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035-16408-001 Rev. B (101)

Unitary Products Group

9

 FIGURE 7 : 

WIRING FOR USE WITH 2-STAGE FURNACE

 

1

CONNECT FOR THERMOSTAT WITH FAULT
LIGHT INDICATOR ONLY, CAPTHIS WIRE
IF NOT USED.

2

OUTDOOR UNIT

WIRE NUT

CONTACTOR

THERMOSTAT

P*DU, P*XU

2-STAGE

FURNACE

TYPICAL TWO STAGE

COOLING THERMOSTAT

MUST BE USED

DEHUMIDISTAT

(OPTIONAL)

POWER

CONTROL

FACTORY

(CLASS 1 WIRING)

TS CONTROL

(CLASS 2 WIRING)

POWER WIRING

208/230-1-60

GND. 

LUG

T2

T1

L2

L1

M1

BLK

RED

BRN

YEL

ORG

PUR

R

Y2

Y1

G

W1

W2

X/L

W1

W2

G

Y

C

R

1

2

C

DEHUMIDISTAT MAKES CIRCUIT ON 
HUMIDITY RISE.

Summary of Contents for H1TC048

Page 1: ...NERAL INFORMATION GROUNDING 6 POWER WIRING 6 ACCESSORY WIRING 6 THERMOSTAT MOUNTING WIRING 6 DE HUMIDIFICATION CONTROL 7 FIELD CONNECTIONS CONTROL WIRING 7 INDOOR BLOWER SPEED SETTINGS 7 WIRING DIAGRA...

Page 2: ...en to alert the installer that severe per sonal injury death or equipment damage may result if instal lation procedures are not followed properly LIMITATIONS The unit should be installed in accordance...

Page 3: ...ined location 2 Remove the shipping carton and inspect for possible damage 3 Compressor tie down bolts should remain tightened 4 Position the unit on the base provided 5 Make a hole s in the structure...

Page 4: ...nstalled only with the tubing sizes for approved system com binations as specified in Tabular Data Sheet The charge given is applicable for total tubing lengths up to 15 feet See Application Data Form...

Page 5: ...g the service port flare caps to be sure they are leak tight DO NOT OVERTIGHTEN between 40 and 60 inch lbs maximum NOTE Do not use the system refrigerant in the outdoor unit to purge or leak test 9 Do...

Page 6: ...EC Class 2 from the thermostat to the indoor unit and outdoor unit Route the control wiring into the grommeted hole in the bottom of control box of the outdoor unit Using wire nuts connect to leads in...

Page 7: ...y to Y1 on the outdoor unit Do not connect to Y at the indoor control The first stage blower operation is controlled by the G signal It is critical the Y2 OUT signal is connected to Y at the air handl...

Page 8: ...TROL CLASS 2 WIRING POWER WIRING 208 230 1 60 GND LUG T2 T1 L2 L1 M1 BLK RED BRN YEL ORG PUR C R Y2 Y1 R Y2 Y1 G W1 W2 X L W2 W1 G Y C R 1 2 Y2 OUT X L C LOW HIGH FIGURE 6 WIRING FOR USE WITH SINGLE S...

Page 9: ...T USED 2 OUTDOOR UNIT WIRE NUT CONTACTOR THERMOSTAT P DU P XU 2 STAGE FURNACE TYPICAL TWO STAGE COOLING THERMOSTAT MUST BE USED DEHUMIDISTAT OPTIONAL POWER CONTROL FACTORY CLASS 1 WIRING TS CONTROL CL...

Page 10: ...ed with the matching thermostatic expansion valve kit listed in the tabular data sheet The best way to check the system charge is by check ing the system subcooling during the second stage of opera ti...

Page 11: ...15 of the pro grammed speed during the dehumidification mode This lower airflow reduces the evaporator temperature increasing the latent capacity The humidistat for these variable speed systems opens...

Page 12: ...maintenance Instruct the owner or the opera tor how to start stop and adjust temperature setting The installer should also instruct the owner on proper opera tion and maintenance of all other system...

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