Oil boiler install queries

[julianf]

Im going to finally get around to doing this. We have been here 8 years or something, so its about time.

Modern condensing oil boiler. Grant vortex something or other, not that it makes a difference to the question -


3 'vent' pipes needed -

a) the vent from the tigerloop (internal version)
b) the vent from the overpressure (boiler / cylinder coil / pressure vessel are all sealed)
c) distillate drain


Can i do all of these in flexible 15mm PEX pipe? I mean, im pretty certain i can do the overpressure, not so sure about the distillate drain, although its only mildly acidic, and that PEX stuff is near indestructible, but im not so sure about the tigerloop vent. I think some of the underground oil line is PEX (the green stuff) so im thinking its probably absolutely fine, but if anyone knows with certainty, id be keen to know.

Oil feed is in that plastic coated copper stuff. 10mm, i think (i bought the roll ages ago).

 

[Kayos]

A copper
B copper or temp rated abs plastic (shouldn't be touching the cylinder discharge if not qualified)
C plastic, doesn't matter what as long as its uv rated if external and the correct size

 

[julianf]

Thank you.

It's a vented cylinder, not sealed. It's only the low volume boiler coil that's sealed.

 

[Kayos]

Thank you.

It's a vented cylinder, not sealed. It's only the low volume boiler coil that's sealed.

Fair enough, usual to do in copper or if you use something like a hot tun you can go to waste pipe type plastic, not allowed to use 15 or 22mm plastic