INSTALLATION INSTRUCTIONS
2000 Lennox Industries Inc.
Dallas, Texas, USA
INSTALLATION
INSTRUCTIONS
G23(X) SERIES UNITS
GAS UNITS
503,884M
1/2000
Supersedes 5/99
Table of Contents
Unit Dimensions 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Arrangement 3. . . . . . . . . . . . . . . . . . . . . . . . . . .
Requirements 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Combustion, Dilution, & Ventilation Air 5. . . . . . . . . .
Installation - Setting Equipment 7. . . . . . . . . . . . . . . .
Return Air Opening Guidelines 7. . . . . . . . . . . . . . . . .
Filters & Optional Filter Assembly 8. . . . . . . . . . . . . .
Duct System 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Venting 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gas Piping 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unit Start-Up 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gas Pressure Adjustment 22. . . . . . . . . . . . . . . . . . . .
High Altitude Information 23. . . . . . . . . . . . . . . . . . . . .
Other Unit Adjustments 23. . . . . . . . . . . . . . . . . . . . . .
Service 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Repair Parts List 26. . . . . . . . . . . . . . . . . . . . . . . . . . . .
SureLight Troubleshooting 27. . . . . . . . . . . . . . . . . . . .
Start-Up & Performance Check List 31. . . . . . . . . . . .
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
WHAT TO DO IF YOU SMELL GAS:
Do not store or use gasoline or other
flammable vapors and liquids in the vi
cinity of this or any other appliance.
Installation and service must be per
formed by a qualified installer, ser
vice agency or the gas supplier.
Do not try to light any appliance.
Do not touch any electrical switch; do not use
any phone in your building.
Immediately call your gas supplier from a
neighbor's phone. Follow the gas supplier's
instructions.
If you cannot reach your gas supplier, call the
fire department.
Extinguish any open flames.
If the information in this manual is not
followed exactly, a fire or explosion
may result causing property damage,
personal injury, or death.
WARNING
Litho USA
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