misinformation
- Vote on answer
- posted
19 years ago
Mains pressure to Cylinder
Loading thread data ...
- Vote on answer
- posted
19 years ago
It would not.
I would put a pressure reducer at the main stop c*ck
I would stand well back.
Its more drivel from the village idiot Andy.
Either you are running at above atmospheric, in whch case its not a mains pressures system, ort you are, in wghich case all the regulations concerning pressurised hot water systems apply.
I have no idea what bit of glossy brchure dIMM wit has failed to half understand this time, but its the usual drivel.
- Vote on answer
- posted
19 years ago
That doesn't work DiMMwiT.
- Vote on answer
- posted
19 years ago
misIMMformed
Like I said, ignore him. It's a lunatic scheme, prohibited by the water byelaws.
The answer is no, don't waste any more time thinking any further about it.
- Vote on answer
- posted
19 years ago
More misinformation.
- Vote on answer
- posted
19 years ago
You said get an unvented cylinder when two superior solutions were given. sad but true.
- Vote on answer
- posted
19 years ago
< more babble and misinformation>
- Vote on answer
- posted
19 years ago
Not very fail-safe then is it? The consequences of somebody closing off the vented outlet would be pretty serious.
A heatbank with integral feed tank would meet these criteria without the limitations and potential dangers.
Good quality pumps are neither noisy no temperamental. "Expensive" is a relative term.
- Vote on answer
- posted
19 years ago
I have just viewed a "Show House" on a new build.
The central heating system had two pressure vessels plumbed into the hot water system in addition the to hot water storage tank (one red and one white if that makes a difference). The sales lady told me these were devices intended increase to hot water pressure to the showers above what which you would normally get from just an attic mounted header tank.
Don't know if the system still had a header tank, must ask next time.
- Vote on answer
- posted
19 years ago
Read the question I was answering!!
The OP wanted to replace his cold header tank with a *direct* mains input to the cylinder.
That is *not* what you are suggesting.
Your system *might* work - but greatly complicates the pipework between the cylinder and tap. However, it has TWO major flaws:
- If you are to be believed, it supports only *one* tap. How is the poor sod supposed to get to hot water to the other taps. [Dountless he needs a combi?!]
- As others have pointed out, the expansion every time the cylinder heats will run to waste through your 'vented' tap. Not only is this wasteful of water and energy, it could also be dangerous if hot water spurts out when it is not expected.
- Vote on answer
- posted
19 years ago
Thanks For Thereplies.
Basically, Its Not Advisable To Use A Standard Foamed Cylinder On Main Pressure.
The Best Way Is To Use A Unvented Cylinder. I Believe These Are Quite Expensive Though - Approx £600?
Anybody Know Any Sites Showing Correct Instalation/schematic Of Pip Layouts/sketches
Cheer
-- pauliepie
- Vote on answer
- posted
19 years ago
Sounds like one for the CH and one for the DHW. They are pressure vessels and will not increase pressure. It looks like the cylinder was unvented. Check if a tank in the loft.
- Vote on answer
- posted
19 years ago
It can't be blocked, onl;y if someone plasy about with piping.
You really have no idea what you are on about. Sad but true.
- Vote on answer
- posted
19 years ago
Which could very easily happen.
Just many years of effective use of good quality shower pumps.....
I can appreciate that somebody who buys only on price would have difficulty with the concept.
- Vote on answer
- posted
19 years ago
That is their point
- Vote on answer
- posted
19 years ago
Good. So we're agreed that this was a silly and dangerous idea and we can forget all about it.......
- Vote on answer
- posted
19 years ago
What a dork!
It is not silly as it is in use right now. The vented taps are available and used with under sink units. Having a larger sinl;e pioint cylinder instead of a small tank is no more dangerous.
- Vote on answer
- posted
19 years ago
Of course it is. Why do you think that there are different Building Regulation safety requirements for sealed water systems of different capacities?
This may arrangement may be open vented if somebody doesn't defeat the tap, but becomes a very dangerous sealed one if they do.
- Vote on answer
- posted
19 years ago
It is not sealed!!!!!
How is anyone going to block up the faucet? You can say the same with a sealed heating system if someone puts a compression cap over the end of the blow-off pipe. Kids doing it for fun in the street. If all systems fail then "kaboom".
The faucet will not block. The only problem, and the same for undersink units, is that some idiot may change the vented tap for an unvented tap. But then he would be left with an unused pipe and an old tap with the pipe connections. That should tell him he has done something wrong. An idiot can make anything explode, and they do regularly.
The problem with these, as been mentioned, is the delayed reponse of the tap, and some water dripping with expansion. Fine in France then.
- Vote on answer
- posted
19 years ago
If you had read on, you would have seen that I didn't say that it was, only that it could become so under conditions that are not Darwinian.
This is not a common implementation, and it would be very easy for somebody simply to replace the tap.
This is hardly the same thing.
Probably best that you stop digging then....