Instruction/ maintenance manual of the product G43UF Lennox Hearth
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G A S F U R N A C E S G43UF MERIT ® SERIES Up−Flow E N G I N E E R I N G D A T A Bulletin No. 210394 August 2005 Supersedes December 2004 AFUE − up to 92.
G43UF / Page 2 FEA TURES CONTENTS Blower Data Pages 13−15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dimensions Pages 9−12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Exhaust Pipe V enting Information Page 7 .
G43UF / Page 3 FEA TURES HEA TING SYSTEM Lennox Duralok Plus ® Heat Exchanger Assembly Lennox developed heat exchanger assembly consists of primary heat exchanger and secondary condenser coil assembly . Main 3-pass clamshell type heat exchanger constructed of heavy−gauge, aluminized steel.
G43UF / Page 4 FEA TURES FIL TER (NOT FURNISHED) Filter and provisions for external mounting must be field provided. OPTIONS Air Filter and Rack Kit for Side Return Air Applications (Not for use with RAB Return Air Base) W ashable or vacuum cleanable polyurethane frame type filter and external side return air rack available for field installation.
G43UF / Page 5 SPECIFICA TIONS Gas Heating Performance ModelNo. G43UF −24B−045 G43UF −24B−070 G43UF −36B−070 G43UF −36C−090 G43UF −36C−090H Canada Only Input− Btuh (kW) 44,000 (12.9) 66,000 (19.3) 66,000 (19.3) 88,000 (25.8) 88,000 (25.
G43UF / Page 6 OPTIONAL ACCESSORIES − MUST BE ORDERED EXTR A B" Width Models C" Wid th Models D" Width Models FIL TER KITS 1 Air Filter and Rack Kit Horizontal (end) Size of filter − in.
G43UF / Page 7 EXHAUS T PIPE VENTING T ABLE 1 Maximum Equivalent V ent Length − One or T wo Pipe Applications Altitude V ent Size (diameter) G43UF−24B−045 G43UF−24B−070 G43UF−36B−070 G43UF−36C−090 G43UF−48C−090 2 G43UF−48C−1 10 2 G43UF−60C−1 10 3 G43UF−60D−135 () ft.
G43UF / Page 8 FIL TER AIR RESIS T ANCE For 1 Inch (25 mm) Cleanable Filter (Field Provided) cfm L/s in. w .g. Pa 0 0 0.00 0 200 95 0.01 0 400 190 0.03 5 600 285 0.04 10 800 380 0.06 15 1000 470 0.09 20 1200 565 0.12 30 1400 660 0.15 35 1600 755 0.19 45 1800 850 0.
G43UF / Page 9 DIMENSIONS − INCHES (MM) 1 Bottom Return Air Opening 1 Bottom Return Air Opening ELECTRICAL INLET (Either Side) SUPPL Y AIR OPENING AIR FLOW FRONT VIEW SIDE VIEW TOP VIEW A B 9/16 (14.
40 (1016) A UP−FLOW POSITION B G43UF / Page 10 OPTIONAL ACCESSORY DIMENSIONS − INCHES (MM) 1 Both the unit return air opening and the base return air opening must be covered by a single plenum or IAQ cabinet. Minimum unit side return air opening dimensions for units requiring 1800 cfm or more of air (W x H): 23 x 1 1 in.
G43UF / Page 1 1 OPTIONAL ACCESSORY DIMENSIONS − INCHES (MM) 37 (940) 3 (76) 71M80 1−1/2 inch (38 mm) 69M29 2 inch (51 mm) See Inst allation Instructions for specific usage. CONCENTRIC W ALL TERMINA TION APPLICA TIONS CLAMP (Furnished) 2 x 1-1/2 in.
G43UF / Page 12 OPTIONAL ACCESSORY DIMENSIONS − INCHES (MM) 5 (127) 5-1/2 (140) 12 (305) Minimum ABOVE GRADE INT AKE AIR EXHAUST AIR GRADE EXHAUST AIR INT AKE AIR INSULA TION (Not Furnished) If Intake and Exhaust Pipe is less than 12 in. (305 mm) above snow accumula- tion or other obstructions, field fabri- cated piping must be installed.
G43UF / Page 13 BLOWER/W A TTS DA T A G43UF−24B−045 PERFORMANCE (Less Filter) External St atic Air V olume / Watt s at Different Blower Speeds External St atic Pressure High Medium−High Medium−Low Low in. w .g. Pa cfm L/s W atts cfm L/s Watt s cfm L/s W atts cfm L/s Watt s 0.
G43UF / Page 14 BLOWER/W A TTS DA T A G43UF−48C−090 PERFORMANCE (Less Filter) External St atic Air V olume / Watt s at Different Blower Speeds External St atic Pressure High Medium−High Medium−Low Low in. w .g. Pa cfm L/s W atts cfm L/s Watt s cfm L/s W atts cfm L/s Watt s 0.
G43UF / Page 15 BLOWER/W A TTS DA T A G43UF−60D−135 PERFORMANCE (Less Filter) − Single Side Return Air − Air volumes in bold require field fabricated transi- tion to accommodate 20 x 25 x 1 in. (508 x 635 x 25 mm) air filter in order to maintain proper air velocity .
Visit us at www .lennox.com For the latest technical information, www .lennoxdavenet.com Contact us at 1−800−4−LENNOX NOTE − Due to Lennox’ ongoing committment to quality , S pecifications, Ratings and Dimensions subject to change without notice a nd without incurring liability .
An important point after buying a device Lennox Hearth 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 Hearth 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 Hearth G43UF - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Lennox Hearth G43UF you will learn all the available features of the product, as well as information on its operation. The information that you get Lennox Hearth G43UF will certainly help you make a decision on the purchase.
If you already are a holder of Lennox Hearth 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 Hearth G43UF.
However, one of the most important roles played by the user manual is to help in solving problems with Lennox Hearth G43UF. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Lennox Hearth 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
