I am interested in running both a bus heater and domestic hot water off my single propulsion engine. I know others have done this, but I am wondering how they have plumbed their systems. Series or parallel, heater by-pass loop, booster pump or no?
I'm also wondering if switching from the usual 5/8" hose to 3/4" might eliminate the need for a circulation pump. My engine (FL120) seems to have a valve on the side of the engine where the hose returns from the water heater. Does anyone know if that is intended to reduce the flow through the system?
..... the circumstances pump is this tiny solar job that is just perfect.