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04-25-2021, 10:46 PM
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#1
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Senior Member
Brand: Thor Motor Coach
Model: Four Winds 31W
State: Texas
Posts: 335
THOR #22781
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Kitchen Sink Drain
We have a 2021 Thor Four Winds 31W, the kitchen sink drains very slow water stays near the sink drain.
The dealership said they modified per Thor techs but no improvement.
Any suggestions this would also be the piping design on a Chateau.
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04-25-2021, 11:25 PM
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#2
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Senior Member
Brand: Thor Motor Coach
Model: 2020 Magnitude SV34
State: Florida
Posts: 4,147
THOR #12751
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Does this problem happen with the slide both in and out... assuming the sink is on the slide?
Some of the Class C’s have this issue when the slide is in because the flexible tubing goong to the gray tank gets kinked / pinched.
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04-25-2021, 11:36 PM
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#3
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Senior Member
Brand: Redwood
Model: 36FB
State: Arizona
Posts: 1,766
THOR #3610
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It may be the angle of the picture, but it looks like the drain piping is the same level as the drain basket so it would drain slower than normal & you probably see standing water in the p trap looking into the sink.
Show a picture of the other end of that pipe to see if it could be lowered.
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Fulltimed 10+ years
Sold '13 Thor Redwood 36 FB
Traded '13 GMC Denali DRW D/A
Replacement undetermined
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04-25-2021, 11:54 PM
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#4
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Site Team
Brand: Entegra
Model: Accolade 37TS
State: South Dakota
Posts: 8,726
THOR #1469
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Quote:
Originally Posted by Travelin' Texans
It may be the angle of the picture, but it looks like the drain piping is the same level as the drain basket so it would drain slower than normal & you probably see standing water in the p trap looking into the sink.
Show a picture of the other end of that pipe to see if it could be lowered.
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Looks that way to me as well.
__________________
Dave
US Army (Ret)
2020 Entegra Accolade 37TS
2019 Jeep Grand Cherokee Trailhawk (Toad)
FMCA - F432054
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04-25-2021, 11:56 PM
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#5
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Site Team
Brand: Entegra
Model: Accolade 37TS
State: South Dakota
Posts: 8,726
THOR #1469
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Quote:
Originally Posted by Jim Wagner
We have a 2021 Thor Four Winds 31W, the kitchen sink drains very slow water stays near the sink drain.
The dealership said they modified per Thor techs but no improvement.
Any suggestions this would also be the piping design on a Chateau.
Attachment 30046
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Can you take a picture of the far end of the drain pipe? Wonder if they drilled a hole too high and it doesn't allow for correct flow.
__________________
Dave
US Army (Ret)
2020 Entegra Accolade 37TS
2019 Jeep Grand Cherokee Trailhawk (Toad)
FMCA - F432054
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04-26-2021, 12:03 AM
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#6
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Senior Member
Brand: Thor Motor Coach
Model: Four Winds 31W
State: Texas
Posts: 335
THOR #22781
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Sink Drain
Drains the same slide in or out. Drain is almost level with drain line.
Have about a quarter inch of pipe (down drain pipe) that could be reduced dealer said would not significantly make any improvement of a downward slop where line from sink goes to the down drain pipe.
Dealer indicated would require a major replumbing to correct, not warranty approved.
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04-26-2021, 12:05 AM
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#7
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Site Team
Brand: Entegra
Model: Accolade 37TS
State: South Dakota
Posts: 8,726
THOR #1469
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You might want to call Thor and talk to them yourself.
__________________
Dave
US Army (Ret)
2020 Entegra Accolade 37TS
2019 Jeep Grand Cherokee Trailhawk (Toad)
FMCA - F432054
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04-26-2021, 12:06 AM
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#8
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Senior Member
Brand: Thor Motor Coach
Model: Four Winds 31W
State: Texas
Posts: 335
THOR #22781
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Sink Drain
MH at dealership unable to take additional pictures at this time.
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04-26-2021, 12:08 AM
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#9
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Senior Member
Brand: Thor Motor Coach
Model: Four Winds 31W
State: Texas
Posts: 335
THOR #22781
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Sink Drain
Will follow up with Thor, thanks...
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04-26-2021, 03:04 AM
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#10
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Senior Member
Brand: Thor Motor Coach
State: Washington
Posts: 1,112
THOR #6433
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Quote:
Originally Posted by Travelin' Texans
It may be the angle of the picture, but it looks like the drain piping is the same level as the drain basket so it would drain slower than normal & you probably see standing water in the p trap looking into the sink.
Show a picture of the other end of that pipe to see if it could be lowered.
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I was thinking the same thing, looks like the drain pipe looks to be too high.
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04-26-2021, 12:14 PM
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#11
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Senior Member
Brand: Keystone
Model: Sprinter
State: Florida
Posts: 1,422
THOR #15553
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The horizontal drain must be below the bottom of the drain basket. Call a plumber.
__________________
2011 Keystone Sprinter 323BHS. Retired Master Electrician. All Motor Homes are RV's. All RV's are not Motor Homes.
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04-26-2021, 12:45 PM
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#12
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Senior Member
Brand: Thor Motor Coach
Model: Four Winds 31W
State: Texas
Posts: 335
THOR #22781
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Sink Drain
We have discussed getting a plumber, but since this is a new unit under two months old we were hoping Thor would resolve or approve a third party plumber.
This is a poor design hopefully not implemented in their production line for Four Winds and Chateau.
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05-01-2021, 06:49 PM
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#13
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Senior Member
Brand: Keystone
Model: Sprinter
State: Florida
Posts: 1,422
THOR #15553
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Quote:
Originally Posted by Jim Wagner
We have discussed getting a plumber, but since this is a new unit under two months old we were hoping Thor would resolve or approve a third party plumber.
This is a poor design hopefully not implemented in their production line for Four Winds and Chateau.
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Thor is gonna tell you to take it to a dealer. If you take it to the dealer you will not see it for six months. Handle it yourself in one afternoon.
__________________
2011 Keystone Sprinter 323BHS. Retired Master Electrician. All Motor Homes are RV's. All RV's are not Motor Homes.
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05-01-2021, 07:39 PM
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#14
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Junior Member
Brand: Thor Motor Coach
State: Pennsylvania
Posts: 11
THOR #18733
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Kitchen Sink Drain
2019 Chateau looks like it has the same drain configuration. Water drains but it is slow and we can see water in the trap when it is fully drained. Had our only local RV dealer (not a Thor dealer) look at it and they said it would be a big job to reconfigure.
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05-01-2021, 07:45 PM
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#15
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Senior Member
Brand: Keystone
Model: Sprinter
State: Florida
Posts: 1,422
THOR #15553
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Quote:
Originally Posted by Mike.Cunningham
2019 Chateau looks like it has the same drain configuration. Water drains but it is slow and we can see water in the trap when it is fully drained. Had our only local RV dealer (not a Thor dealer) look at it and they said it would be a big job to reconfigure.
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The P-trap will always have water in it. You should always see water in the trap. It is there to keep the tank smells out of the RV. The horizontal drain pipe is too high.
__________________
2011 Keystone Sprinter 323BHS. Retired Master Electrician. All Motor Homes are RV's. All RV's are not Motor Homes.
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05-01-2021, 08:20 PM
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#16
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Senior Member
Brand: Thor Motor Coach
Model: Four Winds 31W
State: Texas
Posts: 335
THOR #22781
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Sink Drain
Thanks. I would have hoped a better plumbing design would have been in place by now.
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05-01-2021, 08:32 PM
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#17
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I Think We're Lost!
Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 22,195
THOR #8860
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Quote:
Originally Posted by cavie
The P-trap will always have water in it. You should always see water in the trap. It is there to keep the tank smells out of the RV. The horizontal drain pipe is too high.
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Agree... that trap and horizontal should be lower...
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05-01-2021, 08:47 PM
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#18
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Senior Member
Brand: Thor Motor Coach
Model: Four Winds 31W
State: Texas
Posts: 335
THOR #22781
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Sink Drain
Agree...
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05-01-2021, 08:56 PM
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#19
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Junior Member
Brand: Thor Motor Coach
State: Pennsylvania
Posts: 11
THOR #18733
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Quote:
Originally Posted by cavie
The P-trap will always have water in it. You should always see water in the trap. It is there to keep the tank smells out of the RV. The horizontal drain pipe is too high.
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Definitely, having water in the p-trap is a good thing. I think what gets people concerned is being able to see the water in the trap because it is so high unlike a home sink there you can't see the water in the trap.
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05-02-2021, 02:00 AM
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#20
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Senior Member
Brand: Thor Motor Coach
State: California
Posts: 875
THOR #17478
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First check if the pipe vent is clear. Air must be behind water. The vent pipe on the roof needs to be open. Second if the pipe is horizontal and not sloping down, then it is an assembly/design error. All drain pipes need to slope 1/4 inch minimum up to three inches maximum per foot. So if there isn't at least 1/4 inch per foot, it was a assembly or design error.
__________________
2013 Thor Palazzo 33.2
2013 Honda CRV
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