maple1
Minister of Fire
You should have stuck with the one thread.
I suspect changing it will not help. You have been given some answers already (and seeming to be brushing over or ignoring them) - but the help you could get here is limited by the lack of details presented. Pictures would help to start - along with more data. Stack temps? Temps in & out of both boilers? Wood moisture content? Exact type of underground piping? What are you pumping with? Controls? Insulation?
But with the boiler you have, you are behind an 8-ball to start with.
I suspect changing it will not help. You have been given some answers already (and seeming to be brushing over or ignoring them) - but the help you could get here is limited by the lack of details presented. Pictures would help to start - along with more data. Stack temps? Temps in & out of both boilers? Wood moisture content? Exact type of underground piping? What are you pumping with? Controls? Insulation?
But with the boiler you have, you are behind an 8-ball to start with.