2
IMPORTANT SAFETY INFORMATION .....................3
REQUIREMENTS & CODES .....................................4
GENERAL INFORMATION ........................................4
Before You Install this Unit ....................................... 4
Locating the Heat Pump .......................................... 4
Air Duct System.......................................................4
HEAT PUMP INSTALLATION ....................................5
Unpacking the Unit ..................................................5
Minimum Clearances ............................................... 5
Service Access Clearances .................................5
Clearances to Combustible Materials ..................5
Installing Return & Supply Air Collars .....................5
Return Duct .......................................................... 5
Supply Duct .......................................................... 5
Locating & Installing the Return Air Assembly ........5
Unconditioned Spaces .........................................5
Locating & Installing the Supply Damper(s) ............6
Condensate Drainage .............................................6
ELECTRICAL CONNECTIONS .................................7
Pre-Electrical Checklist:...........................................7
Line Voltage ............................................................. 7
Grounding................................................................7
Overcurrent Protection ............................................7
Blower Speed ..........................................................8
2-Speed Outdoor Fan Motor ...................................8
(Select Models) .......................................................8
Ambient Sensor Mounting .......................................8
Demand Defrost Control..........................................9
Thermostat Connections .........................................9
Electric Heat Package (optional) .............................10
STARTUP & ADJUSTMENTS ...................................11
Pre-Start Checklist ..................................................11
Start-Up Procedure .................................................11
Air Circulation ....................................................... 11
System Heating .................................................... 11
System Cooling ....................................................11
Short Cycle Protection .........................................11
Emergency Heat ..................................................11
Adjustment of Refrigerant Charge ........................... 11
Charging the Unit in AC Mode .................................11
Charging the Unit in Heating Mode .........................12
Forced Defrost Mode (Field Test) ............................12
Anti Short Cycle Timer Test .....................................12
Heating Mode ....................................................... 12
Cooling Mode .......................................................12
COMPONENT FUNCTIONS ......................................12
Low Pressure Switch ...............................................12
High Pressure Switch ..............................................12
UNIT MAINTENANCE ................................................12
FIGURES & TABLES .................................................13
Figure 8. Unit Dimensions ....................................13
Table 3. Physical Data ..........................................13
Refrigerant Charging Charts - Cooling Mode .......... 14
Figure 9. Charging Chart for 2 Ton Units .............. 14
Figure 10. Charging Chart for 3 Ton Units ............14
Figure 11. Charging Chart for 4 Ton Units ............15
Figure 12. Charging Chart for 5 Ton Units ............15
Wiring Diagrams ...................................................... 16
Figure 13. Wiring Diagram - 2 & 3 Ton Units ........16
Figure 14. Wiring Diagram - 4 & 5 Ton Units ........17
INSTALLATION / PERFORMANCE CHECK LIST ....20
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