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www.ultimatehandyman.co.uk Forum Index -> Plumbing Forum
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CelticBhoy
Junior Member
Joined: 02 Sep 2007
Posts: 5
Location: London
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 Posted: Sun Sep 02, 2007 9:00 pm Post subject: Constant overflow drip with Heatrae Sadia Boiler |
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Hi,
I'm very green so please excuse mistakes etc. Also 'learner' advice would be much appreciated.
I've a Heatrae Sadia Megaflo in my flat. It only heats up the hot water as we have electric heaters in the place.
Recently I have noticed that cold water is constantly overflowing. I have drained the tank once, as directed on the tank, however had no joy.
What are the things that I should check for ?
Many thanks in advance |
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CelticBhoy
Junior Member
Joined: 02 Sep 2007
Posts: 5
Location: London
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| Posted: Sun Sep 02, 2007 9:11 pm Post subject: also ... |
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Is it a good idea to turn off the mains water when I am out of the flat and at night ?
I've heard that this can cause an air bubble ...and ultimately i would need to get a new boiler
Thanks again |
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ultimatehandyman
Site Admin
Joined: 16 Jul 2005
Posts: 9740
Location: Darwen, Lancashire
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| Posted: Sun Sep 02, 2007 9:34 pm Post subject: |
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Hinton heating is the man to answer this, but he may of retired until tomorrow 
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Hinton Heating
Gas/Heating Expert
Joined: 16 Jan 2006
Posts: 4296
Location: Bournemouth
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| Posted: Sun Sep 02, 2007 11:16 pm Post subject: |
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Nope, i've been out!
My guess is one of the safety valves is passing. This isn;t a DIY job, and you'll need to call only a plumber who is registered to work on unvented cylinders.
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CelticBhoy
Junior Member
Joined: 02 Sep 2007
Posts: 5
Location: London
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| Posted: Mon Sep 03, 2007 12:17 pm Post subject: Thanks |
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Guys,
Thanks for the advice. Re turing off the mains water at night and in the day ...should I do this or not ?
Cheers |
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Hinton Heating
Gas/Heating Expert
Joined: 16 Jan 2006
Posts: 4296
Location: Bournemouth
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| Posted: Mon Sep 03, 2007 4:54 pm Post subject: |
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I dont think turning off the mains will reduce the leakage, as you still need to releif the pressure within the cylinder.
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CelticBhoy
Junior Member
Joined: 02 Sep 2007
Posts: 5
Location: London
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| Posted: Mon Sep 03, 2007 5:57 pm Post subject: |
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| When I turn off the water supply, the overflow stops though ... |
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Hinton Heating
Gas/Heating Expert
Joined: 16 Jan 2006
Posts: 4296
Location: Bournemouth
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| Posted: Mon Sep 03, 2007 6:18 pm Post subject: |
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it will once the pressure is taken off.
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CelticBhoy
Junior Member
Joined: 02 Sep 2007
Posts: 5
Location: London
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| Posted: Tue Sep 04, 2007 9:35 am Post subject: |
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Thanks.
So is it a good idea to turn off the water supply when not in use ?
Also am being quoted £165 to have the PRV replaced ..does this seem sensible ?
Cheers |
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Hinton Heating
Gas/Heating Expert
Joined: 16 Jan 2006
Posts: 4296
Location: Bournemouth
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| Posted: Tue Sep 04, 2007 6:11 pm Post subject: |
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I'm not sure how much the PRV is, but i paid about £55+vat for one last week, but was for an obsolite unvented cylinder.
I'd phone Heatrae Sadia, for a part price...
Also ask the plumber for a breakdown of his costings, as seems a tad high.
Should only take 15mins to fit.
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