Honeywell T8775A User Manual download pdf (Page 2)

T8775A,C THE DIGITAL ROUND™ NON-PROGRAMMABLE THERMOSTATS

XX-XXXX—X 2

69-1677EF 2

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.

Fig. 2. Typical hookup of T8775A in a heat-only system.

Fig. 3. Typical hookup of T8775C in heat-only system

with fan.

Fig. 4. Typical hookup of T8775C in heat-cool system

with single transformer.

Fig. 5. Typical hookup of T8775C in heat-cool system

with two transformers.

Fig. 6. Typical hookup of T8775C in single-stage heat

pump system.

POWER SUPPLY. PROVIDE DISCONNECT MEAN

AND OVERLOAD PROTECTION AS REQUIRED.

HEATING

RELAY OR

VALVE COIL

M1951

HEATING

RELAY OR

VALVE COIL

FAN

RELAY

1 POWER SUPPLY. PROVIDE DISCONNECT MEAN

AND OVERLOAD PROTECTION AS REQUIRED.

2 FACTORY INSTALLED JUMPER.

HEATING

RELAY OR

VALVE COIL

COMPRESSOR

CONTACTOR

FAN

RELAY

M1951

1 POWER SUPPLY. PROVIDE DISCONNECT MEAN

AND OVERLOAD PROTECTION AS REQUIRED.

2 FACTORY INSTALLED JUMPER.

HEATING

RELAY OR

VALVE COIL

COMPRESSOR

CONTACTOR

FAN

RELAY

M1951

1 POWER SUPPLY. PROVIDE DISCONNECT MEANS

AND OVERLOAD PROTECTION AS REQUIRED.

REMOVE FACTORY INSTALLED JUMPER BETWEEN R AND R

COMPRESSOR

CONTACTOR

HEAT

CHANGEOVER

VALVE

COOL

CHANGEOVER

VALVE

FAN

RELAY

M1951

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

4 USE EITHER O OR B FOR HEAT PUMP CHANGEOVER.

1 2 3 4 5 6 7 ... 11 12

Comments to this Manuals

No comments

Honeywell T8775A User Manual Page 2

Comments to this Manuals

Related products and manuals for Thermostats Honeywell T8775A