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Old 11-19-2015, 12:12 PM   #1
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Aria OUT Dometic 320 IN

I was having all the same systemic problems with the electric Aria. Unti, we were just watching TV and the toilet started cycling ALL BY ITSELF! Open, flush, close, open, flush, close..... If I hadn't been here to shut it down, it would have filled the tank and overflowed! I decided it was time for a replacement. Went to the local RV store and bought the Dometic 320. Most of us that have changed out a toilet knows what happened next.... Flange is too high and it is glued on!
I had to drill the flange to match the holes in the Dometic. Lagged the toilet down to the flange. I have used plastic wedges to help level off, but the toilet still rocks.
What did you all do to remedy this? I am planning on replacing the current tile with laminate, which I believe is even thinner than the tile therefore leaving the toilet flange even higher. Thoughts? Thanks in advance.
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Old 11-19-2015, 05:14 PM   #2
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Had the same problem flange 180 off for the new toilet and too high to sit right. Priced all the parts to rebuild the old one found I could buy new cheaper from PPL in Houston. The problem with the repeated flushing is in the controller, the box with the telephone like cable unplug and clean contacts and make sure it's dry and it should work fine. I didn't think it was worth the effort to change flange and tile so replaced with a new one for around $500 from PPL 👙
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Old 11-25-2015, 12:17 PM   #3
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Hi,
Check to see if a Dometic mounting kit will help solve the problem of rocking, Camping World, Amazon check online
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Old 11-25-2015, 04:22 PM   #4
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When I pulled up my Aria, it wasn't even using the flange, just lag screws in the floor. The flange was there so used it and fit was good. I guess I would try to cut,grind old flange off and replace with new at correct height. I don't miss wondering if that noisy toilet was going to take off on it's own!
Good luck
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Old 11-25-2015, 04:43 PM   #5
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Don't know the PBT floor plan. I had to replace the flange when I removed the tile and extra OSB layer in my toilet closet. You are right the flange is glued to a 45*elbow then a straight section of pipe before elbowing into another 45* that dumps into the holding tank. The pipes were readily accessible by removing the cover that holds the LP cut-off switch. I cut mid-way in the straight section and replaced everything above it. if you have the same access it is not to hard of a job. Keep in mind they use ABS pipe instead of PVC. Don't know if I did a good job at describing this but if you can access your pipes the same way I think it will make sense to you when you see it.
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Old 11-27-2015, 05:16 PM   #6
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I tore out the Aria II POS back in March 2010 and replaced it with a Sealand Magnum Opus which has been trouble free since day one.

Whereas the Aria had to have three motor/seal units installed in the first 6 years that I owned the coach.

Since the flanges were different I cut out a section of the old higher Thetford one using a Dremel tool and glued in a new floor flange for the Sealand toilet.

I've been a Happy Camper for well over 5 years now!

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Old 01-23-2020, 10:55 PM   #7
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Dometic 320 Extra Base

Quote:
Originally Posted by NVMike View Post
I was having all the same systemic problems with the electric Aria. Unti, we were just watching TV and the toilet started cycling ALL BY ITSELF! Open, flush, close, open, flush, close..... If I hadn't been here to shut it down, it would have filled the tank and overflowed! I decided it was time for a replacement. Went to the local RV store and bought the Dometic 320. Most of us that have changed out a toilet knows what happened next.... Flange is too high and it is glued on!
I had to drill the flange to match the holes in the Dometic. Lagged the toilet down to the flange. I have used plastic wedges to help level off, but the toilet still rocks.
What did you all do to remedy this? I am planning on replacing the current tile with laminate, which I believe is even thinner than the tile therefore leaving the toilet flange even higher. Thoughts? Thanks in advance.
I changed out a Dometic 300 for a 320.The 320 was too high for the floor flange so I bought the $100 flat plastic “riser” from Amazon.When it was screwed down and all the silicone still sticking there was no more rockingThat didn’t last long.
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Old 01-24-2020, 05:08 AM   #8
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I had the same problem. I was lucky and directly under the toilet if I lifted that door (Propane tank door) there was a plastic panel held in by screws once. Once removed I had access to the bottom of the toilet plumbing which was a straight drop to the black tank. I had to cut the black ABS plumbing to remove the closet flange so I could take the 3/8" spacer out that was under the toilet flange. In doing so when I mocked up the Dometic 320 the toile flange was to low. I had to put the spacer in my lathe and cut it down some. After achieving the correct height it was just a matter of gluing everything together. I also had to piece in some tile so because whoever put the ARIA butchered the tile. It was a PITA to do everything but it was well worth the effort. After looking at how the ARIA was made to drain waste it was obvious it was a piss poor design to say the least. Just my opinion.
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Old 01-24-2020, 01:38 PM   #9
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I'think you will be happy with the 320 verses the Aria, I know we are. I didn't have to do anything to the flange got lucky I guess. I pulled out the noisy Aria added to water supply line and lag bolted the 320 to the floor done. It's rock solid no rocking, no shimming, no tile work. I did buy the low profile due to the ledge that Monaco used wanted feet to reach the floor Mine went out first week into a two month trip. We stopped at Camping World outside of Denver bought the 320 and went to a campground and done the swap took maybe an hour.
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Old 01-25-2020, 07:13 AM   #10
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Quote:
Originally Posted by mlh2013 View Post
I'think you will be happy with the 320 verses the Aria, I know we are. I didn't have to do anything to the flange got lucky I guess. I pulled out the noisy Aria added to water supply line and lag bolted the 320 to the floor done. It's rock solid no rocking, no shimming, no tile work. I did buy the low profile due to the ledge that Monaco used wanted feet to reach the floor Mine went out first week into a two month trip. We stopped at Camping World outside of Denver bought the 320 and went to a campground and done the swap took maybe an hour.
You must be a magician then.....lol. I could barely get a wrench on the nut underneath the foot valve to hold the toilet down.
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Old 01-25-2020, 11:20 AM   #11
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Quote:
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You must be a magician then.....lol. I could barely get a wrench on the nut underneath the foot valve to hold the toilet down.
I think a contortionist is a better way of putting it It is a tight space
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