Curious case of the toilet flush

[Nick the Tent]

Hi
Have been racking my ever diminishing set of brain cells as to why this should be, can't figure it out. Hoping some on can shed some light...
Toilet flush has only every gone, at best half way around the bowl, however when the water heater is on, it completes one circuit. I mentioned this to Rob at Tourer tech near Worcester the other day and he was stumped. I then heated up the water and stuck my hand in the toilet to check and it was hot water!
Have no idea whats going on and how to check.
Thanks

Nick
2008 Burstner Marano

 

[Baggydave]

Hi
Have been racking my ever diminishing set of brain cells as to why this should be, can't figure it out. Hoping some on can shed some light...
Toilet flush has only every gone, at best half way around the bowl, however when the water heater is on, it completes one circuit. I mentioned this to Rob at Tourer tech near Worcester the other day and he was stumped. I then heated up the water and stuck my hand in the toilet to check and it was hot water!
Have no idea whats going on and how to check.
Thanks

Nick
2008 Burstner Marano

Hot water would increase pressure in system because of expansion. Now why it’s connected to your loo is another question. Previous owner perhaps?

 

[B+W vanman]

Hi
Have been racking my ever diminishing set of brain cells as to why this should be, can't figure it out. Hoping some on can shed some light...
Toilet flush has only every gone, at best half way around the bowl, however when the water heater is on, it completes one circuit. I mentioned this to Rob at Tourer tech near Worcester the other day and he was stumped. I then heated up the water and stuck my hand in the toilet to check and it was hot water!
Have no idea whats going on and how to check.
Thanks

Nick
2008 Burstner Marano

Hot flushes are often associated with the menopause
I have no further comment at this time……..

 

[Salty Seas]

Hi Nick, First off I would think the water travels further because when it is heated it may be under more pressure, think of a kettle and steam. Secondly if its hot then the water is being fed from the hot water pipe and not the cold, which sounds as if it is a plumbing cock up. You need to get it addressed as the hot water MAY eventually make the toilet internal pipes or even the bowl brittle. Good Luck

 

[TheMobileWanderer]

Hi
Have been racking my ever diminishing set of brain cells as to why this should be, can't figure it out. Hoping some on can shed some light...
Toilet flush has only every gone, at best half way around the bowl, however when the water heater is on, it completes one circuit. I mentioned this to Rob at Tourer tech near Worcester the other day and he was stumped. I then heated up the water and stuck my hand in the toilet to check and it was hot water!
Have no idea whats going on and how to check.
Thanks

Nick
2008 Burstner Marano

Reading only the title, I wondered if there was reddening of skin or curry, recently involved.

I'm not sure whether your question is about a potential plumbing cock-up or about why hot water swirls better than cold.

So: why is the water hot?
Well in a diagram I saw recently, when looking for tanks and on a site of the retailer, I'm not surprised.
Wrongly; the feed to the hot, branches off from the cold feed and goes through a non-return valve and, then, to the heater. Onwards from there to the hot taps.

However, with no little knowledge of plumbing, if the heater has been on for some long time eg with a solar dump, the heat can transfer through a non-return valve and into the cold supply. Have a feel of your cold tank when you notice this hot water in toilet issue again.

My solution was to have a separate storage for hot water, which couldn't back-feed to the cold.
However, now, I am mulling over the prospect of using hot water in the toilet, deliberately, (it's ceramic) as it may function better both to swirl and to ensure breakdown in the black tank.

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[B+W vanman]

Reading only the title, I wondered if there was reddening of skin or curry, recently involved.

I'm not sure whether your question is about a potential plumbing cock-up or about why hot water swirls better than cold.

So: why is the water hot?
Well in a diagram I saw recently, when looking for tanks and on a site of the retailer, I'm not surprised.
Wrongly; the feed to the hot, branches off from the cold feed and goes through a non-return valve and, then, to the heater. Onwards from there to the hot taps.

However, with no little knowledge of plumbing, if the heater has been on for some long time eg with a solar dump, the heat can transfer through a non-return valve and into the cold supply. Have a feel of your cold tank when you notice this hot water in toilet issue again.

My solution was to have a separate storage for hot water, which couldn't back-feed to the cold.
However, now, I am mulling over the prospect of using hot water in the toilet, deliberately, (it's ceramic) as it may function better both to swirl and to ensure breakdown in the black tank.

Wee is warm, as are jobbies, if we’re thinking about black tank/cassette temperature……

 

[Nick the Tent]

thanks for your replies, I think I'll leave sleeping Logs err I mean Dogs, lie...

 

[jumar]

If you do work it out please let me know, I want my loo flushing with hot water also....sounds like the next conversion for the van.

 

[lorger]

When you say hot do you mean loop warm or hot, could the pipe be routed near boiler. I would drain the boiler then see if the loo still flushes, at least then you’ll know where the flush is fed from for future issues.

 

[Geistguy]

Our flush uses water from the main water tank, when the heating has been on it also heats the water from the hot taps, this is part of the design. Could your flush somehow be drawing water from the boiler ?

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[SwissBob]

Ours also does that. I assumed it was by design. The cassette compartment is also warm when the heating is on.

 

[PrettyandFluffy]

Our cold water tank is close to the boiler, when the boiler is on for a while (e.g. when using the heating in winter) the cold water becomes warm. Perhaps just the water in the pipes because if you run it you can get cold water.

 

[Jackdog]

Cold water has a slightly higher surface tension than hot water. I guess this causes it to slow down when in contact with the toilet bowl ?

 

[68c]

One of the first things I did with our van was to disconnect the water feed to the loo and fit a10ltre tank and seperate pump. Now can use the pink fluid and do not have to have any water in the main tank over winter. Also nervous about bugs making their way back to the main tank.

 

[boaterkeith]

Previous owner converted it to a bidet?

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[TobyQuest]

Lool, are these toilets supposed to flush?!
Ive been using mine like a box with a cover lol

 

[Nick the Tent]

One of the first things I did with our van was to disconnect the water feed to the loo and fit a10ltre tank and seperate pump. Now can use the pink fluid and do not have to have any water in the main tank over winter. Also nervous about bugs making their way back to the main tank.

That’s a good idea, I’ll put it on the list.

 

[JoshnPen]

One of the first things I did with our van was to disconnect the water feed to the loo and fit a10ltre tank and seperate pump. Now can use the pink fluid and do not have to have any water in the main tank over winter. Also nervous about bugs making their way back to the main tank.

Our van is sufficiently old to already have a separate 10l flush tank which we put a cap full of zoflora in on each fill.