Hi,

I noticed that the flames on our boiler had some orange 'bits'. The
flames are mostly blue, there are just a few orange ones mixed in.
The boiler hasnt been serviced for a long time (at least five years!)
so I called the local plumber (corgi registered) and asked him to come
and service it (I mentioned the flames). he did the business but the
flames are still the same. I asked him about it and he said that it
was working perfectly well and it was quite normal. is this the
case? should there by any orange 'bits' in there? Sorry for lack of
technical speak.

Thanks

Alan