Instruction manual

ICM2 and 2.3
Control Module Replacement Kit
Installation Instructions
NOTE: Read the entire instruction manual before starting the installation.
This symbol → indicates a change since the last issue.
SAFETY CONSIDERATIONS
Installing and servicing of heating and air conditioning equipment
can be hazardous due to gas, system pressures and electrical
components. Only trained personnel should install or service
heating and air conditioning equipment. The qualified installer or
agency must use factory authorized kits or accessories when
modifying this product. Refer to individual instructions packaged
with kits or accessories when installing.
Follow all safety codes. Wear safety glasses and work gloves. Use
a quenching cloth for brazing operations. Have a fire extinguisher
available. Read these instructions thoroughly and follow all
warning or cautions attached to the unit. Consult local building
codes and National Electrical Code (NEC) for special require-
ments.
Recognize safety information. This is the safety-alert symbol
.
When you see this symbol on the unit and in instructions or
manuals, be alert to the potential for personal injury.
Understand the signal word DANGER, WARNING, CAUTION,
and NOTE. These words are used with the safety-alert symbol.
DANGER identifies the most serious hazards which will result in
severe personal injury or death. WARNING signifies a hazard
which could result in personal injury or death. CAUTION is used
to identify unsafe practices which would 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.
Before installing or servicing unit, always turn off all gas and
electrical supplies to unit. There may be more than one
disconnect switch. Turn off accessory heater power if appli-
cable. Electrical shock can cause personal injury or death.
The ability to properly perform service on this equipment
requires certain expertise, mechanical skills, tools, and equip-
ment. 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. A failure to follow this
warning could result in possible damage to this equipment,
serious personal injury, or death.
INTRODUCTION
This instruction covers installation of replacement electronic
control modules on all variable speed fan coils, variable speed gas
furnaces, and variable speed small packaged products.
DESCRIPTION AND USAGE
This kit is to be used for products which have an ICM2 or 2.3
motor with a round control module attached to the motor end bell.
If servicing an earlier vintage motor, a complete motor which
includes this module must be used instead of this kit. See Tables
2, 3, and 4 to match the product model with the replacement
module kit part number.
INSTALLATION FOR FAN COILS AND SMALL
PACKAGED PRODUCTS
Step 1—Check Equipment
Compare contents of kit with Table 1.
Step 2—Disconnect Line Voltage
Disconnect power from fan coil or small packaged unit being
serviced. There may be more than one disconnect switch. Do not
work on motor with line voltage applied.
NOTE: Failure of replacement controller will also occur if power
is applied to unit during replacement.
Wait at least 5 minutes after disconnecting line voltage from
equipment before opening motor to prevent electric shock
which can cause personal injury or death.
Step 3—Disconnect Existing Control Module
1. Remove blower compartment access panel.
NOTE: For gas packaged products unplug 3 wires from induced
draft motor capacitor and move them aside.
2. If necessary, clip wire tie holding wires running from control
module to motor mounting arms.
3. Remove screw holding green ground wire to blower housing.
4. Disconnect both multi-pin connectors from control module
attached to motor. Be sure to depress release latches on
connectors or they may be damaged.
5. Remove blower housing and place it on its side with motor
control module up. It is not necessary to remove motor from
housing. Control module unplugs according to the following
instructions. (See Fig. 1.)
Table 1—Kit Contents
PART NO. DESCRIPTION QUANTITY
See Tables 2, 3, 4 Electronic Control Module 1
111A522AAP7
3 1/2–in.
1/4 Hex Bolts
2
A-8794728AYP1 Plastic Locator Pin 1
HY76TB121 Wire Tie 1
* Replacement control modules are factory programmed for specific products
and model sizes. Even though they look alike, different modules will have
completely different functionality.
Cancels: IIK 333B-60-1 IIK 333B-60-2
9-01
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1144
Tab 3d 6a 2e 8a
PC 101 Catalog No. 534-015 Printed in U.S.A. Form 40FK-6SI Pg 1 9-01 Replaces: 40FK-2SI