Lennox EL180UHN User Manual

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

Lennox EL180UHN Specifications

General

Brand	Lennox
Model	EL180UHN
Category	Furnace
Language	English