Tilo's LPG kit does not include Elbows! T pieces yes, inline joins yes, but not Elbows/90 degree right angles for joining the coolant pipes to vaporiser and hbv etc. The way mines done this is an omission in the kit ime.
So when installing mine I had to source some sharpish and B+Q obliged with some nylon efforts in their hardware section. Not automotive parts but they did the job...until about a week ago and one started to leak, spraying the the under side of the hbv with coolant. Proved with a pressure test.
Turns out the B+Q elbow had deformed to the shape of the flat internal side of the jubilee clip supplied with the kit, allowing it to leak by. It's taken 15 to 20k to leak, and I've replaced the jubilee clips with gm water pipe clips to give even pressure all round the hose on the another B+Q elbow I had spare.
All could have been avoided, maybe Lazydocker could update Tilo, if not too busy.?