b. Remove and discard UPPER (molded) inducer housingdrain tube which was previously connected to condensatetrap.c. Install cap and clamp on UPPER inducer housing drainconnection where molded drain tube was removed.d. Use inducer housing drain tube (violet label and factory-supplied in loose parts bag) to connect LOWER inducerhousing drain connection to the condensate trap.e. Connect inducer housing drain connection to condensatetrap.(1.) Condensate Trap Located on Left Side of Casing(a.) Determine appropriate length and cut.(b.) Connect tube to condensate trap.(c.) Clamp tube to prevent any condensate leakage.(2.) Condensate Trap Located on Right Side of Casing(a.) Route inducer housing drain tube (violet label)directly from inducer housing to condensate trapas shown in Fig. 9.(b.) Determine appropriate length and cut.(c.) Connect tube to condensate trap.(d.) Clamp tube to prevent any condensate leakage.3. Relief Port TubeRefer to Pressure Switch Tubing section for connection procedure.CONDENSATE TRAP FIELD DRAIN ATTACHMENTRefer to Condensate Drain section for recommendations andprocedures.PRESSURE SWITCH TUBINGOne collector box pressure tube (pink label) is factory connected tothe pressure switch for use when furnace is installed in UPFLOWapplications. This tube MUST be disconnected and used for thecondensate trap relief port tube. The other collector box pressuretube (green label) which was factory connected to the condensatetrap relief port connection MUST be connected to the pressureswitch in DOWNFLOW or HORIZONTAL RIGHT applications.NOTE: See Fig. 8 or 9 or tube routing label on main furnace doorto check for proper connections.1. Disconnect collector box pressure tube (pink label) attached topressure switch.2. Extend collector box pressure tube (green label) which waspreviously connected to condensate trap relief port connectionby splicing to small diameter tube (factory-supplied in looseparts bag).3. Connect collector box pressure tube (green label) to pressureswitch connection labeled COLLECTOR BOX.4. Extend collector box pressure tube (pink label) which waspreviously connected to pressure switch by splicing to remain-ing small diameter tube (factory-supplied in loose parts bag).5. Route this extended tube (pink label) to condensate trap reliefport connection.6. Determine appropriate length, cut, and connect tube.7. Clamp tube to relief port connection.CONDENSATE TRAP FREEZE PROTECTIONRefer to Condensate Drain Protection section for recommenda-tions and procedures.Step 4—Horizontal Left (Supply-Air Discharge)ApplicationsA horizontal left furnace application is where furnace blower islocated to the right of combustion and controls section of furnace,and conditioned air is discharged to the left.CONDENSATE TRAP LOCATIONThe condensate trap must be removed from the factory-installedblower shelf location and relocated in selected application locationas shown in Fig. 2 or 10.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 tabs inwardand rotating trap.3. Install casing hole filler cap (factory-supplied in loose partsbag) 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 the equipmentroom.4. Install condensate trap into left-hand side 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 loose partsbag) into collector box drain tube (blue label) which waspreviously connected to condensate trap.b. Connect large diameter drain tube and clamp (factory-supplied in loose parts bag) to drain tube coupling, extend-ing collector box drain tube.c. Route extended tube (blue label) to condensate trap and cutto appropriate length.d. Clamp tube to prevent any condensate leakage.2. Inducer Housing Drain Tubea. Remove and discard LOWER (molded) inducer housingdrain tube which was previously connected to condensatetrap.b. Use inducer housing drain extension tube (violet label andfactory-supplied in loose parts bag) to connect LOWERinducer housing drain connection to the condensate 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 was previ-ously connected to the condensate trap by splicing to smalldiameter tube (factory-supplied in loose parts bag).b. Route extended collector box pressure tube to relief portconnection on the condensate trap.10