Dishwasher Standalone Drain Ok? [Alberta]

Discussion in 'Canadian Plumbing Code Questions' started by LooseNeutral, Aug 5, 2020.

  1. LooseNeutral

    LooseNeutral New Member

    Aug 5, 2020
    Alberta, Canada
    I have an imgur album here with details of the issue:

    To summarize, my dishwasher keeps burning out drain pumps. Currently drains to basement and back up to island sink. Single, monolithic hose is 18' from dishwasher to island sink wye connection - no splices. But still too much for any dishwasher's specs. I want to fix this problem once and for all, but don't need the Cadillac solution.

    Plumbers suggest installing new p-trap below floor (above ceiling tiles) feeding into the drain line coming from the sink, and run dishwasher drain hose direct into trap. Within a certain distance of a vent, no dedicated AAV or vent is needed, yes?

    I don't want to push it too far like with the current solution, but I also don't want it to become so easy to drain that I end up with a different problem like a siphon. Or sewage backflow.

    Just high loop it in the cabinet before routing it down again into the new p-trap?
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