Carrier Non-Programmable Thermostats - Single-Speed Packaged Heat Pump with Single-Stage Electric Heat (50 HS, HX, ZH); Single-Speed Packaged Heat Pump with Single-Stage Gas Furnace (48 HX); Single-Speed Packaged Heat Pump with 2-Stage Electric Heat (50 HS, HX, ZH); Wiring Diagram Notes

→ Fig. 22—Single-Speed Packaged Heat Pump with
Single-Stage Electric Heat (50HS, HX, ZH)
A98472
B
S1
S2
SPLICE
BOX
YEL
WHT
See notes 8, and 12
O/W2
RVS COOLING
N/A
Y1
N/A

OUTDOOR

SENSOR

CONNECTION
HEATER
CONTROL BOX
GRN
ORN
BRN
BRN
RED
24 VAC HOT


24 VAC COMM


HEAT STAGE 2


COOL/HEAT
STAGE 1

FAN
C
R
G
W/W1
Y/Y2
MODEL HP
THERMOSTAT
→ Fig. 23—Single-speed Packaged Heat Pump with
2-Stage Electric Heat (50HS, HX, ZH)
A98473
B
S1
S2
SPLICE
BOX
YEL
WHT
O/W2
RVS COOLING
N/A
Y1
N/A

OUTDOOR

SENSOR

CONNECTION
HEATER
CONTROL BOX
ORN
VIO
BRN
BRN
RED
RED
24 VAC HOT


24 VAC COMM


HEAT STAGE 2


COOL/HEAT
STAGE 1

FAN
C
R
G
W/W1
Y/Y2
MODEL HP
THERMOSTAT
PNK
RED (TRAN)
See notes 8, 9, and 12
→ Fig. 24—Single-Speed Packaged Heat Pump
with Single-Stage Gas Furnace (48HX)
A98474
B
S1
S2
SPLICE
BOX
WHT
YEL
O/W2
RVS COOLING
N/A
Y1
N/A

OUTDOOR

SENSOR

CONNECTION
GRN
ORN
BRN
RED
24 VAC HOT


24 VAC COMM


HEAT STAGE 2


COOL/HEAT
STAGE 1

FAN
C
R
G
W/W1
Y/Y2
MODEL HP
THERMOSTAT
See notes 8, and 12
→ WIRING DIAGRAM NOTES:
1. Furnace must control its own second-stage heat operation via
furnace control algorithm. Refer to indoor equipment Instal-
lation Instructions for proper setup.
2. Cut jumper R19 to convert thermostat to air conditioning
operation.
3. As an option, lock the furnace into low-fire operation and let
O/W2 control high-fire operation. Refer to indoor equipment
Installation Instructions for proper setup.
4. O/W2 can control second-stage heat. Refer to indoor equip-
ment Installation Instructions for proper setup.
5. Refer to outdoor equipment Installation Instructions for latent
kit requirements.
6. Terminals marked with * may not be present on equipment.
7. O/W2 energizes reversing valve in cooling.
8. Refer to outdoor equipment Installation Instructions for proper
setup.
9. Omit red and pink wires from diagram when wiring a 50ZP,
ZH with 2-stage heaters.
10. Select the "ZONE" position on the 2-speed heat pump control
board.
11. Refer to fan coil Installation Instructions for proper wiring.
12. Program thermostat to bring on G (fan) with any W (heat)
selection. See section under "Set Thermostat Configuration."
10