hi guys, one is the thermostat (white) whats the red one View media item 14217
immersion components
- Thread starter cdel2005
- Start date
I'm not an expert by any means, but it's possibly a safety cutout (in case the thermostat fails closed and the temp keeps going up and up).
I do hope after what people said in one of your other threads that you're not planning on trying to make what's there work - the wiring is certainly well past any semblance of life, and given that it probably means the hot water system is as well!
I do hope after what people said in one of your other threads that you're not planning on trying to make what's there work - the wiring is certainly well past any semblance of life, and given that it probably means the hot water system is as well!
G
Goldberg
You have a top mounted dual immersion heater.
It has two elements, therefore it has two thermostats.
If both are in service, then you also have two isolator switches, or one isolator switch and one selector switch.
It has two elements, therefore it has two thermostats.
If both are in service, then you also have two isolator switches, or one isolator switch and one selector switch.
it's him again..
it's a knackered old Eco7 set up..
rip it all out and put in a new tank and pipework.. it's all a mess anyway...
it's a knackered old Eco7 set up..
rip it all out and put in a new tank and pipework.. it's all a mess anyway...
G
Goldberg
I hadn't realised that this member had posted several topics that are pretty much all the same.
I wish I hadn't wasted my time - he's not going to pay any attention. I'm now expecting a new topic asking WTF there are two elements.
I wish I hadn't wasted my time - he's not going to pay any attention. I'm now expecting a new topic asking WTF there are two elements.
K
kai
The OP does not realise that it's an obsolete type of immersion heater, no longer legal, where economy seven and daytime boost are combined in one twin element unit unit.
Modern economy seven systems have two 11 inch immersions installed on the SIDE of the tank, the lower being on economy seven feed, whilst the top on is the daytime boost supply.
The Obsolete type had safety and reliabilty problems, hence they were made illegal some years ago.
Modern economy seven systems have two 11 inch immersions installed on the SIDE of the tank, the lower being on economy seven feed, whilst the top on is the daytime boost supply.
The Obsolete type had safety and reliabilty problems, hence they were made illegal some years ago.
First I've heard about a twin element i/h being illegal!
If a certain manufactured component is unreliable naturally it would be withdrawn. But that surely wouldn't make the generic twin element illegal.
If a certain manufactured component is unreliable naturally it would be withdrawn. But that surely wouldn't make the generic twin element illegal.
G
Goldberg
It isn't obsolete.
There's nothing illegal about it.
He certainly realises that, because he's been told at least twice.
That's not true. You're describing a cylinder with side-mounted immersion heaters. There are tons of cylinders with top-mounted immersion heaters.
I've seen dual elements in flats that aren't particularly old, and I have one in stock for that reason.
Please state the legislation that makes them illegal.The Obsolete type had safety and reliabilty problems, hence they were made illegal some years ago.
Oh, and lol lol lol, apparently.
K
kai
In 2006, I tried to source a Dual Element immersion to replace a failed one in my cylinder - I tried WF's, Newey and Eyre, B&Q, Wickes, CEF, and Edmunson Electrical, and they all advised me that it was illegal to use such dual element immersions on an economy seven setup - that's why I had to replace the cylinder with a modern one with two side mount elements in it.
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Where the header tank is plastic one is now required to have a non auto reset cut out so if the thermostat fails the cut out will prevent the immersion heating up the water in the header tank to a point where it loses its rigidity and may fail and allow to water to cascade onto those below.
However with duel heat systems to prevent the flow of water in a back boiler could cause it to explode so the only safe method is to have a metal header tank. To allow the back boiler to trip the cut out for the immersion heater is not really a good idea so either a manual reset is required which does not need access to live parts or some other method to limit the temperature when solar or solid fuel heating is used.
Therefore you can still get thermostats without the cut out for use with those systems but normally they have to be to special order.
However with duel heat systems to prevent the flow of water in a back boiler could cause it to explode so the only safe method is to have a metal header tank. To allow the back boiler to trip the cut out for the immersion heater is not really a good idea so either a manual reset is required which does not need access to live parts or some other method to limit the temperature when solar or solid fuel heating is used.
Therefore you can still get thermostats without the cut out for use with those systems but normally they have to be to special order.
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Perhaps the unlawful bit they were referring to was an element without a safety cut-out?
G
Goldberg
What's it like to live in a world where you just guess at what's legal and illegal?
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What's it like to live in a world where you are so pompous and obviously look down your nose at everybody else?
I was merely suggesting that PERHAPS the reason the wholesalers and retailers were reluctant was because they were not keen to advise replacing a immersion set up not fitted with a safety cutout.
If that was wrong and I am barking up the wrong tree, then so be it.
I was merely suggesting that PERHAPS the reason the wholesalers and retailers were reluctant was because they were not keen to advise replacing a immersion set up not fitted with a safety cutout.
If that was wrong and I am barking up the wrong tree, then so be it.
G
Goldberg
You've taken that a bit personally 
I hadn't even read your post - I was referring to kai, who neatly sidestepped the question I posed.
In any case, it's not a matter of superiority or otherwise. If someone says "it's illegal" and I know perfectly well that it isn't, but am open-minded enough to believe that I might be wrong, what's wrong in asking for proof of it being illegal?
As far as retailers and wholesalers giving advice on matters of law and/or electrical safety, I've never found any of them to be either knowledgeable or accurate on either subject. But if they were lawyers or electricians then they wouldn't be working behind a trade counter...
I hadn't even read your post - I was referring to kai, who neatly sidestepped the question I posed.
In any case, it's not a matter of superiority or otherwise. If someone says "it's illegal" and I know perfectly well that it isn't, but am open-minded enough to believe that I might be wrong, what's wrong in asking for proof of it being illegal?
As far as retailers and wholesalers giving advice on matters of law and/or electrical safety, I've never found any of them to be either knowledgeable or accurate on either subject. But if they were lawyers or electricians then they wouldn't be working behind a trade counter...
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OK. I'm not too big to apologise: I thought your comment was aimed at me. You pompous ******. 
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