Mechanical · M-H9TGF

Mechanical Rooftop Unit Installation

Elements

Roofs Drainage Site / Paving Connections / Plates Roof / Floor Openings

About this detail

A rooftop unit rests on a filter curb with access, accompanied by gas piping supplied by the plumbing contractor featuring a full-size cutoff valve, gas regulator, union, and reducer connected to the unit opening. All exposed gas pipe is painted with a minimum of two coats of weatherproof epoxy paint in a color specified by the architect. A condensate line with a minimum line size of one and one-quarter inches incorporates a condensate trap and slopes to the nearest roof drain, with a full-size vent and flashing provided per the roof manufacturer recommendations. Duct openings must be coordinated with structural prior to roughing in any ductwork, and smoke detectors are located in the return duct by electrical.

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