Carrier instruction manual Model 2S TWO-STAGE or TWO-SPEED Thermostat VARIABLE-SPEED

MODEL 2S

TWO-STAGE OR

TWO-SPEED

THERMOSTAT

VARIABLE-SPEED

AIR CONDITIONER

FURNACE

COOL STAGE 1

Y1 *

Y1/W2

Y1

FAN

G

G

HEAT STAGE 1

W/W1

W/W1

COOL STAGE 2

Y/Y2

Y/Y2

Y2

HEAT STAGE 2

O/W2

W2

24 VAC HOT

R

R

R

24 VAC COMM

C

C

C

N/A

B

HUM

OUTDOOR

S1

SENSOR

S2

CONNECTION

See notes 2, 5, and 7

ON

SUGGESTED DIP

SWITCH SETTINGS

A B

C

D

OFF OFF

ON

OFF

A98492

→Fig. 9ÐTwo-Speed Air Conditioner with 2-Stage or Variable-Speed Furnace

ÐModel 2S Thermostat

MODEL 2S				SINGLE-STAGE		TWO-SPEED
THERMOSTAT				FURNACE		HEAT PUMP
COOL/HEAT
	Y1/W2					Y1
STAGE 1
RVS COOLING		O/W2				O
					W
HEAT STAGE 3	W/W1					W2
COOL/HEAT		Y/Y2			Y	Y2
STAGE 2
			G		G
FAN						W3
24 VAC HOT			R		R	R
24 VAC COMM			C		C	C
N/A			B
			S1
OUTDOOR
SENSOR			S2
CONNECTION						See notes 3, 9, and 11
ON

SUGGESTED DIP

SWITCH SETTINGS

A B C D

OFF OFF OFF OFF

A98494

→Fig. 11ÐTwo-Speed Heat Pump with Single-Stage Furnace

ÐModel 2S Thermostat

	MODEL 2S				TYPICAL		TWO-SPEED
	THERMOSTAT				FAN COIL		AIR CONDITIONER
24 VAC HOT				R		R	R
	FAN			G		G
HEAT STAGE 1			W/W1			W2
						Y *
COOL STAGE 2
			Y/Y2				Y2
HEAT STAGE 2			O/W2			W3
						E
COOL STAGE 1			Y1/W2
							Y1
24 VAC COMM				C		C	C
	N/A			B
OUTDOOR				S1
SENSOR				S2
CONNECTION						See notes 2, 7, and 8
ON
					SUGGESTED DIP
					SWITCH SETTINGS
	A B	C		D
OFF OFF		ON	OFF				A98493

→Fig. 10ÐTwo-Speed Air Conditioner with Typical Fan CoilÐModel 2S Thermostat

	MODEL 2S				TWO-STAGE OR				TWO-SPEED
	THERMOSTAT				VARIABLE-SPEED				HEAT PUMP
					FURNACE
COOL/HEAT							Y1 *
		Y1/W2								Y1
STAGE 1							O *
RVS COOLING			O/W2							O
HEAT STAGE 3			W/W1			W/W1				W2
COOL/HEAT
			Y/Y2			Y/Y2				Y2
STAGE 2
				G			G
	FAN
										W3
24 VAC HOT				R			R
										R
							W2
24 VAC COMM				C			C
										C
	N/A			B
						HUM
OUTDOOR				S1
SENSOR				S2
CONNECTION								See notes 3, 6, 7, 9, and 11
ON
					SUGGESTED DIP
					SWITCH SETTINGS
	A B C			D
OFF OFF OFF OFF

A98495

→Fig. 12ÐTwo-Speed Heat Pump with 2-Stage or Variable-Speed Furnace

ÐModel 2S Thermostat

9