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Subject Topic: Ultrastore drain valve hot or cold
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01/10/2012 at 6:41pm
 Location: Essex
 Outfit: Bailey Orion 440 4
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Hi should the Truma Ultrastore drain valve be fitted to the hot or cold side?

We have been having problems with our 2012 Truma Ultrastore fitted to our caravan. The hot water flow from the taps has always been slow. Then lately the boiler would not completely fill or prime. The pump will cutout then when a tap is opened it will just spit and splutter then the pump would come back on with no tap flow.
Upon investigation i found the flexible hose between the hot outlet and the drain valve was kinked due to a tight bend and the heat of the pipe. When the kink was straightened the tap flow increased and the boiler primed properly.

But now thinking about it if the drain valve is on the hot outlet which is higher than the cold inlet. Then surely the boiler is not being completely drained when the drain valve is opened.
Should the drain valve be on hot water outlet?
Thanks

Post last edited on 01/10/2012 19:01:57


01/10/2012 at 7:22pm
 Location: North Lincs
 Outfit: Self Build PVC
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It should be on the cold water feed pipe just before it is connected to the Truma and below the level of the  connection.

Mike



01/10/2012 at 7:58pm
 Location: None Entered
 Outfit: Coachman Pastiche
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The hot side will come from the top of the tank as heat rises, so the drain should go on the bottom which will be the cold inlet side.


01/10/2012 at 9:52pm
 Location: Lancashire
 Outfit: Caravan now Sold
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may help



-------------
the only silly question is the one you do not ask.


01/10/2012 at 11:31pm
 Location: Essex
 Outfit: Bailey Orion 440 4
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Thanks for that.
Our caravan is in storage so i will have to double check it and take photos next time we go.
If i was mistaken about the valve being on the hot outlet would there be any reason for the cold feed pipe being red hot?


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02/10/2012 at 7:24am
 Location: None Entered
 Outfit: Coachman Pastiche
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Could be that the heater is plumbed in backwards. You would still get hot water if it was but it would run cold quite quickly.


02/10/2012 at 2:20pm
 Location: Lancashire
 Outfit: Caravan now Sold
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running hot on the cold pipe could be a non return valve fault ie.draining back into the barrel.this makes the tap operation poor.the taps can splutter or take a time to come (delay) on or not have the same force leaving the tap .see old truma email.

TRUMA
Park Lane, Dove Valley Park
Foston, Derbyshire, DE65 5BG
Truma Service/Technical 01283 586020
Lines open 8.30am - 5.00pm Mon - Thur, 8.30am - 1.30pm Fri
Dear Sir
The non return valve would be located somewhere on the cold feed to the boiler, the water sounds as if it is backfeeding into the aquaroll and the non return valve will need replacing.
Kind Regards
Nicki Price
Truma Service




Post last edited on 02/10/2012 14:48:05

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the only silly question is the one you do not ask.



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