Carrier 59SP5A Installation, Start-up, Operating And Service And Maintenance Instructions

Also see for Infinity 59TN6A: Installation, start-up, operating and service and maintenance instructions Installation, start-up, operating and service and maintenance instructions Product data Product data Installation, start-up, operating and service and maintenance instructions

203. Construct plenum to dimensions specified in Table 6 andFig. 19.4. Install special base coil assembly or coil box as shown in inFig. 19.NOTE: It is recommended that the perforated supply--air ductflanges be completely removed from furnace when installing thefurnace on a factory--supplied cased coil or coil box. To remove thesupply--air duct flange, use wide duct pliers or hand seamers tobend flange back and forth until it breaks off. Be careful of sharpedges. (See Fig. 20.)CUT HAZARDFailure to follow this caution may result in personal injury.Sheet metal parts may have sharp edges or burrs. Use careand wear appropriate protective clothing, safety glasses andgloves when handling parts, and servicing furnaces.CAUTION!Connect supply--air duct to supply--air outlet on furnace. Bendflange inward past 90_ with wide duct pliers (See Fig. 20.) 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 external tofurnace casing.Return 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 return--air opening(bottom inlet). DO NOT cut into casing sides (left or right).Bypass humidifier connections should be made at ductwork or coilcasing sides exterior to furnace. (See Fig. 25.)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, performthe following:1. Tilt or raise furnace and remove 4 screws holding bottomplate. (See Fig. 22.)2. Remove bottom plate.3. Remove bottom closure panel.4. Reinstall bottom plate and screws.Horizontal InstallationNOTE: The furnace must be pitched forward as shown in Fig. 23for proper condensate drainage.FIRE, EXPLOSION, AND CARBON MONOXIDEPOISONING HAZARDFailure to follow this warning could result in personalinjury, death, or property damage.Do not install the furnace on its back or hang furnace withcontrol compartment facing downward. Safety controloperation will be adversely affected. Never connectreturn--air ducts to the back of the furnace.! WARNINGThe furnace can be installed horizontally in an attic or crawlspaceon either the left--hand (LH) or right--hand (RH) side. The furnacecan be hung from floor joists, rafters or trusses or installed on anon--combustible platform, blocks, bricks or pad.Platform Furnace SupportConstruct working platform at location where all required furnaceclearances are met. (See Table 2 and Fig. 27.) For furnaces with1--in. (25 mm) clearance requirement on side, set furnace onnon--combustible blocks, bricks or angle iron. For crawlspaceinstallations, if the furnace is not suspended from the floor joists,the ground underneath furnace must be level and the furnace set onblocks or bricks.Suspended Furnace SupportThe furnace must be supported under the entire length of thefurnace with threaded rod and angle iron. (See Fig. 28.) Secureangle iron to bottom of furnace as shown.Roll--Out ProtectionProvide a minimum 12--in. x 22--in. (305 x 559 mm) piece of sheetmetal for flame roll--out protection in front of burner area forfurnaces closer than 12--in. (305 mm) above the combustible deckor suspended furnaces closer than 12--in. (305 mm) to joists. Thesheet metal MUST extend underneath the furnace casing by 1--in.(25 mm) with the door removed.The bottom closure panel on furnaces of widths 17--1/2--in. (445mm) and larger may be used for flame roll--out protection whenbottom of furnace is used for return air connection. See Fig. 27 forproper orientation of roll--out shield.Supply Air ConnectionsFor a furnace not equipped with a cooling coil, the outlet duct shallbe provided with a removable access panel. This opening shall beaccessible when the furnace is installed and shall be of such a sizethat the heat exchanger can be viewed for possible openings usinglight assistance or a probe can be inserted for sampling the airstream. The cover attachment shall prevent leaks.Connect supply--air duct to flanges on furnace supply--air outlet.Bend flange upward to 90_ with wide duct pliers. (See Fig. 20.)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.Return Air ConnectionsThe return--air duct must be connected to bottom of the furnace.The side of casing that faces downward may also be used for returnair connection. A combination of the bottom and downwardfacing side may also be used. The side of the casing cannot beused as a return air connection. Bypass humidifier may be attachedinto unused return air side of the furnace casing. (See Fig. 26.)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, performthe following:59SP5A