Pgitug
Guru
I have gone from a sailboat with a 54 hp Yanmar to a Nordic Tug with a 330 hp Cummins. Looking at the hot water heater for the fresh water system I can see some blue color residue around the hot water heater connections. Is it a good idea to plumb yoUr main engine cooling system into your domestic water heater? If it fails you just fried your main engine, a couple of huge boat bucks. It is nice to have hot water when you get to the dock. But after twenty minutes you could have it via the power cord. So my concern is, is it a good idea have the engine cooling system ran into the domestic water heater or should I plug it off at the engine?