Carrier 58MCB Nstallation, Start-up, And Operating Instructions

Also see for 58MCB: User's information manual Service and maintenance instructions Owner's manual Service and maintenance instruction Installation, start-up, and operating instructions

Carrier 58MCB Nstallation, Start-up, And Operating Instructions Manual pdf 18 page image

-- 18 --Table 1 – Minimum Free Area Required for Each Combustion Air Opening or Duct to OutdoorsFURNACEINPUT(BTUH)TWO HORIZONTAL DUCTS(1 SQ. IN./2,000 BTUH) (1,100 SQ. MM/KW)SINGLE DUCT OR OPENING(1 SQ. IN./3,000 BTUH) (734 SQ. MM/KW)TWO OPENINGS OR VERTICAL DUCTS(1 SQ. IN./4,000 BTUH) (550 SQ. MM/KW)Free Area ofOpening and DuctSq. In. (mm)Round DuctDia.In. (mm)Free Area of Openingand DuctSq. In (mm)Round DuctDia.In. (mm)Free Area of Openingand DuctSq. In (mm)Round DuctDia.In. (mm)44,000 22 (14194) 6 (152) 14.7 (9494) 5 (127) 11 (7097) 4 (102)66,000 33 (21290) 7 (178) 22 (14193) 6 (152) 16.5 (10645) 5 (127)88,000 44 (28387) 8 (203) 29.3 (18903) 7 (178) 22 (14193) 6 (152)110,000 55 (35484) 9 (229) 36.7 (23677) 7 (178) 27.5 (17741) 6 (152)132,000 66 (42581) 10 (254) 44 (28387) 8 (203) 33 (21290) 7 (198)154,000 77 (49677) 10 (254) 51.3 (33096) 9 (229) 38.5 (24838) 8 (203)EXAMPLE: Determining Free AreaFURNACE WATER HEATER TOTAL INPUT110,000 + 30,000 = (140,000 divided by 4,000) = 35.0 Sq. In. for each two Vertical Ducts or Openings66,000 + 40,000 = (106,000 divided by 3,000) = 35.3 Sq. In. for a Single Duct or Opening88,000 + 30,000 = (118,000 divided by 2,000) = 59.0 Sq. In. for each of two Horizontal DuctsTable 2 – Minimum Space Volumes for 100% Combustion, Ventilation and Dilution Air from OutdoorsOTHER THAN FAN-ASSISTED TOTAL(1,000’S BTUH GAS INPUT RATE)FAN-ASSISTED TOTAL(1,000’S BTUH GAS INPUT RATE)ACH 30 40 50 44 66 88 110 132 154Space Volume Ft 3 (M 3 )0.60 1,050(29.7)1,400(39.6)1,750(49.5)1,100(31.1)1,650(46.7)2,200(62.2)2,750(77.8)3,300(93.4)3,850(109.0)0.50 1,260(35.6)1,680(47.5)2,100(59.4)1,320(37.3)1,980(56.0)2,640(74.7)3,300(93.4)3,960(112.1)4,620(130.8)0.40 1,575(44.5)2,100(59.4)2,625(74.3)1,650(46.7)2,475(70.0)3,300(93.4)4,125(116.8)4,950(140.1)5,775(163.5)0.30 2,100(59.4)2,800(79.2)3,500(99.1)2,200(62.2)3,300(93.4)4,400(124.5)5,500(155.7)6,600(186.8)7,700(218.0)0.20 3,150(89.1)4,200(118.9)5,250(148.6)3,300(93.4)4,950(140.1)6,600(186.8)8,250(233.6)9,900(280.3)11,550(327.0)0.10 6,300(178.3)8,400(237.8)10,500(297.3)6,600(186.8)9,900(280.3)13,200(373.7)16,500(467.2)19,800(560.6)23,100(654.1)0.00 NP NP NP NP NP NP NP NP NPNON-DIRECT VENT (1-PIPE) APPLICATIONUNIT DAMAGE HAZARDFailure to follow this caution may result in intermittentunit operation.Do not install furnace in a corrosive or contaminatedatmosphere. Make sure all combustion and circulating airrequirements are met.CAUTION!Refer to the AIR FOR COMBUSTION AND VENTILATIONsection for details.AIR FOR COMBUSTION ANDVENTILATIONProvisions for adequate combustion, ventilation, and dilution airmust be provided in accordance with:S U.S. Installations: Section 9.3 of the NFPA 54/ANSIZ223.1--2006, Air for Combustion and Ventilation andapplicable provisions of the local building codes.S Canadian Installations: Part 8 of the CAN/CSA--B149.1--05,Venting Systems and Air Supply for Appliances and allauthorities having jurisdiction.FURNACE CORROSION HAZARDFailure to follow this warning could result in reduced furnacecomponent life.Air for combustion must not be contaminated by halogencompounds, which include fluoride, chloride, bromide, andiodide. These elements could corrode heat exchangers andshorten furnace life. Air contaminants are found in aerosolsprays, detergents, bleaches, cleaning solvents, salts, airfresheners, and other household products.! WARNINGThe following types of furnace installations may requireOUTDOOR AIR for combustion due to chemical exposures:S Commercial buildingsS Buildings with indoor poolsS Laundry roomsS Hobby or craft rooms, andS Chemical storage areasIf air is exposed to the following substances, it should not beused for combustion air, and outdoor air may be requiredfor combustion:S Permanent wave solutionsS Chlorinated waxes and cleaners58MCB