Carrier 38YSA instruction manual Other Hp Thermostat

OTHER

HP THERMOSTAT

FA, FB, FC,	HEAT
FD, FF, FH
FAN COIL	PUMP

OTHER	FA, FB, FC,	HEAT	ONE
	FD, FF, FH		OUTDOOR
HP THERMOSTAT	FAN COIL	PUMP	THERMOSTAT

24 VAC HOT	R
24 VAC COM	C
HEAT STAGE 2	W2
COOL/HEAT
	Y
STAGE 1
INDOOR FAN	G
RVS COOLING	O
EMERGENCY
	E
HEAT

R	R
C	C
W2 *	W2
E *
W3 *	Y
G
	O

*IF AVAILABLE

24 VAC HOT

24 VAC COM

HEAT STAGE 2

COOL/HEAT STAGE 1

INDOOR FAN

RVS COOLING

EMERGENCY HEAT

W3	ODT
R
R	R
C
C	C
W2
W2	W2
Y
E
G	Y
G
O
	O
E

			A97374
OTHER	FA, FB, FC,		TWO
	FD, FF, FH	HEAT	OUTDOOR
HP THERMOSTAT	FAN COIL	PUMP	THERMOSTATS

NOTE: Remove wires from crimp nut in indoor fan coil when installing outdoor thermostat.

IMPORTANT: When using outdoor thermostat, W2 must be energized when requesting supplemental heat.

A97403

24 VAC HOT

24 VAC COM

HEAT STAGE 2

COOL/HEAT STAGE 1

INDOOR FAN

RVS COOLING

EMERGENCY HEAT

	W3 *		ODT
R
EHR	R		R
C
	C		C
W2		*
	W2		W2
Y
EHR			Y
G
	E	*	ODT
O
	G
E
			O
	EHR

OTHER

HP THERMOSTAT

24 VAC HOT	R
24 VAC COM	C
HEAT STAGE 2	W2
COOL/HEAT
	Y
STAGE 1
INDOOR FAN	G
RVS COOLING	O

40FKA	HEAT
FK4C
FAN COIL PUMP
DH	J1 JUMPER
R	R
C	C
W1	W2
W2	J2 JUMPER
Y/Y2	Y
G

O O

*IF AVAILABLE

NOTE: Remove wires from crimp nut in indoor fan coil when installing outdoor thermostats.

IMPORTANT: When using outdoor thermostats, W2 must be energized when requesting supplemental heat.

EMERGENCY	E
HEAT

Y1

A97404

A98630

Fig. 10—Typical 24-v Circuit Connections using Other HP Thermostats with Fan Coils and

No Outdoor Thermostat, 1 Outdoor Thermostat, or 2 Outdoor Thermostats

7