Looking around the Tarm literature I can't find the number of fire tubes in the heat exchanger on the Solo Plus 30 (now Scantec). The Solo Plus 40 has 8, it looks like the big 60 has 12 (guessing from a diagram). I believe they are all 80mm tubes (just over 3").
Is my guess of 6 tubes correct?
Is my guess of 6 tubes correct?