Toilet install

[Routemaster]

Hi Guys.
Just bought a Dometic 320 toilet so before I start will the blue pipe bend over to fit the 320? Any one done this mod, we have a Thetford in the trailer now.
Den.

 

[Jesstruckn/Jesstalkn]

Yes I only needed a little bit of bend so i just heated the pex up with a heat gun. If you need more you can use a couple of 90° elbows.
Did you get the 320 with the spay nozzle. Definitely a must in my book. It really works good for cleaning the toilet and rinsing down stubborn toilet paper from time to time.

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[Routemaster]

Yes I did buy the one with the spray. I thought about putting a PEX Flair It tap ( would they fit the blue pipe) in the line so as to be able to turn off the water there rather than outside turn off.
Thanks.
Den.

 

[Jesstruckn/Jesstalkn]

1/2 pex
A sharkbite valve would work good for that.

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[RoadJunkie]

While you’re on this project, definitely put a shutoff valve on the supply line in the bathroom, Really comes in handy.

 

[MCTalley]

I put a shutoff and a couple 90's in my line when we switched to the 320. The cutoff is very handy when servicing the toilet seal.

 

[gasman]

The 1/2" Flare-it fittings will fit the blue pex.

 

[SLO]

The Dometic may have a different standoff distance (distance from center of flange to wall) than the Thetford. If it’s less that’s good. If it’s more then maybe not so good.


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[TravelTiger]

This is ours with a Sharkbite 90* and a Sharkbite cutoff valve added.


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[Garypowell]

Just like Travel Tiger I used a Sharkbite shut off valve but then transitioned into a standard house connection hose. Looped it around for the perfect fit.

Replaced my 310 this past week as the foot peddle broke off.

Bought the less expensive non-sprayer version and moved the vacuum breaker/sprayer over from the old unit.

 

[boatto5er]

We’re not replacing our 310 toilet, but are putting new flooring down in the bathroom. Does the toilet use a standard wax ring under it or is it just a rubber gasket?


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[jbeletti]

We’re not replacing our 310 toilet, but are putting new flooring down in the bathroom. Does the toilet use a standard wax ring under it or is it just a rubber gasket?


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Rubber gasket Gus.

Link to full mounting kit.

 

[boatto5er]

Thanks Jim!


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[Mrz]

Just like Travel Tiger I used a Sharkbite shut off valve but then transitioned into a standard house connection hose. Looped it around for the perfect fit.

Replaced my 310 this past week as the foot peddle broke off.

Bought the less expensive non-sprayer version and moved the vacuum breaker/sprayer over from the old unit.

So, 1/2" Shark Bite fittings fit the 1/2" Pex pipe?

 

[Jesstruckn/Jesstalkn]

So, 1/2" Shark Bite fittings fit the 1/2" Pex pipe?

Yes

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[Routemaster]

Guys.
Where is the low point to drain cold water please?
Den.

 

[danemayer]

Guys.
Where is the low point to drain cold water please?
Den.

Landmark doesn't have low point drains.

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[Routemaster]

I just have our 320 Dometic toilet to install and it will not fit in the space the Thetford dimensions from the back of toilet is 8 1/2ins to the bolt down holes and the Dometic is 10 3/4ins. Should I have to buy a different flange?

 

[SLO]

I just have our 320 Dometic toilet to install and it will not fit in the space the Thetford dimensions from the back of toilet is 8 1/2ins to the bolt down holes and the Dometic is 10 3/4ins. Should I have to buy a different flange?

You have the same upgrade I did on mine. Switched Thetford toilet for a 320. I don’t think my roughin dimensions were the same as you quoted. There was about an inch difference in the wall to toilet bolt dimensions on mine. I went behind the wall in the basement and cut the 3” toilet line. Glued up a 22 1/2° ABS fitting and a 22 1/2° street ABS fitting and a new SS closet flange. Attached this to the existing 3” ABS line which I just cut with a no-hub coupler. This gave me about an 1” offset. I wouldn’t suggest a offset closet flange, that is a last resort fix.


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[Routemaster]

You have the same upgrade I did on mine. Switched Thetford toilet for a 320. I don’t think my roughin dimensions were the same as you quoted. There was about an inch difference in the wall to toilet bolt dimensions on mine. I went behind the wall in the basement and cut the 3” toilet line. Glued up a 22 1/2° ABS fitting and a 22 1/2° street ABS fitting and a new SS closet flange. Attached this to the existing 3” ABS line which I just cut with a no-hub coupler. This gave me about an 1” offset. I wouldn’t suggest a offset closet flange, that is a last resort fix.


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Thanks Rick.
I will check it out.
Den.