Instruction/ maintenance manual of the product G43UF Lennox International Inc.
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02/04 *2P0204* 504,898M *P504898M* G43UF SERIES Litho U.S.A. 504,898M 02/04 E 2004 Lennox Industries Inc. Dallas, T exas, USA GAS FURNACE 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.
Page 2 G43UF Parts Identification DURALOK TM HEA T EXCHANGER ASSEMBL Y UPPER ACCESS P ANEL BURNERS BLOWER MOTOR CABINET CONTROL BOX GAS V AL VE AND MANIFOLD COMBUSTION AIR PROVING (PRESSURE) SWITCH COMBUSTION AIR INDUCER BLOWER ACCESS P ANEL FLUE COLLAR TOP CAP INTEGRA TED CONTROL BOARD FIGURE 1 W ARNING Product contains fiberglass wool.
Page 3 W ARNING Do not use this furnace if any part has been under - water . A flood−damaged furnace is extremely dan - gerous. Attempts to use the furnace can result in fire or explosion.
Page 4 The g as v alve on t he G 43UF m ay b e equipped w ith either a gas control knob or gas control lever . Use only your hand t o p ush t he lever o r t urn the g as c ontrol knob. N ever use t ools. If t he the lever will not m ove or the knob w ill not push i n o r t urn b y h and, d o not try to r epair i t.
Page 5 T ABLE 1 Furnace Filter Size Furnace Cabinet Size Side Return Bottom Return 17−1/2" 16 X 25 X 1 (1) 16 X 25 X 1 (1) 21" 16 X 25 X 1 (1) 20 X 25 X 1 (1) 24−1/2" 16 X 25 X 1 (2) 24 X 25 X 1 (1) Maintenance A qualified service technician should inspect the complete system each season (heating and cooling).
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.
Page 7 Repair Parts 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: G43UF−24B−045−2.
An important point after buying a device Lennox International Inc. G43UF (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Lennox International Inc. G43UF yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Lennox International Inc. G43UF - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Lennox International Inc. G43UF you will learn all the available features of the product, as well as information on its operation. The information that you get Lennox International Inc. G43UF will certainly help you make a decision on the purchase.
If you already are a holder of Lennox International Inc. G43UF, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Lennox International Inc. G43UF.
However, one of the most important roles played by the user manual is to help in solving problems with Lennox International Inc. G43UF. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Lennox International Inc. G43UF along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
