White Rodgers 1F95-1280 specifications Wiring Diagrams, Single Stage and Multi-Stage Connections

WIRING DIAGRAMS

Figure 2 – Single Stage or Multi-Stage System

(No Heat Pump) with Single Transformer

System	RC	RH	C	Y	Y2	W/E	W2	G	O/B	6	L
Single Stage 1				Call for cool	No Output	Call for heat	No output		Installer
(SS1)									Configuration		“Call for Service”
									Menu selects
			24 volt								(malfunction
									“O” or “B” for
			common					Blower/Circulator fan			indicator) for
									changeover	Power closed
	24 volt	24 volt	(optional					energized on a call			Heat Pumps
									function. Set
			for system					for cool or Fan On		connection for	with “L” terminal
	power for	power for							to “O” terminal	SPDT 3-wire
	cooling	heating	operation,					(also energized in	energized in Cool		connection.
			required	Cool mode-1st		Heat mode-1st	Heat mode-2nd	heating if configured		zone valve
Multi Stage 2					Cool mode-2nd				& Off mode. Set		Original production
			for remote					for Electric Heat)
(MS2)				stage	stage	stage	stage		to “B” terminal		1F95-1291’s
			sensor)
									energized in		do not have this
									Heat & emergency		connection
									mode

NEUTRAL
24VAC	120VAC
HOT

Single Stage and Multi-Stage Connections	SINGLE STAGE (SS 1) gas, oil or electric.
		CLASS II
Refer to equipment manufacturers’ instructions for specifi c system
	MULTI-STAGE (MS 2) gas, oil or electric.	TRANSFORMER
wiring information.
This thermostat is designed to operate a single-transformer or two-	After wiring, see INSTALLER CONFIGURATION section for proper
transformer system.	thermostat confi guration.
You can confi gure the thermostat for use with the following fossil fuel
systems:

Figure 3 – Heat Pump Systems

System	RC	RH	C	Y	Y2	*W/E	*W2	G	O	6	L
						Heat mode-2nd	Heat mode-3rd
						stage, Emergency	stage, Emergency
Heat						Mode-1st stage	Mode-2nd stage
						*Note: Dual Fuel	*Note: Dual Fuel
Pump 1					No Output
						option de-	option de-
(HP1)									Installer
						energizes Heat	energizes Heat
						mode stage 1	mode stage 1		Configuration		“Call for Service”
			24 volt			(compressor)	(compressor)		Menu selects
											(malfunction
						when auxiliary	when auxiliary		“O” or “B” for
			common					Blower/Circulator fan			indicator)
				Heat mode-1st		heat is energized	heat is energized		changeover	Power closed
	24 volt	24 volt	(optional	stage,				energized on a call	function. Set	connection for	for Heat Pumps
			for system					for cool or Fan On			with “L” terminal
	power for	power for		Cool mode-1st					to “O” terminal
			operation,			Heat mode-3rd	Heat mode-4th	(also energized in		SPDT 3-wire	connection.
	cooling	heating	required	stage,				heating if configured	energized in Cool	zone valve	Original production
				(Compressor)		stage, Emergency	stage, Emergency		& Off mode. Set
			for remote			Mode-1st stage	Mode-2nd stage	for Electric Heat)	to “B” terminal		1F95-1291’s
			sensor)								do not have this
Heat					Heat mode-2nd				energized in
						*Note: Dual Fuel	*Note: Dual Fuel				connection
									Heat &
Pump 2					stage,
						option de-	option de-		emergency mode
(HP2)					Cool mode-2nd
						energizes Heat	energizes Heat
					stage,
						mode stages 1	mode stages 1
					(Compressor)
						and 2 (both	and 2 (both
						compressors)	compressors)
						when auxiliary	when auxiliary
						heat is energized	heat is energized

		NEUTRAL
120VAC	120VAC	24VAC
HEATING		HOT
	CLASS II
	TRANSFORMER

NEUTRAL
24VAC
			120VAC
HOT
			COOLING
*Dual fuel option, if selected turns off compressor(s) when Auxiliary stages energize.
		CLASS II
	TRANSFORMER

Heat Pump Connections

If you do not have a heat pump system, refer to fi gure 3.

Refer to equipment manufacturers’ instructions for specifi c system wiring information.

You can confi gure the thermostat for use with the following heat pump systems.

HEAT PUMP TYPE 1 (HP 1). Single stage compressor system; gas or electric backup.

HEAT PUMP TYPE 2 (HP 2). Multi-stage compressor or two compressor system with gas or electric backup.

After wiring, see INSTALLER CONFIGURATION section for proper thermostat confi guration.

Figure 4 – Damper Terminal and Sensors

A1

Damper or

Economizer

Operation

(see configuration

menu item 31)

+	S	-
Supply voltage	Remote	Supply voltage
to remote	temperature	to remote
temperature	sensor signal	temperature
sensor		sensor

3