Recent content by Biffy

I'm having to do more and more schematic drawing and have a big biomass submission to get out this week. anyone know of where I could get some appropriate clipart for powerpoint or word. Pumps, valves, PRV etc to speed things up its taking ages 'longhand' cheers

I've been working on a Potterton 80e which had a lot of problems (almost terminal!). The remaining problem is that the boiler has a really loud and alarming resonance in the casing when the calling for heating. It does not seem to be an issue when calling for DHW. I thought in terms...