15mm cold feed

[CAESAR32]

Is a 15 mm cold feed enough for a house run of a combi with a bathroom and.suite. As long as there is enough pressure. Obv. Feed off 25mm mdpe

 

[dilalio]

I know you're in a hurry but... take a deep breath and describe in more detail.

 

[CAESAR32]

Sorry just a standard house with a combi boiler. The house has a bathroom and small ensuite. Is a 15mm cold supply enough for this. The incoming supply is 25mm mdpe. Do you need to know pressure etc?

 

[dilalio]

We're in process of doing much the same right now... New main into house from utilities stopcock is 32mm mdpe, this reduces to 25mm mdpe internally to internal stopcock; from there to combi is 22mm copper but this T's off to boiler, bathroom, kitchen and downstairs wc in 15mm. With a combi a smaller bore is better as long as you have good pressure and dynamic flow.