So a plan is shaping up -- thanks for all the very helpful input.
I will install a water-to-water
heat exchanger between engine fresh
water cooling circuit and Espar
heating system circuit, at the
calorifier.
I will install a circulation
pump, maybe something like this:
Bolin Pump EVP 500
Anybody see anything wrong with this plan? Is it ok to install a circulation pump like that, in my engine's fresh water
cooling circuit? Will it screw anything up? One thing I like about the Bolin pump is that when it is switched off, you still have normal flow through it, as if it is not there.