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
