Lennox G24M4/5-120 User Manual

Page 1

2000 Lennox Industries Inc.
Dallas, Texas
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
INSTALLATION
INSTRUCTIONS
G24M Series
GAS FURNACE
SureLight Ignition System
504,197M
02/2000
Supersedes 503,981M
Table of Contents
G24M Unit Dimensions 2. . . . . . . . . . . . . . . . . . . . . .
G24M Parts Arrangement 3. . . . . . . . . . . . . . . . . . . .
G24M Gas Furnace 3. . . . . . . . . . . . . . . . . . . . . . . . .
Shipping and Packing List 3. . . . . . . . . . . . . . . . . . . .
Requirements 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Combustion, Dilution & Ventilation Air 5. . . . . . . . . .
Setting Equipment 8. . . . . . . . . . . . . . . . . . . . . . . . . .
Duct System 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Venting 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gas Piping 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unit Start-up 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gas Pressure Adjustment 25. . . . . . . . . . . . . . . . . . .
High Altitude Information 25. . . . . . . . . . . . . . . . . . . .
Other Unit Adjustments 25. . . . . . . . . . . . . . . . . . . . .
Service 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Repair Parts List 28. . . . . . . . . . . . . . . . . . . . . . . . . . .
Ignition Control Board Diagnostic Codes 28. . . . . .
Troubleshooting 29. . . . . . . . . . . . . . . . . . . . . . . . . . .
G24M Start-up & Performance Check List 32. . . . .
WHAT TO DO IF YOU SMELL GAS:
If the information in this manual is not
followed exactly, a fire or explosion
may result causing property damage,
personal injury or death.
WARNING
Do not store or use gasoline or oth
er flammable vapors and liquids in
the vicinity of this or any other ap
pliance.
Installation and service must be
performed by a qualified installer,
service 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 suppli
er's instructions.
If you cannot reach your gas supplier, call
the fire department.
Extinguish any open flames.
Litho USA

Lennox G24M4/5-120 Specifications

General

Brand	Lennox
Model	G24M4/5-120
Category	Furnace
Language	English