Honeywell CT87A ユーザーズマニュアル

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Using the compatibility chart 

below, verify that you purchased 

the correct CT87Thermostat for 

your heating/cooling system. If 

you are unsure which model is 

right for your system, visit 

yourhome or call Honeywell 

Customer Care at 

1-800-468-1502.

* CT87A is compatible with 2-wire cooling-only systems.

Heating only: Gas or oil fueled warm air, steam, or hot 

water heat

Yes

Yes

No

Cooling only: Electric air conditioning

Yes*

Yes

Yes

Heating and cooling: Gas or oil fueled warm air, 

steam, or hot water heat with electric air conditioning

No

Yes

No

Single stage heat pump: Outdoor heating/cooling unit 

(compressor) with no auxiliary or backup heat.

No

No

Yes

No

No

Yes

Electric baseboard: Electric heating strips located just 

above the floor, usually 120-240 volts

No

No

No

Multistage: A conventional system with more than one 

stage, or an outdoor heating/cooling unit (compressor) 

with auxiliary or backup heat.

No

No

No

LOW VOLTAGE (15 TO 30 VAC),

THERMOSTAT AND MOUNTING HARDWARE