You can see in the picture that the 22mm is reduced to 15mm going into the boiler, so do I only need to replace the small bit of 15mm to a 22mm?
Basically a 22mm gas pipe goes to the boiler and has t junction, which has 30cm of 15mm pipe going into boiler and the other 15mm going to the...
Basically I have main combi 24kw and I am replacing it with a baxi duo tec 24 kW.
The gas pipe is 22mm and the last 30cm of it going into the boiler is reduced to a 15mm, and my plumber said it needs to be replaced to a 22mm, why would he say this when the pipe is 22mm and only a bit of it is 15mm?
Basically I a 22mm gas pipe running from the mains all the way through to the boiler, however when the gas pipe goes to into the boiler it is reduced from a 22mm to a 15mm? (about 30cm of 15mm pipes goes into the boiler)
My question is why would a 22mm gas pipe be reduced to a 15mm going into...