Lennox International Inc Elite Series Gas Furnace Venting Practices, Piping Suspension Guidelines

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8 - After assembly, wipe excess cement from pipe at end of fitting socket. A properly made joint will show a bead around its entire perimeter. Any gaps may indi­ cate an improper assembly due to insufficient sol­ vent.

9 - Handle joints carefully until completely set.

Venting Practices

Piping Suspension Guidelines

SCHEDULE 40

PVC - 5'

all other pipe* - 3'

* See table 2 for allowable pipe.

NOTE - Isolate piping at the point where it exits the outside wall or roof in order to prevent transmission of vibration to the structure.

NOTE - All horizontal runs of exhaust pipe must slope back to­ ward unit a minimum of 1/4” (6mm) drop for each 12” (305mm).

Wall Thickness Guidelines

24” maximum 3/4” minimum

inside

 

 

 

 

 

 

 

Wall outside

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

insulation

(if required)

FIGURE 20

1 - In areas where piping penetrates joists or interior walls, hole must be large enough to allow clearance on all sides of pipe through center of hole using a hanger.

2 - When furnace is installed in a residence where unit is shut down for an extended period of time, such as a vacation home, make provisions for draining conden­ sate collection trap and lines.

Removal of the Furnace from Common Vent

In the event that an existing furnace is removed from a venting system commonly run with separate gas ap­ pliances, the venting system is likely to be too large to properly vent the remaining attached appliances.

Conduct the following test while each appliance is operat­ ing and the other appliances (which are not operating) re­ main connected to the common venting system. If the venting system has been installed improperly, you must correct the system as indicated in the general venting re­ quirements section.

WARNING

CARBON MONOXIDE POISONING HAZARD

Failure to follow the steps outlined below for each appliance connected to the venting system being placed into operation could result in carbon mon­ oxide poisoning or death.

The following steps shall be followed for each ap­ pliance connected to the venting system being placed into operation, while all other appliances connected to the venting system are not in operation:

1 - Seal any unused openings in the common venting sys­ tem.

2 - Inspect the venting system for proper size and horizontal pitch. Determine that there is no blockage, restriction, leakage, corrosion, or other deficiencies which could cause an unsafe condition.

3 - Close all building doors and windows and all doors be­ tween the space in which the appliances remaining connected to the common venting system are located and other spaces of the building. Turn on clothes dry­ ers and any appliances not connected to the common venting system. Turn on any exhaust fans, such as range hoods and bathroom exhausts, so they will oper­ ate at maximum speed. Do not operate a summer ex­ haust fan. Close fireplace dampers.

4 - Follow the lighting instructions. Turn on the appliance that is being inspected. Adjust the thermostat so that the appliance operates continuously.

5 - After the main burner has operated for 5 minutes, test for leaks of flue gases at the draft hood relief opening. Use the flame of a match or candle.

6 - After determining that each appliance connected to the common venting system is venting properly, (step 3) return all doors, widows, exhaust fans, fireplace damp­ ers, and any other gas-burning appliances to their pre­ vious mode of operation.

7 - If a venting problem is found during any of the preced­ ing tests, the common venting system must be modi­ fied to correct the problem.

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Contents Table of Contents Installation Instructions EL296UHETOP View EL296UHE Unit Dimensions inches mmPackage 1 of 1 contains Safety InformationEL296UHE Gas Furnace Shipping and Packing ListInstallation Locations Installed in Combination with a Cooling CoilUse of Furnace as Construction Heater Combustion, Dilution & Ventilation Air GeneralEquipment in Confined Space ALL AIR from Inside Confined SpaceAir from Inside Unconfined SpaceAir from Outside Equipment in Confined Space ALL AIR from OutsideEquipment in Confined Space EL296 Furnaces with 1/2 HP Blower Motor Installation Setting EquipmentShipping Bolt Removal Moved before the furnace is placed into operation. Af­END View Setting EquipmentFront View Side ViewSide Return Air With transition and filter Return Air GuidelinesOptional Return Air Base Upflow Applications Only Removing the Bottom PanelFrontBack Horizontal Suspension KIT Horizontal Application Installation ClearancesSuspended Installation of Horizontal Unit Platform Installation of Horizontal UnitPipe & Fittings Specifications FiltersDuct System Primer & Solvent Cement Joint Cementing ProcedurePiping and Fittings Specifications SpecificationRemoval of the Furnace from Common Vent Venting PracticesPiping Suspension Guidelines Wall Thickness GuidelinesMinimum Vent Pipe Lengths Horizontal Installation Offset RequirementsVent Piping Guidelines Exhaust Piping Figures 22, 24Piping Size Process Standard Concentric Outdoor Termination Usage135 Standard Termination Elevation 4500 10,000 ftMaximum Allowable Intake or Exhaust Vent Length in Feet Concentric Termination at Elevation 0 4500 ftConcentric Termination Elevation 4501 10,000 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 Exiting Exhaust and Intake Vent Different pressure zones Direct Vent Roof Termination KITEL296UHE 51MM 76MM Alternate Terminations Tee & Forty-Five Degree Elbows OnlySupport 51MM 7MM Vent PipeSide View Front ViewTop 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 PVCGas Piping Leak CheckPlugged TAP Left Side Piping Standard Right Side Piping Alternate Horizontal Applications Possible Gas Piping ConfigurationsGAS Pipe Capacity FT3/HR kL/HR Precautions and ProceduresInterior MAKE-UP BOX Installation ElectricalOn-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 Heat / 1 Cool OFFWith tstat with Humidity control7000 L7724U Single StageHeat Pump ComfortSenseOFF Unit Start-Up For Your Safety Read Before OperatingGas Pressure Adjustment GAS Meter Clocking ChartDial Proper Combustion High Altitude Information Carbon Monoxide Poisoning Hazard Heating Sequence of Operation Other Unit AdjustmentsBlower Parts Repair Parts ListCabinet Parts Control Panel PartsFilters ServiceCleaning The Burner Assembly BlowerTypical Start-Up & Performance Check ListVent Pipe Temperature RiseTotal External Static Drain Line Condensate Line ThermostatApproved 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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