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4 Wire HEAT PUMP (heat/cool) without Auxiliary Heat
STEP 1 - Connect O wire to the O or B wire to the B terminal. This connects the change-over valve.
If you have both O and B - connect the O wire to the O terminal.
WARNING: DO NOT connect B to B terminal (see wire reference under Trane for B wire terminal).
STEP 2 - Connect the Y wire to Y terminal. This connects the compressor.
STEP 3 - Connect the R wire to RH. This connects the power.
HEAT PUMP SYSTEM
STEP 4 - Connect the G wire to the G. This connects the fan.
C
O
B
Y
R G
POWER
or
STEP 5 - Set HVAC selection switch to HEAT PUMP and set the HEAT
or
TYPE to ELEC.
Your HVAC system is now connected to the 3M-22.
C B O W
W Y Y
RH RC G A
2
2
Please Go To Page 6
Terminals
5 Wire HEAT PUMP with Auxiliary Heat
STEP 1 - Connect O wire to the O or B wire to the B terminal. This connects the change-over valve.
If you have both O and B - connect O wire to O terminal.
WARNING: DO NOT connect B to B terminal (see wire reference under Trane for B wire terminal).
STEP 2 - Connect the W2 wire to W2 terminal. This connects the auxiliary heat.
STEP 3 - Connect the Y wire to Y terminal. This connects the compressor.
HEAT PUMP SYSTEM
STEP 4 - Connect the R wire to RH terminal. This connects the power.
C
O
B
Y
R G
W2
REMOTE POWER
STEP 5 - Connect the G wire to G terminal. This connects the fan.
or
STEP 6 - Set HVAC selection switches to heat pump and:
or
If you have gas or oil aux heat, set the HEAT TYPE to GAS.
C H B O W
W Y Y
RH RC G A
2
2
If you have electric aux heat, set the HEAT TYPE to ELEC.
Terminals
Your HVAC system is now connected to the 3M-22.
Please Go To Page 6
15
PG
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