I've installed a varispeed shower pump inthe airing cupboard below the hot tank. I've run the cold from the storage tank in 22mm pipe, the hot from the hot tank in 22mm also. When I open the shower mixer the pump comes on but I only get hot water, then the thermostatic valve closes to regulate the temp, and I get nothing. I've run the discharges in 15mm.
The hot flow energises the flow switch on the hot side, but does it also need a flow on the cold site to energise the cold side switch? Are the hot and cold pumps separate within the casing? I think the problem is that I've run the cold supply from the storage tank in the attic, down to the airing cupboard, but then back up to the attic again to tie-in to the old shower pipe to the bathroom, effectively reducing the head. Previously it was ok because the pipe came straight from the cold tank to the shower, travelling in the attic. Now I think I've reduced head by going back up to the attic to tie in to this line. Any ideas?
2007-04-18
20:18:27
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3 answers
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asked by
papparumbo
1