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TABLE OF CONTENTS
To the Installer .............................................................2
Shipping Inspection .......................................................3
Checking Product Received ...................................3
Message to the Homeowner ...................................3
Replacement Parts .......................................................3
Ordering Parts .........................................................3
Important Safety instructions ...................................3
Codes and Regulations ................................................3
General ......................................................................3
EPA Regulations .......................................................4
National Codes .........................................................4
Major Components .......................................................4
Installation ....................................................................4
Pre-Installation Checkpoints ................................4
Clearances and Accessibility ................................4
Ground Level Installation Details .......................4
Unit Location .............................................................4
Roof Top Installation Details ...............................5
Roof Curb Installations Only ...............................5
Rigging Details .........................................................5
Circulating Air and Filters .........................................6
Air Flow Conversion ...............................................6
Duct Work ..................................................................7
Manufactured Home MOD Kit .................................7
Plenum Application ..................................................7
Filters ..............................................................................7
Condensate Drain Piping..............................................8
Electrical Wiring .........................................................8
High Voltage Wiring .................................................8
Low Voltage Wiring .................................................9
Internal Wiring .........................................................9
Start-up Procedures and Checklists .......................9
Air Conditioner Start Up Procedure ...................9
Heat Pump Start up Procedure .............................9
Final System Checks ...............................................10
Components ...................................................................10
Contactor .................................................................10
Crankcase Heater ...................................................10
Condenser Motor ....................................................10
Compressor ..............................................................10
Contactor Relay ......................................................10
Defrost Control .....................................................10
Outdoor Thermostat ..............................................10
Reversing Valve Coil ..............................................10
Indoor Blower Motor ............................................10
Blower Interlock Relay ........................................10
Heat Pump Operation ...................................................11
Cooling Cycle ..........................................................11
Heating Cycle ...........................................................11
Defrost Control .....................................................11
Suggested Field Testing/Troubleshooting .......12
Testing Defrost Thermostat .................................12
Airflow Measurement and Adjustment ...................12
Total External Static Pressure ...........................12
Adjusting Speed Tap for ID Blower Motor .............13
EEM Motor ................................................................13
[GPC/*PH] CFM Delivery and Adjustments .........13
[GPC/*PH] Thermostat "Fan Only" Mode ..............13
Superheat and Subcooling .........................................13
Checking Subcooling .............................................13
Checking Superheat ................................................13
Superheat Adjustment ...........................................13
Refrigerant Charge Check ...................................13
Electric Heat Installation & Adjustment ................14
Heater Kit ..................................................................14
Maintenance ..................................................................14
Service ............................................................................15
Inadequate Air Volume Through ID Coil .............15
Outside Air Into Return Duct ...............................15
Malfunctioning Reversing Valve 12 ....................15
Reversing Valve Troubleshooting ......................15
Poor "Terminating" Sensor Contact ..................16
Undercharge ............................................................16
Troubleshooting Chart ..............................................17
Blower Performance Data .........................................18
Unit Dimensions ............................................................22
Homeowner's Routine Maintenance .........................23
Start-Up Checklist .......................................................24
TO THE INSTALLER
Carefully read all instructions for the installation prior to
installing unit. Make sure each step or procedure is un-
derstood and any special considerations are taken into
account before starting installation. Assemble all tools,
hardware and supplies needed to complete the installa-
tion. Some items may need to be purchased locally. After
deciding where to install unit, closely look the location
over - both the inside and outside of the home. Note any
potential obstacles or problems that might be encountered
as noted in this manual. Choose a more suitable location if
necessary.
IMPORTANT NOTE: IF A CRANKCASE HEATER IS
USED, THE UNIT SHOULD BE ENERGIZED 24 HOURS
PRIOR TO COMPRESSOR START UP TO ENSURE
CRANKCASE HEATER HAS SUFFICIENTLY WARMED
THE COMPRESSOR. COMPRESSOR DAMAGE MAY
OCCUR IF THIS STEP IS NOT FOLLOWED.
Before using this manual, check the serial plate for proper
model identification.
The installation and servicing of this equipment must be
performed by qualified, experienced technicians only.
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Table of Contents
Troubleshooting
