Feeds to thermostatic shower

15 Sep 2010
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United Kingdom
I'm jut about to install a thermostatic shower in an upstairs bathroom. Gravity fed system and currently jst feeding a bath. The current pipes are a 22mm pipe running hot from the tank and a 15mm cold. There's over 4ft head from the loft tank to the shower head. To make life easy I'd planned to tee-off the hot and cold feeds to the bath straight to the shower.
Pressure is good from the current hot and cold water taps. What do I need to consider?
I've been told I have to run a 22mm pipe from the cold water tank to the bathroom which would be a pain in he proverbial. I'm not pumping the system.
Any tips?
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