Raypak Xtherm 1505A Installation & Operating Instructions Manual

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29Table L: Venting Category Requirements6. DO NOT terminate vent closer than 5 ft below roofoverhang.7. The vent terminal requires a 12 in. vent terminalclearance from the wall.8. Terminate vent at least 1 ft above grade, includingnormal snow line.9. Multiple direct vent installations require a 4 ftclearance between the ends of vent caps locatedon the same horizontal plane.CombustionAir SupplyExhaustConfigurationHeater VentingCategoryCertifiedMaterialsCombustion AirInlet MaterialVerticalVentingFrom Inside Building(Non-Direct Venting) Horizontal Through-the-Wall VentingVerticalVentingFrom Outside Building(Direct Venting) Horizontal Through-the-Wall VentingIVCAT IV(AL29-4C)PVCCPVCPolypropylene* Galvanized SteelPVCABSCPVC* Only Centrotherm polypropylene material is approved for use with the XTherm.Canadian InstallationsRefer to latest edition of the B149 Installation Code.A vent shall not terminate:1. Directly above a paved sidewalk or drivewaywhich is located between two single-family dwell-ings and serves both dwellings.2. Less than 7 ft (2.13 m) above a paved sidewalk orpaved driveway located on public property.3. Within 6 ft (1.8 m) of a mechanical air supply inletto any building.4. Above a meter/regulator assembly within 3 ft (915mm) horizontally of the vertical centre-line of theregulator.5. Within 6 ft (1.8 m) of any gas service regulatorvent outlet.6. Less than 1 ft (305 mm) above grade level.7. Within 3 ft (915 mm) of a window or door whichcan be opened in any building, any non-mechani-cal air supply inlet to any building or thecombustion air inlet of any other appliance.8. Underneath a verandah, porch or deck, unless theverandah, porch or deck is fully open on a mini-mum of two sides beneath the floor, and thedistance between the top of the vent terminationand the underside of the verandah, porch or deckis greater than 1 ft (305 mm).WARNING: The Commonwealth of Massachusettsrequires that sidewall vented heaters, installed inevery dwelling, building or structure used in whole orin part for residential purposes, be installed usingspecial provisions as outlined on page 54 of thismanual.