Zonex GEN III VVT Series User guide

GEN III - VVT
A MODULATING SYSTEM
INSTALLATION AND APPLICATIONS MANUAL
VOTE BASED AUTO CHANGEOVER VAV
with WIRELESS PROGRAMMABLE THERMOSTATS
68°
70°
75°
72°

System Operation
Component Selection
Sequence Of Operation
System Schematic Overview
1
OVERVIEW
GEN III Controller
Communicating Damper Board
Wireless Thermostat
2
SYSTEM COMPONENTS
GEN III Controller
Damper 1 Installation
Thermostat Installation / Battery Replacement
3
INSTALLATION INSTRUCTIONS
Sync Dampers To Wireless Zone Thermostats
Sync Monitor Thermostat To GEN III Controller
Confirm Communications
Set Unit Type
Set Clock
Set High / Low Limits
Set Fan Operation
4
COMMISSIONING AND START UP
Confirm Cool Call And Damper Operation
Confirm Heat Call And Damper Operation
Auxiliary Heat / Reheat / W1 First Operation
Supplemental Heat – Wiring Options
5
CONFIRM SYSTEM OPERATION
Set Thermostat Display Modes
Thermostat Operation – End User Guide
Zone Set Up Menu
Monitor Thermostat Configuration
Set Schedules
Lock Thermostats, Master Temperature Set
System Diagnostic, High / Low Limit
Second Stage Delay, Override Hours, Priority Vote
Fan Mode, Unit Type, Sync Monitor, Maverick Call
System Air Balance, Temp Format, Clock, Password
Number Of Dampers, LAT Calibration, Morning Warm Up
Manufacturer’s Default
Wireless Remote Sensor
6
THERMOSTAT OVERVIEW AND OPERATION
Round And Rectangular Sizing And Selection
Slaving Zone Dampers
7
ZONE DAMPERS
Slaving Bypass Dampers
IPC – Static Pressure Controller
3
4
5
6
7
8
9
10
12
13
14
15
16
16
17
17
18
18
19
20
21
22
23
24
26
27
28
29
30
31
32
33
34
35
37
40
42
43
8
BYPASS DAMPERS
9
TROUBLESHOOTING
10
SYSTEM SET UP DIRECTORY
11
FINAL SYSTEM REVIEW
3
7
10
14
18
22
37
41
45
48
49
TABLE OF CONTENTS
2

PULL 24V POWER AND UNSHIELDED TWISTED PAIR
DAISY CHAINED FROM DAMPER TO DAMPER
UP TO 20 DAMPERS
24VAC / 40VA
TRANSFORMER
24VAC / 40VA
TRANSFORMER
BYPASS DAMPER
1
ZONE
DAMPER
2
ZONE
DAMPER
3
ZONE
DAMPER
4
ZONE
DAMPER
LEAVING
AIR SENSOR
STATIC
PRESSURE
SENSOR
GEN III – VVT
CONCEPTUAL
DRAWING ONLY
Refer to System
controller section for
wiring information.
SYSTEM OVERVIEW
GEN III – VVT is a commercial modulating zone control system controlling 2-20 independent zones per unit
utilizing wireless Zonex thermostats. The GEN III controller is designed for Auto Changeover, multi-stage Heat
Pump (2C/3H) or Gas Electric (2C/2H) applications.
Sophisticated, integrated software in the wireless thermostat allows for a wide range of system control and
changeover strategies, allowing the contractor to tailor the GEN III system to a specific application.
Additional features include LED status indication of all system functions, digital leaving air temperature, return
air temperature and outside air temperature display, fully adjustable capacity control with on-board limit
settings and optional staging strategies. An integrated clock allows for setup and night setback scheduling,
globally or individually available for each wireless thermostat, with selectable 2 to 8 hour override, along with
a unique feature to remotely lock each thermostat independently in the system.
The system provides the installing contractor with a simple startup diagnostic to minimize wiring errors and
speed installation.
GEN III is recognized as the Industry's easiest zone control system to install and wire. The GEN III System
operates over an unshielded-two-wire data link, along with two 24 VAC power wires all daisy chained from
damper to damper with no home run wiring required. Wireless thermostats do not require hardwire power or
wiring between the thermostats and dampers. Each Wireless thermostat is synced with its corresponding
modulating damper providing effective temperature control throughout the system.
SYSTEM OVERVIEW
3

GEN III-VVT
with Wireless Thermostats
SYSTEM COMPONENTS
COMPONENT SELECTION OVERVIEW
GEN III Controller
Part # - GEN III
1 - Per RTU or Split System
Supports 2 - 20 Fully Modulating Zones
Daisy Chain: Belden 8740 Communications wire and 24VAC from Damper to Damper
1-24VAC / 40VA Transformer Powers the GEN III and All the Dampers in the System
GEN III Wireless Thermostat
Part # - WSTAT
1 - Thermostat per Damper
Modulating Zone Dampers
Part #
WST + Damper Size - Round Damper (up to 1.75 S.P.)
WCD + Damper Size - Rectangular Dampers (up to 1.75 S.P.)
Electronic Bypass Damper
Part #
STBP + Damper Size - Round Bypass Dampers
STCDBP + Damper Size - Rectangular Bypass Dampers
1-24 VAC / 40VA Transformer to Power Bypass Damper
For assistance, contact Zonex at [phone]
or visit zonexproducts.com for more information
Slave up to 3 Zone Dampers per Stat
Use STMPD or STCD Damper for Slaves
(Includes Integrated Static Pressure Control)
4

SEQUENCE OF OPERATION
GEN III– VVT
GEN III controller wires to the HVAC unit with legacy style connections Y1, Y2, W1, W2, OB, G, R. Once every
minute the controller communicates to each damper via RS485 connection daisy chained along with 24 V of power
wired damper to damper. Each damper is equipped with a damper board ID and synced to its wireless
programmable thermostat, installed within 100 feet of the communicating damper board in the system.
The GEN III is an auto changeover, vote based VVT system. As thermostats call for heating or cooling, votes are
tallied at the GEN III controller; and, based on the majority of votes received, the HVAC unit operates in the mode
of majority votes. If majority changes, the system controller will automatically initiate a changeover sequence with
built in time delays to protect the equipment before changing over to the new mode of operation.
When the last calling zone is satisfied in either heat or cool mode, the GEN III controller will terminate the HVAC
outputs after the next “poll”; and the blower output will be de-energized (unless controller is configured for
constant fan) after a 4-minute purge cycle. During the purge cycle no heat or cool calls are recognized.
The wireless zone thermostats control and modulate the zone dampers based on variance from set point to a
position that will match the supply load to the demand requirement. When the HVAC unit is running, if a zone
thermostat is not calling or is calling for the opposite mode, its corresponding damper fully closes. When the
HVAC unit is not running, the thermostats open to the Vent mode to provide ventilation, if the indoor blower fan is
running continuously.
While the HVAC unit is running, the capacity control LAT device monitors the leaving air temperature from the
HVAC unit and will cycle the HVAC unit to maintain the air temperature with a preset range to eliminate coil
freeze-up and premature heat exchanger failure. When the system is in the heating mode and a majority vote
changes to cooling, a changeover timer begins and will run heating for 5 minutes or until heat call is satisfied and
then cycle into a changeover purge. After a 4-minute purge cycle, Cooling is turned on until the cool call is satisfied
or there is a majority vote for heat received by the GEN III controller. If all calls have been satisfied, after the 4
minute off delay, dampers will modulate to approximately 40% open position for ventilation mode.
The system fan/blower operation can be configured for ON or intermittent AUTO operation. The controllers are
shipped from the factory for Auto fan operation. The only time the fan will run is when there is a call from the
controller for heating or cooling. If the system is configured for fan ON operation, the fan will run continuously
during occupied time and intermittently during unoccupied time.
All zone thermostats are synced or paired with its respective modulating zone damper, which is equipped with
antenna and communicating damper board. One zone thermostat in the system shall be enabled as the Monitor
thermostat and synced with the GEN III controller to interact and initiate control decisions for the system. The
Monitor shall establish global or individual schedules for the system, lock thermostats individually and provide
minimal local adjustment, establish master temperature settings individually or globally for the system, and
provide diagnostic functions to streamline system troubleshooting. Air balance shortcuts, along with password
protection, are also enabled at the Monitor thermostat. Sleep and energy saving modes are available to extend
battery life and enhance operation.
Voting demand strategy can be enhanced by adding Priority votes or by giving a NULL vote to individual
thermostats in the system, thereby weighting certain zones more than others. Priority votes allow you to select 0, 1,
2, or 3 additional votes for a thermostat that has unusual loads, like a conference room. A change to 0 for priority in
that zone stat configuration will create a NULL vote for HEAT/COOL and will not allow the stat to place a call for heat
or cool, but will allow damper operation based on system mode of operation, HEAT/COOL/VENT.
The GEN III provides effective temperature control and minimizes wiring issues by using wireless programmable
zone thermostats. No computer or software tools are required for installation, commissioning or servicing the
system.
Vote Based Auto Changeover Bypass VAV with Programmable Wireless Thermostats
5

GEN III-VVT
VOTE BASED AUTO CHANGEOVER VAV
WITH WIRELESS THERMOSTATS
DEVICE ID DESCRIPTION
CONTROL BOARD C1
GEN III CONTROLLER
CONTROLS 2-20 ZONE DAMPERS ONLY 1 24VAC 40VA TRANSFORMER
POWERS ALL SUPPLY DAMPERS
THERMOSTAT T1 -T20 ZONEX WIRELESS THERMOSTAT
REMOTE SENSOR RS ZONEX WIRELESS REMOTE SENSOR
SYSTEM TRANSFORMER TR1
24VAC/40VA TRANSFORMER SIZED @ (2VA PER ZONE DAMPER)
DAISY CHAIN DAMPER TO DAMPER
BYPASS TRANSFORMER TR2 IND. 24VAC/40VA TRANSFORMER TO POWER THE BYPASS DAMPER
SUPPLY / RETURN AIR
LAT DISCHARGE SENSORS LAT SUPPLY LAT LOCATED BEFORE THE BYPASS. RETURN LAT
LOCATED AFTER THE BYPASS
ZONE DAMPER MOTOR DM SUPPLIED WITH ZONE DAMPER (FACTORY PRE-WIRED)
INTEGRATED
STATIC PRESSURE CONTROL IPC SUPPLIED WITH THE ZONEX BYPASS DAMPER (FACTORY PRE-WIRED)
SPT
STATIC PRESSURE TUBE LOCATED AFTER THE BYPASS BEFORE THE FIRST SUPPLY TAKEOFF
BYPASS DAMPER MOTOR BP-DM SUPPLIED WITH ZONEX BYPASS DAMPER (FACTORY PRE-WIRED)
VISIT OUR ON-LINE CATALOG AT ZONEXPRODUCTS.COM
FOR APPLICATIONS ASSISTANCE CALL 800-228-2966
RS485 COMMUNICATION LINK
WIRELESS COMMUNICATION COMMUNICATES WITH WIRELESS DAMPER BOARD AND THERMOSTAT
TWISTED PAIR WIRING -BELDEN 8740 DAISY CHAIN DAMPER TO DAMPER
GEN III-VVT
POWER SWITCH ID / SYNC
24VAC IN
24VAC OUT
TO UNIT TERMINALS
RS485 COMMUNICATION LINK ( BELDEN 8740)
STATUS LIGHTS
AUX SENSOR (AS)
LEAVING AIR SENSOR (LVAIR)
OUTSIDE AIR SENSOR (OA)
RETURN AIR SENSOR (RA)
DAISY CHAIN 24VAC AND
DATALINK CABLE (BELDEN 8740)
TO ALL ZONE DAMPER BOARDS -
EXPANDABLE TO 20 ZONES
C1
MODULATING DAMPER
DM-1
C
C
R
R
RX
RX
TX
TX
MC
RO
RC
C
AUX
MODULATING DAMPER
DM-4
C
C
R
R
RX
RX
TX
TX
MC
RO
RC
C
AUX
MODULATING DAMPER
DM-3
C
C
R
R
RX
RX
TX
TX
MC
RO
RC
C
AUX
MODULATING DAMPER
DM-2
C
C
R
R
RX
RX
TX
TX
MC
RO
RC
C
AUX
MC
RC
RO
MC
RC
RO
MC
RC
RO
MC
RC
RO
6

Controller Description
The GEN III is a micro-controller based, auto
change-over Universal Gas/Electric or Heat Pump
system controller (Part #GEN III ). The GEN III controls a
zoned 2H/2C Gas/Electric HVAC unit or 3H/2C zoned
Heat Pump unit and communicates with and supports up
to 20 zones, utilizing pressure dependent, modulating
dampers and wireless thermostats. The GEN III gathers
information every 60 seconds from each damper board
while the wireless thermostats communicate with the system over a two-wire data link directing control based
decisions to the HVAC equipment. The GEN III is powered with one 24 V 40VAtransformer, which also
powers all dampers in the system. Power from the controller, along with a two-wire twisted pair
communications loop, is daisy chained damper to damper to streamline installation and system
communications. The GEN III is equipped with integrated capacity control and High and Low temperature
limits to protect the compressor and heat exchanger. Outside air and return air sensors are also provided.
The HVAC unit is staged based on leaving air temperature and time. Auto change-over operation is vote
based, predicated on a first call, first served majority wins on changeover algorithm. Additional control
strategies are established on a Monitor Thermostat which initiates control decisions with the GEN III system
controller. Review controller terminal connections on the exhibit below:
AB C
D
E
F
G
H
I
J
K
AUX SENSOR (AS)
LEAVING AIR SENSOR (LVAIR)
OUTSIDE AIR SENSOR (OA)
RETURN AIR SENSOR (RA)
TO UNIT TERMINALS
COMMUNICATION LINK (BELDEN 8740)
24VAC IN
24VAC OUT
ID / SYNC
POWER SWITCH STATUS LIGHTS
A. On/Off Switch
B. ID/Sync Button and Communication link light
C. Unit Status Lights
D. 24vac IN to power the GEN III board
E. 24vac OUT daisy chained out to the damper boards
F. Unit Terminals
G. RX/TX communication link (Belden 8740)
H. Aux Sensor (AS)
I. Leaving Air Sensor (LVAIR)
J. Outside Air Sensor (OA)
K. Return Air Sensor (RA)
GEN III CONTROLLER
GEN III– VVTSYSTEM COMPONENTS
7

GEN III– VVT
COMMUNICATING DAMPER BOARD
A damper board resides on each zone damper to carry power and communications information from the
damper to the GEN III controller. The damper control board has four LED lights providing damper and system
information.
The BLUE LED (R) confirms communications and to sync the damper with its associated thermostat.
The RED LED (U) is illuminated when the damper is modulating to the closed position.
The GREEN LED (T) is illuminated when the damper is modulating to the open position.
The YELLOW LED (S) is illuminated when AUX heating is calling.
Once all dampers and the GEN III controller are wired into the system and the GEN III controller is turned ON,
the BLUE light will flash 4 times when communicating with the GEN III controller, and 2 times when the
damper control board communicates with the wireless thermostat.
The damper control board can be removed by slipping the mount away from the damper hat section,
simplifying wiring from the GEN III controller and AUX heat if utilized.
Each damper control board must be synced with its respective thermostat. Once the damper is energized
and associated thermostat has its ID set, press the ID button on the damper control board until blue light
flashes continuously and then press the YES button on the wireless thermostat which will display
“SYNC SUCCESSFUL”.
L - RX/TX IN communication link( Belden 8740)
daisy chained into damper board
M - RX/TX OUT communication link( Belden 8740)
daisy chained out to the next damper board
N - R/C 24vac IN daisy chained into damper board
O - R/C 24vac OUT daisy chained out to the next
damper board
P - MC/RO/RC Factory wired to the damper
actuator runs open, runs closed
Q - C/AUX wire in the base board heat,
electric heat or reheat if available
R - COMM LINK BLUE LED indicates communication
to the GEN III and thermostat
S - AUX/REHEAT YELLOW LED indicates Aux heat or
Reheat is energized
T - RUN OPEN GREEN LED indicates the damper is
being powered open
U - RUN CLOSED RED LED indicates the damper is
being powered closed
V - SYNC BUTTON used to sync to wireless
thermostat
W - NOT USED on GEN III system DISCHARGE AIR
SUPPLY AIR DUCT
MC
RC
RO
ACTUATOR
C
C
R
R
RX
RX
TX
TX
MC
RO
RC
C
AUX
TS
TS
SYNC
BUTTON
N
O
L
M
P
Q
W
V
RS TU
8

Sequence of operation
COOL CALL
When zone temperature rises 1 or more degrees above COOL set point, thermostat transmits COOL call to
communicating damper board and GEN III controller. GEN III controller evaluates calls for HEAT and COOL
for majority vote. If there is a majority vote for COOL, GEN III controller initiates a call for cooling and the
damper modulates open. ON will be displayed and will flash until system is operating in the COOL mode.
Once system is in COOL mode, ON will remain constant. When zone temperature lowers to COOL set point,
COOL call is terminated and damper closes.
HEAT CALL
When the zone temperature falls greater than 1 degree below HEAT set point, thermostat will initiate a call
for HEAT. On the next poll, wireless thermostat will transmit HEAT call to the communicating damper board
and GEN III controller. GEN III controller will evaluate all calls for HEAT and COOL in the system and if there
is a majority of calls for HEAT, GEN III controller will initiate heat call and ON icon will appear below the set
point. ON icon will flash until system is operating in the HEAT mode. Once system is in the HEAT mode, ON
will remain constant. Damper will modulate open and warm air will heat zone. As zone warms, thermostat
will communicate with damper relay and damper will modulate to maintain zone comfort. When zone
temperature rises to set point, damper is closed or at minimum position and WSTAT releases call for HEAT.
Baseboard HEAT
When wireless thermostat is configured for BASEBOARD heat, when zone temperature falls greater than 2
degrees below HEAT set point, AUX is energized and BASEBOARD heat is operating, ON will be displayed.
When zone temperature rises to HEAT set point, thermostat will release call for AUX operations.
REHEAT
When wireless thermostat is configured for REHEAT operation, when the zone temperature falls greater than
2 degrees below HEAT set point, thermostat transmits REHEAT call to the communicating damper board to
modulate damper to 40% open and energizes AUX output, ON will be displayed. When zone temperature
rises to HEAT set point, thermostat satisfies, releases call for AUX REHEAT and closes damper.
VENT
When all calls for HEAT or COOL are satisfied, dampers will modulate to approx. 40% open and VENT will be
displayed on thermostat indicating system is in ventilation mode.
WSTAT – Wireless GEN III Modulating Thermostat
The WSTAT wireless thermostat is used in conjunction with the modulating damper to communicate calls for
HEAT/COOL/VENT to the GEN III controller. Once the wireless thermostat is synced with its damper, the
thermostat is polled each minute and sends information to the communicating damper board and then to
GEN III controller. GEN III controller evaluates the information and determines if a majority of calls are for
HEAT or COOL, or if no calls are present VENT Mode.
To turn the wireless stat on, press and hold the AUTO/OFF button for 15 seconds. When OFF is displayed, press
and hold OFF button for 15 seconds until AUTO is displayed, release button, stat is in AUTO mode. If AUTO is
displayed press AUTO button for 15 seconds until OFF is displayed, release button, stat is in OFF mode.
Note: Mount wireless thermostat within 100 feet of the communicating damper board
GEN III WIRELESS THERMOSTAT
GEN III– VVT
9

Wire Unit to GEN III Controller
Using standard 18 ga. thermostat wire, connect GEN III unit outputs to HVAC unit. Standard HVAC
control terminal designations are used, R Y1 Y2 W1(O/B) W2 G, and energize HVAC unit.
1. Gas/Electric Wiring
Gas/Electric systems use the same terminal designations, R power (24 volt), Y1 Cooling first stage, Y2
Cooling second stage, W1 Heating first stage, W2 Heating second stage and G Fan. From the GEN III
controller, wire each required terminal, R on GEN III to R on HVAC unit, Y1 on GEN III to Y1 on HVAC unit,
Y2 on GEN III to Y2 on HVAC unit (if used) the W1 on GEN III to W1 on HVAC unit, W2 on GEN III to W2 on
HVAC unit (if used) and G on GEN III to G on HVAC unit.
2. HEAT PUMP Wiring— O/B operation
Heat Pump systems use the following terminal designations, R power (24 volt), Y1 Compressor first stage,
Y2 Compressor second stage, O/B (W1) reversing valve, W2 Heating Auxiliary (3) stage, G Fan. From the
GEN III controller, wire each required terminal, R on GEN III to R on HVAC unit, Y1 on GEN III to Y1 on
HVAC unit, Y2 on GEN III to Y2 on HVAC unit (if used), O/B (W1) on GEN III to O on HVAC unit, W2 on GEN
III to W2 on HVAC unit (if used) and G on GEN III controller to G on HVAC unit.
Note: 1. Many systems are single stage and will not use Y2 or W2 terminals for operations.
Please confirm your system operation to ensure proper wiring.
2. For Heat Pump applications with Gas/Electric inputs, set system for gas operation and reset high limit to 115 degrees.
GEN III CONTROLLER
POWER SWITCH
ID / SYNC
24VAC IN
24VAC OUT
TO UNIT TERMINALS
RS485 COMMUNICATION LINK ( BELDEN 8740)
AUX SENSOR (AS)
LEAVING AIR SENSOR (LVAIR)
OUTSIDE AIR SENSOR (OA)
RETURN AIR SENSOR (RA)
INSTALLATION INSTRUCTIONS
GEN III– VVTINSTALLATION INSTRUCTIONS
STATUS LIGHTS
10

Install Leaving Air Temperature Sensor (LAT) (I) to the LVAIR terminals on the GEN III controller and place
the sensor in the supply duct prior to the bypass takeoff. Install Return Air Temperature Sensor (LAT) (K) to
the RA terminals on the GEN III controller and place the sensor in the return duct after the bypass takeoff.
(Note: If extension of wire is needed, 18 ga. thermostat wires may be used).
GEN III– VVT
GEN III CONTROLLER
POWER SWITCH
ID / SYNC
24VAC IN
24VAC OUT
TO UNIT TERMINALS
RS485 COMMUNICATION LINK ( BELDEN 8740)
AUX SENSOR (AS)
LEAVING AIR SENSOR (LVAIR)
OUTSIDE AIR SENSOR (OA)
RETURN AIR SENSOR (RA)
(I)
(K)
STATUS LIGHTS
11

GEN III– VVT
Dampers
Install dampers into HVAC duct so damper actuators and control boards are easily accessed. Damper
may be mounted in an area where the ambient temperature is between 32 and 125 degrees Fahrenheit.
Round dampers should be mounted with damper actuators between 9 and 3 O’clock position.
Once GEN III controller and supply dampers are installed, install 24 VAC 40 VA transformer and wire
secondary 24 volts to the C R (IN - D) terminals on GEN III controller. Using 18 ga. thermostat wire, wire C
R (OUT - E) terminals and daisy chain power wires to the first damper. Continue daisy chain wiring from
first damper to second, third, etc., until all supply dampers are wired with power.
Note: Maintain R and C wiring polarity throughout the system to improve communications.
Once power wiring is daisy chained to all supply dampers in the system, use Belden 8740 twisted pair
communications wire to install communications loop. Install communications wire using the RX and TX
(G) terminals on GEN III controller and daisy chain to the first supply damper in the system and wire to RX
TX terminals of the communication damper board. Continue daisy chain to the next damper using RX TX
terminals of communication damper board to the RX TX of the next damper control board, repeating this
process until all supply dampers are wired into the communications loop. Communications wiring is
polarity specific, if RED communications wire is on RX at the GEN III controller, then RED wire is connected
to RX throughout the system.
GEN III CONTROLLER
POWER SWITCH ID / SYNC
24VAC IN
24VAC OUT
TO UNIT TERMINALS
RS485 COMMUNICATION LINK ( BELDEN 8740)
AUX SENSOR (AS)
LEAVING AIR SENSOR (LVAIR)
OUTSIDE AIR SENSOR (OA)
RETURN AIR SENSOR (RA)
DAISY CHAIN 24VAC AND DATALINK CABLE (BELDEN 8740)
TO ALL COMMUNICATING DAMPER BOARDS
EXPANDABLE TO 20 ZONES
MODULATING DAMPER
DM-1
C
C
R
R
RX
RX
TX
TX
MC
RO
RC
C
AUX
MODULATING DAMPER
DM-3
C
C
R
R
RX
RX
TX
TX
MC
RO
RC
C
AUX
MODULATING DAMPER
DM-2
C
C
R
R
RX
RX
TX
TX
MC
RO
RC
C
AUX
MC
RC
RO
MC
RC
RO
MC
RC
RO
(D)
(E)
(G)
DAMPER INSTRUCTIONS
STATUS LIGHTS
12

Battery life indicator is displayed when transitioning
from active mode to sleep mode.
Battery Installation/Replacement
Wireless Thermostat requires two AA batteries. Expected life with thermostat in active operation is 8-9
months or longer based on end user interaction. An energy savings mode is available to prolong battery life
to a year or more. Refer to Zone setup, menu item D for energy saving mode setup. To access batteries,
locate set screw on the bottom of the thermostat. Turn screw clockwise - this will cause the screw to move
into stat sub-base. Once set screw is free of GEN III stat, remove stat from sub-base. Remove batteries from
the back of thermostat and insert replacement batteries; ensuring positive and negative poles match battery
to thermostat. Place thermostat on sub-base and turn set screw counter clockwise to fasten thermostat to
sub-base. Make semi-annual battery changes part of your preventive maintenance on your HVAC
equipment for optimal system operation.
Mounting the WirelessThermostat
Once you have determined where you want to place the
thermostat place the mounting plate in that spot and with a
pencil mark where the drill holes will be. Drill holes using a
1/8 drill bit. Install screw anchors supplied with the
thermostat. Install the screws into the screw anchors half
way and place the mounting plate over the screws. Once
the mounting plate is level tighten the screws down to
secure the plate to the wall. Install the thermostat back on
the mounting plate and turn the flat head screw CCW to
secure the thermostat back to the plate.
Note: Install the thermostat within 100 feet of its
communicating damper board. In some applications,
concrete walls, floors or other dense structures may
interfere with thermostat communications.
Contact factory to review alternatives
[phone]
With a flat head screwdriver unscrew CW to release
the thermostat from the mounting plate.
BOTTOM
+
++
+ +
+_
_ _
AA AA
+_
Replace with AA batteries and install the
thermostat back on the mounting plate.
MOUNTING PLATE
Drill hole hereDrill hole here
SET
MOUNTING AND BATTERY INSTALLATION
GEN III– VVTWIRELESS THERMOSTAT
13

SELECT EXIT
ZONE SETUP
E. SET SYSTEM ID
F. SET STAT ID
SELECT EXIT
ZONE SETUP
E. SET SYSTEM ID
F. SET STAT ID
SAVE EXIT
INACTIVE
STAT ID: 001
SAVE EXIT
SYS ID: 001
COMMISSIONING START-UP
Use the UP or DOWN button to highlight item (E) SET SYSTEM ID and press SELECT. Set the SYSTEM ID to 001
for the first GEN III controller in the building. (If you have more then one GEN III controller in the building you
will need to give each one its own SYSTEM ID ranging from 001-100). Once System ID is set, press EXIT to
SAVE.
While still in the Zone Setup screen, use the UP or DOWN buttons to highlight item (F) SET STAT ID menu item
and then press SELECT. Set STAT ID for the first stat to 001, place provided label #1 on the inside of the
thermostat sub-base (All stats are SYNCED with its damper ID 001 to 020, maximum of 20 zone on one GEN III
system). Once System ID is set, press EXIT to SAVE.
Sync Dampers and Wireless Thermostats
Each Damper will need to be ID’d and Synced with its control thermostat. Beginning with the first damper in
the daisy chain closest to the GEN III controller, place provided label #1 on the damper. Locate associated
zone thermostat and insert batteries, confirm display appears on stat. If no display is seen, check battery
installation. At this time power and turn on the GEN III controller at the ON/OFF switch located on the left
hand corner of the GEN III controller.
On the wireless thermostat, press the MENU button followed by the OFF/AUTO button, release when display
reads ZONE SETUP.
UP
DOWN
Note: You can only Sync one damper at a time.
COMMISSIONING
AND START UP
GEN III– VVT
14

SELECT EXIT
ZONE SETUP
A. SYNCHRONIZE DAMPER
B. CALIBRATE
C. SET AUXILIARY HEAT
D. ENERGY SAVING MODE
SYNC DAMPER?
ID: 01
NO YES
Sync Monitor Thermostat with GEN III Controller
Identify which of the thermostats will be the Monitor Stat and turn ON GEN III Controller (GEN III controller
will flash blue communications light when energized). The monitor will now be the primary user interface to
make and execute control decisions for the system.
On Monitor STAT press the MENU button then SET button and hold both to enter SYSTEM CONFIGURATION
MENU. Use UP or DOWN button to highlight item 11 – SYNC MONITOR and press select, when asked SYNC
MONITOR? Go to the GEN III controller and press the ID button until the BLUE LED flashes continuously.
Press YES on MONITOR STAT, it will take up to 2 minutes for MONITOR to SYNC with GEN III controller. When
MONITOR is synced with GEN III, display will report SYNC SUCCESSFUL.
Note: Only one thermostat in the system can be the MONITOR STAT.
The blue light flashing indicates communication between the GEN III controller and the communicating damper board.
While still in ZONE SETUP use the UP or DOWN to highlight and select item (A) SYNCHRONIZE DAMPER. Go
to the damper control board and press the SYNC button and hold until blue communications light flashes
continuously and then press YES on thermostat to Synchronize. When damper and stat are synced, the
message SYNC IS COMPLETE will be displayed on the thermostat. Press Exit to return to normal operation.
Continue to the next damper and thermostat in daisy chain and repeat increasing stat IDs in numerical order.
Communicating
Damper Board
SELECT EXIT
SYSTEM CONFIGURATION
9) FAN MODE
10) UNIT TYPE
11) SYNC MONITOR
12) MAVERICK
SYNC MONITOR?
NO YES
GEN III-VVT
POWER SWITCH ID / SYNC
24VAC IN
24VAC OUT
TO UNIT TERMINALS
RS485 COMMUNICATION LINK ( BELDEN 8740)
AUX SENSOR (AS)
LEAVING AIR SENSOR (LVAIR)
OUTSIDE AIR SENSOR (OA)
RETURN AIR SENSOR (RA)
GEN III-VVT
ID / SYNC
24VAC IN
24VAC OUT
Note: Before syncing Monitor Thermostat, ensure all thermostats are first synced to their respective damper.
C
C
R
R
RX
RX
TX
TX
MC
RO
RC
C
AUX
TS
TS
SYNC
BUTTON
STATUS LIGHTS
GEN III– VVT
15

ACTIVE CHANNELS :
BACK EXIT
NEXT
1 2 3 4 5 6 7 8 9 10 11
SELECT EXIT
SYSTEM CONFIGURATION
1) SCHEDULE
2) LOCK
3) MASTER TEMP SET
4) SYSTEM DIAGNOSTIC
SELECT EXIT
SYSTEM CONFIGURATION
9) FAN MODE
10) UNIT TYPE
11) SYNC MONITOR
12) MAVERICK
UNIT TYPE
EXIT
GAS
HEAT PUMP OBO
HEAT PUMP OBB
ELECTRIC
GEN III– VVT
COMMISSIONING AND STARTUP
Confirm Wireless Thermostat Communications
Set Type of Unit
Confirm the type of unit the GEN III is controlling, GAS, ELECTRIC, HEAT PUMP (O), or HEAT PUMP (B).
Factory default for UNIT TYPE is GAS, if application is ELECTRIC or HEAT PUMP, MONITOR STAT
configuration is needed. Access the SYSTEM CONFIGURATION on MONITOR STAT, use the UP or DOWN
buttons to highlight Menu Item (10) - Unit Type and press select. Use the UP or DOWN buttons to
highlight type of UNIT, GAS, HEAT PUMP 0, HEAT PUMP B, or ELECTRIC, once highlighted, press select
and save to return to configuration menu.
Note: If RF Error is displayed on the system diagnostic screen, see troubleshooting page
Note: 1. To ensure operation or menu selection is executed, you must exit
the system configuration menu and return to the active thermostat mode.
2. When system is configured for heat pump, High Limit is reset to 115 degrees F.
Once GEN III controller is mounted, Monitor Thermostat is synced with GEN III controller and
associated damper and zone stats are synced with their associated dampers, system is ready to be
commissioned and started up. Prior to wiring control outputs to the HVAC unit, turn on the GEN III
controller and confirm all communicating damper boards are flashing blue lights, this indicates that
all dampers are powered. If damper lights are not flashing, check power wires and confirm
communications wiring.
From the Monitor Thermostat, access SYSTEM CONFIGURATION MENU by pressing and holding
the MENU button and then the SET buttons until SYSTEM CONFIGURATION appears on display.
Release button and use the UP or DOWN button to highlight item (4) SYSTEM DIAGNOSTIC and
press the SELECT button. SYSTEM DIAGNOSTIC menu consists of two diagnostic screens, system
temperatures and number of zones communicating. The first screen provides temperature
information, press NEXT to access number of zones communicating. Each zone ID the system is
communicating with will be displayed on this page. Confirm all zone dampers in the system are
reporting on the MONITOR STAT. If there are missing IDs, check damper and associated
thermostat to confirm ID set up and Sync. This feature will lead to any installation or wiring issues
providing simplified troubleshooting of the system.
16

GEN III– VVT
SELECT EXIT
SYSTEM CONFIGURATION
13) SYSTEM BALANCE
14) TEMP FORMAT
15) CLOCK
16) PASSWORD
SET CLOCK
BACK EXIT
NEXT
02 : 36 PM WED
SET CLOCK
BACK EXIT
NEXT
02 : 36 PM WED
SET CLOCK
BACK EXIT
NEXT
02 : 36 PM WED
SET CLOCK
BACK EXIT
NEXT
02 : 36 PM WED
SELECT EXIT
SYSTEM CONFIGURATION
5) HIGH / LOW LIMIT CTRL
6) SECOND STAGE DELAY
7) OVERRIDE HOURS
8) PRIORITY VOTE
SET LOW CUT-OUT
HIGH EXIT
LOW
45
SET HIGH CUT-OUT
HIGH EXIT
LOW
145
Set Clock
From the MONITOR STAT the master clock is set for all system devices. To set the clock time and day,
access SYSTEM CONFIGURATION Menu on the MONITOR STAT, use the UP or DOWN buttons to highlight
MENU Item 15 — CLOCK and press select. Hour option will be highlighted, use the UP or DOWN button to
change the hour to current hour, once current hour is displayed, press NEXT button to highlight
MINUTES option and use the UP or DOWN button to select current minutes. Once minutes are set press
NEXT button and select AM or PM by using the UP or DOWN buttons, then press NEXT to select the
day of the week using the UP or DOWN buttons to select current day. Once hour, minutes, AM/PM,
and day of week are set press the exit button to save and return to System Configuration Menu.
Confirm High/Low Limits
Factory defaults for GAS/ELECTRIC units are set for 45 degrees Low Limit and 145 degrees High Limit.
Heat Pump O and B machines are set for 45 degrees Low Limit and 115 degrees High Limit. These may be
adjusted in the field to meet unit specification. To confirm or adjust, access the SYSTEM CONFIGURATION
menu on MONITOR STAT, use the UP or DOWN buttons to highlight Menu Item 5 HIGH/LOW LIMIT and press
select. Press HIGH button to show High Limit temperature, press LOW button to show Low Limit temperature.
If adjustment is needed, use the UP or DOWN button to reset temperature. When complete, press exit button
and YES to save settings and return to System Configuration Menu.
17

SELECT EXIT
SYSTEM CONFIGURATION
9) FAN MODE
10) UNIT TYPE
11) SYNC MONITOR
12) MAVERICK
FAN MODE
EXIT
AUTO
FAN MODE
EXIT
ON
SELECT EXIT
SYSTEM CONFIGURATION
1) SCHEDULE
2) LOCK
3) MASTER TEMP SET
4) SYSTEM DIAGNOSTIC
TEMPSET ID
BACK EXIT
NEXT
STAT ID : GLOBAL
NO YES
SELECT GLOBAL ID?
SET OCCUPIED COOL
BACK EXIT
NEXT
OCCUPIED COOL 70
NO YES
SAVE DATA?
GEN III– VVT
Set Fan Operation
Configuration of FAN is set at the factory for AUTO operation, when there is a call for HEAT or COOL, fan will
run. If continuous fan is required, fan will need to be configured for fan ON and will run anytime during
Occupied time, and AUTO during unoccupied. To set fan mode, SYSTEM CONFIGURATION Menu on the
MONITOR STAT, use the UP or DOWN buttons to highlight MENU Item 9 FAN MODE. AUTO or ON will
appear on the display, use the UP or DOWN button to change FAN MODE, when desired mode is displayed
press exit to return to SYSTEM CONFIGURATlON Menu.
Confirm Cool Call and Damper Operation
From the MONITOR STAT access SYSTEM CONFIGURATION Menu and highlight MASTER TEMP SET menu
option and press select. TEMP SET ID will appear on display, using the UP and DOWN buttons, select STAT ID:
GLOBAL and press NEXT button. When prompted with SELECT GLOBAL ID press YES. SET OCCUPIED COOL
- using the UP or DOWN buttons select a temperature lower than building temperature and press EXIT to save
and set all thermostats in cooling mode. Within 2 minutes, a call for cooling will be made from GEN III
controller. Confirm Y1 and G lights are on at the GEN III controller. Go to each zone and confirm damper is
open and “ON” appears on thermostat display indicating an active COOL CALL has been received. Once all
dampers are confirmed open, satisfy cooling calls at each wireless stat. At each zone stat, raise COOL set point
by pressing SET button and using the UP button to raise the set point. Confirm “ON” disappears and damper
closes once call is satisfied. Continue to satisfy all cool calls one at a time until all calls are satisfied and
dampers are closed. If damper does not close confirm wiring installation.
CONFIRM
SYSTEM OPERATION
18

SELECT EXIT
SYSTEM CONFIGURATION
1) SCHEDULE
2) LOCK
3) MASTER TEMP SET
4) SYSTEM DIAGNOSTIC
TEMPSET ID
BACK EXIT
NEXT
STAT ID : GLOBAL
NO YES
SELECT GLOBAL ID?
SET OCCUPIED HEAT
BACK EXIT
NEXT
OCCUPIED HEAT 67
NO YES
SAVE DATA?
HEAT
75
VENT
73
GEN III– VVT
Confirm Heat Call and Damper Operation
From the MONITOR STAT access SYSTEM CONFIGURATION MENU and highlight menu item (3) MASTER
TEMP SET menu option and press select. TEMP SET ID will appear on display, using the UP and DOWN
buttons, select STAT ID: GLOBAL and press NEXT button. When prompted with SELECT GLOBAL ID press
YES. SET OCCUPIED COOL, press NEXT to access SET OCCUPIED HEAT - using the UP or DOWN buttons
select a temperature higher than building temperature and press EXIT to save and set all thermostats in
heating mode. Within 2 minutes a call for heating will be made from GEN III controller and confirm W1 light is
on at the GEN III controller. Go to each zone and confirm damper is open. Once all dampers are confirmed
open, satisfy heating calls at each wireless stat. At each zone stat, lower heat set point by pressing SET button
and using the DOWN button to lower the set point. Confirm “ON” disappears and damper closes once call is
satisfied. Continue to satisfy all heat calls one at a time until all calls are satisfied and dampers are closed. If
damper does not close confirm wiring installation.
Vent
With all calls satisfied all dampers modulate to VENT position, 40% open, confirm stat display
indicates “VENT” and dampers are 40% open.
19