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INSTALLATION
INSTRUCTIONS
EL296UHV
507264-03
06/2017
Superseds 03/2017
© 2017 Lennox Industries Inc.
Dallas, Texas USA
ELITE
®
SERIIES GAS FURNACE
UP/FLOW HORIZONTAL AIR DISCHARGE
CAUTION
As with any mechanical equipment, personal injury can
result from contact with sharp sheet metal edges. Be
careful when you handle this equipment.
AIR FLOW
UPFLOW
AIR FLOW
AIR FLOW
HORIZONTAL RIGHT
HORIZONTAL LEFT
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.
NOTICE
A thermostat is not included and must be ordered
separately.
The Lennox icomforti
®
thermostat must be used in
communicating applications.
In non-communicating applications, the Lennox
ComfortSense® 7500 thermostat may be used, as well
as other non-communicating thermostats.
In all cases, setup is critical to ensure proper system
operation.
Field wiring for both communicating and non-
communicating applications is illustrated in diagrams,
which begin on Page 41.
Table of Contents
Unit Dimensions - inches (mm) .....................................2
Shipping and Packing List ..............................................3
Safety Information ..........................................................3
Use of Furnace as Construction Heater .........................4
General ...........................................................................5
Shipping Bolt Removal ...................................................8
Installation - Setting Equipment ......................................8
Filters ............................................................................13
Duct System .................................................................13
Pipe & Fittings Specications .......................................13
Joint Cementing Procedure .......................................... 15
Venting Practices ..........................................................16
Gas Piping ....................................................................36
Electrical .......................................................................39
Integrated Control .........................................................48
Conventional Thermostat (non-communicating) ...........49
Blower Data ..................................................................51
On-Board Links.............................................................55
Unit Start Up .................................................................57
Gas Pressure Adjustment .............................................58
Proper Cumbustion.......................................................59
High Altitude .................................................................59
Combustion Air for Non-Direct Vent Applications .........60
Repair Parts..................................................................60
Other Unit Adjustments.................................................61
Heating Sequence of Operation ...................................61
Service..........................................................................63
Program Unit Capacity/Size Mode ...............................65
Requirements for Commonwealth of Massachusetts ... 66
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