Lennox International Inc Comprehensive Guide to the EL280UH Gas Furnace by Lennox
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EL280UH Gas Furnace

The EL280UH unit is shipped ready for installation in the

upflow or horizontal right position (for horizontal left posi- tion the combustion air pressure switch must be moved). The furnace is shipped with the bottom panel in place. The bottom panel must be removed if the unit is to be installed

in a horizontal application. The panel may also be re- moved in upflow applications.

Shipping and Packing List

Package 1 of 1 contains

1 − Assembled EL280UH unit

1 − Bag assembly containing the following:

2 − Screws

1− Snap bushing

1− Snap plug

1− Wire tie

1− Vent warning label

1− Owner’s manual and warranty card

The following items may be ordered separately:

1 − Thermostat

1 − Suspension kit (for horizontal installations)

1 − Propane/LP changeover kit

1 − Return air base

1 − High altitude kit

1 − Side filter kit

Check equipment for shipping damage. If you find any damage, immediately contact the last carrier.

Safety Information

DANGER

Danger of explosion.

There are circumstances in which odorant used with LP/propane gas can lose its scent. In case of a leak, LP/propane gas will settle close to the floor and may be difficult to smell. An LP/propane leak detector should be installed in all LP applications.

WARNING

Improper installation, adjustment, alteration, service or maintenance can cause property damage, person- al injury or loss of life. Installation and service must be performed by a licensed professional installer (or equivalent), service agency or the gas supplier.

CAUTION

As with any mechanical equipment, personal injury can result from contact with sharp sheet metal edges. Be careful when you handle this equipment.

Certifications

EL280UH units are CSA International certified to ANSI Z21.47.

In the USA, installation of gas furnaces must conform with local building codes. In the absence of local codes, units must be installed according to the current National Fuel Gas Code (ANSI-Z223.1). The National Fuel Gas Code is

available from the following address: American National Standards Institute, Inc. 11 West 42nd Street

New York, NY 10036

Clearances

Adequate clearance must be made around the air open- ings into the vestibule area. In order to ensure proper unit operation, combustion and ventilation air supply must be provided according to the current National Fuel Gas Code.

Vent installations must be consistent with the venting tables (in this instruction) and applicable provisions of local building codes.

This furnace is CSA International certified for installation clearances to combustible material as listed on the unit nameplate and in the tables in figures 8 and 12. Accessibility and service clearances must take precedence over fire protection clearances.

NOTE − For installation on combustible floors, the furnace

shall not be installed directly on carpeting, tile, or other

combustible material other than wood flooring.

Installed Locations

For installation in a residential garage, the furnace must be installed so that the burner(s) and the ignition source

are located no less than 18 inches (457 mm) above the

floor. The furnace must be located or protected to avoid physical damage by vehicles. When a furnace is installed

in a public garage, hangar, or other building that has a haz-

ardous atmosphere, the furnace must be installed accord- ing to recommended good practice requirements and cur-

rent National Fuel Gas Code.

Temperature Rise

NOTE − Furnace must be adjusted to obtain a temperature rise within the range specified on the unit nameplate. Failure to do so may cause erratic limit operation and may result in premature heat exchanger failure.

This EL280UH furnace must be installed so that its electri- cal components are protected from water.

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Contents Installation Instructions EL280UH Table of ContentsUnit Dimensions − inches mm Supply AIR OpeningParts Arrangement EL280UH Gas Furnace Safety InformationShipping and Packing List 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 Electrical Interior MAKE−UP BOX InstallationElectrostatic Discharge ESD 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−UpProper Combustion Gas Pressure AdjustmentHigh Altitude 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 ListFlash Code Status / Error Description Integrated Control Diagnostic CodesLED 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 Cooling Mode Temperature RiseUnit Operation Drain Line
Related manuals
Manual 7 pages 50.25 Kb

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.
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