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RT+
RT-
S
G
Y1
Y2
O/B
HRV/ERV
C
RC
RH
W1
W2
AC+
AC-
RCGYWWire1 Wire2
Furnace control board
HRV/ERV
Note: To determine which wires from your ERV/HRV need to be connected to the AC+/AC- terminal
on your T18, You need follow the product prompts to choose 1-wire or 2-wire.
Congratulations, you did it!
Say hi to your new thermostat! To complete your setup and registrations,
follow the instructions on your thermostat screen.
47 48
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