Lennox EL196UH070XE36B User Manual

Page 1
INSTALLATION
INSTRUCTIONS
EL196UHE
507764-05
04/2020
Supersedes 507764-04
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.
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 installer (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.
© 2020 Lennox Industries Inc.
Dallas, Texas USA
ELITE
®
SERIES GAS FURNACE
UPFLOW / HORIZONTAL AIR DISCHARGE
Contents
Unit Dimensions - inches (mm) ......................................2
EL196UHE......................................................................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 ............................................................................13
Duct System .................................................................13
3LSH)LWWLQJV6SHFL¿FDWLRQV...........................................13
Joint Cementing Procedure ..........................................16
Venting Practices ..........................................................16
Gas Piping ....................................................................36
Electrical .......................................................................39
Unit Start-Up .................................................................42
Gas Pressure Measurement.........................................44
Proper Combustion.......................................................44
High Altitude .................................................................44
Testing Combustion Air For Non-Dierct Vent ................46
Other Unit Adjustments.................................................46
Service..........................................................................48
Repair Parts List ...........................................................49
Start-Up Checklist.........................................................51
Blower Data ..................................................................53

Lennox EL196UH070XE36B Specifications

General

Model	EL196UH070XE36B
Efficiency Rating	96% AFUE
Fuel Type	Natural Gas
Configuration	Upflow/Horizontal
Type	Gas Furnace
Stages	Single-Stage
Input BTU	70, 000 BTU/h
Warranty	10-Year Limited Warranty on covered components
Heating Capacity	66, 000 BTU/h
Dimensions	33 in H x 17.5 in W x 28.75 in D

Summary

Installation Instructions

Unit Dimensions

Physical size and measurement details of the furnace unit.

Safety Information

Critical warnings, cautions, and dangers related to installation and operation.

Installation Locations

Guidelines for choosing suitable locations for furnace installation.

Combustion, Dilution, Ventilation Air

Requirements for air supply for efficient and safe furnace operation.

Setting Equipment

Procedures and considerations for properly positioning the furnace.

Venting Practices

Guidelines and requirements for installing vent piping and terminations.

Gas Piping

Instructions and safety precautions for connecting the gas supply.

Unit Start-Up

Procedures for safely initiating furnace operation and initial checks.

Service

Routine maintenance tasks and procedures for ensuring optimal furnace performance.

Blower Data

Tables detailing blower performance (air volume and watts) at various static pressures.

ComfortSense 5500 Thermostat

Features

Overview of the thermostat's capabilities and design.

Home Screen Information

Explanation of the thermostat's main display elements and indicators.

Operating Mode Selection

How to choose between heating, cooling, fan, and schedule modes.

User Menu Screen

Navigation to access notifications, reports, schedules, and settings.

Installer Settings

Configuration options for professional installation and system setup.

Diagnostic Information

Table of error codes, conditions, system actions, and recovery.

Installation Checklist

A step-by-step verification list for proper thermostat installation.