Typical Wiring Schematics - Bryant 502A Manual

Horizontal indoor single package cooling units ceilingpac 2 to 5 tons

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Installation, start-up and service instructions manual (8 pages)

Table Of Contents

Table of Contents

ELECTRIC HEATER

UNIT

UNIT 88EN

502A

0050CA01

024, 036

0075CA01

1-stage

0115CA01

heat

0075EA01

1150EA01

0100EA01

0150EA01

0200EA01

0300EA01

048, 060

0300CA01

2-stage

heat

0100FA01

0150FA01

0200FA01

0300FA01

NOTE: Above electric heaters are not UL or CSA listed for use with optional high-static evaporator-fan motor (048, 060 units only).

NOTES:

1. Compressor and fan motors are thermally protected 3-phase motors protected against

primary single-phase condition.

2. If any original wires furnished must be replaced, it should be replaced with 90 C or its

equivalent.

3. Numbers indicate the line location of used contacts. A bracket over 2 numbers signi-

fies a single-pole double-throw contact. An underlined number signifies a normally

closed contact.

4. Must use thermostat HH07AT170, 172 or 174 with subbase HN63AZ176, 177 or 178.

5. Separate field power supply required for electric heater accessory.

6. CLO locks out the compressor to prevent short cycling on compressor overloads and

safety devices. Before replacing CLO check devices.

AHA

— Adjustable Heat Anticipator

BKR W/AT

— Brakes with Amp Turns

— Contactor Compressor

— Circuit Breaker

— Cooling Compensator

CLO

— Compressor Lockout

— Current Transformer

EQUIP GND — Equipment Ground

HPS

— High-Pressure Switch

— Heater Relay

IFC

— Indoor (Evaporator) Fan Contactor

IFR

— Indoor (Evaporator) Fan Relay

— Junction Box

— Light

LOR

— Lockout Relay

ELECTRICAL DATA (cont)

ELECTRIC HEATER STATIC PRESSURE DROP (in. wg)

MIN

CFM

600

400

.02

510

.03

620

320

.04

720

970

—

1240

1350

1220

—

1220

1130

—

1360

1350

—

1270