Lennox International Inc EL180UHE installation instructions Other Unit Adjustments

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TABLE 10

Manifold Pressure Settings at all Altitudes

Model

Gas

0-2000 ft

2001-4500 ft.

4501-7500 ft

7501 - 10,000 ft

Line Pressure in.wg.

 

 

Input Size

 

 

 

 

 

Min

Max

 

 

 

 

 

 

 

 

 

 

 

 

 

 

045

Nat

3.5

3.2

3.0

3.5

4.5

13.0

 

 

 

 

 

 

 

LP/propane

10.0

10.0

10.0

10.0

11.0

13.0

 

 

 

 

 

 

 

 

 

070

Nat

3.5

3.2

2.8

3.5

4.5

13.0

 

 

 

 

 

 

 

LP/propane

10.0

10.0

10.0

10.0

11.0

13.0

 

 

 

 

 

 

 

 

 

090

Nat

3.5

3.2

2.7

3.5

4.5

13.0

 

 

 

 

 

 

 

LP/propane

10.0

10

9.6

10.0

11.0

13.0

 

 

 

 

 

 

 

 

 

110

Nat

3.5

3.5

3.0

3.5

4.5

13.0

 

 

 

 

 

 

 

LP/propane

10.0

10.0

9.6

10.0

11.0

13.0

 

 

 

 

 

 

 

 

 

135

Nat

3.5

3.5

2.9

3.5

4.5

13.0

 

 

 

 

 

 

 

LP/propane

10.0

10.0

9.6

10.0

11.0

13.0

 

 

 

 

 

 

 

 

 

TABLE 11

Pressure Switch and Gas Conversion Kits at all Altitudes

 

 

 

 

High Altitude

Natural Gas to LP/Propane

LP/Propane to

Model

High Altitude Pressure Switch Kit

Natural Gas Burner

Natural Gas Burner

Burner Orifice Kit

 

 

 

Orifice Kit

Orifice Kit

Input Size

 

 

 

 

 

 

 

 

 

 

 

 

 

0-4500 ft

4501-7500 ft

7501 - 10,000 ft

7501 - 10,000 ft

0 - 7500 ft

7501 - 10,000 ft

0 - 7500 ft

 

 

 

 

 

 

 

 

045

 

80W52

80W51

 

 

 

 

 

 

 

 

 

 

 

 

070

 

80W52

80W51

 

 

 

 

 

 

 

 

 

 

 

 

090

No Change

80W52

80W51

73W37

70W89

76W15

73W81

 

 

 

 

 

 

 

 

110

 

80W57

80W52

 

 

 

 

 

 

 

 

 

 

 

 

135

 

80W52

80W51

 

 

 

 

 

 

 

 

 

 

 

 

NOTE - A natural to L.P. propane gas changeover kit is necessary to convert this unit. Refer to the changeover kit installation instruction for the conversion procedure.

Other Unit Adjustments

Primary and Secondary Limits

The primary limit is located on the heating compartment vestibule panel. The secondary limits (if equipped) are lo­ cated in the blower compartment, attached to the back side of the blower. These auto reset limits are factory-set and re­ quire no adjustment.

Flame Rollout Switches

These manually reset switches are located on the burner box.

Pressure Switch

The pressure switch is located in the heating compartment adjacent to the combustion air inducer. The switch checks for proper combustion air inducer operation before allow­ ing ignition trial. The switch is factory-set and requires no adjustment.

Temperature Rise

After the furnace has been started, and supply and return

air temperatures have been allowed to stabilize, check the temperature rise. If necessary, adjust the blower speed to maintain the temperature rise within the range shown on the unit nameplate. Increase the blower speed to decrease the temperature. Decrease the blower speed to increase the temperature rise. Failure to adjust the temperature rise may cause erratic limit operation.

Fan Control

The heat fan-on time of 30 seconds is not adjustable. The heat fan-off delay (amount of time that the blower operates after the heat demand has been satisfied) may be adjusted by changing the jumper position across the five pins on the integrated control. The unit is shipped with a factory fan-off delay setting of 90 seconds. The fan-off delay affects com­ fort and is adjustable to satisfy individual applications. Ad­ just the fan-off delay to achieve a supply air temperature between 90° and 110°F at the moment that the blower is de-energized. Longer off delay settings provide lower re­ turn air temperatures; shorter settings provide higher re­ turn air temperatures. See figure 32.

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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.