Lennox Hearth G43UF User Manual

G A S F U R N A C E SG43UFMERIT® SERIESUp−FlowE N G I N E E R I N G D A T A Bulletin No. 210394August 2005Supersedes December 2004AFUE − up to 92.1%

40(1016)AUP−FLOW POSITIONBG43UF / Page 10OPTIONAL ACCESSORY DIMENSIONS − INCHES (MM)1Both the unit return air opening and the base return air opening

G43UF / Page 11OPTIONAL ACCESSORY DIMENSIONS − INCHES (MM)37(940)3 (76)71M80  1−1/2 inch (38 mm)69M29  2 inch (51 mm)See Installation Instructions f

G43UF / Page 12OPTIONAL ACCESSORY DIMENSIONS − INCHES (MM) 5 (127)5-1/2(140)12 (305)MinimumABOVE GRADEINTAKEAIREXHAUSTAIRGRADEEXHAUSTAIRINTAKEAIRINSUL

G43UF / Page 13BLOWER/WATTS DATA G43UF−24B−045 PERFORMANCE (Less Filter)External StaticAir Volume / Watts at Different Blower SpeedsExternal StaticPre

G43UF / Page 14BLOWER/WATTS DATAG43UF−48C−090 PERFORMANCE (Less Filter)External StaticAir Volume / Watts at Different Blower SpeedsExternal StaticPres

G43UF / Page 15BLOWER/WATTS DATA G43UF−60D−135 PERFORMANCE (Less Filter) − Single Side Return Air − Air volumes in bold require field fabricated trans

Visit us at www.lennox.comFor the latest technical information, www.lennoxdavenet.comContact us at 1−800−4−LENNOXNOTE − Due to Lennox’ ongoing committ

G43UF / Page 2FEATURES CONTENTSBlower Data Pages 13−15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dimensions Pages 9−12. . . . . .

G43UF / Page 3FEATURESHEATING SYSTEMLennox Duralok Plus® Heat Exchanger AssemblyLennox developed heat exchanger assembly consists of primaryheat excha

G43UF / Page 4FEATURES FILTER (NOT FURNISHED)Filter and provisions for external mounting must be fieldprovided.OPTIONSAir Filter and Rack Kit for Side

G43UF / Page 5SPECIFICATIONS GasHeatingPerformanceModelNo. G43UF−24B−045G43UF−24B−070G43UF−36B−070G43UF−36C−090G43UF−36C−090HCanada OnlyInput− Btuh

G43UF / Page 6OPTIONAL ACCESSORIES − MUST BE ORDERED EXTRA B" Width Models C" Width Models D" Width ModelsFILTER KITS1 Air Filter a

G43UF / Page 7EXHAUST PIPE VENTING TABLE 1 Maximum Equivalent Vent Length − One or Two Pipe ApplicationsAltitudeVent Size(diameter)G43UF−24B−045G43UF−

G43UF / Page 8FILTER AIR RESISTANCE For 1 Inch (25 mm) Cleanable Filter (Field Provided)cfm L/s in. w.g.Pa00 0.00 0200 95 0.01 0400 190 0.035600285 0.

G43UF / Page 9DIMENSIONS − INCHES (MM) 1 Bottom ReturnAir Opening1 Bottom ReturnAir OpeningELECTRICAL INLET(Either Side)SUPPLY AIROPENINGAIR FLOWFRONT