Radio Thermostat CT80 Install Manual page 16

W Y R G
n n
Multi-stage Heat and Multi-stage Cool
The CT80 can handle up to 3 stages of HEAT and 2 stages of COOL.
STEP 1 - Connect the W, W2 and W3 wires to the W terminals. This
connects the stages of HEAT.
STEP 2 - Connect the Y and Y2 wires to the Y terminals.
This connects the stages of COOL.
STEP 3 - STEP 5 - Connect the R (or RH) wire to the RH
terminal. This connects the power.
STEP 4 - Connect the G wire to the G terminal. This connects the fan.
STEP 5 - Connect the C wire to the C terminal.
Your HVAC system is now connected to the CT80.
Please Go To Page 6
STEP 1 - Connect O wire to the O terminal or B wire to the B. This connects the change-over valve.
If you have both O and B - connect only the O wire to the O terminal and DO NOT connect B to B
terminal (see wire reference under Trane for B wire terminal).
STEP 2 - Connect the Y wire(s) to the Y terminal(s).
This connects the compressor (stages).
STEP 3 - Connect the R (or RH) wire to RH.
This connects the power.
STEP 4 - Connect the G wire to the G. This connects the fan.
STEP 5 - Connect the C wire to the C terminal.
Your HVAC system is now connected to the CT80.
Please Go To Page 6
Heat Pump (heat/cool) without Auxiliary Heat
HVAC SYSTEM
W
C W
POWER
C H B O W W2 W3 Y Y2 RH RC G A DH EX
THERMOSTAT TERMINALS
HVAC SYSTEM
C B O Y Y
POWER
or
C H B O W W2 W3 Y Y2 RH RC G A DH EX
THERMOSTAT TERMINALS
PG PG
W
Y Y R G
2
2 3
R
R
C and H
connected
R G
2
or
R
C and
connected
16 16
R
H