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Lennox EL196UHE Series

Lennox EL196UHE Series
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UNIT INFORMATIONUNIT INFORMATION
Service Literature
©2016 Lennox Industries, Inc.
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 HVAC
instale (or equivalent), service agency or the gas
supplier.
CAUTION
As with any mechanical equipment, contact with
sharp sheet metal edges can result in personal
injury. Take care while handling this equipment and
wear gloves and protective clothing.
󰀩
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      
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WARNING
Electric shock hazard. Can cause injury
or death. Before attempting to perform
any service or maintenance, turn the
electrical power to unit OFF at disconnect
switch(es). Unit may have multiple power
supplies.
Table of Contents

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EL196UHE


EL196UHE SERIES UNITS
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Lennox EL196UHE Series Specifications

General IconGeneral
ModelEL196UHE Series
Efficiency Rating96% AFUE
Blower TypeVariable Speed
Ignition TypeHot Surface Ignition
WarrantyLimited Lifetime Heat Exchanger
FuelNatural Gas or Propane
Product TypeGas Furnace
Motor TypeECM
Voltage115V
Cooling CapacityNot Applicable

Summary

EL196 UHE SERIES UNITS

Electric Shock Hazard

Hazard of electric shock during service or maintenance.

Improper Installation Hazard

Hazard of property damage or injury from improper installation/service.

Sharp Metal Edges

Risk of injury from sharp metal edges.

SPECIFICATIONS

Gas Heating Performance

AFUE, input/output, temp rise, gas manifold pressure.

Energy Star Certified

Certification status of the unit.

Connections

Intake/exhaust pipe size, gas pipe size, condensate drain trap.

Indoor Blower

Wheel diameter, width, motor type, output, cooling tons, air volume.

Electrical Data

Voltage, amps, overcurrent protection.

OPTIONAL ACCESSORIES - ORDER SEPARATELY

Cabinet Accessories

Suspension kit, return air base, economizer options.

Condensate Drain Kits

Drain heat cable, crawl space vent drain kit options.

Controls

Relay kit, twinning panel, thermostat, sensor options.

Filter Kits

Air filter and rack kits for the unit.

Termination Kits

Direct vent, flush-mount, wall-close couple kit options.

Venting

Flue coupling options for venting.

BLOWER DATA

EL196 UH030 XE36 B Performance

Blower data tables for specific model.

EL196 UH045 XE36 B Performance

Blower data tables for specific model.

EL196 UH070 XE36 B Performance

Blower data tables for specific model.

BLOWER DATA

EL196 UH090 XE48 C Performance

Blower data tables for specific model.

EL196 UH110 XE60 C Performance

Blower data tables for specific model.

PARTS IDENTIFICATION

I-UNIT COMPONENTS

Electrostatic Discharge (ESD) Precautions

Precautions to prevent ESD damage to electronic components.

Control Box Components

Details of transformer, circuit breaker, and interlock switch.

Transformer (T1)

Description of the transformer's rating and function.

Door Interlock Switch (S51)

Description of the door interlock switch.

Circuit Breaker (CB8)

Description of the circuit breaker's rating and function.

Integrated Ignition Control (A92)

Details of the ignition control system and its features.

IGNITION CONTROL COMPONENTS

Electronic Ignition

Explanation of the electronic ignition sequence and troubleshooting.

Fan Time Control

Details on heating and cooling fan on/off times.

B-Heating Components

Flame Rollout Switches

Description and function of flame rollout switches.

Heat Exchanger

Description of the heat exchanger construction and function.

Primary Limit Control

Description and function of the primary limit control.

FURNACE COMPONENTS

Gas Valve

Description of the gas valve, its terminals, and adjustment.

Flame Sensor

Description, function, and measurement of the flame signal.

Ignitor

Description of the ignitor and how to check it.

COMBUSTION AIR COMPONENTS

Combustion Air Inducer & Cold End Header Box

Description of the inducer and header box.

Combustion Air Pressure Switch

Description and function of the combustion air pressure switch.

C- Blower Compartment

Blower Wheel Replacement

Instructions for replacing the blower wheel.

Secondary Limit Controls

Description and function of secondary limit controls.

MOTOR REPLACEMENT

Replacing the Motor Module

Steps to replace the motor control module.

Testing the Motor

Procedure for testing the motor.

II-PLACEMENT AND INSTALLATION

Pipe & Fittings Specifications

Approved piping and fitting materials and their specifications.

Primer & Solvent Cement

Primer and solvent cement specifications.

Canada Pipe & Fitting & Solvent Cement

Canadian specifications for pipe, fittings, and cement.

Polypropylene Venting System

Approved polypropylene venting systems.

UL 1738 Certified Gas Venting System

Approved UL 1738 certified gas venting systems.

JOINT CEMENTING PROCEDURE

VENTING PRACTICES

Piping Suspension Guidelines

Guidelines for suspending vent piping.

Wall Thickness Guidelines

Guidelines for wall thickness and pipe clearance.

Exhaust Piping

Instructions for routing exhaust piping.

VENT PIPING GUIDELINES

Piping Size Process

Steps for sizing vent pipe diameter.

INTAKE PIPING

GENERAL GUIDELINES FOR VENT TERMINATIONS

VENT TERMINATION CLEARANCES FOR NON-DIRECT VENT INSTALLATIONS

VENT TERMINATION CLEARANCES FOR DIRECT VENT INSTALLATIONS

DETAILS OF EXHAUST PIPING TERMINATIONS FOR DIRECT VENT INSTALLATIONS

EXHAUST PIPING TERMINATIONS

Details of Exhaust Piping Terminations for Non-Direct Vent Applications

Instructions for non-direct vent exhaust piping terminations.

Condensate Piping

Procedures for condensate drain line installation.

III-START-UP

Preliminary and Seasonal Checks

Checks before unit start-up and seasonal maintenance.

Heating Start-Up

Procedure for starting the furnace in heating mode.

Priming Condensate Trap

Steps to prime the condensate trap.

Gas Valve Operation

Procedure for operating the gas valve.

Turning Off Gas to Unit

Procedure for turning off gas to the unit.

Failure To Operate

Troubleshooting steps for unit failure to operate.

IV-HEATING SYSTEM SERVICE CHECKS

C.S.A. Certification

CSA certification information for the unit.

Gas Piping

Guidelines for gas piping installation.

Testing Gas Piping

Procedures for testing gas piping for leaks.

Testing Gas Supply Pressure

Testing gas supply pressure and flow.

Supply Pressure Measurement

How to measure supply gas pressure.

Manifold Pressure Measurement

How to measure manifold pressure.

COMBUSTION AND ALTITUDE ADJUSTMENTS

Proper Combustion

Guidelines for checking proper combustion and CO levels.

High Altitude

Considerations for high altitude installations.

PROPER GROUND AND VOLTAGE

V-TYPICAL OPERATING CHARACTERISTICS

Blower Operation and Adjustment

General procedure for blower operation and adjustment.

Temperature Rise

How temperature rise is determined and set.

External Static Pressure

Procedure for measuring external static pressure.

Blower Speed Taps

How to change blower speed tap settings.

VI-MAINTENANCE

Blower

Maintenance checks for the blower assembly.

Filters

Filter inspection and replacement recommendations.

Electrical

Electrical checks for loose connections and voltage.

Check Motor Amp Draw

Procedure for checking motor amp draw.

MAINTENANCE PROCEDURES

Winterizing and Condensate Trap Care

Procedures for winterizing and caring for the condensate trap.

Condensate Hose Screens

Checking and cleaning condensate hose screens.

Cleaning Heat Exchanger

Step-by-step procedure for cleaning the heat exchanger.

BURNER ASSEMBLY CLEANING

VII-WIRING DIAGRAM AND SEQUENCE OF OPERATION

Blower Speed Chart

Chart showing blower speed tap connections for different models.

Heating Units-Gas

Wiring diagram details for gas heating units.

Sequence of Operation

Step-by-step description of the heating sequence of operation.

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