5
Hot
Cooling
Control
Transformer
24 VAC
120 VAC
COOL ONLY
SINGLE TRANSFORMER
2-WIRE
RH
RC
Y1
G
Factory-Installed
Jumper
T
H
E
R
M
O
S
T
A
T
Hot
Cooling
Control
Fan
Control
Transformer
24 VAC
120 VAC
COOL ONLY
SINGLE TRANSFORMER
3-WIRE
RH
RC
Y1
G
Factory-Installed
Jumper
T
H
E
R
M
O
S
T
A
T
♦ Wiring Diagrams
110-1089B.qxd 3/8/05 10:30 AM Page 5