1987MAEVOLUTIONR MODULATING4--WAY MULTIPOSE, VARIABLE SPEEDCONDENSING GAS FURNACE, SERIES AProduct DataA11264The 987MA Multipoise Variable--Speed Cond
10RETURN AIR TEMPERATUREThis furnace is designed for continuous return--air minimum temperature of 60_F(15_C) db or intermittent operation down to 55_
11DOWNFLOW SUBBASEA97427AssembledA88207DisassembledLOCATINGTABLOCATINGTAB12344321BDCA11/4″ TYPPLENUMOPENINGFACTORY-SUPPLIEDFIELD-INSTALLEDINSULATIONDI
12MEDIA FILTER CABINETFurnace SideCenterline Screw Slots23-3/4”23-3/8”23-5/8"534Duct SideOpeningOpening with Flanges Bent24-1/4”25-5/8"B Ope
13DIMENSIONAL DRAWING987MAA11449NOTE: Doors may vary by model.a. For 800 CFM--- 16--- i n. (406 mm) round or 14 1/ 2 x 12---in. (368 x 305 mm) rectang
14GUIDE SPECIFICATIONSGeneralSystem DescriptionFurnish a ______________________ 4--way multipoise gas--firedcondensing furnace for use with natural ga
2SPECIFICATIONSHeating Capacity and Efficiency 042060 042080 060100 066120InputMaximum Heat (BTUH) 60,000 80,000 100,000 120,000Intermediate Heat (BTU
3MODEL NUMBER NOMENCLATURE987MA42060V17A--AS - Single StageT - Two StageM - Modulating0 --- 90 AFUE3 --- 93 AFUE5 --- 95 AFUE6 --- 96 AFUE7 --- 97 AFU
4ACCESSORIESDESCRIPTION PART NUMBER 042060 042080 060100 066120Venting, Drainage and InstallationVent Kit - Through the Cabinet KGADC0101BVC X X X XVe
5AIR DELIVERY -- CFM (BOTTOM RETURN WITH FILTER)(SW1-5 and SW4-3 set to OFF, except as indicated. See Notes 1 and 2.)INPUTBTUHCooling Switch Settings
6AIR DELIVERY -- CFM (BOTTOM RETURN WITH FILTER) (CONTINUED)(SW1-5 and SW4-3 set to OFF, except as indicated. See Notes 1 and 2.)INPUTBTUHCooling Swit
7MAXIMUM EQUIVALENT VENT LENGTH -- FT. (M)NOTE: Maximum Equivalent Vent Length (MEVL) does NOT include elbows or terminations. Use Table 2 - Deduction
8MAXIMUM EQUIVALENT VENT LENGTH -- FT. (M)NOTE: Maximum Equivalent Vent Length (MEVL) does NOT include elbows or terminations. Use Table 2 - Deduction
9MAXIMUM ALLOWABLE EXPOSED VENT PIPE LENGTH INSULATION TABLE -- FT. / MMaximum Length of Uninsulated and Insulated Vent Pipe-Ft (M)ModulatingFurnaceHi
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