-- 10 --COLLECTOR BOXTUBE (PINK)COLLECTOR BOXTUBE (GREEN)INDUCER HOUSING(MOLDED) DRAINTUBE (BEHINDCOLLECTOR BOXDRAIN TUBE)COLLECTOR BOXDRAIN TUBE (BLUE)FIELD-INSTALLEDFACTORY-SUPPLIEDDRAIN TUBECOUPLING (LEFTDRAIN OPTION)FIELD-INSTALLEDFACTORY-SUPPLIEDDRAIN TUBEFIELD-INSTALLEDFACTORY-SUPPLIED1 /2 -IN. CPVC STREETELBOWS (2) FORLEFT DRAIN OPTIONFIELD-INSTALLEDFACTORY-SUPPLIEDDRAIN TUBECOUPLING (RIGHTDRAIN OPTION)CAPCOLLECTOR BOXDRAIN TUBE (BLUE& WHITE STRIPED)PLUGCONDENSATETRAPA94163Fig. 6 -- Factory-Shipped Upflow Tube Configuration(Shown with Blower Access Panel Removed)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. Connect relief port tube (green label) tocondensate trap.b. Extend this tube (if required) by splicing to smalldiameter tube (factory-supplied in loose parts bag).c. Determine appropriate length, cut, and connect tube.CONDENSATE TRAP FIELD DRAINATTACHMENTRefer to Condensate Drain section for recommendationsand procedures.PRESSURE SWITCH TUBINGThe LOWER collector box pressure tube (pink label) is factoryconnected to the pressure switch and should not requireany modification.COLLECTOR BOXTUBE (PINK)CONDENSATETRAPCOLLECTOR BOXTUBE (GREEN)COLLECTOR BOXDRAIN TUBE (BLUE)INDUCERHOUSINGDRAIN TUBE(VIOLET)CAPCOLLECTOR BOXDRAIN TUBE (BLUE& WHITE STRIPED)PLUGA94164Fig. 7 -- Alternate Upflow Configuration and Trap LocationNOTE: See Fig. 6 or 7 or tube routing label on main furnacedoor to check for proper connections.UPPER COLLECTOR BOX AND INDUCERHOUSING (UNUSED) DRAIN CONNECTIONSUpper Collector Box Drain ConnectionAttached to the UPPER collector box drain connection is afactory-installed corrugated, plugged tube (blue and white stripedlabel). This tube is plugged to prevent condensate leakage in thisapplication. Ensure this tube is plugged.NOTE: See Fig. 6 or 7 or tube routing label on main furnacedoor to check for proper connections.Upper Inducer Housing Drain ConnectionAttached to the UPPER (unused) inducer housing drainconnection is a cap and clamp. This cap is used to preventcondensate leakage in this application. Ensure this connectionis capped.NOTE: See Fig. 6 or 7 or tube routing label on main furnacedoor to check for proper connections.CONDENSATE TRAP FREEZE PROTECTIONRefer to Condensate Drain Protection section forrecommendations and procedures.Step 3—Downflow ApplicationsA downflow furnace application is where furnace blower islocated above combustion and controls section of furnace, andconditioned air is discharged downwards.CONDENSATE TRAP LOCATIONThe condensate trap must be removed from the factory-installedblower shelf location and relocated in selected applicationlocation as shown in Fig. 2, 8, or 9.