Lennox International Inc EL180UHE Use of Furnace as Construction Heater, General

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Installed in Combination with a Cooling Coil

When this furnace is used with cooling units, it shall be installed in parallel with, or on the upstream side of, cooling units to avoid condensation in the heating compartment. See figure 1. With a parallel flow arrangement, a damper (or other means to control the flow of air) must adequately pre­ vent chilled air from entering the furnace. If the damper is manually operated, it must be equipped to prevent operation of either the heating or the cooling unit, unless it is in the full HEAT or COOL setting. See figure 1.

Heating Unit Installed Parallel to Cooling Coil

Dampers

(open during heating operation only)

Gas Unit

Cooling Coil

Dampers

(open during cooling operation only)

Heating Unit Installed Upstream of Cooling Coil

Gas Unit

Cooling Coil

FIGURE 1

When installed, this furnace must be electrically grounded according to local codes. In addition, in the United States, installation must conform with the current National Elec­ tric Code, ANSI/NFPA No. 70. The National Electric Code (ANSI/NFPA No. 70) is available from the following ad­ dress:

National Fire Protection Association

1 Battery March Park

Quincy, MA 02269

NOTE - This furnace is designed for a minimum continu­ ous return air temperature of 60°F (16°C) or an intermit­ tent operation down to 55°F (13°C) dry bulb for cases where a night setback thermostat is used. Return air tem­ perature must not exceed 85°F (29°C) dry bulb.

The EL180UHE furnace may be installed in alcoves, clos­ ets, attics, basements, garages, crawl spaces and utility rooms in the upflow or horizontal position.

This furnace design has not been CSA International certified for installation in mobile homes, recreational

vehicles, or outdoors.

Use of Furnace as Construction Heater

Lennox does not recommend the use of EL180UHE units as a construction heater during any phase of construction. Very low return air temperatures, harmful vapors and op­ eration of the unit with clogged or misplaced filters will dam­ age the unit.

EL180UHE units may be used for heating of buildings or structures under construction, if the following conditions are met:

D The vent system must be permanently installed per these installation instructions.

DA room thermostat must control the furnace. The use of fixed jumpers that will provide continuous heating is not allowed.

DThe return air duct must be provided and sealed to the furnace.

DReturn air temperature range between 60°F (16°C) and 80°F (27°C) must be maintained.

DAir filters must be installed in the system and must be maintained during construction.

DAir filters must be replaced upon construction comple­ tion.

DThe input rate and temperature rise must be set per the furnace rating plate.

DOne hundred percent (100%) outdoor air must be pro­ vided for combustion air requirements during construc­ tion. Temporary ducting may supply outdoor air to the furnace. Do not connect duct directly to the furnace. Size the temporary duct following these instructions in section for Combustion, Dilution and Ventilation Air in a confined space with air from outside.

DThe furnace heat exchanger, components, duct system, air filters and evaporator coils must be thoroughly cleaned following final construction clean-up.

DAll furnace operating conditions (including ignition, in­ put rate, temperature rise and venting) must be verified according to these installation instructions.

General

These instructions are intended as a general guide and do not supersede local codes in any way. Consult authorities having jurisdiction before installation.

In addition to the requirements outlined previously, the fol­ lowing general recommendations must be considered when installing a EL180UHE furnace:

DPlace the furnace as close to the center of the air dis­ tribution system as possible. The furnace should also be located close to the chimney or vent termination point.

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Contents Installation Instructions EL180UHE Table of ContentsUnit Dimensions inches mm OpeningEL180UHE Gas Furnace Safety InformationShipping and Packing List Use of Furnace as Construction Heater Installed in Combination with a Cooling CoilGeneral Combustion, Dilution & Ventilation Air Unconfined SpaceAir from Inside Confined SpaceAir from Outside Equipment in Confined Space Setting Equipment Upflow ApplicationsWith transition and filter Return Air -- Upflow ApplicationsSingle Side Return Air Horizontal Applications Removing the Bottom PanelReturn Air -- Horizontal Applications Horizontal Application Unit Installed on Platform FiltersDuct System Supply Air PlenumVenting Return Air PlenumMounting Screws Location Upflow PositionHorizontal Left Position Left Side Vent DischargeRight Side Vent Discharge Side Vent DischargeHorizontal Right Position Venting Using a Masonry ChimneySide Vent Discharge no modifications necessary Common Venting Using Metal-Lined Masonry Chimney Vent Connection Upflow and Horizontal PositionConnector Length feet m Connector Diameter Maximum HorizontalGeneral Venting Requirements Page MIN FAN + FAN FAN + NAT Removal of the Furnace from Common Vent Gas PipingGas Supply Gas Pipe Capacity ft3/hr m3/hr 103.92 97.69 92.31Horizontal Applications Possible Gas Piping Configurations Precautions and ProceduresElectrical Leak CheckInterior MAKE-UP BOX Installation Accessory TerminalsGenerator Use Voltage Requirements ThermostatEL180UHE Schematic Wiring Diagram Diagnostic Codes / Status of Furnace Integrated ControlIntegrated Control Automatic Hot Surface Ignition SystemFor Your Safety Read Before Lighting Unit Start-UpGas Pressure Adjustment GAS Meter Clocking ChartProper Combustion High AltitudeOther Unit Adjustments Service Repair Parts List ML180UHE Burner Assembly & RemovalControl Panel Parts Blower PartsStart-Up & Performance Check List Cooling Mode Temperature DropTemperature Rise Unit Operation

EL180UHE specifications

Lennox International Inc. has long been a leader in providing innovative heating and cooling solutions, and the EL180UHE represents a notable advancement in their line of high-efficiency gas furnaces. Designed to meet the demands of residential heating, this unit combines advanced technology with user-friendly operation and significant energy savings.

One of the standout features of the EL180UHE is its efficiency rating, with an Annual Fuel Utilization Efficiency (AFUE) of up to 80%. This high efficiency not only helps homeowners save on energy bills but also reduces their carbon footprint. The furnace is equipped with a reliable, multi-speed blower motor, which enhances comfort levels by maintaining consistent air circulation throughout the home.

The EL180UHE employs advanced combustion technologies, such as Lennox's low-NOx burner, which minimizes nitrogen oxide emissions, contributing to a cleaner environment. The unit is also designed with a sealed combustion system that draws air directly from the outdoors rather than from inside the home, leading to improved indoor air quality and increased safety.

Another significant characteristic of the EL180UHE is its whisper-quiet operation. This is achieved through well-engineered insulation and a design that minimizes noise levels, allowing for a comfortable living environment without disruptive sounds. Many homeowners appreciate the quiet performance, especially during the night or in spaces where noise is a concern.

The installation process is straightforward, supported by Lennox's user-friendly design. The EL180UHE is compatible with various home configurations and can easily integrate with existing HVAC systems. Additionally, it has a compact footprint, making it suitable for homes with space constraints.

Further enhancing its appeal, this gas furnace features robust warranty options, reflecting Lennox's commitment to quality and customer satisfaction. Homeowners can rest assured that they are investing in a durable product that has been built to last.

In conclusion, Lennox International Inc.'s EL180UHE gas furnace exemplifies the company's dedication to innovation, efficiency, and reliability in home heating solutions. With its high AFUE rating, advanced combustion technology, quiet operation, and user-friendly design, the EL180UHE is an excellent choice for homeowners looking to enhance their comfort while minimizing energy costs.
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