Just finished connecting a Kuuma water
heater to a Yanmar
3jh5e. The engine
came with the hot water
option so it was a matter of connecting hoses from those valves to the heater. Filled the heater main chamber with cold water, started the engine
Well, it didn't really get going the way I thought it would. I have a bypass valve and, with that fully open, after a while (I'm guessing once the thermostatic engine valve opened) the hoses started to get nice and hot. I closed the valve and the hot-side hoses got a little warmer on the inlet side of the water heater but it took quite a while. The outlet started to get warm but not by much.
I expected the coolant
loop to the heater to get hot quite quickly - say, about 5-10 min. It seems that there is just not much flow around the coolant
loop. One question; does this need bleeding? Also, I have pulled off the hoses; the inlet side flows freely but the outlet side just trickles.
Anyone done this before - and am I missing something?