I got the furance up and running after topping it off with coolant. Not sure exactlly why....I can only conclude that there was a small coolant leak from the hoses leading to & from the main Espar unit and that tightening up the hose clamps stopped the leak. As I sit here on the boat, it’s now been running (and cycling off/on) for ~ 2 hrs with no sign of a leak.
I also hired a Yanmar and HVAC tech I know to come out for an hour and check everything. He explained what each of the valves do (the 2 lower valves are 3-way and the upper, middle valve is a 2-way, my guess was incorrect). And how the different combinations of valve settings affect how the fresh water is heated; there’s also an option for having the engine heat the cabin and fans running when motoring, with the Espar furance turned off.
Thanks for these manuals Bob--the figures/schematics are helpful as a model for mapping out my own system. Appreciate all the help I got from this thread!
Matt
I also hired a Yanmar and HVAC tech I know to come out for an hour and check everything. He explained what each of the valves do (the 2 lower valves are 3-way and the upper, middle valve is a 2-way, my guess was incorrect). And how the different combinations of valve settings affect how the fresh water is heated; there’s also an option for having the engine heat the cabin and fans running when motoring, with the Espar furance turned off.
Thanks for these manuals Bob--the figures/schematics are helpful as a model for mapping out my own system. Appreciate all the help I got from this thread!
Matt