Hi, I have just checked out my system, refilled it etc. and am now doing a bit of winter camping. But I have noticed that there is no circulation pump on top of the expansion tank. All the manuals I have show that there should be one. I do however, have a pump down by the boiler which I suspect is for the engine heat exchanger which I also have. My question is: do you think they did away with the expansion tank pump as they fitted the engine heat exchanger pump and this does both? Any-one with the same system, I would appeciate your views.
ken
ken