Lennox International Inc Elite Series Gas Furnace, EL296UHE installation instructions

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Accessory Terminals

One line voltage “ACC” 1/4” spade terminal is provided on the furnace integrated control. See figure 65 for integrated

control configuration. This terminal is energized when the indoor blower is operating. Any accessory rated up to one amp can be connected to this terminal with the neutral leg of the circuit being connected to one of the provided neutral

terminals. If an accessory rated at greater than one amp is connected to this terminal, it is necessary to use an exter­ nal relay.

An unpowered, normally open (dry) set of contacts with a 1/4” spade terminal “HUM” are provided for humidifier con­

nections and may be connected to 24V or 120V. Any hu­ midifier rated up to one amp can be connected to these ter­ minals. In 120V humidifier applications the neutral leg of the circuit can be connected to one of the provided neutral terminals. This terminal is energized in the heating mode.

Install the room thermostat according to the instructions provided with the thermostat. See figure 64 for thermostat designations. If the furnace is being matched with a heat pump, refer to the FM21 installation instruction or appropri­ ate dual fuel thermostat instructions.

Indoor Blower Speeds

1 - When the thermostat is set to “FAN ON,” the indoor blower will run continuously on the field selectable fan speed (“LOW HEAT” is default) when there is no cool­ ing or heating demand.

2 - When the EL296UHE is running in the heating mode, the indoor blower will run on the 'LOW HEAT” or “HIGH HEAT” speed per demand.

3 - When there is a cooling demand, the indoor blower will run on the “LOW COOL” or “HIGH COOL” speed per demand.

Generator Use - Voltage Requirements

The following requirements must be kept in mind when specifying a generator for use with this equipment:

DThe furnace requires 120 volts + 10% (Range: 108 volts to 132 volts).

DThe furnace operates at 60 Hz + 5% (Range: 57 Hz to 63 Hz).

DThe furnace integrated control requires both polarity and proper ground. Both polarity and proper grounding should be checked before attempting to operate the furnace on either permanent or temporary power.

DGenerator should have a wave form distortion of less than 5% THD (total harmonic distortion).

On-Board Links and Diagnostic Push Button (Figure 65)

WARNING

Carefully review all configuration information pro­ vided. Failure to properly set DIP switches, jumpers and on-board links can result in improper operation!

On-Board Link W914 Dehum

On-board link W914, is a clippable connection between ter­ minals R and DS on the integrated control. W914 must be cut when the furnace is installed with a thermostat which features humidity control. If the link is not cut, terminal “DS” will remain energized not allowing the blower to reduce to low cool speed upon a call for dehumidification.

On-Board Link W951 Heat Pump (R to O)

On-board link W951 is a clippable connection between ter­ minals R and O on the integrated control. W951 must be cut when the furnace is installed in applications which include a heat pump unit and a thermostat which features dual fuel use. If the link is left intact, terminal “O” will remain ener­ gized eliminating the HEAT MODE in the heat pump.

On-Board Link W915 2 Stage Compr (Y1 to Y2)

On-board link W915 is a clippable connection between ter­ minals Y1 and Y2 on the integrated control. W915 must be cut if two-stage cooling will be used. If the Y1 to Y2 link is not cut the outdoor unit will operate in second-stage cool­ ing only.

Diagnostic Push Button

The diagnostic push button is located adjacent to the seven-segment diagnostic LED. This button is used to en­ able the Error Code Recall “E” mode and the Flame Signal “F” mode. Press the button and hold it to cycle through a menu of options. Every five seconds a new menu item will be displayed. When the button is released, the displayed item will be selected. Once all items in the menu have been displayed, the menu resumes from the beginning until the button is released.

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Contents Table of Contents Installation Instructions EL296UHETOP View EL296UHE Unit Dimensions inches mmEL296UHE Gas Furnace Safety InformationShipping and Packing List Package 1 of 1 containsUse of Furnace as Construction Heater Installation LocationsInstalled in Combination with a Cooling Coil Combustion, Dilution & Ventilation Air GeneralAir from Inside Confined SpaceUnconfined Space Equipment in Confined Space ALL AIR from InsideEquipment in Confined Space Air from OutsideEquipment in Confined Space ALL AIR from Outside Shipping Bolt Removal Installation Setting EquipmentMoved before the furnace is placed into operation. Af­ EL296 Furnaces with 1/2 HP Blower MotorFront View Setting EquipmentSide View END ViewSide Return Air With transition and filter Return Air GuidelinesFrontBack Optional Return Air Base Upflow Applications OnlyRemoving the Bottom Panel Suspended Installation of Horizontal Unit Horizontal Application Installation ClearancesPlatform Installation of Horizontal Unit Horizontal Suspension KITDuct System Pipe & Fittings SpecificationsFilters Piping and Fittings Specifications Joint Cementing ProcedureSpecification Primer & Solvent CementPiping Suspension Guidelines Venting PracticesWall Thickness Guidelines Removal of the Furnace from Common VentVent Piping Guidelines Horizontal Installation Offset RequirementsExhaust Piping Figures 22, 24 Minimum Vent Pipe LengthsPiping Size Process Standard Concentric Outdoor Termination Usage135 Standard Termination Elevation 4500 10,000 ftConcentric 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 Inside Corner Detail US Installations1 Canadian Installations2No minimum to outside corner EL296UHE Exiting Exhaust and Intake Vent Different pressure zonesDirect Vent Roof Termination KIT 51MM 76MM Alternate Terminations Tee & Forty-Five Degree Elbows OnlySupport 51MM 7MM Vent PipeTop View Side ViewFront View Exhaust NON-DIRECT Vent Roof Termination KIT EL296UHE Direct Vent Application Using Existing ChimneyCondensate Piping EL296UHE NON-DIRECT Vent Application Using Existing ChimneyCondensate Trap Locations Condensate Trap With Optional Overflow SwitchUnit shown in horizontal left-hand discharge position EL296UHE with Evaporator Coil Using a Common Drain178 Trap / Drain Assembly Using 1/2 PVC or 3/4 PVCPlugged TAP Gas PipingLeak Check Left Side Piping Standard Right Side Piping Alternate Horizontal Applications Possible Gas Piping ConfigurationsInterior MAKE-UP BOX Installation Precautions and ProceduresElectrical GAS Pipe Capacity FT3/HR kL/HROn-Board Links and Diagnostic Push Button Figure Typical EL296UHE Wiring Diagram LED Integrated ControlIntegrated Control DIP Switch Settings EL296 Field Wiring Applications With Conventional Thermostat With tstat with OFFHumidity control Heat / 1 CoolHeat Pump Single StageComfortSense 7000 L7724UOFF Unit Start-Up For Your Safety Read Before OperatingDial Gas Pressure AdjustmentGAS Meter Clocking Chart Proper Combustion High Altitude Information Carbon Monoxide Poisoning Hazard Heating Sequence of Operation Other Unit AdjustmentsCabinet Parts Repair Parts ListControl Panel Parts Blower PartsCleaning The Burner Assembly ServiceBlower FiltersTypical Start-Up & Performance Check ListTotal External Static Drain Line Temperature RiseCondensate Line Thermostat Vent PipeApproved Carbon Monoxide Detectors Requirements for Commonwealth of Massachusetts

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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