73Figure 12-9 PVC/CPVC air intake/vent connectionA = MOMENTIVE - RTV 106high temperature silicone (orequivalent) (Field provided)B = Flue exhaust adapter forPVC/CPVC pipeF = 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 pipeABFPFHGALN020010.01.010Combustionair intakeFlueexhaustFigure 12-10 PVC/CPVCair intake/Vent connectioncorrectly in placeExtend theflue exhaustpipe tooutsidebuilding020010.01.016Extend theair intakepipe tooutsidebuilding12 - INSTALLATION - CATEGORY IV: Vent and combustion air12.6.2 - PVC/CPVC airintake connectionCombustion Air Intakeconnection (see Figure 12-9Item “P”). This connection 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 PVC/CPVC pipe to theair intake connection proceed as followwhile referring to Figure 12-9:1. Prepare the connection betweenadapter “P” and pipe “N” likedescribed on Section 12.6.1;2. Insert the air inlet PVC/CPVC pipe,for 3” into the adapter “P”;3. Tighten the clamp “F” tomechanically secure the adapter “P”to the pipe.12.6.3 - PVC/CPVC ventconnectionVent connection (see Figure12-9 Item “C”). This connectionis used to provide a passageway forconveying combustion gas to theoutside. Vent piping must be supportedper the National Building Code, Section305, Table 305.4 or as local codesdictate.To connect a PVC/CPVC pipe to thevent connection proceed as followwhile referring to Figure 12-9:1. Prepare the connection betweenadapter “B” and pipe “G” likedescribed on Section 12.6.1;2. Insert the flue exhaust PVC/CPVCpipe, for 3” into the adapter “B”;3. Tighten the clamp “F” tomechanically secure the adapter “B”to the pipe.WARNING!!!WARNING!!! Do notinsulate PVC/CPVC exhaustpipe nor install into anenclosure, 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!020010.01.039CAUTION!!! Apply a liberaleven coat of MOMENTIVE -RTV 106 high temperaturesilicone (or equivalent) to theinternal side of the heateradapter (item “B” and “P”fig.12-9)
