Plumbing · P-2FT45

Air Conditioner Condensate Drain Piping and Trap Detail

Materials

Steel Metal (misc.)

Elements

Ceilings Drainage Connections / Plates

Connections

Welded Connection

About this detail

An air conditioner unit connects via a metal braided bronze flexible hose with welded ends to a Type L copper condensate trap assembly. A threaded brass cleanout plug tops the vent, while a screwed clean-out plug is located at the bottom of the trap. The primary drain line slopes a minimum of 1/8 inch per foot toward an approved receptor, utilizing brass and dielectric unions where steel meets copper. A secondary overflow drain pan runs beneath the A/C unit, maintaining a minimum 6-inch clearance above the ceiling and terminating at an observable location with a chrome escutcheon plate. Exposed copper piping below the ceiling is painted to match the ceiling color, coordinated with the architect.

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