Page 4.3
Air Conditionin
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
(F
A
N
)
24 vac return
fan relay
compressor relay
1st stage heat circuit
W
1
G
R
C
Y
1
24 vac common
Y1
G
R
C
W1/O/B
RS+5
RSGND
W2
OUT
HP
GAS
B
O
ELEC
GAS
(F
A
N
)
H
U
M
N
O
H
U
M
W1
Y1
G
R
C
W2
OUT
RSGND
RS+5
