10mm pipe to condensing boiler, Good or Bad idea.

[excited]

My boiler is mounted in the loft and the pipe run to the furthest hotwater tap which is also the most used is around 12 meters. Flow rate doesn't matter to much as its only filling the kitchen sink.  I was thinking of replacing the pipe run in a continuous 10mm length of copper with plenty of pipe insulation.

I'm guessing the boiler will still have a large enough flowrate to light ?.

Is there any problems i may have with this.


thanks

daz.

[chickensoup]

      Excited,
                 Your boiler has been engineered to heat a minimum/ maximum flow rate for optimum performance, as long as the flowrate is within these parameters then it will be fine, the minimum with combi's is approx 0.25bar and 2lm. You will find though that the hot water will be hotter if using 10mm as when the standing pressure in the hot pipe is suddenly released( when hot tap is opened ) the boiler will fire fully modulated and slowly modulate down to useable temp. Can i just asked why you want to replace with 10mm tube?

[excited]

It comes on a roll, Its basically a straight run with just a few bends to the boiler. So i can push on the insulation over the pipe once its in place and then just clip it. I think it will be easier than using 15mm and making some joints in places. The bends are pretty smooth and the 10mm pipe its quite forgiving, so even a ape like me should be able to install it without any kinks.

Do you think there is a easier better way.


thanks

daz.

[chickensoup]

 Why not 15mm coiled copper?

[excited]

Sorry forgot to say Also because 10mm will carry less water. IE I think there will be less water wastage while the boiler heats up.


thanks

daz

[chickensoup]

 Yeah makes sense, if you've a meter. Just don't pipe the bath up in it, you could watch an omnibus of a soap while waiting to fill.