
Page 4.3
Air Conditio nin
g
& Heatin
g
4
5 Conductor 18 gauge
unshielded cable from the
thermostat to the equipment.
Residential & Commercial 1 Stage Cooling,
with 1st stage Electric Heat
5 Wire, 1 Stage Cooling, 1 Stage Electric Heat
HP
GAS
B
O
ELEC
GAS
(FAN)
24 vac return
fan relay
compressor relay
1st stage heat circuit
W1
G
R
C
Y1
24 vac common
Y1
G
R
C
W1/O/B
RS+5
RSGND
W2
OUT
HP
GAS
B
O
ELEC
GAS
(FAN)
HUM
NO HUM
W1
Y1
G
R
C
W2
OUT
RSGND
RS+5
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