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INSTALLATION
INSTRUCTIONS
EL296DFE
507069-05
04/2022
Supersedes 10/2021
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.
© 2022 Lennox Industries Inc.
Dallas, Texas USA
ELITE
®
SEREIS GAS FURNACE
DOWNFLOW AIR DISCHARGE
Contents
Unit Dimensions - inches (mm) ......................................2
EL296DFE 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 ............................................................................12
Duct System .................................................................12
Pipe Fittings Specications...........................................12
Venting Options ............................................................13
Joint Cementing Procedure .......................................... 16
Venting Practices ..........................................................16
Vent Pipe Guidleines ....................................................18
Gas Piping ....................................................................35
Electrical .......................................................................37
Integrated Control .........................................................39
Unit Start-Up .................................................................48
Gas Pressure Measurement.........................................49
Proper Combustion.......................................................50
High Altitude .................................................................50
Other Unit Adjustments.................................................52
Sequence of Operation.................................................52
Service..........................................................................53
Star-Up and Performance Checklist ............................. 55
Repair Parts List ...........................................................58
Blower Data ..................................................................59
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