Lennox International Inc. Gas Furnace manual

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Table of contents for the manual

  • Page 1

    07/10 *2P0710* 506465−01 *P506465-01* ML193UH SERIES Litho U.S.A. 506465−01 07/2010 E 2010 Lennox Industries Inc. Dallas, T exas, USA WHA T TO 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. Inst allation and service must be performed by a qualified inst a[...]

  • Page 2

    Page 2 ML193UH Part s Identification FIGURE 1 DURALOK TM HEA T EXCHANGER ASSEMBL Y BURNERS BLOWER MOTOR GAS V AL VE AND MANIFOLD COMBUSTION AIR INDUCER FLUE COLLAR TOP CAP INTEGRA TED CONTROL PRESSURE SWITCH ASSEMBL Y AIR INT AKE COLLAR BLOWER ACCESS P ANEL UPPER ACCESS P ANEL NOTE − This manual is the property of the homeowner and must be left w[...]

  • Page 3

    Page 3 W ARNING Product contains fiberglass wool. Disturbing the insulation in this product during inst allation, maintenance, or rep air will expose you to fiberglass wool. Breathing this may cause lung cancer . (Fiberglass wool is known to the S t ate of Cal- ifornia to cause cancer .) Fiberglass wool may also cause respiratory , skin, and eye ir[...]

  • Page 4

    Page 4 Y our furnace is a gas appliance. It is critical that the gas supplied to the unit be completely burned to avoid the pro- duction of carbon monoxide gas. Complete combustion of the gas requires, but is not limited to, correct gas pressure and gas flow rate, adequate combustion, air , and proper venting. W ARNING Carbon monoxide gas is invisi[...]

  • Page 5

    Page 5 Filters All ML193UH filters are installed external to the unit. Fil - ters s hould be i nspected m onthly . Clean o r r eplace the f il- ters when necessary to e nsure proper furnace o peration. Replacement f ilters m ust b e r ated for high v elocity a irflow . T able 1 lists recommended filter sizes. A filter must be in place when the unit[...]

  • 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 Rep air Part s List The following repair parts are available through Lennox dealers. When ordering parts, include the complete furnace model number listed on the CSA International nameplate −− Example: ML193UH045P36B. All service must be done by a li- censed professional inst aller (or equivalent), a service agency , or the gas supplier [...]