On Tue, 23 Mar 2004 06:41:08 +0000, Calif Bill wrote:


"Lloyd Sumpter" wrote in message

Well, if the flow stops, the engine would most certainly overheat! Where
do you
think the heat for the heater comes from?? In a FW system, the "engine
coolant"
(which is also used for the heater) cools the engine, and the raw water
cools
the engine coolant (replacing a radiator in a car).


Works fine. Just like your car. Block off the heater hoses and the engine
still stays cool. Parallel circuits. My forward console Jetcraft runs the
water not above the engine, but does run it about 15' each way to the heater
core.
Bill

OK, now I'm really intriqued! I'm about to add HW heating to Far Cove, and I'm
concerned that the hose I'm interrupting is 1" and the hose I'm using is 5/8"
(Westerbeke reps say it's ok...) Also, in my old engine, I kept losing coolant
(and overheating!) because of a leak in the HW system hose.

Exactly how do these "parallel" systems work? Is there a bypass that shunts some
of the coolant around the HW circuit? If so, how does ANY water go through the
HW circuit? Is there some sort of valve?

Lloyd Sumpter
"Far Cove" Catalina 36