thescruff wrote on Jan 28th, 2014, 11:02pm:Does it smell when its off or running.
Is there a vent on the tiger loop that maybe the problem.
Check the lines otherwise for staining, brown papers good for finding leaks.
Was suggested the burner doesn't shut down fully and you get a spillage in the CC which smell when it starts up.
It doesn't seem to make much difference,as to it running or not, as to when it smells, it seems to be pretty constant.
The tiger loop has a copper vent which they have run outside.
The brown paper is a good idea and I will get onto that today.
I think the WB engineer mentioned about something about the burner and as far as I know he replaced the potentially problematic parts.
Thanks for your help I'll have a go with the brown paper and see if that shows anything.