Post
by plumbbob »
Mon Dec 17, 2012 7:17 pm
You might be able to use the Surrey flange to feed the hot, but to be honest it wouldn't be the best idea probably. These flanges take the water further down from inside the tank so you don't actually draw the hottest water available. Also, if you are filling a shower bath, you need the maximum volume of water available and the fact it is taken part way down means you may run out of hot before the bath is full.
Next, you can't use a twin impeller pump to feed both the hot and cold to individual taps. These pumps are designed to supply water equally in a shower situation. In practice you may only be drawing off the hot side which would put undue strain on the pump because the cold is not flowing. It may result in the pump failing.
Also, the pump uses the flow of water to sense when to switch on. If one feed was off the pump may not run at all, or alternatively, it may keep switching on and off (hunting). It certainly wouldn't run correctly.