Hello Chaps,
My friend is having a new boiler fitted and the plumber has suggested to install a vaillant 630 due to a large house instead of a 624. Ground floor is about 85 sq meters of UFH and upstairs has 4 large double rads, and a hot water cylinder.
Currently the boiler is located in the loft which has a 22mm gas pipe going up from the ground, will the gas supply be sufficient for the 630 or will it need to be changed to a 28mm?
Thanks!
My friend is having a new boiler fitted and the plumber has suggested to install a vaillant 630 due to a large house instead of a 624. Ground floor is about 85 sq meters of UFH and upstairs has 4 large double rads, and a hot water cylinder.
Currently the boiler is located in the loft which has a 22mm gas pipe going up from the ground, will the gas supply be sufficient for the 630 or will it need to be changed to a 28mm?
Thanks!