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

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Carrier 58CTW Installation, Start-up, Operating And Service And Maintenance Instructions Manual pdf 9 page image

91 SQ IN.PER4000BTUH*DUCTSTOOUTDOORS1 SQ IN.PER 4000BTUH*CIRCULATINGAIR DUCTS VENTTHROUGHROOFDBACE1 SQ IN.PER 4000BTUH*DUCTTOOUTDOORSCIRCULATING AIR DUCTS1 SQ IN.PER 2000BTUH*1 SQ IN.PER 2000BTUH*DUCTSTOOUTDOORS12″ MAX12″ MAX12″ MAX12″MAX12″MAXOUTDOORS1 SQ IN.PER4000BTUH*FGCLEARANCE IN FRONTOF COMBUSTION AIROPENINGS SHALL BEAT LEAST 3 IN.(305mm)(305mm)(305mm)(305mm)(305mm)(76mm)*Minimum dimensions of 3--- in. (76 mm).NOTE: Use any of the following combinations of openings:A & B C & D D & E F & GA03174Fig. 7 -- Air for Combustion, Ventilation, and Dilution forOutdoorsS Spaces having at least 50 cubic feet per 1,000 Btuhmay use the INDOOR COMBUSTION AIR,STANDARD or KNOWN AIR INFILTRATIONMETHOD.Outdoor Combustion Air Method1. Provide the space with sufficient air for proper combus-tion, ventilation, and dilution of flue gases using perman-ent horizontal or vertical duct(s) or opening(s) directlycommunicating with the outdoors or spaces that freelycommunicate with the outdoors.2. Fig. 7 illustrates how to provide TWO OUTDOOROPENINGS, one inlet and one outlet combustion andventilation air opening, to the outdoors.e. One opening MUST commence within 12 in. (300mm) of the ceiling and the second opening MUSTcommence within 12 in. (300 mm) of the floor.f. Size openings and ducts per Fig. 7 and Table 1.g. TWO HORIZONTAL DUCTS require 1 sq. in. (645sq. mm) of free area per 2,000 Btuh (1,100 mm 2/kW)of combined input for all gas appliances in the spaceper Fig. 7 and Table 1.h. TWO OPENINGS OR VERTICAL DUCTS require 1sq. in. (645 sq. mm) of free area per 4,000 Btuh (550mm 2/kW) for combined input of all gas appliances inthe space per Fig. 7 and Table 1.3. ONE OUTDOOR OPENING requires:a. 1 sq. in. (645 sq. mm) of free area per 3,000 Btuh(734 mm 2 /kW) for combined input of all gas appli-ances in the space per Table 1 andb. Not less than the sum of the areas of all vent connect-ors in the space.CIRCULATING AIRDUCTS6" MIN(FRONT)ÜCIRCULATING AIR DUCTSVENT THROUGH ROOF1 SQ IN.PER 1000BTUH* IN DOOROR WALL12" MAX1 SQ IN.PER 1000BTUH* IN DOOROR WALL12" MAXUNCONFINEDSPACEINTERIORHEATEDSPACECLEARANCE IN FRONT OF COMBUSTION AIROPENINGS SHALL BE AT LEAST 3 IN.(305mm)(152mm)(305mm)* Minimum opening size is 100 sq in. (64516 sq. mm)with minimum dimensionsof 3 in. (76 mm)† Minimum of 3 in. (76 mm) when type-B1 vent is used.A03175Fig. 8 -- Air for Combustion, Ventilation, and Dilution fromIndoorsThe opening shall commence within 12 in. (300 mm) of theceiling. Appliances in the space shall have clearances of at least 1in. (25 mm) from the sides and back and 6 in. (150 mm) from thefront. The opening shall directly communicate with the outdoorsor shall communicate through a vertical or horizontal duct to theoutdoors or spaces (crawl or attic) that freely communicate withthe outdoors.Indoor Combustion AirE NFPA & AGAStandard and Known--Air--Infiltration Rate MethodsIndoor air is permitted for combustion, ventilation, and dilution,if the Standard or Known--Air--Infiltration Method is used.CARBON MONOXIDE POISONING HAZARDFailure to follow this warning could result in personalinjury or death.Many homes require air to be supplied from outdoorsfor furnace combustion, ventilation, and dilution of fluegases.The furnace combustion air supply must be provided inaccordance with this instruction manual.! WARNINGThe Standard Method:1. The space has no less volume than 50 cubic feet per 1,000Btuh of the maximum input ratings for all gas appliancesinstalled in the space and2. The air infiltration rate is not known to be less than 0.40air changes per hour (ACH).The Known Air Infiltration Rate Method shall be used, if theinfiltration rate is known to be:1. Less than 0.40 ACH and2. Equal to or greater than 0.10 ACH