflow
Setpoint is proportionally calculated between Minimum Cooling Airflow and Maximum
Cooling Airflow.
If there is a call for reheat to maintain room temperature, the primary airflow is set to the value of Auxiliary Flow.
Warm Air Available
In the heating mode, as the Heating Loop increases from 0% to 100%,
Primary Airflow Setpoint is proportionally calculated between Minimum Heating Airflow and
Maximum Heating Airflow.
See also the topics,
and
.
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
55
Section 7: Sequences of operation KMC Controls, Inc.
Temperature is above the SAT Changeover Temp plus 2° Fahrenheit, the SAT Changeover
Mode is set to HEAT. The default changeover temperature is 74° Fahrenheit.
See the topic
Discharge Air Temperature (DAT) limiting on page 56
and
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.
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
and
56 Revision F
SimplyVAV Section 7: Sequences of operation
System diagnostics
The controller programming includes four system diagnostic indicators in the form of BACnet value objects.
l
Need for higher static pressure
l
l
l
These diagnostic indicators or flags are monitored by other BACnet devices connected to the same building automation system as the controller. How the indicators are used is beyond the scope of these instructions.
Need for higher static pressure
The Need Higher Static value object is set to TRUE (1) when the damper is fully open and airflow cannot reach the required setpoint value.
Need for cooler supply air
The Need Cooler Supply value object is set to TRUE (1) when the damper is fully open and the Cooling loop is greater than 95% for 30 minutes. The indicator changes to FALSE (0) when the Cooling loop falls below 90%.
Need for warmer supply air
The Need Warmer Supply value object is set to TRUE (1) when the damper is fully open and the Heating loop is greater than 95% for 30 minutes. The indicator changes to FALSE (0) when the Heating loop falls below 90%.
Need AHU start
The Need AHU Start value object is set to TRUE (1) for any of the following conditions.
l
The system mode is UNOCCUPIED and the Cooling loop or the Heating loop reaches
100%.
l
The system mode is OCCUPIED.
l
The system mode is STANDBY.
The Need for AHU Start object changes to FALSE (0) when both loops drop below 5%.
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Section 7: Sequences of operation KMC Controls, Inc.
Damper operation
Damper movement is determined by comparing the actual airflow reading to the airflow setpoints. If the actual airflow is within 5% of the setpoint, no damper action is initiated.
Once within the 5% deadband, the actual airflow must be outside a 7% deadband before damper position changes.
To improve stability near setpoint, the damper motor is pulsed when the actual flow rate is within 15% of the requested flow rate. The pulse rate is 5 seconds and the duty cycle is controlled by analog variable MOTOR PAUSE. In addition, the motor will pause for 10 seconds before the damper changes direction.
Fan operation
The SimplyVAV controllers support both series and parallel fan powered VAV units. For either type of fan operation, the fan is controlled through the following terminals.
l
A binary output triac controls a 24-volt fan starting circuit. See the topic
for the procedure to configure the controller for a fan.
l
A 0-10 volt DC analog output controls the speed of the fan. The output controls fan speed at either Min Fan Speed or Max Fan Speed. See the topic
for the procedure to set the fan speeds.
If the VAV unit is not configured for a fan, the two outputs are not used and remain inactive regardless of the occupancy state.
Series Fan
If the controller is configured for a series fan, any time the Occupancy mode of the controller is set to either OCCUPIED or STANDBY, the fan runs continuously. The fan speed is set to
Maximum Fan Speed when the state is OCCUPIED and set to Minimum Fan Speed when the state is STANDBY.
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
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Section 7: Sequences of operation
Parallel Fan
If the controller is configured for a parallel fan, any time the Occupancy mode of the controller is set to either OCCUPIED or STANDBY and there is a call for heat, the fan runs continuously. The fan starts when the Heating loop is greater than 5% and stops when the
Heating loop is less than 1%.
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.
l
l
l
l
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 55 .
l
If Discharge Air Temp Limiting is enabled, reheat is controlled by the DAT PID loop.
l
If DAT control is not enabled, reheat is controlled by the Heating loop.
In the following descriptions, the loop controlling reheat is referred to as the Reheat loop.
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 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
for an application drawing.
59
Section 7: Sequences of operation
Illustration 7–4 Modulating reheat operation
100
HTG %
KMC Controls, Inc.
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 60 .
See the topic
for an application drawing.
Table 7–1 Staged reheat thresholds
Output state
Heating stages
On threshold Off threshold
Stage 1 35% 15%
Stage 2
Stage 3
65%
95%
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 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 48
for an application drawing.
60 Revision F
SimplyVAV
Revision F
Illustration 7–5 Time proportional reheat operation
100
HTG %
Section 7: Sequences of operation
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
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
Balancing airflow sequence
Balancing airflow is the process of calibrating the internal airflow sensor to a known standard. In the field, airflow is measured with an airflow hood or other measuring instrument and then compared to the airflow measurements from the sensor in the controller. The balancing process uses an STE-8001 or STE-8201 as the technicians setup tool for initiating the balancing sequence and entering actual flow measurements.
When the balancing sequence starts, all other functions of the controller are locked out.
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Section 7: Sequences of operation KMC Controls, Inc.
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
for the procedure to balance the airflow with an
STE-8001.
Dual duct
A dual duct installation consists of separate primary heating and cooling ducts, both with control dampers and airflow monitoring. For this type of installation a SimplyVAV BAC-8007 controls the cooling air (primary) damper and a TSP-8001 actuator controls the heating air
(secondary) damper.
l
As the space temperature rises above the cooling setpoint, the primary airflow is modulated from the Cooling Minimum flow to the Cooling Maximum Flow.
l
As the space temperature falls below the heating setpoint, the secondary airflow is modulated from the Heating Minimum flow to the Heating Maximum Flow.
l
Between the heating and cooling setpoints, both the primary airflow and secondary airflow are modulated to maintain the Dual Duct Minimum airflow.
See the topic,
Dual-duct application on page 50
for an application drawing.
Illustration 7–7 Dual duct sequence
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
62 Revision F
SimplyVAV
S e c t i o n 8: S y s t e m i n t e gr at i o n an d n e t wo r k i 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.
l
Detailed plans and drawings for the building automation system.
l
Information about the facility LAN including routers, switches, and network firewalls.
l
Sequences of operation for other BACnet devices that will monitor or interact with
SimplyVAV controllers.
Integration topics
Connecting to an MS/TP network
Setting up network communications
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
up network communications on page 66
.
Illustration 8–1 MS/TP network wiring and EOL switches
Revision F
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 grounded shield
EOL switches ON
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
Mid line controller
EOL switches OFF
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 open shield
EOL switches ON
63
Section 8: System integration and networking
Connections and wiring
KMC Controls, Inc.
Use the following principles when connecting a controller to an MS/TP network: l
Connect no more than 128 addressable BACnet devices to one MS/TP network. The devices can be any mix of controllers or routers.
l
To prevent network traffic bottlenecks, limit the MS/TP network size to 60 controllers.
l
Use twisted pair, shielded cable with capacitance of no more than 51 picofarads per foot for all network wiring. Belden cable model #82760 meets the cable requirements.
l
Connect the -A terminal in parallel with all other - terminals.
l
Connect the +B terminal in parallel with all other + terminals.
l
Connect the shields of the cable together at each mid line controller. For SimplyVAV controllers use the S terminal.
l
Connect the shield to an earth ground at one end only.
l
Use a KMD–5575 repeater 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.
l
Place a KMD–5567 surge suppressor in the cable where it exits a building.
End of line termination switches
The controllers on the physical ends of the EIA-485 wiring segment must have end of line termination added for proper network operation.
l
For controllers at the end of the network set the EOL switches to On l
For mid line controllers at the end of the network set the EOL switches to Off
Network bulbs
SimplyVAVcontrollers include network bulbs located near the MS/TP network connector.
These bulbs serve three functions: l
Removing both bulbs will disconnect the controller from the MS/TP network.
l
If one or both bulbs are lit, it indicates the network connection or controller power is not properly wired.
l
If the voltage or current on the network exceeds safe levels, the bulbs may open and protect the controller from damage.
Bulbs are illuminated
If one or both bulbs are illuminated, it indicates the network is not phased correctly. The ground potential of the controller is not the same as other controllers on the network. The brighter the isolation bulbs on a controller are illuminated, the closer that controller is to the source of the problem. Remove power and check the network and power connections.
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.
64 Revision F
SimplyVAV Section 8: System integration and networking
Bulbs not inserted correctly
the socket.
One lead from one or both of the bulbs are not inserted into
Revision F 65
Section 8: System integration and networking KMC Controls, Inc.
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
started with configuration on page 24
.
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
If Password 2 is not required, the display changes to CNFG .
l
If required, enter Password 2. The display changes to CNFG when Password 2 is correct.
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
Set
Point button. The display changes to
DID .
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
.
D ID
OO72O69
4
Enter the MAC address.
1. Press the or buttons to change the MAC address.
2. Press the
Set
Point button to save the selected MAC address.
The display changes to
BAUD
.
MAC
11
66 Revision F
SimplyVAV
Procedure to set up network communications (continued)
Procedure Detailed steps
5
Enter the baud
Section 8: System integration and networking
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
COMM 1. Press the or buttons to select one of the following: l
BLNC or CNFG options l
EXIT to return to the temperature display.
2. Press the
Set
Point button to select the next function.
Revision F 67
Section 8: System integration and networking KMC Controls, Inc.
BACnet objects
The SimplyVAV controllers are BACnet Application Specific Controller (ASC) that are composed of standard BACnet objects. This section lists the objects that are likely to be monitored by a standard BACnet operator workstation to verify system operation.
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 44
.
Table 8–2 Input objects
Input
AI1
Name Description
DISCHARGE AIR Discharge Air Temperature
AI2
AI3
AI4
AI5
SPACE SENSOR
SETPOINT
OFFSET
SECONDARY
DUCT
Space Sensor
Setpoint Offset
PRIMARY DUCT Primary Duct Pressure
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
Table 8–3 Output objects
Output Name
AO3
AO4
ANALOG HEAT
FAN SPEED
BO1
BO2
BO5
DAMPER CW
DAMPER CCW
FAN
Description
Analog Heat
Fan Speed
Damper Clockwise
Damper Counter Clockwise
Fan
Units
0_100%
0_100%
68 Revision F
SimplyVAV Section 8: System integration and networking
Output objects (continued)
Output Name
BO6 HT STAGE 1
BO7
BO8
HT STAGE 2
HT STAGE 3
Description
Heating Stage 1
Heating Stage 2
Heating Stage3
Description
Space Temperature
Setpoint Offset
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 Offset
Minimum Cooling Flow
Maximum Cooling Flow
Minimum Heating Flow
Maximum Heating Flow
Auxiliary Flow
Primary K Factor
Primary Correction Slope
Primary Correction Offset
Units
Value objects
BACnet value objects represent setpoints or other operational conditions in the controller.
Note:
Not all objects are present in every model.
AV14
AV15
AV16
AV17
AV18
AV19
AV20
AV6
AV7
AV8
AV9
AV10
AV11
AV12
AV13
Table 8–4 Analog value objects
Object Name
AV1 SPACE TEMP
AV2
AV3
AV4
AV5
STPT OFFSET
ACT COOL STPT
ACT HEAT STPT
OCC CL STPT
OCC HT SPT
UNOCC CL STPT
UNOCC HT STPT
MIN CL STPT
MAX HT STPT
MIN STPT DIFF
STBY OFFSET
MIN COOL FLOW
MAX COOL FLOW
MIN HEAT FLOW
MAX HEAT FLOW
AUXILIARY FLOW
PRI K FACT
PRI CORR SLOPE
PRI CORR OFFST
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Section 8: System integration and networking
Analog value objects (continued)
Object Name
AV21 PRI LO FLOW CORR
AV22
AV23
AV24
AV32
PRI FLOW STPT
PRI RAW FLOW
PRI ACTUAL FLOW
MIN FAN SPEED
AV33
AV36
AV37
AV38
AV39
AV40
AV43
AV44
MAX FAN SPEED
DAT STPT
SAT CHANGEOVER
LOCAL OVRD TIME
STANDBY TIME
STANDBY TRIGGER
MEASURED MAX
MEASURED MIN
AV45
AV47
AV48
AV49
AV50
AV51
AV54
AV55
AV56
PRI SAVE MIN FLO
DAT MAXIMUM
CW DMP POS
CCW DMP POS
DAMPER POSITION
ApplicationID
MOTOR PAUSE
CHNG_OVER_DELAY
LOW AUTO OCC
Description
Primary Low Flow Correction
Primary Flow Setpoint
Primary Raw Flow
Primary Actual Flow
Minimum Fan Speed
Maximum Fan Speed
Discharge Air Temp Setpoint
SAT Changeover Temperature
Local Override Timer
Standby Timer (motion)
Standby Trigger
Measured Maximum
Measured Minimum
Primary Saved Minimum Airflow
Maximum DAT Setpoint
CW Damper Position
CCW Damper Position
Damper Position
Analog Value #54
Cooling Change Over Delay
Low Limit for Auto Occupy
KMC Controls, Inc.
Table 8–5 Binary value objcts
Object Name
BV1
BV2
NEED AHU
NEED COLDER SPLY
BV3
BV4
BV5
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
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SimplyVAV
Binary value objcts (continued)
Object Name
BV6 MOTION SENSOR
BV7
BV8
BV9
BV10
NEED HOTTER SPLY
CHANGE OVER MODE
DAT LIMITING
CLOCKWISE CLOSE
BV11
BV12
BV13
BV14
AUTO OCCUPANCY
BALANCE MODE
DAT SENSOR
PRI BAL TRIGGER
Section 8: System integration and networking
Description
Motion Sensor (Wall Stat)
Need For Hotter Air Supply
SAT Changeover Mode
Discharge Air Temp Limiting
Clockwise Close
Auto Occupancy Detection
Balance Mode
DAT Sensor Present
Primary Balance Trigger
Table 8–6 Multistate value objects
Object Name
MSV1 OCCUPIED MODE
MSV2 FAN CONFIG
MSV3 REHEAT
MSV6 WALL SENSOR
Description
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
LOOP1 CL LOOP
LOOP2 HT LOOP
LOOP3 DAT Loop
Description
Cooling Loop
Heating Loop
Discharge Air Temp Loop
Revision F 71
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.
7
8
5
6
Table A–1 Start point K factors
Duct size in inches K-factor, CFM
4 265
357
460
652
890
9
10
12
14
16
24 x 16
1145
1443
1972
2771
3741
6980
59
86
111
208
19
27
34
43
K-factor, LPS
8
11
14
Revision F 72
SimplyVAV
I n d e x
A
actuator
mounting 14 rotation limits 14
shaft size 7 specifications 7 speed 7
airflow
maximum limit 32 minimum limit 32
cooling only without reheat 45 cooling/heating without reheat 45
staged reheat 46 three-stage reheat 46
automatic occupancy
auxillary flow
B
BAC-8001
cooling only 45 cooling/heating 45
BAC-8005
balancing
Revision F
bulbs
C
calibration
connecting
input devices 16 output devices 16
D
damper
discharge air temperature
dual duct
E
F
fans
parallel sequence 58 series sequence 58
with time proportional reheat 48
73
Index
I
inputs
K
K-factor
M
N
network
bulbs 63 termination 63 wiring 63
O
occupied
outputs
override
P
parallel fan
passwords
74
PID loops
R
reheat
S
sensors
input sources 52 motion detection 52 occupancy 52
setpoints
limits sequence 53 room temperature sequence 53 sequence 53
KMC Controls, Inc.
Revision F
SimplyVAV setting
changeover 25 limits 25 occupied 25
shaft size for actuator 7 specifications 7
standby
T
U
unoccupied
V
W
wiring
Revision F
Index
75
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Key features
- Easy to configure and use
- BACnet Application Specific Controllers
- Multiple application programs
- Integrated actuators
- Internal airflow sensors
- Multiple inputs and outputs
- Airflow balancing capability
- Occupancy setback
- System diagnostic indicators
- Dual-duct VAV heating and cooling