Cool Only - Robertshaw 8401 User Manual

Wiring Diagrams
♦

COOL ONLY

SINGLE TRANSFORMER
Transformer
Hot
24 VAC
120 VAC
HEAT PUMP WITH
HEAT ACTIVE
REVERSING VALVE
Transformer
Hot
24 VAC
120 VAC
NOTE: Make sure the HP switch is in the HP
position. When switched to HP mode,
W1 is connected internally to Y1.
3-WIRE
R
C
W1
Cooling
Y1
Control
Fan
G
Control
O
B
R
C
W1
Compressor
Y1
Contactor
Fan
G
Relay
O
Reversing
B
Valve
(continued)
T
H
E
R
M
O
S
T
A
T
HEAT PUMP WITH
COOL ACTIVE
REVERSING VALVE
Transformer
Hot
24 VAC
120 VAC
NOTE: Make sure the HP switch is in the HP
position. When switched to HP mode,
W1 is connected internally to Y1.
T
H
E
R
M
O
S
T
A
T
6
R
C
W1
Compressor
Y1
Contactor
Fan
G
Relay
Reversing
O
Valve
B
T
H
E
R
M
O
S
T
A
T