Wiring Diagrams - Robertshaw 8401 User Manual

Wiring Diagrams

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HEAT/COOL
SINGLE TRANSFORMER
Transformer
Hot
24 VAC
120 VAC
HEAT ONLY
SINGLE TRANSFORMER
Transformer
Hot
24 VAC
120 VAC
4-WIRE
Heating
Control
Cooling
Control
Fan
Control
2-WIRE
Heating
Control
T
R
H
C
E
R
W1
M
O
Y1
S
T
A
G
T
O
B
HEAT ONLY
SINGLE TRANSFORMER
Transformer
Hot
24 VAC
120 VAC
R
T
C
H
E
W1
R
M
Y1
O
S
G
T
O
A
T
B
5
3-WIRE
Heating
W1
Control
Y1
Fan
Control
R
T
H
C
E
R
M
O
S
T
G
A
T
O
B