IMC condensate disposal 307.2.1.1

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Johnhall30

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Here is the 2021 IMC section 307.2.1.1

307.2.1.1 CONDENSATE DISCHARGE. CHANGE FROM 2018-2021 CONDENSATE DRAINS SHALL NOT DIRECTLY CONNECT TO ANY PLUMBING DRAIN, WASTE OR VENT PIPE. CONDENSATE DRAINS SHALL NOT DISCHARGE INTO A PLUMBING FIXTURE OTHER THAN A FLOOR SINK, FLOOR DRAIN, TRENCH DRAIN, MOP SINK, HUB DRAIN, STANDPIPE, UTILITY SINK OR LAUNDRY SINK. CONDENSATE DRAIN CONNECTIONS TO A LAVATORY WYE BRANCH TAILPIECE OR TO A BATHTUB OVERFLOW PIPE SHALL NOT BE CONSIDERED AS DISCHARGING TO A PLUMBING FIXTURE. EXCEPT WHERE DISCHARGING TO GRADE OUTDOORS, THE POINT OF DISCHARGE OF CONDENSATE DRAINS SHALL BE LOCATED WITHIN THE SAME OCCUPANCY, TENANT SPACE OR DWELLING UNIT AS THE SOURCE OF THE CONDENSATE.


Does this mean that A/C condensate piping cannot terminate into the plumbing system, or there just has to be an air gap fitting at the termination?
 

Breplum

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No direct connection is the main thing for A/C condensate. Condensing furnace condensate from the heating side needs acid neutralizer.
Air gap is the primary thing necessary for plain condensate. So, must be above a p-trapped fixture or as it dictates into a wye on a lav drain. If that WYE is utilized, then always make sure there is a proper little trap and vent at the A/C condenser
 
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