Honeywell Home Digital Round T8775A Instrucciones De Instalación página 2

T8775A,C THE DIGITAL ROUND
Wiring
IMPORTANT
Use 18-gauge wire to wire the T8775A,C
Thermostats.
All wiring must comply with local electrical
codes and ordinances. Disconnect the power
supply to prevent electrical shock or equipment
damage.
Refer to Fig. 2 through 6 for typical wiring
hookups.
R
1
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
Fig. 2. Typical hookup of T8775A in a heat-only
Rc
2
R
1
VALVE COIL
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
2 FACTORY INSTALLED JUMPER.
Fig. 3. Typical hookup of T8775C in heat-only system
69-1677ES—03
™
W
HEATING
RELAY OR
VALVE COIL
M19513
system.
O
B
G
Y
W
HEATING
FAN
RELAY OR
RELAY
M19514
with fan.
O
Rc
2
R
1
HEATING
RELAY OR
VALVE COIL
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
2 FACTORY INSTALLED JUMPER.
Fig. 4. Typical hookup of T8775C in heat-cool
system with single transformer.
B
Rc
G
2
Y
R
W
HEATING
RELAY OR
1
VALVE COIL
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
REMOVE FACTORY INSTALLED JUMPER BETWEEN R AND R C .
2
Fig. 5. Typical hookup of T8775C in heat-cool
system with two transformers.
4
O
B
Rc
G
2
Y
3
R
W
COMPRESSOR
CONTACTOR
1
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
2 FACTORY INSTALLED JUMPER.
3 USE A JUMPER WIRE (NOT SUPPLIED) TO CONNECT W TO Y.
4 USE EITHER O OR B FOR HEAT PUMP CHANGEOVER.
Fig. 6. Typical hookup of T8775C in single-stage heat
pump system.
2
B
G
Y
W
COMPRESSOR
CONTACTOR
COMPRESSOR
CONTACTOR
FAN
RELAY
HEAT
CHANGEOVER
VALVE
COOL
FAN
CHANGEOVER
RELAY
VALVE
FAN
RELAY
M19515
1
M19517
M19516