Sealed Unvented System


Postby Paul2463 » Sun Mar 01, 2009 4:05 pm

Hello Guys

I have just moved house which has a Glowworm 30sxi sealed system installed.

I wish to de-pressurise the system so I can "T" off the bath pipes and install a shower over the bath. When the system is not bleeding water all over the place my plumbing is not too bad and I am competant to carry out the work, what worries me is the pressure in the system.

Is there a simple tap that I use, then drain the remaining pressure. Or is it a convoluted shut down and restart system?
Paul2463
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Joined: Mon Mar 31, 2008 4:00 pm

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Postby rosebery » Sun Mar 01, 2009 9:55 pm

The installer should probably have left labels on all the valves.

More often than not you will find one labelled "hot and cold off". Just close that and you can work on your pipes quite happily without draining the cylinder.

Cheers
rosebery
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Joined: Wed Sep 26, 2007 8:55 pm


Postby Paul2463 » Tue Mar 03, 2009 6:47 am

Thanks Rosebery I will go and have a look to see if the installer did in fact mark up all the valves, he certainly left all theinstaller paperwork screwed up behind the cyclinder :lol:
Paul2463
Posts: 26
Joined: Mon Mar 31, 2008 4:00 pm


Postby rosebery » Fri Mar 06, 2009 8:54 pm

Well at least we can be grateful that he did. LoL.

Cheers
rosebery
Posts: 2022
Joined: Wed Sep 26, 2007 8:55 pm


Postby JG214 » Fri Mar 06, 2009 9:46 pm

Paul2463,

On an unvented sealed system - just by turning the ISV off under the sink (or where ever it is located) should stop all hot and cold water.
JG214
Posts: 4
Joined: Wed Mar 04, 2009 9:27 am


Postby Steve the gas » Sat Mar 07, 2009 4:42 am

Hi,

To reduce system pressure - bleed at any rad until no more water comes out.
Steve the gas
Posts: 780
Joined: Sun May 04, 2008 7:07 am


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