OK; point taken. I promise not to shout at him next time he comes and finds he no longer has to entertain us by juggling lots of rubber tubing and buckets! :)
Thanks for all this, guys. The boiler is on an outside wall, so there's no problem taking the pipework straight down and then out.
I can believe the 3/4" fitting -- I tried a couple of straight-through compression fittings that I had to hand just to get a rough idea of its size and the 22mm...
Hi Guys,
I have a Vaillant VCW GB 242 E which has probably been installed for over 15 years. It all works fine but whoever installed it never bothered to plumb in the PRV outlet which is just set to discharge nicely (as in "not nicely at all") down the wall should it ever fire! Naturally...