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Lennox EL180UH100NE60C User Manual

Lennox EL180UH100NE60C
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Page 1
INSTALLATION
INSTRUCTIONS
EL180UHNE
507647-04
08/2021
Supersedes 507646-03
THIS MANUAL MUST BE LEFT WITH THE
HOMEOWNER FOR FUTURE REFERENCE
This is a safety alert symbol and should never be
ignored. When you see this symbol on labels or in man-
uals, be alert to the potential for personal injury or death.
IMPORTANT
DO NOT use the heat exchanger tubes to lift, drag or
pull the furnace to its installation location.
Doing so may damage or bend the tubes causing noise
and or unsafe operation.
HeatExchanger Tubes
© 2021 Lennox Industries Inc.
Dallas, Texas USA
ELITE
®
SERIES GAS FURNACE
UPFLOW / HORIZONTAL AIR DISCHARGE
Contents
Unit Dimensions .............................................................2
EL180UHN Gas Furnace................................................3
Shipping and Packing List ..............................................3
Safety .............................................................................3
Use of Furnace as a Construction Heaterl .....................4
General ...........................................................................5
Combustion, Dilution, Ventilation Air...............................5
Setting Equipment ..........................................................8
Filters ............................................................................ 11
Duct System ................................................................. 11
Venting..........................................................................14
Gas Piping ....................................................................18
Electrical .......................................................................20
Integrated Control .........................................................24
Unit Start-Up .................................................................25
Gas Pressure Measurement.........................................26
Proper Combustion.......................................................26
High Altitude .................................................................26
Other Unit Adjustments.................................................27
Service..........................................................................28
Start-Up Checklist.........................................................30
Blower Data ..................................................................33

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Lennox EL180UH100NE60C Specifications

General IconGeneral
BrandLennox
ModelEL180UH100NE60C
CategoryFurnace
LanguageEnglish

Summary

Installation Instructions

Safety Alerts and Warnings

Highlights critical safety symbols and provides important warnings for furnace handling and operation.

Furnace Overview and Safety

Safety Information and Certifications

Details critical safety warnings, cautions, and product certifications.

General Installation Guidelines

Combustion, Dilution, and Ventilation Air

Critical information on supplying adequate air for combustion and ventilation.

Combustion Air Requirements

Air Supply for Confined Spaces

Details air supply requirements for furnaces installed in confined spaces.

Horizontal Installation

Filters and Ductwork

Filter Requirements

Mandates a high-velocity filter and discusses its impact on system performance.

Venting and Return Air

Venting System Classification

Details on furnace venting classification and requirements for vertical venting.

Masonry Chimney Venting

Metal-Lined Masonry Chimney Venting

Requirements for common venting into metal-lined masonry chimneys.

Prohibited Venting Configurations

Critical warnings against specific venting practices, such as single appliance venting into tile-lined chimneys.

Common Venting Requirements

Venting System Rules

Gas Piping Requirements

Gas Supply Piping Installation

Guidelines for gas piping installation, torque, pressure drop, routing, and support.

Leak Checks and Electrical Safety

Gas Piping Leak Detection

Procedures for detecting gas leaks and safety precautions during testing.

Wiring and Grounding

Integrated Control Features

Unit Start-Up Procedures

Furnace Start-Up Sequence

Step-by-step instructions for safely initiating furnace operation.

Troubleshooting Unit Operation

A checklist to diagnose and resolve common issues preventing unit operation.

Gas Pressure and Altitude Adjustments

Gas Pressure and Flow Rate Checks

Procedures for adjusting gas pressure and verifying gas flow rate.

Service and Maintenance

Annual Furnace Maintenance Checklist

Recommended annual checks and maintenance tasks for optimal furnace performance.

Service Inspection Procedures

Guidelines for performing service checks, including static pressure and combustion analysis.

Start-Up and Performance Checks

Unit Set Up and Connection Checklist

A comprehensive checklist for verifying proper unit setup and connections before operation.

Unit Operation Verification

Heating Mode Performance Checks

Checks for gas pressure, combustion, blower amps, and temperature rise during heating.

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