Mechanical · M-2HTGK

Gas Unit Heater Detail

Materials

Elements

Beams Roofs Decks Waterproofing / Flashing Insulation Roof / Floor Openings

About this detail

A suspended gas unit heater hangs from the top chord of a steel joist using threaded rods and structural angle iron. The heater exhausts through a UL listed type vent pipe penetrating the roof assembly, which consists of a metal deck, rigid insulation, and roof membrane. The roof penetration is sealed with galvanized flashing provided by the mechanical contractor and membrane flashing provided by the roofing contractor, complete with a drawband, sealant, and a UL listed cap at the exterior. A gas supply line feeds the unit, including a gas pressure regulator, gas cock, and union.

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