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Lennox International Inc. GAS FURNACE manual

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Table of contents for the manual

  • Page 1

    05/1 1 *2P0511* 506733−01 *P506733-01* ML180UHE SERIES Litho U.S.A. 506733−01 05/201 1 E 201 1 Lennox Industries Inc. Dallas, T exas, USA WHA T T O DO IF YOU SMELL GAS: Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other ap- pliance. Installation and service must be performed by a qualified in[...]

  • Page 2

    Page 2 ML180UHE Part s Identification FIGURE 1 HEA T EXCHANGER ASSEMBL Y BURNERS BLOWER MOTOR GAS V AL VE AND MANIFOLD COMBUSTION AIR INDUCER TOP CAP INTEGRA TED CONTROL PRESSURE SWITCH BLOWER ACCESS P ANEL UPPER ACCESS P ANEL NOTE − This manual is the property of the homeowner and must be left with the equipment user . Notice to Homeowner This f[...]

  • Page 3

    Page 3 CAUTION Before attempting to pe rform any service or mainte- nance, turn the electrical power to unit OFF at the disconnect switch. W ARNING Do not set thermost at below 60°F (16°C) in heating mode. Setting thermost at below 60°F (16°C) reduces the number of heating cycles. Damage to the unit may occur that is not covered by the warranty[...]

  • Page 4

    Page 4 this a ppliance is maintained. Proper maintenance is c riti- cal for your safety and the satisfactory operation of the product. Lennox strongly recommends annual in- spection and maintenance of this appliance. Contact your L ennox d ealer f or a n i nspection b y a licensed profes - sional service technician (or equivalent). DANGER Danger of[...]

  • Page 5

    Page 5 Filters All M L180UHE filters a re i nstalled e xternal t o the unit. Fil- ters s hould b e inspected monthly . C lean o r r eplace t he f il- ters w hen n ecessary t o e nsure p roper furnace operation. Replacement f ilters m ust be rated for high velocity airflow . T able 1 lists recommended filter sizes. A filter must be in place when the[...]

  • Page 6

    Page 6 Service Reminder Call your Lennox service technician if the unit will not oper- ate. Before calling, always check the following to be sure service is required: 1 − Check that electrical disconnect switches are ON. 2 − Check room thermostat for proper setting. 3 − Replace any blown fuses or reset circuit breakers. 4 − Gas valve should[...]

  • Page 7

    Page 7 Repair Part s List The following repair p ar ts are available through Lennox dealers. When ordering parts, include the complete furnace model number listed on the CSA International nameplate −− Example: ML180UHE045P36A. All service must be done by a li- censed professional installer (or equivalent), a service agency , or the gas supplier[...]