I finally got around to installing a new hot water heater. The heat
exchanger connections on the water heater are labeled in/out. On the
perkins 4-108 there is a riser on the head water jacket and a connection
on the exhaust water jacket. Which one is "out" of the 4-108 that goes
to the "in" on the hot water heater? The hoses were removed sometime ago
so I don't have that as a guide.
krj