York P*UR 40 Installation Instructions Manual

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York P*UR 40 Installation Instructions Manual Manual pdf 18 page image

650.75-N4U 035-14370-00018 Unitary Products GroupPIPING ASSEMBLYThe final assembly procedure for the vent/combustion air pip-ing is as follows:1. Cut piping to the proper length, beginning at the furnace.2. Deburr the piping inside and outside.3. Chamfer the outer edges of the piping.4. Dry-fit the entire vent/combustion air piping assembly.5. Disassemble the piping and apply cement primer andcement per the cement manufacturer's instructions.Primer and cement must conform to ASTM D2564 forPVC, or ASTM D2235 for ABS piping.6. All joints must be made to provide a permanent, air-tight,water-tight seal.7. Support the combustion air and vent piping such that it isangled 1/4” per linear foot so that condensate will flowback toward the furnace. Piping should be supportedwith pipe hangers to prevent sagging. Maximum spacingbetween hangers is five (5) feet, except SDR-PVC pip-ing, where maximum spacing is three (3) feet.8. Seal around the openings where the combustion air andvent piping pass through the roof of side wall.FIGURE 19 : HORIZONTAL TERMINATION CON-FIGURATION WITH HORIZONTALEXTENSIONFIGURE 20 : VERTICAL TERMINATIONFIGURE 21 : DOUBLE SIDEWALL TERMINATIONVENTOVERHANGCOMBUSTION AIR12" SEPARATION BETWEENBOTTOM OF COMBUSTION AIRAND BOTTOM OF VENTMAINTAIN 12" CLEARANCE ABOVEHIGHEST ANTICIPATED SNOW LEVELOR GRADE, WHICHEVER IS GREATER12" MINIMUM90°18" MAXIMUMMAINTAIN 12" MINIMUMCLEARANCE ABOVE HIGHESTANTICIPATED SNOW LEVEL.MAXIMUM OF 24" ABOVE ROOFCOMBUSTION AIRVENT12" VERTICAL SEPARATIONBETWEEN COMBUSTIONAIR AND VENTVENTCOMBUSTION AIR2"FIGURE 22 : DOUBLE ROOFTOP TERMINATIONSolvent cements are flammable and must be usedin well-ventilated areas only. Keep them away fromheat, sparks and open flames (including pilots). Donot breathe vapors and avoid contact with skin andeyes.6"