Lennox G43UF - Manual

Lennox G43UF

A user manual for the Lennox G43UF Series gas furnace covers essential safety, operation, and maintenance guidelines. The document highlights critical hazards like fire, explosion, carbon monoxide poisoning, and electrical risks, stressing that installation and repairs must be handled by qualified professionals. Key topics include proper ventilation, annual inspections, filter care, and troubleshooting signs of malfunction–such as unusual noises or odors–to ensure safe and efficient heating system performance.

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Table of Contents:

  • Page 1 – Product Identification and Safety Warnings
  • Page 2 – Furnace Component Identification and Handling Safety
  • Page 3 – Critical Safety Warnings and Maintenance Risks
  • Page 4 – Furnace Operation and Gas Control Procedures
  • Page 5 – Furnace Maintenance and Electrical Safety Inspection
  • Page 6 – Annual Service Checklist and Pre-Technician Safety Checks
  • Page 7 – Furnace Repair Parts List
Loading the manual
Page 1

02/04

*2P0204*

504,898M

*P504898M*

G43UF

SERIES

Litho U.S.A.

504,898M
02/04

E

2004 Lennox Industries Inc.

Dallas, Texas, USA

GAS FURNACE

WHAT TO DO IF YOU SMELL GAS:

Do not store or use gasoline or other
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.

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.

FIRE OR EXPLOSION HAZARD.

Failure to follow safety warnings exact-
ly could result in serious injury, death,
or property damage.

WARNING

D

Leave the building immediately.

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About this manual

Brand
Lennox
Model
G43UF
Document type
Manual
Language(s)
English
Pages
7
File size
197.1 KB
Format
PDF

Summary

Page 1 - Product Identification and Safety Warnings

Cover information, fire or explosion hazards, and requirements for professional installation and service.

Page 2 - Furnace Component Identification and Handling Safety

Labeled diagram of furnace parts, safety cautions regarding fiberglass exposure, thermostat settings, overheating, and electrical safety.

Page 3 - Critical Safety Warnings and Maintenance Risks

Dangers associated with flood-damaged furnaces, improper installation or maintenance, carbon monoxide risks, ventilation requirements, avoiding combustible materials, and inspection necessity.

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