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IMPORTANT SAFETY INFORMATION .......................3
REQUIREMENTS & CODES .......................................4
GENERAL INFORMATION ..........................................5
Before You Install this Unit .........................................5
Locating the Equipment.............................................5
Heating Load ............................................................5
General Information ..................................................7
Vent Termination .......................................................7
CIRCULATING AIR SUPPLY ......................................8
Air Ducts ...................................................................8
Air Filter Requirements .............................................8
Unconditioned Spaces ..............................................9
Acoustical Duct Work ................................................9
UNIT INSTALLATION ..................................................9
Packaging Removal ...................................................9
Rigging & Hoisting .....................................................9
Clearances to Combustible Materials ........................9
Ground Level .............................................................9
Rooftop ......................................................................9
Horizontal to Downflow Conversion .........................10
Condensate Drain ..................................................10
ELECTRICAL WIRING ...............................................10
Pre - Electrical Checklist .........................................11
Grounding................................................................11
Line Voltage .............................................................11
Thermostat / Low Voltage Connections ...................11
Heat / Cool Thermostat ........................................12
Checking Heat Anticipator Settings ......................12
Cooling Configurations ............................................12
Heating Configurations ............................................12
Configuring the Variable Speed Blower ..................13
Selecting Cooling Airflow .........................................13
Selecting Heating Airflow ........................................13
Optional Blower Control Connections .....................13
Dehumidification Control ......................................13
Operation .............................................................13
GAS SUPPLY & PIPING ............................................14
Leak Check .............................................................14
High Altitude Conversion .........................................15
LP/Propane Gas Conversion ...................................15
STARTUP & ADJUSTMENTS ...................................17
Pre - Start Checklist ................................................17
Start-up Procedure ..................................................17
Air Circulation .......................................................17
System Cooling ....................................................17
System Heating ....................................................17
Verifying & Adjusting Temperature Rise ..................17
Verifying & Adjusting Firing Rate .............................18
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TAbLE OF CONTENTS
Control Operation ....................................................18
Verifying Burner Operation ......................................18
Manifold Pressure Adjustment ................................18
OPERATING SEQUENCE .........................................19
Heating Mode ..........................................................19
Cooling Mode ..........................................................20
Delay Override ........................................................20
Fan Only Mode ........................................................20
EQUIPMENT MAINTENANCE ...................................20
Cleaning of Heat Exchanger ...................................21
Cleaning of Burners ................................................22
TROUbLESHOOTING-COOLING MODE .................24
Diagnostic Display ...................................................24
Instrumentation .......................................................24
TROUbLESHOOTING-HEATING MODE ..................24
REPLACEMENT PARTS ............................................25
HEATING COMPONENT FUNCTIONS .....................25
bOARD CONNECTIONS ...........................................25
UNIT DIMENSIONS & WEIGHTS ..............................26
Figure 10. Unit Dimensions ..................................26
Table 11. Center of Gravity & Shipping Weights ...26
AIRFLOW DATA .........................................................27
Table 12. Nominal Airflow Rates & Temp Rises ...27
Table 13. Airflow Settings for Cooling ...................27
Table 14. Airflow Settings for Heating ...................27
GAS INFORMATION ..................................................28
Table 15. Gas Pipe Capacities .............................28
Table 16. Gas Flow Rates ....................................28
Figure 11. Gas Valve Label ..................................29
ELECTRICAL INFORMATION ...................................30
Figure 12. VSHE Blower Control Board ..............30
Figure 13. Two-Stage, Hot Surface Ignition &
Figure 14. Interface Board ...................................31
Table 17. Interface Board Operating Codes ........31
Figure 15. R6GI Inverter ......................................32
Figure 16. R6GI Typ. Heat Exchanger Assy ........33
Figure 17. Wiring Diagram (2,3, & 4 Ton) ............34
Figure 18. Wiring Diagram (5 Ton) .......................35
REFRIGERANT CHARGING .....................................36
in Cooling Mode ......................................................36
Figure 19. Charging Chart for 2 Ton Units ............37
Figure 20. Charging Chart for 3 Ton Units ............37
Figure 21. Charging Chart for 4 Ton Units ............38
Figure 22. Charging Chart for 5 Ton Units ............38
Figure 23. Temperature Resistance Charts ..........39
Blower Control Board .........................30
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