V
VinnyD
Hi all. New boiler and heating cylinder going in. Ive just put a blue pipe in from the OSV to the main riser in the house. I wanted to fit a combi mate but was worried about pressure being reduced. I was advised to fit 2 in parallel which would ensure there was no issue on pressure. Someone else has since contradicted that statement. Anyone confirm or deny that will work from experience? Many Thanks.