Bryant Comprehensive Thermostat Wiring Diagram

						FIELD 24-V WIRING
						FIELD 115-, 208/230-, 460-V WIRING
						FACTORY 24-V WIRING
						FACTORY 115-V WIRING
			NOTE 2			THERMOSTAT
		FIVE WIRE		W C R	G Y		FIELD-SUPPLIED
						TERMINALS
		THREE-WIRE					DISCONNECT
	HEATING-ONLY						208/230- OR
BLOWER DOOR SWITCH
							460-V
							THREE
BLK	BLK			W			PHASE
WHT	WHT		C	R
			O
			N				208/230-V
	GND	GND	T				SINGLE
115-V FIELD-		AUXILIARY	R	G			PHASE
			O
	SUPPLIED	J-BOX	L	COM			GND
DISCONNECT				NOTE 1		CONDENSING
				Y/Y2		UNIT
			24-V			TWO
		TERMINAL				WIRE
			BLOCK
		FURNACE		NOTES: 1. Connect Y-terminal in furnace as shown for proper blower operation.
				2.	Some thermostats require a "C" terminal connection as shown.

3. If any of the original wire, as supplied, must be replaced, use same type or equivalent wire.

A99440

Fig. 24—Heating and Cooling Application Wiring Diagram with 1–Stage Thermostat

DO NOT connect furnace control HUM terminal to HUM (humidifier) terminal on Thermidistat™ , Zone Controller or similar device. See Thermidistat™ , Zone Controller, thermo- stat, or controller manufacturer’s instructions for proper connection.

Step 8—Venting

→The furnace shall be connected to a factory built chimney or vent complying with a recognized standard, or a masonry or concrete chimney lined with a lining material acceptable to the authority having jurisdiction. Venting into an unlined masonry chimney or concrete chimney is prohibited.

→When an existing furnace is removed or replaced in a venting system, the venting system may not be properly sized to vent the attached appliances. An improperly sized Category I venting system could cause the formation of condensate in the furnace and vent, leakage of condensate and combustion products, and spillage of combustion products into the living space, etc.

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