11/00
*2P1100*
504,228M
*P504228M*
Page 1
E
2000 Lennox Industries Inc.
Dallas, Texas, USA
INSTALLATION
INSTRUCTIONS
G26 SERIES UNITS
GAS UNITS
504,228M
11/2000
Supersedes 503,885M
Table of Contents
Unit Dimensions
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
G26 Parts Identification
3
. . . . . . . . . . . . . . . . . . . . . . . . .
Requirements
4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General
4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation - Setting Equipment
5
. . . . . . . . . . . . . . . . . .
Return Air Opening Guidelines
5
. . . . . . . . . . . . . . . . . . .
Filters & Optional Filter Assembly
6
. . . . . . . . . . . . . . . .
Duct System
7
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pipe & Fittings Specifications
7
. . . . . . . . . . . . . . . . . . . .
Vent Piping Guidelines
8
. . . . . . . . . . . . . . . . . . . . . . . . . .
Joint Cementing Procedure
8
. . . . . . . . . . . . . . . . . . . . . .
Venting Practices
9
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gas Piping
15
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical
16
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unit Start-Up
20
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gas Pressure Adjustment
21
. . . . . . . . . . . . . . . . . . . . . .
High Altitude Information
22
. . . . . . . . . . . . . . . . . . . . . . .
Other Unit Adjustments
22
. . . . . . . . . . . . . . . . . . . . . . . .
Service
23
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Repair Parts
26
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting
26
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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 viĆ
cinity of this or any other appliance.
Installation and service must be per-
formed by a qualified installer, service
agency or the gas supplier.
D
Do not try to light any appliance.
D
Do not touch any electrical switch; do not use
any phone in your building.
D
Immediately call your gas supplier from a
neighbor's phone. Follow the gas supplier's
instructions.
D
If you cannot reach your gas supplier, call the
fire department.
D
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 U.S.A.
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