An air conditioning unit sits level on a unit curb above a roof, connected to a copper condensate drain sized to the unit outlet. The drainage piping incorporates a four-inch external trap and a vent line with a sloped run. The plumbing contractor is responsible for the condensate drains while coordinating with the manufacturer for proper drainage requirements. Protection must be provided against ceiling damage from condensate carryover problems.
AIR CONDITIONING UNIT COPPER CONDENSATE DRAIN UNIT OUTLET SIZE VENT SLOPE UNIT CURB ROOF INSTALL A/C UNIT LEVEL NOTE: 1. CONTACT A/C MANUFACTURER FOR PROPER CONDENSATE DRAINAGE. PROVIDE EXTERNAL TRAP IF NOT INTERNAL TO UNIT. THIS CONTRACTOR IS RESPONSIBLE FOR ANY DAMAGE THAT OCCURS TO THE SHEETROCK CEILING DUE TO CONDENSATE CARRYOVER PROBLEMS. 2. PLUMBING CONTRACTOR IS RESPONSIBLE FOR CONDENSATE DRAINS. 4" TRAP
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