Robertshaw 8401 Thermostat User Manual


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5
Hot
Heating
Control
Cooling
Control
Transformer
T
H
E
R
M
O
S
T
A
T
W1
C
R
Y1
G
O
B
24 VAC
120 VAC
HEAT/COOL
4-WIRE
SINGLE TRANSFORMER
Fan
Control
Hot
Heating
Control
Transformer
24 VAC
120 VAC
HEAT ONLY
2-WIRE
SINGLE TRANSFORMER
W1
Y1
G
T
H
E
R
M
O
S
T
A
T
O
B
C
R
Hot
Heating
Control
Fan
Control
Transformer
24 VAC
120 VAC
HEAT ONLY
SINGLE TRANSFORMER
3-WIRE
W1
Y1
G
T
H
E
R
M
O
S
T
A
T
O
B
C
R
♦ Wiring Diagrams
110-1087B.qxd 3/4/05 4:00 PM Page 5
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