Valliant boiler VCW T3W - how do I increase pressure?

DougSussex · 14 Jun 2006

I've got a 15+ year old Valliant TCW T3W boiler. The pressure has dropped to below 0.5 and I need to top it up. A few years ago, I watched a plumber do this, but now I can't remember what he did! There are two taps on the pipes under the boiler - one looks like an outdoor hose tap, the other looks like a red octagon with "open" and "close" on it. I recall that it has something to do with opening/closing one or both of these taps. Can anyone help!!! Simple language please - plumbing is not my thing. Many thanks

ChrisR · 14 Jun 2006

In principle you just open both taps and let the pressure slowly rise to about 1 then close both taps.

But only of there's a flexy hose joining the taps together...

chrishutt · 14 Jun 2006

Look in the FAQ topic above.

DougSussex · 14 Jun 2006

Ok - I've opened both taps, but nothing happens - no sound of water flowing, nothing. Any suggestions?

ChrisR · 14 Jun 2006

suggestions

Plastic tap tab turning but not the metal bit underneath?

Agile · 15 Jun 2006

If there is a non return valve fitted as there should be then they often get bunged up with dirt.

You may need professional help!

Tony

maka2k2 · 15 Jun 2006

agree with Agile, you might even need a new non return valve, its not a big job for a professional

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Valliant boiler VCW T3W - how do I increase pressure?

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