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Remodeling 05-21-2005 07:10 PM

Installing diswasher
What are the basics for putting a dishwasher in. I will need to remove some drawers but have the space under the kitchen counter. Is it just as easy as running hot water and electricity to it as well as a waste pipe?


MinConst 05-21-2005 08:43 PM

I would use a GFCI protected circuit. The waste pipe is a hose that runs into your existing sink drain into a Y. Most will heat the water for you so cold is all that is needed. Level, and solid and it will run quieter and stable.

Mike Swearingen 05-22-2005 12:10 AM

Check with your Building Inspection Department for local code and inspection and permit requirements for a dishwasher. Most usually call for a dedicated dw electrical circuit and an air gap.
It should have a dedicated 110v electrical circuit outlet (usually best put behind it). It normally doesn't have to be on a GFCI. If it ever trips a GFCI, and it's installed behind it instead of under the sink, you'll have to remove the dw from the cabinet to get to it to re-set it. The breaker should trip anyway if there's a problem.
If you're going to have to run a new circuit, I would run it off a 20 amp breaker with 12/2-with-ground wiring in case someone ever wanted to put in a heavy-duty dw. (Code and dw manufacturers usually just call for 15 amp with 14/2wg wire circuit.)
If you don't have a disposal with dw connection, you will have to install a new tailpiece with a dw "Y", preferably under the nearest side of the kitchen sink, for the drain hose connection. Loop the drain hose over the dw, either directly to the "Y" or above-the-sink air gap and then to the "Y" if an air gap is required.
If you have a disposal with a dw connection, don't forget to use a hammer and screwdriver to remove the plastic knock-out plug down in the disposal dw pipe before attaching the drain hose.
Check the particular dw for water connection instructions. Cold is O.K. on most new ones, but I always just connect mine to the hot water line. Whichever, use a separate dw water shut-off valve off of a "T" in the line to connect the dw supply line (may need to buy the supply line separately).
If you're ever planning on adding tile or a wood floor in the kitchen, now is a good time raise the cabinet base (shim up at least the thickness of the tile or flooring). If you install a dw in a cabinet base sitting on vinyl flooring and later someone adds tile for instance, it will trap the dw under the cabinet.
Good Luck!

Remodeling 05-22-2005 12:48 PM

Thanks for the info guys, that is about what I thought. My only hang-up is the dedicated circut, was hoping that it would be okay to tie into the kitchen wiring.


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