Lennox 90UGF SERIES

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Lennox 90UGF SERIES Specifications

General

Brand	Lennox
Model	90UGF SERIES
Category	Furnace
Language	English

Summary

General Safety and Emergency Procedures

Fire and Explosion Warning

Crucial warning about adhering to manual instructions to prevent fire or explosion.

Responding to Gas Smells

Detailed steps to follow if a gas odor is detected near the furnace.

Parts Identification

Furnace Component Identification

A labeled diagram illustrating the main parts of the 90UGF Series Gas Furnace.

Important Operational Safety and Guidelines

Health and Environmental Precautions

Information and warnings regarding fiberglass wool exposure.

Critical Operating Directives

Instructions on thermostat settings, airflow, and preventing hazardous conditions.

Carbon Monoxide Awareness

Details on carbon monoxide hazards and detection recommendations.

Lighting and Gas Valve Operation

Unit Ignition and Operation

Instructions for operating the SureLight ignition system and furnace.

Gas Valve Control Procedures

Procedures for operating the gas valve and turning gas off to the unit.

Filter Maintenance and Inspections

Furnace Filter Care

Instructions for cleaning, replacing, and locating furnace filters.

Seasonal Inspection Procedures

Recommended annual checks for the venting system and overall furnace condition.

System Checks and Service

Blower and Burner Flame Inspection

Procedures for inspecting the blower wheel and burner flame for proper operation.

Safety Precautions and Service Reminders

Advice on identifying operational issues and pre-call service checks.

Planned Annual Service Items

Key components and systems a service technician should check during annual inspection.