Fresh Air - Radio Thermostat CT80 Install Manual

Humidifier -
To use the CT80 internal humidistat to control an external
humidifier unit, connect it as shown. Connect the H
terminal to the control leg of the humidifier relay. This
allows H to turn the humidifier ON and Off.
DeHumidifier -
To use the CT80 internal humidistat to control an external
dehumidifier unit, connect it as shown. Connect the DH
terminal to the control leg of the dehumidifier relay. This
allows DH to turn the dehumidifier ON and OFF.

Fresh Air -

The Fresh Air feature uses the EX relay to control a baffle
on a fresh external air source. Connect the 24VAC baffle
FOR FRESH AIR BAFFLE
CT80
RH
FURNACE R
POWER
C
to C and EX terminals.
EX
BAFFLE
FOR EXTERNAL HUMIDIFIER
or DEHUMIDIFIER USING
HVAC SYSTEM's 24
CT80
RH
H or DH
FURNACE R
POWE R
C
24VAC
H or DH
RELAY
FOR EXTERNAL HUMIDIFIER
or DEHUMIDIFIER USING
USING 24VAC ADAPTER
CT80
RH
H or DH
FURNACE R
POWER
C
AC
ADPT
18 18
PG PG
VAC
To HUMIDIFIER
or
DEHUMIDIFIER
To HUMIDIFIER
or
DEHUMIDIFIER
H or DH
RELAY