Nordyne G7XA Series, Installation Instructions Manual

Page: 3 / 28

3
SAFETY INFORMATION .............................................4
REQUIREMENTS AND CODES ..................................4
GENERAL INSTRUCTIONS ........................................4
Combustion Air Quality ...........................................4
Clearances to Combustible Materials .....................4
Installation in a Garage ...........................................6
Heating Load ...........................................................6
COMBUSTION AIR REQUIREMENTS .......................6
General Information ................................................6
Installation in a Confi ned Space ..............................6
Air From Inside ...................................................6
Outdoor Air Using a Crawl Space or
Vented Attic ........................................................6
Outdoor Air Using Vertical Ducts ........................7
Outdoor Air Using Horizontal Ducts ...................7
Air Directly Through an Exterior Wall .................7
Installation in an Unconfi ned Space ........................8
VENTING REQUIREMENTS ........................................8
Category I Venting ...................................................8
CIRCULATING AIR REQUIREMENTS ........................9
Plenums and Air Ducts ............................................9
Supply Air Connections ...........................................9
Return Air Connections ...........................................9
Side Return Installations .....................................9
Bottom Return Installations .................................9
FURNACE INSTALLATION ....................................... 10
General Requirements .......................................... 10
Upfl ow Installation ................................................. 10
Side Return Air Inlet ......................................... 10
Bottom Return Air Inlet ..................................... 10
Horizontal Installation ............................................ 10
Bottom Panel Removal ..................................... 10
Alternate Bottom Panel Removal ..................... 11
GAS SUPPLY AND PIPING ....................................... 11
Leak Check ........................................................... 11
High Altitude Application........................................ 12
Conversion to LP/Propane .................................... 13
ELECTRICAL WIRING ............................................... 13
Low Voltage Wiring ................................................ 13
Line Voltage Wiring ................................................ 13
Twinning ................................................................. 14
Grounding .............................................................. 15
START-UP & ADJUSTMENTS ...................................15
Pre-Start Checklist ................................................15
Start-Up Procedures ..............................................15
Verifying and Adjusting Input Rate ........................15
Verifying and Adjusting Temperature Rise .............16
Verifying Burner Operation ....................................16
Verify Operation of the Supply Air Limit Switch .....16
OPERATING SEQUENCE .........................................17
Heating Cycle ........................................................17
Cooling Cycle ........................................................17
Fan Mode ..............................................................17
MAINTENANCE .........................................................17
Air Filters ...............................................................17
Blower Compartment ............................................17
Cleaning of Burners ..............................................18
Cleaning of Flue Passages ...................................18
Heat Exchanger and Burner Maintenance ............18
Lubrication ............................................................18
Vent System ..........................................................19
DESCRIPTION OF COMPONENTS ..........................19
TROUBLESHOOTING ...............................................20
FIGURES AND TABLES ............................................21
Figure 16 - Furnace Dimensions ......................21
Airfl ow Data ...........................................................22
Table 5 - Maximum Airfl ow and Temp Rises .....22
Electrical Information.............................................24
Figure 17 - Wiring Diagram ..............................24
Gas Information .....................................................25
Table 6 - Gas Flow Rates.................................25
Table 7 - Gas Pipe Capacities .........................25
Table 8 - High Altitude Deration Chart for
Natural Gas .......................................26
Table 9 - High Altitude Deration Chart for
Propane Gas .....................................26
Location of Furnace Components .........................27
Figure 18 - Upfl ow/Horizontal Gas Furnace
Components ..................................27
INSTALLATION/PERFORMANCE CHECKLIST .......28
TABLE OF CONTENTS