Carrier 58CVA Installation, Start-up, Operating And Service And Maintenance Instructions

Carrier 58CVA Installation, Start-up, Operating And Service And Maintenance Instructions Manual pdf 8 page image

8Table 2 – Minimum Free Area Required for Each Combustion Air opening of Duct to OutdoorsFURNACEINPUT(BTUH)TWO HORIZONTAL DUCTS SINGLE DUCT OR OPENING TWO OPENINGS OR VERTICAL DUCTS(1 SQ. IN./2,000 BTUH) (1,100 SQ. MM/KW) (1 SQ. IN./3,000 BTUH) (734 SQ. MM/KW) (1 SQ. IN./4,000 BTUH) (550 SQ. MM/KW)Free Area of Openingand DuctSq. In. (Sq. mm)Round DuctDia.In. (mm)Free Area of Openingand DuctSq. In. (Sq. mm)Round DuctDia.In. (mm)Free Area of Openingand DuctSq. In. (Sq. mm)Round DuctDia.In. (mm)44,000 22 (14194) 6 (152) 14.7 (9484) 5 (127) 11 (7096) 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 (17742) 6 (152)132,000 66 (42580) 10 (254) 44 (28387) 8 (203) 33 (21290) 7 (178)154,000 77 (49677) 10 (254) 51.3 (33096) 9 (229) 38.5 (24839) 8 (203)EXAMPLES: 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 3 – Minimum Space Volumes for 100% Combustion, Ventilation, and Dilution from IndoorsOTHER 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 Ft3 (M3 )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 NPNP = Not PermittedAIR 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--2009 , Air for Combustion and Ventilation andapplicable provisions of the local building codes.FURNACE CORROSION HAZARDFailure to follow this caution may result in furnace damage.Air for combustion must not be contaminated by halogencompounds, which include fluoride, chloride, bromide, andiodide. These elements can corrode heat exchangers andshorten furnace life. Air contaminants are found in aerosolsprays, detergents, bleaches, cleaning solvents, salts, airfresheners, and other household products.CAUTION!CARBON MONOXIDE POISONING HAZARDFailure to follow this warning could result in personalinjury or death.The operation of exhaust fans, kitchen ventilation fans,clothes dryers, attic exhaust fans or fireplaces could create aNEGATIVE PRESSURE CONDITION at the furnace.Make--up air MUST be provided for the ventilation devices,in addition to that required by the furnace. Refer to theCarbon Monoxide Poisoning Hazard warning in the ventingsection of these instructions to determine if an adequateamount of make--up air is available.! WARNINGThe requirements for combustion and ventilation air depend uponwhether or not the furnace is located in a space having a volumeof at least 50 cubic feet per 1,000 Btuh input rating for all gasappliances installed in the space.S Spaces having less than 50 cubic feet per 1,000 Btuhrequire the OUTDOOR COMBUSTION AIRMETHOD.58CV