7712 - INSTALLATION - CATEGORY IV: Vent and combustion air12.8.1 - Polypropylene airintake connectionCombustion Air Intake connection(see Figure 12-13 Item “M”) is usedto provide combustion air directly tothe heater from outdoors. Combustionair piping must be supported perguidelines listed in the NationalMechanical Code, Section 305, Table305.4 or as local codes dictate.To connect a polypropylene pipe tothe air intake connection proceed asfollows while referring to Figure 12-13:1. install heater adapter “P” (Fieldprovided) above exit “M” usinggasket “D” and bolts “E”.2. Insert vent pipe “N”, into adapter“P”, following instruction ofpolypropylene pipe manufacturer.12.8.2 - Polypropylenevent connectionVent connection (Figure 12-13 item“C”) is used to provide a passagewayfor conveying combustion gasesto the outside. Vent piping must besupported per the National BuildingCode, Section 305, Table 305.4 or aslocal codes dictate.To connect a polypropylene pipeto the vent connection proceed asfollows while referring to Figure 12-13:1. install heater adapter “B” (Fieldprovided) above exit “C” usinggasket “D” and bolts “E”.2. Insert vent pipe “G”, into adapter“B”, following instruction ofpolypropylene pipe manufacturer.WARNING!!!WARNING!!! Do notinsulate polypropyleneexhaust pipe nor install intoan enclosure, closet, alcove orany other obstruction therebypreventing the cooling of theexhaust pipe. Failure to followthis warning could result inexcessive levels of carbonmonoxide or a fire, which canresult in severe personal injuryor death!Figure 12-13 Polypropyleneair intake/vent connectionFigure 12-14 Polypropyleneair intake/vent connectioncorrectly in placeExtend theflue exhaustpipe tooutsidebuilding020010.01.016Extend theair intakepipe tooutsidebuildingA = MOMENTIVE - RTV 106high temperature silicone (orequivalent) (Field provided)B = Flue exhaust adapter forPVC/CPVC pipeC = Flue exhaust connectionD = GasketE = Fixing screwsF = Mechanically secure clampG = PVC/CPVC exhaust pipe(Field provided)H = Combustion analizationprobe (Field installed)L = Cap (Field provided)N = PVC/CPVC air inlet pipe(Field provided)P = Air intake adapter for PVC/CPVC pipeCMDABFDAEPFHGLN020010.01.010_PPCombustionair intakeFlueexhaust020010.01.039CAUTION!!! Apply a liberaleven coat of MOMENTIVE -RTV 106 high temperaturesilicone (or equivalent) to theinternal side of the heateradapter (item “B” and “P”fig.12-13)
