TOTALINE P374-1800 - Selecting Heat or Cool Mode

HP
GAS
B
O
ELEC
GAS
(FAN)
W1
Y1
G
R
C
MISC2
W2
MISC1
RS2
RSGND
MISC3
RS+5
RS1
W3
HUM
DEHUM
MISC3 MISC2 MISC1
Y2
(MISC1
ONLY)
INSTALL HUMIDITY
MODULE WITH SENSING
ELEMENT OUTWARD
HUM NO HUM
Y1
G
R
C
MISC2
W1/O/B
MISC1
RS+5
RS1
RSGND
W2
6 Conductor 18 gauge
unshielded cable from the
thermostat to the equipment.
24 vac return
fan relay
compressor relay
1st stage heat circuit
W1
W2
G
R
C
Y1
RS2
6 Wire, 1 Stage Cooling, 1 Stage Heat
24 vac common
2nd stage heat circuit
MISC3
HP
GAS
B
O
ELEC
GAS
(FAN)
Residential & Commercial 1 Stage Cooling,
with 1st stage Gas Heat
Commercial Heat Pump 1 Stage Cooling
with 2 Stage Heat
OR
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TOTALINE
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