2
TABLE OF CONTENTS
IMPORTANT SAFETY INFORMATION..................... 3
REQUIREMENTS&CODES..................................... 4
GENERAL INFORMATION........................................ 5
Before you install this unit............................................5
Locating the Equipment ...............................................5
Heating Load................................................................5
COMBUSTIONAIR&VENTINGREQUIREMENTS. . 6
Vent Termination ..........................................................6
CIRCULATING AIR SUPPLY..................................... 7
Air Ducts.......................................................................7
Air Filter Requirements ................................................7
Unconditioned Spaces.................................................7
Acoustical Duct Work...................................................7
UNIT INSTALLATION................................................ 8
Packaging Removal .....................................................8
Rigging & Hoisting........................................................8
Clearances to Combustible Materials..........................8
Ground Level................................................................8
Condensate Drain (Air Conditioning)...........................8
ELECTRICALWIRING............................................... 9
Pre-Electrical Checklist................................................9
Grounding.....................................................................9
Line Voltage .................................................................9
Thermostat / Low Voltage Connections.......................10
2-Stage Heat / 1-Stage Cool Thermostat .................10
Single Stage Heat / Single Stage Cool Thermostat..10
Checking Heat Anticipator Settings..........................10
Cooling Configurations.................................................10
Heating Configurations.................................................10
Blower Speed...............................................................10
Configuring the Fixed Speed Blower ........................10
Selecting Cooling Airflow..........................................11
Selecting Heating Airflow..........................................11
Dehumidification Options.............................................11
Optional Furnace Control Board Connections.............11
Electronic Air Cleaner...............................................11
Humidifier..................................................................11
GASSUPPLY&PIPING............................................ 12
Leak Check ..................................................................12
High Altitude Conversion - Natural Gas.......................13
LP / Propane Gas Conversion .....................................13
STARTUP&ADJUSTMENTS.................................. 15
Pre-Start Check List.....................................................15
Start-Up Procedure......................................................15
Air Circulation ...........................................................15
Lighting the Appliance ..............................................15
Verifying System Heating..........................................16
Verifying & Adjusting Temperature Rise....................16
Gas Supply Pressure Verification & Adjustment.......16
Verifying the Firing Rate of the Appliance.................16
Measuring the Manifold Pressure.............................17
Adjusting the Manifold Pressure...............................17
Removing the Manometer/Pressure Gauge.............17
Verifying Over-Temperature Limit Control Operation17
Verifying Burner Operation.......................................18
Verifying System Cooling..........................................18
OPERATING SEQUENCE......................................... 19
Heating Mode...............................................................19
Thaw Cycle Start Up / Shutdown.................................20
Blocked Vent / Condensate Disposal Shut Down........20
Cooling Mode - Single Stage Operation......................20
De-Humidification Control............................................20
Fan Mode.....................................................................20
COMPONENT FUNCTIONS...................................... 20
EQUIPMENT MAINTENANCE................................... 21
Heat Exchanger & Burner Maintenance ......................21
Cleaning of Burners .....................................................22
TROUBLESHOOTING............................................... 22
Cooling Mode...............................................................22
Heating Mode...............................................................22
FIGURES&TABLES................................................. 23
Figure 7. Unit Dimensions.........................................23
Table 7. Center of Gravity & Shipping Weights.........23
AirowInformation.....................................................24
Table 8.Cooling Airflow Settings...............................24
Table 9.Heating Airflow Settings..............................24
Table 10. Blower Performance - 2 & 2.5 Ton.............25
Table 11. Blower Performance - 3 Ton ......................26
Table 12. Blower Performance - 3.5 Ton ...................27
Table 13. Blower Performance - 4 & 5 Ton................28
GasInformation..........................................................29
Table 14. Gas Pipe Capaacities................................29
Table 15. Gas Flow Rates.........................................29
Figure 8. Gas Valve Label.........................................30
ElectricalData&Diagrams........................................31
Table 16. Electrical Data...........................................31
Table 17. Copper Wire Size ......................................31
Table 18.Thermostat Wire Gauge ............................31
Figure 9.Two Stage Heating / Single Stage
Cooling Configuration...............................................31
Figure 10. Fixed Speed Motor Control Board ...........31
Figure 11. Ignition Control Board - 624809...............31
Figure 12.Wiring Diagram........................................32
ChargingCharts.........................................................33
Figure 13. Charging Chart for 2 Ton Units ................33
Figure 14. Charging Chart for 2.5 Ton Units .............33
Figure 15. Charging Chart for 3 Ton Units ................34
Figure 16. Charging Chart for 3.5 Ton Units .............34
Figure 17. Charging Chart for 4 Ton Units ................35
Figure 18. Charging Chart for 5 Ton Units ................35
APPENDIX - HEAT EXCHANGER CONDENSATE
DRAIN&VENTSYSTEM.......................................... 36
Vent Pipe & Drain Hose Assembly...............................36
Vertical Drain Pit Method .............................................36
Preparing the pit .......................................................37
Percolation Test (Optional)........................................37
Vertical Drain Pipe Installation..................................37
Horizontal Drain Trench Method ..................................37
Preparing the Trench ................................................38
Horizontal Drain Pipe Installation..............................38
Completing the Vent Installation ..................................38
REPLACEMENT PARTS............................................ 38
INSTALLATION / PERFORMANCE CHECK LIST.... 40
