I am in the process of fitting a 50 gallon Coffin Tank to replace the 2 existing 25 Gallon tanks presently in use in the loft. Each of the 25 gallon tanks have seperate outlets, which are linked. I realise that one supply is for the hot water tank and the other is for the cold water supply. Having checked the cold water taps with the mains tap closed it would appear that the only tap fed by the cold water tank is the bath cold water, the rest being mains fed. Do I still need 2 outlets from the replacement tank to feed both system, or can I use one outlet and branch off to both feeds?