Carrier 58MCB Nstallation, Start-up, And Operating Instructions

Also see for 58MCB: User's information manual Service and maintenance instructions Owner's manual Service and maintenance instruction Installation, start-up, and operating instructions

Carrier 58MCB Nstallation, Start-up, And Operating Instructions Manual pdf 13 page image

-- 13 --To relocate condensate trap from the blower shelf to desiredlocation, perform the following:1. Remove 3 tubes connected to condensate trap.2. Remove trap from blower shelf by gently pushing tabsinward and rotating trap.3. Install casing hole filler cap (factory-supplied in looseparts bag) into blower shelf hole where trap was removed.CARBON MONOXIDE POISONING HAZARDFailure to follow this warning could result in personal injuryor death.Casing hole filler cap must be installed in blower shelf holewhen condensate trap is relocated to prevent combustionproducts being drawn in from appliances in theequipment room.! WARNING4. Install condensate trap into desired casing hole byinserting tube connection stubs through casing hole androtating until tabs snap into locking position.5. Fill unused condensate trap casing holes with plastic fillercaps (factory-supplied in loose parts bag).CONDENSATE TRAP TUBINGNOTE: See Fig. 10 or tube routing label on main furnace door tocheck for proper connections.1. Collector Box Drain Tubea. Install drain tube coupling (factory-supplied in looseparts bag) into collector box drain tube (blue label)which was previously connected to condensate trap.b. Connect large diameter drain tube and clamp(factory-supplied in loose parts bag) to drain tubecoupling, extending collector box drain tube.c. Route extended tube (blue label) to condensate trapand cut to appropriate length.d. Clamp tube to prevent any condensate leakage.2. Inducer Housing Drain Tubea. Remove and discard LOWER (molded) inducerhousing drain tube which was previously connected tocondensate trap.b. Use inducer housing drain extension tube (violet labeland factory-supplied in loose parts bag) to connectLOWER inducer housing drain connection to thecondensate trap.c. Determine appropriate length, cut, and connect tube.d. Clamp tube to prevent any condensate leakage.3. Relief Port Tubea. Extend collector box tube (green label) which waspreviously connected to the condensate trap bysplicing to small diameter tube (factory-supplied inloose parts bag).b. Route extended collector box pressure tube to reliefport connection on the condensate trap.c. Determine appropriate length, cut, and connect tube.d. Clamp tube to prevent any condensate leakage.CONDENSATE TRAP FIELD DRAIN ATTACHMENTSRefer to Condensate Drain section for recommendationsand procedures.PRESSURE SWITCH TUBINGThe LOWER collector box pressure tube (pink label) is factoryconnected to the pressure switch for use when furnace is installedin UPFLOW applications. This tube MUST be disconnected,extended, rerouted, and then reconnected to the pressure switch inHORIZONTAL LEFT applications.NOTE: See Fig. 10 or tube routing label on main furnace door tocheck for proper connections.Modify tube as described below.1. Disconnect collector box pressure tube (pink label)attached to pressure switch.2. Use smaller diameter tube (factory-supplied in loose partsbag) to extend tube disconnected in item 1.3. Route extended tube:a. Behind inducer housing.b. Between blower shelf and inducer housing.c. Behind inducer motor bracket.d. Between inducer motor and pressure switch.4. Determine appropriate length, cut, and reconnect tube topressure switch connection labeled COLLECTOR BOX.CONDENSATE TRAP FREEZE PROTECTIONRefer to Condensate Drain Protection section forrecommendations and procedures.CONSTRUCT A WORKING PLATFORMConstruct working platform where all required furnace clearancesare met. (See Fig. 3 and 11 or 12.)UNIT MAY NOT OPERATEFailure to follow this caution may result in intermittentunit operation.The condensate trap MUST be installed below furnace. SeeFig. 5 for dimensions. The drain connection to condensatetrap must also be properly sloped to an open drain.CAUTION!NOTE: Combustion-air and vent pipes are restricted to aminimum length of 5 ft. (1.5 M) (See Table 11.)NOTE: A 12-in. (305 mm) minimum offset pipe section isrecommended with short (5 to 8 ft (1.5 to 2.4 M)) vent systems.This recommendation is to reduce excessive condensate dropletsfrom existing vent pipe. (See Fig. 11, 12 or 41.)Step 5 -- Horizontal Right (Supply-Air Discharge)ApplicationsA horizontal right furnace application is where furnace blower islocated to the left of combustion and controls section of furnace,and conditioned air is discharged to the right.MINOR PROPERTY DAMAGEFailure to follow this caution may result in minorproperty damage.Local codes may require a drain pan under entire furnace andcondensate trap when a condensing furnace is used in atticapplication or over a finished ceiling.CAUTION!NOTE: In Canada, installations shall be in accordance withcurrent NSCNGPIC Installation Codes and/or local codes.NOTE: The auxiliary junction box (J-Box) MUST be relocatedto opposite side of furnace casing. (See Fig. 13.) See ElectricalConnection section for J-Box relocation.CONDENSATE TRAP LOCATIONThe condensate trap must be removed from the factory-installedblower shelf location and relocated in selected applicationlocation as shown in Fig. 2 or 13.58MCB