Mechanical · M-D7VTJ

Pipe Diameter In Inches

Elements

Roofs Floors / Slabs Drainage Connections / Plates

About this detail

This diagram details an HVAC condensate drain trap piping arrangement connected to a drain pan, incorporating a union, removable plug caps, and an approved air gap above a local floor drain, roof drain, or floor sink. Vertical drop dimensions are governed by the fan inlet pressure plus one inch and half of that value. A companion equipment capacity chart specifies minimum condensate pipe diameters in inches for refrigeration capacities ranging from zero to two hundred fifty tons, assuming a one-eighth inch per foot slope. Condensate sizing for alternate slopes or conditions requires approval from the authority having jurisdiction.

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