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
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