Lennox International Inc Installation Guide for Lennox Elite Series Gas Furnaces
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EQUIPMENT IN CONFINED SPACE -

ALL AIR FROM OUTSIDE

Installation - Setting Equipment

ROOF TERMINATED EXHAUST PIPE

SIDE WALL

TERMINATED EXHAUST PIPE (ALTERNATE LOCATION)

OUTLET AIR

FURNACE

INLET AIR

WARNING

Do not connect the return air duct to the back of the furnace. Doing so will adversely affect the operation of the safety control devices, which could result in personal injury or death.

WARNING

Blower access panel must be securely in place when blower and burners are operating. Gas fumes, which could contain carbon monoxide, can be drawn into

NOTE-Each air duct opening shall have a free area of at least one square inch per 2,000 Btu (645mm2 per .59kW) per hour of the total input rating of all equipment in the enclosure. If the equipment room is located against an outside wall and the air openings communi­ cate directly with the outdoors, each opening shall have a free area of at least 1 square inch per 4,000 Btu (645mm2 per 1.17kW) per hour of the total input rating of all other equipment in the enclosure.

FIGURE 9

Shipping Bolt Removal

Units with 1/2 hp blower motor are equipped with three flex­ ible legs and one rigid leg. The rigid leg is equipped with a shipping bolt and a flat white plastic washer (rather than the rubber mounting grommet used with a flexible mounting leg). See figure 10. The bolt and washer must be re­

moved before the furnace is placed into operation. Af­

ter the bolt and washer have been removed, the rigid leg will not touch the blower housing.

EL296 Furnaces with 1/2 HP Blower Motor

RIGID LEG (Remove shipping bolt and washer)

FIGURE 10

living space resulting in personal injury or death.

Upflow Applications

The EL296UHE gas furnace can be installed as shipped in the upflow position. Refer to figure 12 for clearances. Select a location that allows for the required clearances that are listed on the unit nameplate. Also consider gas supply connections, electrical supply, vent connection, condensate trap and drain connections, and installation and service clearances [24 inches (610 mm) at unit front]. The unit must be level from side to side. The unit may be positioned from level to ½” toward the front. See figure 11.

Allow for clearances to combustible materials as indicated on the unit nameplate.

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Contents Installation Instructions EL296UHE Table of ContentsEL296UHE Unit Dimensions inches mm TOP ViewSafety Information EL296UHE Gas FurnaceShipping and Packing List Package 1 of 1 containsUse of Furnace as Construction Heater Installation LocationsInstalled in Combination with a Cooling Coil General Combustion, Dilution & Ventilation AirConfined Space Air from InsideUnconfined Space Equipment in Confined Space ALL AIR from InsideEquipment in Confined Space Air from OutsideEquipment in Confined Space ALL AIR from Outside Installation Setting Equipment Shipping Bolt RemovalMoved before the furnace is placed into operation. Af­ EL296 Furnaces with 1/2 HP Blower MotorSetting Equipment Front ViewSide View END ViewReturn Air Guidelines Side Return Air With transition and filterFrontBack Optional Return Air Base Upflow Applications OnlyRemoving the Bottom Panel Horizontal Application Installation Clearances Suspended Installation of Horizontal UnitPlatform Installation of Horizontal Unit Horizontal Suspension KITDuct System Pipe & Fittings SpecificationsFilters Joint Cementing Procedure Piping and Fittings SpecificationsSpecification Primer & Solvent CementVenting Practices Piping Suspension GuidelinesWall Thickness Guidelines Removal of the Furnace from Common VentHorizontal Installation Offset Requirements Vent Piping GuidelinesExhaust Piping Figures 22, 24 Minimum Vent Pipe LengthsPiping Size Process Outdoor Termination Usage Standard ConcentricStandard Termination Elevation 4500 10,000 ft 135Concentric Termination Elevation 4501 10,000 ft Maximum Allowable Intake or Exhaust Vent Length in FeetConcentric Termination at Elevation 0 4500 ft Standard Termination Elevation 4500 10,000 ft Applications Right Hand Discharge Shown Intake Piping General Guidelines for Vent Terminations 32 to 20 to US Installations1 Canadian Installations2 Inside Corner DetailNo minimum to outside corner EL296UHE Exiting Exhaust and Intake Vent Different pressure zonesDirect Vent Roof Termination KIT Alternate Terminations Tee & Forty-Five Degree Elbows Only 51MM 76MM51MM 7MM Vent Pipe SupportTop View Side ViewFront View Exhaust EL296UHE Direct Vent Application Using Existing Chimney NON-DIRECT Vent Roof Termination KITEL296UHE NON-DIRECT Vent Application Using Existing Chimney Condensate PipingCondensate Trap With Optional Overflow Switch Condensate Trap LocationsEL296UHE with Evaporator Coil Using a Common Drain Unit shown in horizontal left-hand discharge positionTrap / Drain Assembly Using 1/2 PVC or 3/4 PVC 178Plugged TAP Gas PipingLeak Check Horizontal Applications Possible Gas Piping Configurations Left Side Piping Standard Right Side Piping AlternatePrecautions and Procedures Interior MAKE-UP BOX InstallationElectrical GAS Pipe Capacity FT3/HR kL/HROn-Board Links and Diagnostic Push Button Figure Typical EL296UHE Wiring Diagram Integrated Control LEDIntegrated Control DIP Switch Settings EL296 Field Wiring Applications With Conventional Thermostat OFF With tstat withHumidity control Heat / 1 CoolSingle Stage Heat PumpComfortSense 7000 L7724UOFF For Your Safety Read Before Operating Unit Start-UpDial Gas Pressure AdjustmentGAS Meter Clocking Chart Proper Combustion High Altitude Information Carbon Monoxide Poisoning Hazard Other Unit Adjustments Heating Sequence of OperationRepair Parts List Cabinet PartsControl Panel Parts Blower PartsService Cleaning The Burner AssemblyBlower FiltersStart-Up & Performance Check List TypicalTemperature Rise Total External Static Drain LineCondensate Line Thermostat Vent PipeRequirements for Commonwealth of Massachusetts Approved Carbon Monoxide Detectors

EL296UHE, Elite Series Gas Furnace specifications

Lennox International Inc. has long been a trusted name in the heating, ventilation, and air conditioning (HVAC) industry, and their Elite Series Gas Furnace, the EL296UHE, stands out as a remarkable choice for homeowners seeking efficiency and reliability. This gas furnace is designed to deliver exceptional performance while ensuring the comfort of your living space.

One of the most significant features of the EL296UHE is its impressive Annual Fuel Utilization Efficiency (AFUE) rating of up to 96%. This means that a substantial portion of the energy consumed is converted into heat, translating to lower energy bills and a reduced environmental footprint. By minimizing energy waste, homeowners can enjoy both cost savings and greater environmental responsibility.

The EL296UHE is equipped with a two-stage heating process that allows it to operate at different speeds. This dual-stage functionality offers a more consistent temperature throughout the home, minimizing cold spots and enhancing overall comfort. Additionally, this furnace features a variable-speed blower motor, which not only improves the distribution of heated air but also quietly adjusts the airflow to match the heating requirements of your space.

In terms of technology, the EL296UHE incorporates advanced design elements such as a patented ZenBalance™ technology. This innovation further increases efficiency by adjusting the heating output based on real-time demands, ensuring optimal comfort without excessive energy consumption.

Durability is another hallmark of the EL296UHE. Constructed with high-quality materials, this furnace is built to withstand the rigors of daily use. Its stainless-steel heat exchanger is particularly noteworthy, as it enhances the furnace's ability to operate efficiently while maximizing longevity.

Homeowners are also reassured by the EL296UHE's quiet operation. The design minimizes operational noise, making it an ideal choice for those who prefer a peaceful home environment. Furthermore, the furnace is equipped with an ENERGY STAR® certification, a testament to its energy-efficient performance.

Lastly, Lennox offers comprehensive warranties for the EL296UHE, ensuring peace of mind for consumers. The combination of high efficiency, advanced technology, and durability makes the Lennox Elite Series Gas Furnace, EL296UHE, an excellent investment for homeowners looking to enhance their heating systems for optimal comfort and efficiency.
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