Kitchen pros might help me with this first full kitchen redo for a client:
The dishwasher–I roughed in a ded. 15a circuit for it–but the unit is to be hardwired–what do I use to get from the box and it’s wiring to the unit? Can I go there with romex or does it need to be an armored cable of some type?
What am I looking for to plumb in the thing? I can take hot water from the adjacent sink base–what should I use to pipe it over and what connection is usually on bosch DW? I have pex and a crimping tool–or I can do copper. What’s the right way?
Drain seems pretty easy, but what is it with the air gap? I’ll ask the granite counter guy–he’ll know whether we need one or not, but what can I do to avoid this extra counter penetration?
Tips welcome.
Replies
I stuck a plug on mine. in case it has to be moved it can be easily removed.
I'm not a pro, but I've installed a few dishwashers. The romex doesn't need a box in the wall. Just bring it through a hole in the drywall near the floor and leave it extended at least 24". Better to leave it 30". When the machine is put in you will connect the romex directly to the connection box on the machine which is at the front of the machine and easily accessable while laying on the floor. Any excess wire just lays on the floor under the machine.
The air gap problem is solved by cutting a hole for the drain hose into the sink base as high as possible under the countertop. The drain hose that comes with the machine is long enough for this routing and the directions usually tell you to route it this way. The heighth provides the air gap.
Install a shutoff valve into your waterline under the sink. Cut a hole near the bottom of the sink base for the waterline to route under the dishwasher. I always use a shielded flex line from the shutoff to the dishwasher. This makes the installation alot easier than using copper or pex, and it allows you to move the machine around without causing a leak.
On my jobs they wire a pigtail to the dw so it can plug into an outlet behind the dw.
For the water connection we use no-burst¯ 3/8" dw supplies. The connection will be 3/8" ips female (usually) dw hookup kits come with an adapting 90.
I noticed in your profile that you're in Oregon----- Oregon does not use air gaps, they hook up directly to a branch tailpiece, or the disposer.
When I install a dishwasher (or a whole kitchen) we just coil up about 3-4 feet of romex. That way when the time comes you can pull the dw out without disconnecting the wire.
Same with the supply line. We install a shut off valve under the sink and run the supply into the dw hole.
Thanks guys.
Pat