Lennox International Inc EL280UH Horizontal Left Position, Horizontal Right Position

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Horizontal Position

HORIZONTAL LEFT POSITION

Top Vent Discharge

HORIZONTAL RIGHT POSITION

Top Vent Discharge

Vent Pipe

Vent Pipe

Flue

Transition

Cover Plate

Pressure Switch

AIR

FLOW

Flue Transition

AIR

FLOW

Pressure Switch

Cover Plate

Collector Box

Make−Up Box

Collector Box

SDisconnect pressure switch hose from barbed fitting on the pres- sure switch assembly. Remove pressure switch assembly (1 screw) and cut wire tie to free pressure switch wires. Re−install pressure switch on the other side of orifice plate and re−connect pressure switch hose.

SRe−secure pressure switch wires by either pulling excess wires through the blower compartment and securing with supplied wire tie or coil excess wire and secure to the gas manifold.

FIGURE 19

HORIZONTAL LEFT POSITION

Side Vent Discharge

Pressure Switch

AIR

FLOW

Flue Transition

Make−Up Box

Collector Box

SDisconnect pressure switch hose from barbed fitting on the pressure switch assembly. Remove pressure switch assembly (1 screw) and cut wire tie to free pressure switch wires. Re− install pressure switch on the other side of orifice plate and re− connect pressure switch hose.

SRe−secure pressure switch wires by either pulling excess wires through the blower compartment and securing with supplied wire tie, or coil excess wire and secure to the gas manifold.

Make−Up Box

SGas supply piping must be brought into the unit from the bottom in order to accommodate the flue pipe.

SRemove make−up box assembly (2 screws) and cut wire tie to free make−up box wires. Re−install make−up box on other side of cabinet.

SRe−secure make−up box wires by either pulling excess wires through the blower compartment and securing with supplied wire tie, or coil excess wire and secure to the gas manifold.

FIGURE 21

 

HORIZONTAL RIGHT POSITION

 

Side Vent Discharge

 

Pressure Switch

AIR

 

FLOW

Flue

 

 

Transition

 

Collector Box

 

make up box

 

FIGURE 22

FIGURE 20

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Contents Installation Instructions EL280UH Table of ContentsUnit Dimensions − inches mm Supply AIR OpeningParts Arrangement Shipping and Packing List Safety InformationEL280UH Gas Furnace Use of Furnace as Construction Heater GeneralCombustion, Dilution & Ventilation Air Equipment in Confined Space ALL AIR from Inside Equipment in Confined Space Setting Equipment Return Air Bracket Filters Duct SystemVenting Upflow PositionHorizontal Left Position Horizontal Right PositionVent Connection Upflow and Horizontal Position Common Venting Using Metal−Lined Masonry Chimney −1/2 To these instructions and the provided venting tables. If Feet FAN + FAN FAN + NAT 130 Carbon Monoxide Poisoning Hazard Gas Piping Leum gasesHorizontal Applications Possible Gas Piping Configurations Electrostatic Discharge ESD Interior MAKE−UP BOX InstallationElectrical Page Field Wiring Applications OFF EL280UH Schematic Wiring Diagram Typical EL280UH Field Wiring Diagram TWO−STAGE Integrated ControlIntegrated Control For Your Safety Read Before Lighting Unit Start−UpHigh Altitude Gas Pressure AdjustmentProper Combustion Manifold Pressure Settings at all Altitudes Other Unit Adjustments Heat FAN-OFF Time in SecondsHeating Sequence of Operation Blower Data Pressure Bottom and One Side Service Electrical SHOCK, Fire Or Explosion HazardEL280UH BURNER, Combustion AIR Inducer Assembly Heat Exchanger RemovalPage Planned Service Repair Parts ListLED Integrated Control Diagnostic CodesFlash Code Status / Error Description Troubleshooting Heating Sequence of Operation On NextHeating Sequence of Operation U1.40 microamps Or Heat Demand is SATISFIED. a Five Troubleshooting Cooling Sequence of Operation Cooling Sequence of OperationTroubleshooting Continuous Fan Sequence of Operation Continuous LOW Speed FAN Sequence of OperationStart−Up & Performance Check List Unit Operation Cooling ModeTemperature Rise Drain Line
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Elite Series Gas Furnace Upflow/Horizontal Air Discharge, EL280UH specifications

Lennox International Inc. has established itself as a leader in the heating and cooling industry, providing innovative solutions for both residential and commercial environments. One of their notable products is the EL280UH, a high-efficiency gas furnace designed to offer optimal comfort while minimizing energy consumption.

The EL280UH operates with an impressive Annual Fuel Utilization Efficiency (AFUE) rating of up to 80%. This efficiency rating means that 80% of the fuel consumed is converted into heat, making it a cost-effective option for homeowners looking to reduce their utility bills. The furnace’s design is tailored to deliver reliable warmth during the coldest months, ensuring a comfortable home environment.

A key feature of the EL280UH is its two-stage heating capability. This technology allows the furnace to operate at a lower heating output for less demanding conditions, which not only conserves energy but also helps maintain a more consistent temperature in the home. When the demand for heat increases, the furnace can seamlessly transition to its higher output setting, providing quick and effective heating when needed.

Additionally, the EL280UH is equipped with a durable cabinet that minimizes heat loss, enhancing overall performance. The design incorporates several sound-dampening features as well, which contributes to quieter operation, allowing homeowners to enjoy a serene indoor environment.

The furnace also includes an advanced control system that integrates easily with smart home technology. This feature enables users to monitor and adjust their heating settings from anywhere using a smartphone app, creating added convenience and control over home heating.

Safety is another paramount aspect of the EL280UH. It includes an integrated flame sensor and pressure switch, ensuring reliable operation while minimizing risks associated with furnace malfunctions. The design adheres to stringent safety standards, providing users with peace of mind.

In summary, the Lennox EL280UH furnace stands out for its high efficiency, advanced features, and commitment to user safety. Its two-stage heating capability, quiet operation, and smart home integration make it an excellent choice for homeowners looking to enhance their heating system while being energy-conscious. The EL280UH embodies Lennox's dedication to quality and innovation, ensuring that comfort and efficiency go hand in hand.