Bryant 548D installation instructions Typical Wiring Diagram cont

NOTES:

1.If any of the original wire furnished must be replaced, it must be replaced with type 90° C wire or its equivalent.

2.Three-phase motors are protected under primary single-phasing conditions.

3.Thermostat: HH07AT172 and P272-2783

Subbase: HH93AZ176, 178 and P272-1882, 1883

4.Set Heat anticipator at .8 amp for 1st stage and .3 amp for 2nd stage.

5.Use copper conductors only.

6.Use copper, copper clad aluminum or aluminum conductors.

7.

			CB	MUST
VOLTAGE	Mfg. Pt. No.
				TRIP
RATING
		Potter &		AMPS
		Brumfield
24 V	W28X-1024-3.2			3.2

AHA — Adjustable Heat Anticipator AWG — American Wire Gage

C— Contactor, Compressor CAP — Capacitor

CB — Circuit Breaker

CC— Cooling Capacitor

CH — Crankcase Heater CLO — Compressor Lockout COMP — Compressor Motor

D— Diode

DB	—	Defrost Board
DFT	—	Defrost Thermostat
EC	—	Enthalpy Control
ECON	—	Economizer
EPS	— Emergency Power Supply
		(nine volt battery)
EQUIP	— Equipment
ER	— Economizer Relay
FPT	— Freeze-Up Protection Thermostat
FU	— Fuse
GND	— Ground
HC	— Heater Contactor (Strip Heat)
HPS	— High-Pressure Switch
HR	— Heater Relay
IFC	— Indoor Fan Contactor
IFM	— Indoor Fan Motor
IFMOVL — Indoor Fan Motor Overload Switch
LPS	— Low-Pressure Switch
LSM	— Limit Switch (Manual Reset)
MCA	— Minimum Circuit Amps
MTR	— Motor
OAT	— Outdoor Air Thermostat
OFC	— Outdoor Fan Contactor
OFM	— Outdoor Fan Motor

P— Plug

PL — Plug Assembly

QT — Quadruple Terminal

LEGEND

R— Relay

RVS — Reversing Valve Solenoid

SAT — Supply Air Thermostat

SW1 — Switch Fully Open

SW2 — Switch Fully Closed

SW3 — Switch Minimum Vent Position

SW4 — Switch Maximum Vent Position

TB — Terminal Block

TC — Thermostat-Cooling

TH — Thermostat-Heating

TRAN — Transformer

Field Splice

Marked Wire

Terminal (Marked)

Terminal (Unmarked)

Terminal Block

Splice

Spliced (Marked)

Factory Wiring

Field Control Wiring

Field Power Wiring

Accessory or Optional Wiring

To indicate common potential only, not to represent wiring.

Fig. 46 — Typical Wiring Diagram (cont)

Copyright 2000 Bryant Heating & Cooling Systems CATALOG NO. 5354-805