this appliance is maintained. Proper maintenance is criti- cal for your safety and the satisfactory operation of the product. Lennox strongly recommends annual in- spection and maintenance of this appliance. Contact your Lennox dealer for an inspection by a licensed profes- sional service technician (or equivalent).

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.

Operating the Gas Valve (Figure 2)

1 − STOP! Read the safety information at the beginning of this section.

2 − Set the thermostat to the lowest setting.

3 − Turn off all electrical power to the unit.

4 − This furnace is equipped with an ignition device which automatically lights the burners. Do not try to light the burners by hand.

5 − Remove the upper access panel.

6 − Move switch on gas valve to OFF. See figure 2.

7 − Wait five minutes to clear out any gas. If you then smell gas, STOP! Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instruc- tions. If you do not smell gas go to next step.

8 − Move switch on gas valve to ON. See figure 2.

Do not attempt to bleed the gas lines of air. Call your local gas provider.

Start−Up & Operation Information

WARNING

If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or death.

MANIFOLD

PRESSURE

ADJUSTMENT

SCREW

INLET

 

PRESSURE

 

PORT

GAS VALVE SHOWN IN ON POSITION

 

MANIFOLD PRESSURE OUTLET PORT

BEFORE PLACING THE UNIT INTO OPERATION, smell all around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor.

The gas valve on the ML180UHE will be equipped with a gas control switch. Use only your hand to move the switch. Never use tools. If the switch will not move by hand, do not try to repair it. Call a licensed professional service technician (or equivalent). Force or attempted re- pair may result in a fire or explosion.

Placing the ML180UHE furnace into operation:

ML180UHE units are equipped with an ignition system. Do not attempt to manually light burners on this furnace. Each time the thermostat calls for heat, the burners will automatically light. The ignitor does not get hot when there is no call for heat on units with this ignition system.

FIGURE 2

9 − Replace the upper access panel.

10 − Turn on all electrical power to to the unit.

11 − Set the thermostat to desired setting.

NOTE − When unit is initially started, steps 1 through 11 may need to be repeated to purge air from gas line.

12 − If the appliance will not operate, follow the section urning Off Gas to the Unit" and call your licensed professional service technician (or equivalent).

Turning Off Gas to the Unit

1 − Set the thermostat to the lowest setting.

2 − Turn off all electrical power to the unit if service is to be performed.

3 − Remove the upper access panel.

4 − Move switch on gas valve OFF.

5 − Replace the upper access panel.

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Lennox International Inc Gas Furnace, ML180UHE manual Start−Up & Operation Information
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ML180UHE, Gas Furnace specifications

Lennox International Inc is well-known for its commitment to sustainability, innovation, and efficiency in the HVAC industry. One of their standout offerings is the EL195DFE Series gas furnace, designed to provide optimum heating performance while maintaining energy efficiency.

The EL195DFE Series gas furnace operates with an impressive Annual Fuel Utilization Efficiency (AFUE) rating of up to 95 percent. This means that 95 percent of the fuel consumed is converted into usable heat, ensuring lower energy bills and a reduced environmental footprint. The high-efficiency rating makes it an ideal choice for homeowners looking to upgrade their heating system without sacrificing comfort.

A notable feature of the EL195DFE Series is its two-stage heating capability. This technology allows the furnace to adjust its heating output based on the home’s requirements, operating at a lower capacity during milder conditions and ramping up its output during colder weather. This not only enhances comfort by reducing temperature fluctuations, but it also contributes to energy savings, as the system does not run at full capacity unnecessarily.

Additionally, the EL195DFE Series is equipped with a variable-speed blower motor. This feature ensures that air is distributed evenly throughout the home, reducing hot and cold spots. The variable speed operation also contributes to quieter operation, allowing for a more peaceful indoor environment.

One of the key characteristics of the EL195DFE Series is its robust construction and reliability. The furnace is built with high-quality materials, designed to withstand years of use while minimizing the likelihood of breakdowns. Furthermore, Lennox provides an extensive warranty for this product, giving homeowners peace of mind regarding their investment.

Designed with ease of installation and maintenance in mind, the EL195DFE Series gas furnace includes a user-friendly control board and an integrated condensing design, which simplifies maintenance while providing efficient condensate management.

In summary, the Lennox EL195DFE Series gas furnace exemplifies advanced engineering and technology in home heating solutions. With its high AFUE rating, two-stage heating, variable-speed blower motor, and durable construction, it stands out as an energy-efficient option that promises comfort, reliability, and reduced energy costs for homeowners looking for an upgrade to their heating systems. Lennox continues to lead the market in HVAC innovations, making their products a sought-after choice for conscientious consumers.
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