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Lennox ML180UHEK Series User's Information Manual
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Lennox ML180UHEK Series User's Information Manual

Lennox ML180UHEK Series User's Information Manual

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2024 Lennox Industries Inc.
©
Dallas, Texas, USA
508542-01
11/2024
Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any
other appliance.
Installation and service must be performed
by a qualified installer, service agency or the
gas supplier.
WARNING
Improper
installation,
service or maintenance can cause property damage,
personal injury or loss of life. Installation and service
must
be performed by a licensed professional
HVAC installer or equivalent, service agency, or the
gas supplier.
FIRE OR EXPLOSION HAZARD.
Failure to follow safety warnings exactly
could result in serious injury, death, or
property damage.
USER'S INFORMATION
WARNING
This furnace is equipped with an ignition control
factory enabled for use with Lennox A2L refrigerant
systems.
Disabling
functionality on A2L system is prohibited by safety
codes. Refer to furnace installation instructions for
non-A2L and non-Lennox refrigerant system setup.
adjustment,
alteration,
WARNING
WHAT TO DO IF YOU SMELL GAS:
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any
phone in your building.
• Leave the building immediately
• Immediately call your gas supplier from a neighbor's
phone. Follow the gas supplier's instructions.
• If you cannot reach your gas supplier, call the fire
department.
MANUAL
ML180UHEK
SERIES
GAS FURNACE
the
refrigerant
detection

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Summary of Contents for Lennox ML180UHEK Series

  • Page 1 SERIES 508542-01 11/2024 GAS FURNACE WARNING This furnace is equipped with an ignition control factory enabled for use with Lennox A2L refrigerant systems. Disabling refrigerant detection functionality on A2L system is prohibited by safety codes. Refer to furnace installation instructions for non-A2L and non-Lennox refrigerant system setup.
  • Page 2 ML180UHEK Parts Identification TOP CAP HEAT EXCHANGER ASSEMBLY PRESSURE SWITCH COMBUSTION AIR INDUCER UPPER ACCESS PANEL GAS VALVE AND MANIFOLD BURNERS INDOOR BLOWER MOTOR LOW GWP INTEGRATED BLOWER ACCESS CONTROL PANEL FIGURE 1 NOTE - This manual is the property of the homeowner and must be left with the equipment user. CAUTION Notice to Homeowner This furnace is equipped with safety devices that protect...
  • Page 3 These products can cause furnace corrosion. fireplaces) has the potential to produce carbon monoxide gas. Because of this, Lennox recommends the use of 4 - DO NOT draw return air from a room where this a carbon monoxide detector in your home, even if furnace, or any other gas appliance (ie., a water...
  • Page 4 Start-Up & Operation Information MANIFOLD MANIFOLD PRESSURE PRESSURE WARNING ADJUSTMENT OUTLET SCREW PORT If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or death. INLET BEFORE LIGHTING smell all around the appliance area PRESSURE PORT for gas.
  • Page 5 WARNING Service Reminder ELECTRICAL SHOCK, FIRE, Call your Lennox service technician if the unit will not op- OR EXPLOSION HAZARD. erate. Before calling, always check the following to be sure service is required. Failure to follow safety warnings exactly could result in dangerous operation, serious injury, death 1 - Check that electrical disconnect switches are ON.
  • Page 6 5 - Check the cleanliness of filters and change if If you discover any of the following, shut down your necessary (monthly). unit, and contact a Lennox dealer for an inspection by 6 - Check the condition and cleanliness of burners and a licensed professional service technician (or equiv- heat exchanger and clean if necessary.
  • Page 7 Repair Parts List The following repair parts are available through Lennox dealers. When ordering parts, include the complete furnace mod- el number listed on the CSA International nameplate -- Example: ML180UHE04536AK. All service must be done by a licensed professional installer (or equivalent), a service agency, or the gas supplier.