This is what you need to do phil wessex flange in the top of the cylinder one hot connection to the pump the other to the house hot supply, hot out the pump to your shower , a cold supply from the storage tank in the loft into the pump, a cold out of the pump to your shower fitted like this before and after pictures. This much the same as you have not a five minute job bud took me day and a half materials and labour look to pay £750+ if you get someone in cheers kop
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Thanks very much for taking the time to post the above. I am guessing our houses were built by the same builders such is the similarity. The shower itself is already in with a cold water supply from the loft so I think i would just need a single pipe pump for the hot. I agree it is a swine of a job! Weighing up just using it as a second shower as you can shower in it, against the time and expense.
Thanks again.