KAACH1401
KAACH1501
KAACH1601
KAACH1701
Installation Instructions
Crankcase Heater Kit
NOTE
: Read the entire instruction manual before starting the
installation.
Use only the kit components described in this
installation procedure.
SAFETY CONSIDERATIONS
Installing and servicing air conditioning equipment can be
hazardous due to system pressures and electrical components. Only
trained personnel should install or service air conditioning
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 air conditioning equipment, observe precautions
in the literature, on tags, and on labels attached to the unit.
Follow all safety codes. Wear safety glasses, protective clothing,
and work gloves. Use quenching cloth for brazing operations.
Have fire extinguisher available. Read these instructions
thoroughly and follow all warnings or cautions included in
literature and attached to the unit. Consult local building codes and
National Electrical Code (NEC), ANSI/NFPA 70, Canadian
Electrical Code CSA C22.1 and local codes and ordinances for
special requirements.
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 these signal words; DANGER, WARNING, and
CAUTION. 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 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.
ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal
injury or death.
Before beginning any installation or modification, be
sure the main electrical disconnect switch is in the OFF
position. TAG THE DISCONNECT SWITCH WITH
A SUITABLE WARNING LABEL.
!
WARNING
INTRODUCTION
This instruction covers the installation of Crankcase Heater Kits in
air conditioning equipment.
DESCRIPTION AND USAGE
The crankcase heater warms the compressor crankcase during the
off cycle. Crankcase heater is wired across the open contacts of the
contactor. When contactor is de--energized, crankcase heater is on.
When contacts are closed, no current flows through the heater
because it is on the same line voltage side as the compressor. The
heater is used to warm the oil, to reduce refrigerant migration, and
ensure proper compressor lubrication.
Kit contents:
— Crankcase heater -- 1
— Installation Instructions -- 1
— Temperature Switch (in kits 1601 and 1701 only) -- 1
INSTALLATION
1. Remove unit access panel and control box access panel.
Install crankcase heater on compressor as shown in Fig. 1.
2. Wrap heater around compressor base below oil level (heater
arms may be spread to slip over piping and terminal box).
3. Position
heater
below
compressor
terminal
box
approximately 2
in. (50.8 mm) above compressor
mounting plate.
4. Fasten heater firmly in place with clip provided on heater.
Wiring (kit numbers 1401 and 1501)
1. Route crankcase heater wires into control box and attach to
quick--connect line voltage terminals 11 and 21 on
contactor.
2. Reinstall control and unit access panels and check unit
operation.
Wiring (kit numbers 1601 and 1701)
1. Route the crankcase heater wire with 1/4” quick--connect
into control box and attach to quick--connect line voltage on
terminal 11 on contactor.
2. Connect the other crankcase heater wire to the temperature
switch wire with 3/16” quick--connect.
3. Route the other switch wire into control box and attach to
quick--connect line voltage terminal 21 on contactor.
NOTE
:
Temperature switch must be exposed in ambient
temperature. Wire tie temperature switch to wire bundle outside
control box enclosure. Reinstall control and unit access panels and
check unit operation.
