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: Service Manual
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
2
part numbers and related pre-sale data. Installation Instructions are also
available per specific models.
Information in this document refers to units produced in 2010 to current.
Installation Guideline
Residential New Construction
Specifications for these units in the residential new construction market
require the unit to be installed outdoors and meet all local code and
requirements. Consult the Installation Instructions for any additional
installation detail.
Add-On Replacement (Retrofit)
Specifications for these units in the add-on replacement/retrofit market
require the unit to be installed outdoors and meet all local codes and
requirements. Clearances, power supply, system static needs to be check
to ensure that the replacement unit can perform within the design
parameter desired specified in the Product Data.
Accessories
Accessory Descriptions
Refer to
for an Accessory Usage Guide for Air Conditioners and
Heat Pumps. Refer to the appropriate section below for a description of
each accessory and its use.
1. Crankcase Heater
An electric resistance heater which mounts to the base of the
compressor to keep the lubricant warm during off cycles. Improves
compressor lubrication on restart and minimizes the chance of
liquid slugging.
Usage Guideline:
Required in low ambient cooling applications.
Suggested in all commercial applications.
2. Evaporator Freeze Thermostat
An SPST temperature-actuated switch that stops unit operation
when evaporator reaches freeze-up conditions.
Usage Guideline:
Required when low ambient kit has been added.
3. Isolation Relay
An SPDT relay which switches the low-ambient controller out of
the outdoor fan motor circuit when the heat pump switches to
heating mode.
Usage Guideline:
Required in all heat pumps where low ambient kit has been
added
4. Outdoor Thermostat Kit
Locks out the accessory electric heater until outdoor ambient
conditions falls below the pre-set temperature. This kit will activate
the electric heat when additional heat is required at lower ambient
making it a more efficient system.
Low-Ambient Cooling Guideline
The minimum operating temperature for these units in cooling mode is
40°F/4.4°C outdoor ambient without additional accessories. This
equipment may be operated in cooling mode at ambient temperatures
below 40°F/4.4°C when the accessories listed in
are installed.
Table 1 – Required Field-Installed Accessories for Air Conditioners
and Heat Pumps
Accessory
Required for low
ambient cooling
applications
(Below 40°F /
4.4°C)
Accessory Part
Number
Motormaster II Low
Ambient Kit
Yes
CPLOWAMB001A00
Evaporator Freeze
Thermostat
Recommended
KSAFT0101AAA
Compressor Start Assist
(CTCR)
Yes
CPHSTART002A00
Isolation Relay (Required
for Heat Pumps)
Yes
--HN--65KJ-016
Crankcase Heater
--
See below...
-- AC 13.4 SEER2 24-36
Yes
CPCRKHTR007A00
-- AC 13.4 SEER2 42-60
Yes
CPCRKHTR004A00
-- HP 13.4 SEER2 42-60
-- HP 13.4 SEER2 24-36
Yes
CPCRKHTR008A00