Carrier 59SC5B Installation, Start-up, Operating And Service And Maintenance Instructions

Also see for 59SC5B: Product data

22UPFLOW DOWNFLOW HORIZONTALYESNO NOYESYESYESNO120°MINYES 120°MINYES120°MIN90° 90°PERFORATEDDISCHARGE DUCTFLANGEA10493Fig. 19 -- Duct FlangesReturn Air ConnectionsFIRE HAZARDA failure to follow this warning could cause personal injury,death and/or property damage.Never connect return--air ducts to the back of the furnace.Follow instructions below.! WARNINGThe return--air duct must be connected to bottom, sides (left orright), or a combination of bottom and side(s) of main furnacecasing. Bypass humidifier may be attached into unused return airside of the furnace casing. See Fig. 22, 23, and 24.Bottom Return Air InletThese furnaces are shipped with bottom closure panel installed inbottom return--air opening. Remove and discard this panel whenbottom return air is used. To remove bottom closure panel, see Fig.27 and 28.Side Return Air InletThese furnaces are shipped with bottom closure panel installed inbottom return--air opening. This panel MUST be in place whenonly side return air is used. Where required by code, seal bottomclosure to furnace with tape, mastic or other durable sealingmethod.NOTE: Side return--air openings can be used in UPFLOW andsome HORIZONTAL configurations. Do not use side return--airopenings in DOWNFLOW configuration. See Fig. 22, 23, and 24.Leveling Legs (If Desired)In upflow position with side return inlet(s), leveling legs may beused. See Fig. 20. Install field--supplied, 5/16 x 1--1/2 in. (8 x 38mm) (max) corrosion--resistant machine bolts, washers and nuts.NOTE: Bottom closure must be used when leveling legs are used.It may be necessary to remove and reinstall bottom closure panel toinstall leveling legs. To remove bottom closure panel, see Fig. 27and 28.To install leveling legs:1. Position furnace on its back. Locate and drill a hole in eachbottom corner of furnace.2. For each leg, install nut on bolt and then install bolt withnut in hole. (Install flat washer if desired.)3. Install another nut on other side of furnace base. (Install flatwasher if desired.)4. Adjust outside nut to provide desired height, and tighten in-side nut to secure arrangement.5. Reinstall bottom closure panel if removed.1 3 /41 3 /41 3/ 41 3/ 45/ 165 /165/ 165/ 16(44mm)(8mm)(44mm)(8mm)(8mm)(8mm)(44mm)(44mm)A89014Fig. 20 -- Leveling LegsDownflow InstallationNOTE: The furnace must be pitched as shown in Fig. 21 forproper condensate drainage.Supply Air ConnectionsNOTE: For downflow applications, this furnace is approved foruse on combustible flooring when any one of the followingaccessories are used:S Special Base, KGASBS Cased Coil Assembly Part No. CNPV, CNRV, CAP, or CARS Coil Box Part No. KCAKC1. Determine application being installed from Table 8.2. Construct hole in floor per Table 8 and Fig. 30.