Download Installation Instructions

TABLE OF CONTENTS
IMPORTANT SAFETY INFORMATION........................3
REQUIREMENTS & CODES........................................4
GENERAL INFORMATION...........................................5
Before You Install this Unit..........................................5
Locating the Equipment..............................................5
Combustion Air Requirements ...................................5
Heating Load .............................................................5
Combustion Air & Venting Requirements ....6
General Information ...................................................7
Vent Termination ........................................................7
Circulating Air Supply .......................................8
Air Ducts ....................................................................8
Air Filter Requirements ..............................................8
Unconditioned Spaces................................................8
Acoustical Duct Work..................................................8
STARTUP & ADJUSTMENTS.................................... 16
Pre - Start Checklist................................................. 16
Start-up Procedure................................................... 16
Air Circulation........................................................ 16
System Cooling..................................................... 16
System Heating..................................................... 16
Verifying & Adjusting Temperature Rise................... 16
Verifying & Adjusting Firing Rate.............................. 17
Manifold Pressure Adjustment................................. 17
Verifying Operation of Over-Temperature
Limit Control............................................................. 17
Verifying Burner Operation....................................... 18
Refrigerant Charging................................................ 18
OPERATING SEQUENCE.......................................... 18
Heating Mode........................................................... 18
Cooling Mode........................................................... 19
Fan Mode................................................................. 19
UNIT INSTALLATION...................................................9
Packaging Removal....................................................9
Rigging & Hoisting......................................................9
Clearances to Combustible Materials.........................9
Rooftop.......................................................................9
Ground Level..............................................................9
Condensate Drain ......................................................9
Horizontal to Downflow Conversion............................9
REPLACEMENT PARTS............................................. 19
ELECTRICAL WIRING................................................ 10
Pre - Electrical Checklist.......................................... 11
Grounding................................................................. 11
Line Voltage.............................................................. 11
Thermostat / Low Voltage Connections................... 11
Checking Heat Anticipator Settings....................... 11
Blower Speed........................................................... 12
5-Speed ECM Motor............................................. 12
PSC Motor............................................................ 12
Optional Furnace Control Board Connections......... 12
Electronic Air Cleaner........................................... 12
Humidifier.............................................................. 12
FIGURES & TABLES.................................................. 22
Figure 9. Unit Dimensions..................................... 22
Table 7. Center of Gravity & Shipping Weights...... 22
Airflow Information.................................................... 23
Table 8. Nominal Airflow Rates & Temp Rises...... 23
Gas Information........................................................ 24
Table 9. Gas Pipe Capacities................................ 24
Table 10. Gas Flow Rates..................................... 24
Figure 10. Unit Gas Valve Label............................ 25
Electrical Data & Diagrams...................................... 26
Table 11. Electrical Data........................................ 26
Figure 11. Wiring Diagram (ECM Motor)............... 27
Figure 12. Wiring Diagram (PSC Motor)............... 28
Charging Tables & Charts........................................ 29
Table 12. Charging Table for 2 Ton Units............... 29
Table 13. Charging Table for 2.5 Ton Units............ 29
Table 14. Charging Table for 3 Ton Units............... 30
Table 15. Charging Table for 3.5 Ton Units............ 30
Table 16. Charging Table for 4 Ton Units............... 31
Figure 13. Charging Chart for 5 Ton Units............. 31
GAS SUPPLY & PIPING............................................. 13
Leak Check............................................................... 13
High Altitude Conversion - Natural Gas................... 14
Lp / Propane Gas Conversion.................................. 14
EQUIPMENT MAINTENANCE.................................... 19
Cleaning of Heat Exchanger.................................... 20
Cleaning of Burners.................................................. 20
COMPONENT FUNCTIONS....................................... 21
TROUBLESHOOTING................................................ 21
INSTALLATION/PERFORMANCE CHECKLIST........ 32
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