How do you stop truma dump valve from opening in cold

[rontaylor]

Have a 2012 hobby Toscana 650. Found it has the usual truma dump valve prob. How do I stop from dumping water in minus deg so I can fill tank

 

[simon bocock]

Have a 2012 hobby Toscana 650. Found it has the usual truma dump valve prob. How do I stop from dumping water in minus deg so I can fill tank

Tie it up so it can’t dump . Mine has been tied up for years , home and abroad , in all extreme weathers , no problem . Over the top German safety precaution .

 

[wyliecyotee]

It’s there for a reason, I had no water in mine a few years ago and the water heater was on and it blew the element £500 to replace it . Do make sure your water heater is off

 

[Dorwyn]

On continental vans it's a standard fitting UK vans it's optional.
You should be able to just replace the manual dump valve,, if there is a non return valve in line with the boiler it needs to be on the boiler side of the valve.

View attachment 696264

Thanks for that. It's a strange omission on UK van's, it's not like there's somewhere in the UK it never freezes!

 

[Sandyt]

This is the solution if your boiler is the Truma Combi. It only needs the control panel to be switched on, no heating is required to be on!

Truma Frost Control Element

SKU: 70070-01 TRUMA FROST CONTROL ELEMENT

www.justcaravanparts.co.uk

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[simon bocock]

It’s there for a reason, I had no water in mine a few years ago and the water heater was on and it blew the element £500 to replace it . Do make sure your water heater is off

Obviously !

 

[Caggsie1]

First van a dethleffs, used 5p underneath the pull-up valve. With our hobby, I don’t think we used anything and it never dumped. We did have heated garage and heating was on, overnight heating would be off but used a small 650w oil filled radiator. Kept the worst of the weather out without drying out your nose. Always had window on snip also. We used van all year.

 

[Rong]

Have a 2012 hobby Toscana 650. Found it has the usual truma dump valve prob. How do I stop from dumping water in minus deg so I can fill tank

If your set up has a drain pipe under the van then a “Hep

Have a 2012 hobby Toscana 650. Found it has the usual truma dump valve prob. How do I stop from dumping water in minus deg so I can fill tank

If you have a pipe on the drain under the van then a push fit “Hep2O” isolation valve will fit
Obviously remember to open if van is laid up or the truma will freeze but is ok when there’s residual heat in the van, just stops nuisance dumpingm

 

[solaris]

If you put a valve in the dump valve pipe under the van remember to have it open in hot temperatures as the Truma will want to relieve pressure in high temperatures and the water will find the next weakest link. And how do I know?

 

[solaris]

When my automatic dump valve opened last year only a litre of water was dumped (it had worked fine till then). Thought valve was problem so replaced with a manual valve, having seen cost. Still have same problem have tried taps open whilst driving around and all other helpful advice etc. now have acquired a Floe kit but in this weather not the inclination to fit it so relying on oil filled radiator. Aren’t vans great fun

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[Widge]

Strange, I thought they were powered permanently, whether your 12 volts was turned on or not ?

It is on mine, totaly confused me when the water dumped on me, when i accidentally blew the fuse on the fridge igniter circuit, which was on the same fuse.

But is it normal not to have some sort of shutoff valve on the water feed to the boiler. I dont mind the boiler dumping, but if i then try and use the cold water in the sink or toilet by starting the pump, it just empties out under the van.

 

[Figaro]

It is on mine, totaly confused me when the water dumped on me, when i accidentally blew the fuse on the fridge igniter circuit, which was on the same fuse.

But is it normal not to have some sort of shutoff valve on the water feed to the boiler. I dont mind the boiler dumping, but if i then try and use the cold water in the sink or toilet by starting the pump, it just empties out under the van.

Yep, that's what happens on mine to. But if it's cold enough for the valve to open it's cold enough to need the heating on so problem solved.

 

[Widge]

Yep, that's what happens on mine to. But if it's cold enough for the valve to open it's cold enough to need the heating on so problem solved.

That's fine if you are parked up, but it dumped on us when we were out for a sunday drive the other weekend, which then meant we couldn't use the toilet.

My wife is partially handicapped so we often use the van even if we are out on a days shopping trip, the toilet is handy for her, (and me) also she needs to put her legs up for an hour or so after lunch, so it is much more convenient for her in the van.

But we dont want to put the gas on and get the heating going just to flush the toilet.
I understand the need to be cautious with the boiler, but i cannot imagine having any problem with the rest of the water system, as long as the tempreture didn’t go below freezing.

 

[Lenny HB]

But we dont want to put the gas on and get the heating going just to flush the toilet.

Carry a small water container for washing hands and making a cupper and a spray bottle to flush the loo.