Lennox EL180UHNE Series User Manual

EL180UHNE
SERIES
Litho U.S.A.
507648-01
02/2018
E 2018 Lennox Industries Inc.
Dallas, Texas, USA
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.
D Leave the building immediately.
GAS FURNACE
FIRE OR EXPLOSION HAZARD.
Failure to follow safety warnings exact
ly could result in serious injury, death,
or property damage.
WARNING
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, personal
injury or loss of life. Installation and service must be
performed by a licensed professional installer (or
equivalent), a service agency, or the gas supplier.
WARNING

Lennox EL180UHNE Series Specifications

General

Model	EL180UHNE Series
Type	Gas Furnace
Efficiency Rating	80% AFUE
Heating Stages	Single-stage
Ignition System	Hot Surface Ignition
Filter Type	Standard
Blower Type	Variable-speed
Fuel Type	Natural Gas

Summary

Parts Identification and Homeowner Notice

Notice to Homeowner

Information regarding safety devices and recommendations for unattended operation.

Safety Instructions and Warnings

Safety Instructions

Guidelines for maintaining a clear area, proper airflow, and avoiding specific substances.

Asphyxiation Hazard

Warning about the critical need for a leak-free and securely connected furnace exhaust vent.

Start-Up and Operation Procedures

Before Placing the Unit into Operation

Essential pre-operation checks, including smelling for gas around the appliance.

Placing the EL180UHNE Furnace into Operation

Instructions for starting the furnace, highlighting its automatic ignition system.

Operating the Gas Valve

Step-by-step guide for operating the gas valve safely, including safety precautions.

Turning Off Gas to the Unit

Procedure for safely shutting off the gas supply to the furnace.

Maintenance and Component Checks

Filters

Guidance on inspecting and replacing furnace filters for proper operation.

Maintenance Procedures

Details on annual system inspection and maintenance by a licensed professional.

Blower

Instructions for checking the blower wheel for debris and cleaning the motor.

Electrical Checks

Steps for verifying electrical connections, voltage, and motor amp-draw.

Service, Safety, and Planned Maintenance

Service Reminder

Checks to perform before calling for service and recording unit information.

Safety Precautions

Advice on recognizing and responding to unusual sounds, odors, or CO exposure symptoms.

Planned Service

Importance of vigilance for early detection of potential operational issues.

Annual Furnace Maintenance

Requirements for annual system checks to ensure safety and warranty compliance.

Comprehensive System Checks and Testing

Heat Exchanger Integrity

Procedure for evaluating heat exchanger integrity via AHRI inspection.

Combustion Air Availability

Ensuring sufficient, unobstructed combustion air supply to the furnace.

Venting System Inspection

Checking the furnace venting system for proper installation and obstructions.

Return Air Duct Connection

Inspection and sealing of the furnace return air duct connection.

General System Test

Testing furnace operation, ignition, safety devices, and gas pressure.

Repair Parts

Cabinet Parts

List of external cabinet components available for repair or replacement.

Control Panel Parts

List of internal control panel components for repair.

Blower Parts

List of components related to the blower assembly for repair.

Heating Parts

List of internal heating system components for repair.