Hello All
Newbie 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!