Yes, I put both the 12v
circulator and the 12v
muffin fans on a basic 220 heater bimetal thermostat.
I'd like to work out a delay for the fans so they don't blow cold at first, but it's not a big issue.
I've only got the pumps and controls test fitted, a bit of a mess actually, I'll get it tidied and post some pictures.
There are a few things I've yet to work out.
I have two zones, bathroom and galley, with two pumps, I need check valves to avoid backflow that misses the hot water heater. I haven't been able to find check valves with soft enough springs. The ones I've sourced limit my flow terribly.
I'm disappointed with the effectiveness of the "motor assist" coil in the Suburban hot water heater.
I get very good performance running the potable water from the water heater through the heating system, but I really want to have a separate, antifreeze loop for it. Might have to look at a separate heat exchanger.