Carrier 320AAZ- User Manual

1

KGBSD0301FMS

Operating Instructions

ECM MOTOR SIMULATOR

NOTE

: Read the entire instruction manual before using the

ECM motor simulator.

SAFETY CONSIDERATIONS

FIRE, EXPLOSION, ELECTRICAL SHOCK

HAZARD

Failure to follow this warning could result in personal

injury, death and / or property damage.
The ability to properly perform service on this equipment

requires certain expertise, mechanical skills, tools, and

equipment. If you do not possess these, do not attempt to

perform any service on this equipment other than those

procedures recommended in the User’s Manual.

!

WARNING

Installing and servicing heating equipment can be hazardous due

to gas and electrical components. Only trained and qualified
service personnel should install, repair, or service heating

equipment.
Untrained personnel can perform basic maintenance functions

such as cleaning coils, or cleaning and replacing filters. All other

operations should be performed by trained service personnel.
When working on heating equipment, observe precautions in

literature, on tags, and on labels attached to or shipped with the
unit, and other safety precautions that may apply.
Follow all safety codes. In the United States, follow all safety
codes including the National Fuel Gas Code (NFGC) NFPA

54/ANSI Z223.1. In Canada, refer to the National Standard of

Canada

Natural

Gas

and

Propane

Installation

Codes

(NSCNGPIC), CSA B149.1.
Wear safety glasses and work gloves. Have a fire extinguisher
available during start--up, adjustment procedures, and service

calls.
Recognize safety information. This is the safety--alert symbol

. When you see this symbol on the furnace and in instructions

or manuals, be alert to the potential for personal injury.
Understand

the

signal

words

DANGER,

WARNING,

CAUTION, and NOTE. The words DANGER, WARNING, and

CAUTION are used with the safety--alert symbol. DANGER
identifies the most serious hazards which will result in severe

personal injury or death. WARNING signifies hazards which

could result in personal injury or death. CAUTION is used to
identify unsafe practices which may result in minor personal

injury, or product and property damage. NOTE is used to
highlight suggestions which will result in enhanced installation,

reliability, or operation.

INTRODUCTION

This instruction covers the use of the ECM motor simulator for
the following variable--speed gas furnaces:

CARRIER

BRYANT

PAYNE

90% Furnace Models

59MN7A

987MA

PG9UAA

59TN6A

355CAV

--- ---

58MVC

355BAV

--- ---

58UVB

355AAV

--- ---

58MVB

355MAV

--- ---

58MVP

321AAZ*

--- ---

58VUA*

320AAZ*

--- ---

58VCA*

398BAZ*

--- ---

58SXB*

398BAW*

--- ---

80% Furnace Models

58CVA

315A

PG8MVA

58CVX

315J

PG8JVA

* Requires HK42FZ003 or HK42FZ012 control.

NOTE

: The ECM motor simulator can only be used with the

furnace component self--test function.

In addition, an adapter

harness is included for installations with ECM 3.0 motors and an
inducer adapter harness is included for conversion to a 12--pin
connector.
Use the procedure outlined below several times before relying on

the condensed instructions printed on the ECM motor simulator

labels. This procedure should be inserted into the main
troubleshooting guide.

DESCRIPTION AND USAGE

The ECM motor simulator is designed to assist the service

technician in troubleshooting the variable speed gas--fired
furnaces. Use the procedure outlined below to troubleshoot with

the ECM motor simulator.

ELECTRICAL OPERATION HAZARD

Failure to follow this warning could result in damage to this

equipment, personal injury, or death.
Only trained and qualified personnel should install, repair or

service this equipment.

!

WARNING