Hi,
I'm in the process of having my house totally re-plumbed and with the exception of the first 1 -2 meters of pipe from the boiler, the plumber has used 15mm pipe for the entire flow and return.
The plumber tells me the size is irrelevant now the systems are pressurized.
Is this true or should it be 22mm?
The boiler is a Worcester 30i combi with 8 radiators.
Thank you in anticipation.
I'm in the process of having my house totally re-plumbed and with the exception of the first 1 -2 meters of pipe from the boiler, the plumber has used 15mm pipe for the entire flow and return.
The plumber tells me the size is irrelevant now the systems are pressurized.
Is this true or should it be 22mm?
The boiler is a Worcester 30i combi with 8 radiators.
Thank you in anticipation.