Mountain Don wrote: »
I don't know if the OP (or any other interested folks) knows this or not, but rocket mass heaters have many discussion threads over at the permies.com forum
Pressure and temperature relief valve(s) somewhere?
You have a great start on a steam boiler explosion going there. You better get some real advice and fire the person that came up with those plans. Sorry, that layout you have shown is DANGEROUS. The coil is above the water level and will trap steam till the pex melts and blows out.
Conext XW6848 with PDP, SCP, 80/600 controller, and conext battery monitor
18 SW280 panels on Schletter ground mount
48v 790 amp/hr Crown battery bank