ICM Controls SC 2001 - Page 12

10
4-Wire, Single Transformer
24 VAC
T
H
E
R
M
O
S
T
A
T
R
C
Y
G
120 VAC
HOT
Transformer
Fan
Control
W
B
O
Heating
Control
3-Wire, Single Transformer
24 VAC
T
H
E
R
M
O
S
T
A
T
R
C
Y
G
120 VAC
HOT
Transformer
W
B
O
Heating
Control
Heating Only