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

Carrier 58CVA Installation, Start-up, Operating And Service And Maintenance Instructions Manual pdf 14 page image

14Supply Air ConnectionsFor a furnace not equipped with a cooling coil, the outlet ductshall be provided with a removable access panel. This openingshall be accessible when the furnace is installed and shall be ofsuch a size that the heat exchanger can be viewed for possibleopenings using light assistance or a probe can be inserted forsampling the air stream. The cover attachment shall prevent leaks.Upflow and Horizontal FurnacesConnect supply--air duct to flanges on furnace supply--air outlet.Bend flange upward to 90_ with wide duct pliers. (See Fig. 14.)The supply--air duct must be connected to ONLY the furnacesupply--outlet--air duct flanges or air conditioning coil casing(when used). DO NOT cut main furnace casing side to attachsupply air duct, humidifier, or other accessories. All accessoriesMUST be connected to duct external to furnace main casing.NOTE: For horizontal applications, the top most flange may bebent past 90_ to allow the evaporator coil to hang on the flangetemporarily while the remaining attachment and sealing of thecoil are performed.Downflow FurnacesConnect supply--air duct to supply--air outlet on furnace. Bendflange inward past 90_ with wide duct pliers (See Fig. 14.) Thesupply--air duct must be connected to ONLY the furnace supplyoutlet or air conditioning coil casing (when used). When installedon combustible material, supply--air duct must be connected toONLY the factory--approved accessory subbase, or afactory--approved air conditioning coil casing. DO NOT cut mainfurnace casing to attach supply side air duct, humidifier, or otheraccessories. All accessories MUST be connected to duct externalto furnace casing.UPFLOW DOWNFLOW HORIZONTALYESNO NOYESYESYESNO120MINYES 120MINYES120MIN90 90A02020Fig. 14 -- Duct Flanges58CV