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Author:
woodfor1 (NJ)
Hello when I built my new kitchen I put the dishwasher up about 20" above the floor and now the It dose not clean the dishes that good should there be an airgap on the drain pipe to prevent the water from siphoning out.
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Author:
bernabeu (SC)
the drain should rise at least 16" BEFORE discharging downwards
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"Measure Twice & Cut Once" - Retired U.A. Local 1 & 638
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Author:
hj (AZ)
Is the DISHWASHER or the drain hose 20" above the floor? If it is the DW itself, then the drain hose connection HAS to be lower than the machine which means it DOES need an air gap, but that has to be above the water level in the machine, which might be a problem depending on how the kitchen is arranged.
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Author:
bernabeu (SC)
yes hj, but, the drain line MUST loop up a minimum of 16" as per all makers (the loop is often, but not always, made integral on the machine's back side) in order to maintain a 'wet seal' w/o siphoning
this is not a code issue but a manufacturer's issue
the reason I know is that in my previous home built in the 50s I replaced the wall oven with a d/w and drained it indirect into my basement service sink ~ GE was kind enough to replace the new machine under warranty because the manual was 'vague' on this point
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"Measure Twice & Cut Once" - Retired U.A. Local 1 & 638
Edited 1 times.
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