Carrier SEER 48ES Installation Instructions Manual

Also see for 48ES: Owner's information manual Installation instructions

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Carrier SEER 48ES Installation Instructions Manual Manual pdf 8 page image

81 234 A08015DETAIL A(914 mm)A08487SMALL CABINET LARGE CABINETUnit * 024 030 036 Unit * 042 048 060lb kg lb kg lb kg lb kg lb kg lb kgRiggingWeight 292 133 297 135 307 139 RiggingWeight 398 181 406 184 428 194* For 460 volt units add 14 lb (6.35 kg) to the rigging weight.NOTE: See dimensional drawing for corner weights.Fig. 6 -- 48ES Unit Suggested RiggingStep 6 — Connect Condensate DrainNOTE: When installing condensate drain connection be sure tocomply with local codes and restrictions.Model 48ES disposes of condensate water through a 3/4 in. NPTfitting which exits through the base on the evaporator coil accessside. See Fig. 3 & 4 for location.Condensate water can be drained directly onto the roof in rooftopinstallations (where permitted) or onto a gravel apron in groundlevel installations. Install a field--supplied 2--in. (50.8 mm)condensate trap at the end of condensate connection to ensureproper drainage. Make sure that the outlet of the trap is at least 1 in.(25.4 mm) lower than the drain--pan condensate connection toprevent the pan from overflowing (See Fig. 7). Prime the trap withwater. When using a gravel apron, make sure it slopes away fromthe unit.Connect a drain tube using a minimum of 3/4--in. PVC or 3/4--in.copper pipe (all field--supplied) at the outlet end of the 2--in. (50.8mm) trap. Do not undersize the tube. Pitch the drain tubedownward at a slope of at least 1--in. (25.4 mm) for every 10 ft (3.1m) of horizontal run. Be sure to check the drain tube for leaks.TRAPOUTLET1-in. (25.4 mm) min.2-in. (50.8 mm) min.C00009BFig. 7 -- Condensate TrapStep 7 — Install Flue HoodThe flue assembly is secured and shipped in the return air duct.Remove duct cover to locate the assembly (See Fig. 9 and 10).NOTE: Dedicated low NOx models MUST be installed inCalifornia Air Quality Management Districts where a Low NOxrule exists.These models meet the California maximum oxides of nitrogen(NOx) emissions requirements of 40 nanograms/joule or less asshipped from the factory.NOTE: Low NOx requirements apply only to natural gasinstallations.CARBON MONOXIDE POISONING HAZARDFailure to follow this warning could result in personalinjury or death.The venting system is designed to ensure proper venting.The flue hood assembly must be installed as indicted in thissection of the unit installation instructions.! WARNINGInstall the flue hood as follows:1. This installation must conform with local building codesand with NFPA 54/ANSI Z223.1 National Fuel Gas Code(NFGC), (in Canada, CAN/CGA B149.1, and B149.2)latest revision. Refer to Provincial and local plumbing orwastewater codes and other applicable local codes.2. Remove flue hood from shipping location (inside the returnsection of the blower compartment--see Fig. 9 & 10). Re-move the return duct cover to locate the flue hood. Placeflue hood assembly over flue panel. Orient screw holes influe hood with holes in the flue panel.3. Secure flue hood to flue panel by inserting a single screw onthe top flange and the bottom flange of the hood.Step 8 — Install Gas PipingThe gas supply pipe enters the unit through the access holeprovided. The gas connection to the unit is made to the 1/2--in.(12.7 mm) FPT gas inlet on the gas valve.Install a gas supply line that runs to the heating section. Refer tothe NFGC for gas pipe sizing. Do not use cast--iron pipe. It isrecommended that a black iron pipe is used. Check the local utilityfor recommendations concerning existing lines. Size gas supplypiping for 0.5 in. wc maximum pressure drop. Never use pipesmaller than the 1/2--in. (12.7 mm) FPT gas inlet on the unit gasvalve.48ES