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

Carrier 58CVA Installation, Start-up, Operating And Service And Maintenance Instructions Manual pdf 11 page image

111 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. 10 -- Leveling LegsNOTE: Bottom closure must be used when leveling legs areused. It may be necessary to remove and reinstall bottom closurepanel to install leveling legs. To remove bottom closure panel, seeItem 1 in Bottom Return Air Inlet section in Step 1 above.To install leveling legs:1. Position furnace on its back. Locate and drill a hole ineach bottom corner of furnace. (See Fig. 10.)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. (Installflat washer if desired.)4. Adjust outside nut to provide desired height, and tighteninside nut to secure arrangement.5. Reinstall bottom closure panel if removed.DOWNFLOW INSTALLATIONNOTE: For downflow applications, this furnace is approved foruse on combustible flooring when any one of the following 3accessories are used:S Special Base, KGASBS Cased Coil Assembly Part No. CNPV, CNRV, CAP, orCARS Coil Box Part No. KCAKC1. Determine application being installed from Table 4.2. Construct hole in floor per Table 4 and Fig. 11.3. Construct plenum to dimensions specified in Table 4 andFig. 11.4. If downflow subbase, KGASB is used, install as shown inFig. 12. If Coil Assembly Part No. CPVP, CAPMP orCNPVP Coil Box Part No. KCAKC is used, install asshown in Fig. 13.NOTE: It is recommended that the perforated supply--air ductflanges be completely folded over or removed from furnace wheninstalling the furnace on a factory--supplied cased coil or coil box.To remove the supply--air duct flange, use wide duct pliers orhand seamers to bend flange back and forth until it breaks off. Becareful of sharp edges. (See Fig. 14.)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,perform the following:1. Tilt or raise furnace and remove 2 screws holding bottomfiller panel. (See Fig. 9.)2. Rotate bottom filler panel downward to release holdingtabs.3. Remove bottom closure panel.4. Reinstall bottom filler panel and screws.HORIZONTAL INSTALLATIONFIRE, 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.Suspended Furnace SupportThe furnace may be supported under each end with threaded rod,angle iron or metal plumber’s strap as shown. (See Fig. 15 and16.) Secure angle iron to bottom of furnace as shown.Heavy--gauge sheet metal straps (plumber’s straps) may be usedto suspend the furnace from each bottom corner. To preventscrews from pulling out, use 2 #8 x in. screws into the side and 2#8 x in. screws in the bottom of the furnace casing for each strap.(See Fig. 15 and 16.)If the screws are attached to ONLY the furnace sides and not thebottom, the straps must be vertical against the furnace sides andnot pull away from the furnace sides, so that the strap attachmentscrews are not in tension (are loaded in shear) for reliable support.Platform Furnace SupportConstruct working platform at location where all required furnaceclearances are met. (See Fig. 2 and 17.) For furnaces with 1--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 seton blocks or bricks.58CV