Dedicated cold water feed for shower.

Simon Avery · 2003-12-01T14:15:14+00:00

Hello AllNewbie at plumbing, being stupid^Wbrave, fitting thermostatic shower with dedicated 22mm feeds from HW and CW tanks to twin-chamber shower pump. Need pointers on where to pickup feeds from.Bungalow, vented HW tank, large CW tank in loft. Standard stuff.HW I think I've got figured out. Using a Surrey Flange (or equivalent if I can get one to fit the unused immersion tapping rather than messing with the existing HW out).CW I'm confused about. Currently the large CW tank has a single 22mm output - which goes straight to the HW tank input. There are no other outlets from this tank. (Ie, toilet and all taps are off rising main).Where is the best place to get my feed? Straight out the tank? I'm scared of fluffing up a connection here - is it easy or hard to make a good waterproof hole? It's a modern circular plastic tank and very large. (~50-100gallon, bigger than yer "normal" galvanised tank anyway)Or better to spur off the existing 22mm feed to the HWT? (I really want a good flow rate, would doing this throttle it down that much?)Also - shower pumps. As has been pointed out, I need some head to play with. Is this head, when taken from an indirect hot water tank, measured from the bottom of the tank or the top? Or even from the bottom of the CWT that feeds it?Thanks!

Dec 01, 2003 21 Replies

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Simon Avery 22 years ago

Hello Set

Understood, thanks.

Now - equipotential bonding with plastic pipes. Speedfit and Hep20 are pretty vague in a "it's not required since 1994" or somesuch, but to make sure - I don't need to bond the taps on a plastic bath, cistern, gravity shower or basin when using solely plastic pipes, right?

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Hepworth Plumbing Products Tea 22 years ago

There is a reprint of an article by Paul Cook of the IEE which gives guidance on earth and equipotential bonding when using plastic pipes such as Hep2O at:-

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Hepworth Plumbing Products Team

-- Tel: +44 (0)1709 856 300 |Hepworth Plumbing Products Fax: +44 (0)1709 856 301 |Edlington Lane, Edlington Email: snipped-for-privacy@hepworthplumbing.co.uk |Doncaster, UK

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|DN12 1BY

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