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Old 09-27-2014, 10:18 AM   #1
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DIY Washer prep, rough-in

I have scoured the internet to no avail to find a video or a detailed article on how to PLUMB your own RV Washing machine lines.

Please advise if someone should find one. Thanks.

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Old 09-27-2014, 10:36 AM   #2
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Not really any different than a house. A hot and a cold supply line, ending with standard hose thread and a shut-off valve, plus a 1.5" waste stand pipe with a P-trap at the bottom where it begins to travel horizontally to the gray tank. You also need a 120v/20A electrical supply and a standard dryer vent in the exterior wall nearby. The details will vary with your rig layout, of course.

If you plan to use a residential style stack set, you probably want to change the dryer over to 120v operation rather than 220v. 220v operation would be very restricting unless you always have 50A shore power and/or your RV generator is also capable of 220v/50A. Many are not, even though they do supply 50A power.

Gary Brinck
Former owner of 2004 American Tradition
Home is in the Ocala Nat'l Forest near Ocala, FL
Summers in Black Mountain, NC
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Old 09-27-2014, 10:53 AM   #3
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Gary, has laid out a rough idea of what's required, every brand of RV will have different issues and every floor plan will present it's own special problems. Was your RV ever offered with the option ?
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
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Old 09-27-2014, 11:04 AM   #4
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Originally Posted by KLHNB View Post
I have scoured the internet to no avail to find a video or a detailed article on how to PLUMB your own RV Washing machine lines.
Please advise if someone should find one. Thanks.
Here is a drawing of the washer drain plumbing as it is in my coach:

NOTE: The vertical "waste stack" extends up through the roof.
The pipes and the p-trap shown are 1 1/2" ABS, (black plastic).

'96 Safari
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