2
37-5493B
RH
Y
W
RC
G
Fig. 5 For Oil-Fired installations using low voltage Oil Burner Control
WIRING CONT.
Fig. 3 For installations where heating and cooling systems are powered by same transformer
RH
Y
W
G
RC
Fig. 4 For installations where heating systems are powered by a separate transformer
RH
Y
W
G
RC
THERMOSTAT
SWITCH
FAN
RELAY
COOLING
RELAY
HEATING
SYSTEM
FAN
RELAY
COOLING
RELAY
HEATING
SYSTEM
FAN
RELAY
COOLING
RELAY
24VAC
120VAC
DO NOT USE JUMPER WIRE ON TWO TRANSFORMER SYSTEM
DO NOT USE JUMPER WIRE ON TWO TRANSFORMER SYSTEM
COOLING
TRANSFORMER
TYPE 8A04-1
FAN RELAY
TO T1-T2 TERMINALS
ON OIL BURNER
CONTROL TYPE 668
COOLING
TRANSFORMER
TYPE 8A04-1
FAN RELAY
TYPE 8A04-1
FAN RELAY
HEATING
TRANSFORMER
TRANSFORMER
ADJUSTABLE
HEATING
ANTICIPATOR
SYSTEM
SWITCH
BIMETAL
HEAT
COOL
FAN
SWITCH
COOL
HEAT
HEAT
COOL
OFF
Internal Wiring
Field Wiring
The diagrams given below show the use of White-Rodgers
Heating-Cooling Thermostat Combinations on various systems
that provide the required 24 volt power supply for operating the
coil (blue leads) of the Type 8A04-1 Fan Relay.
All wiring should be done in accordance with local and national electrical codes and ordinances.
THERMOSTAT
SUBBASE
SYSTEM
SYSTEM
SYSTEM
24VAC
120VAC
24VAC
120VAC
SYSTEM
SWITCH
AUTO ON
OFF
24VAC
120VAC
FIELD-INSTALLED
JUMPER
FIXED
COOLING
ANTICIPATOR
