Heat exchanger

Latest addition to the fire ,16 section's of box section firetubes (650x50) which works out at 2.08m² (22.389ft²) its a 2 pass

Welded on both sides bit tricky (tight space) will have to see how this holds up to the heat (normally firetubes are an expansion fit)

This will be the diversion plate.Directing the heat through heat exchanger.This will still enable wood to be burnt.

All Tubes welded in both side's.Just got to encapsulate in tank .