SPLIT SYSTEM AIR CONDITIONER AND HEAT PUMP
INSTALLATION / START-UP INFORMATION
These instructions must be read and understood completely before attempting installation.
ISSUE 0144
These units are designed for use in residential and commercial type buildings with a wide
variety of Furnace/Air Handlers and Evaporator Coil combinations. Air-conditioners can be used
with conventional forced warm air heating systems and/or straight cooling systems independent
of the heating. Heat pumps are sensitive to indoor units and may only be installed with
combinations listed in the Air-Conditioning and Refrigeration Institute (ARI) Directory of Certified
Products.
After uncrating unit, inspect thoroughly for hidden damage. If damage is found, notify the
transportation company immediately and file a concealed damage claim.
WARNING
Installation or repairs made by unqualified
persons can result in hazards to you and
others. Installation MUST conform with local
building codes or, in the absence of local
codes, with the National Electrical Code
NFPA 70/ANSI C1-1993 or current edition
and Canadian Electrical Code Part 1 CSA
C22.1.
The information contained in this manual is
intended for use by a qualified service
technician familiar with safety procedures
and equipped with the proper tools and test
equipment.
Failure to carefully read and follow all
instructions in this manual can result in
equipment malfunction, property damage,
personal injury and/or death.
CAUTION
Improper installation, adjustment, alteration,
service or maintenance can void the
warranty.
NOTE: These instructions are intended as a general
guide and do not supersede national, state
or local codes in any way.
Table Of Contents:
Safety Precautions . . . . . . . . . . . . . . . . . . . . . . 2
Unit Location . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Roof Top Installations . . . . . . . . . . . . . . . . . . . 2
Evaporator Piston Selection . . . . . . . . . . . . . . . 2
Refrigeration Line Sets . . . . . . . . . . . . . . . . . . . 2
Installation Of Line Sets . . . . . . . . . . . . . . . . . . 3
Service Valve Type . . . . . . . . . . . . . . . . . . . . . 3
Brazing Connections . . . . . . . . . . . . . . . . . . . . 3
Leak Check . . . . . . . . . . . . . . . . . . . . . . . . . 3
Evacuating & Charging Instructions . . . . . . . . . . 3
Opening Service Valve . . . . . . . . . . . . . . . . . . . 4
Electrical Connections . . . . . . . . . . . . . . . . . . . 4
Control Wiring . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pre-Start Procedure . . . . . . . . . . . . . . . . . . . . . 5
Start-up Procedure . . . . . . . . . . . . . . . . . . . . . . 5
Adjusting Charge . . . . . . . . . . . . . . . . . . . . . . . 5
Piston System Charging . . . . . . . . . . . . . . . . . . 5
TXV System Charging . . . . . . . . . . . . . . . . . . . 5
Defrost System . . . . . . . . . . . . . . . . . . . . . . . . 6
Unit Maintenance . . . . . . . . . . . . . . . . . . . . . . . 6
Home Owner's Information . . . . . . . . . . . . . 7 & 8
20407502 ISSUE 0144 Page 1 of 8
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