DIYbanter - View Single Post - Pipe joins and pipe sizing for heating oil

Michael Chare[_4_]

On 13/05/2021 09:31, wrote:
I need to re-route the pipe running between the oil tank and my 50kW
boiler. I see that inserts are now recommended in soft copper pipe to
prevent the pipe from distorting - but these reduce the bore of a 10mm
pipe from about 8.6mm to about 6mm. The boiler manual just gives max
pipe run info for 10mm (O/D) and I haven't been able to find any other
info. Any suggestions on where to find further info or how to do the
sums on the effect of a few (6 or 8) 6mm restrictions in an 8.6mm bore?

You might be able to find more info from Danfoss as they make many of
the pumps, or Reillo.

The manual for my Camray Heatslave boiler has details for 10mm and 12mm
OD pipe. The max pipe length depends on the head, i.e. how much the
bottom of the tank is above or below the oil pump. I used flare
fittings when I installed a new boiler some years ago now. It may be
that you can flare the end of the pipe before pushing it into its final
position. I recall bending my pipe round a small pulley wheel.

The new boiler came with compression joints for the oil supply flow and
return.

--
Michael Chare