I have a wood burner in my house in Spain. It has an oven type thing on the top. I'm going to make my own copper coil to run around the top and then go through the house to run 7 radiators. I was going to put in a small header tank and pump the water round to heat the rads. Do you think the water will get hot enough to heat the rads or maybe even too hot. Any ideas welcome. Just thought I would try this before I took the plunge and buy a bio mass boiler.