Honeywell CT70 Wiring Manual page 10

1
2
3
4
Typical wiring hookup of CT70 with jumper intact.
10
4
X L
W2
3
R
G
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
REMOVE W1-Y1 JUMPER WHEN HEAT RELAY 1 IS USED.
WHEN L TERMINAL IS CONNECTED TO SYSTEM MONITOR, EM. HEAT. LED
ALSO INDICATES COMPRESSOR MALFUNCTION.
X TERMINAL MUST BE CONNECTED FOR PROPER OPERATION.
CHANGEOVER
RELAY (COOL)
AUX. HEAT
SYSTEM
RELAY
MONITOR
CHANGEOVER
RELAY (HEAT)
B
2
E
W1
O
Y1
HEAT RELAY 1
COMPRESSOR
CONTACTOR
L1
(HOT) L2
1
FAN RELAY
EM. HEAT
RELAY
M8504