I want to do temp control on two FVs with a Lindr AS-40 (two lines). When connected (havn’t bought it yet) I understand that the temperature will be set and then a pump will recirculate. That obviously won’t work, because I need it to recirculate only when the fermenting wort is too hot. I can see a couple solutions. Put an inkbird in front of everything. That will turn the cooler off with the pump, and I cannot control the two strings separately. I can also separate the pump and cooler and use the ink bird only on the cooler. This still only gives me one temperature to control after. Then comes the brewpi related ones. I can either start the pump always and use valves to shut off the flow for each FV, potentially turning off the pump with a 240v relay in front of the pump.
Thoughts? Specifically wrt hardware and setup for a the new brewpi hardware.