Hi I have replaced my old external Camray Boiler with a nice new Grant 16/21. I had an OFTEC engineer come to commision the boiler and everything was OK but he said that the pipes coming from the Tiger Loop to the boiler had to be copper and not the flexible hosings I used for the life of me I can't work out why, but is he correct? The tiger loop is just underneath the boiler would it be possible to put the tiger loop in the boiler?
Cheers Pete
Cheers Pete