hot water from the boat engine

obiec · #1 (**permalink**) 10-17-2003

OK I just instald a new force 10 hot water heater, and it takes 1.5 hours of motering to get the water worm. not hot just worm. both hoses from the engine are very hot. you could not hold eather for long. dose any one else have a heater that takes this long????

obiec · #2 (**permalink**) 10-19-2003

surly some one must have a coment on how long it takes there hot water to heat up from motoring

GordMay · #3 (**permalink**) 10-20-2003

My Yamar 2GMF takes < 1/2 Hr to heat 5 Gal. HWT.
Gord

hamiam · #4 (**permalink**) 10-20-2003

In my experience 1.5 hours is way too long and by then the water should be scaldingly hot. You may have some sort of problem with the plumbing and/or engine.

ikent · #5 (**permalink**) 10-20-2003

Had a similar problem on my boat. You may have an "air lock" if the heater is higher than the engine. I bled the air out of mine and this seemed to do do the trick. FYI - Check the hose temp at the hot water heater - mine was hot too where each end connected to the engines coolant system but the hoses were cooler by the heater.

Good luck
Ike

obiec · #6 (**permalink**) 10-20-2003

so how long dose it take for your water to get hot. and how did you bleed the system.

kimberlite · #7 (**permalink**) 10-20-2003

i bled the system by opening the overpressure valve on the fresh water side and just let the engine circulate the water until the air was bled out of the ststem. if your tang is highte than the engine you might have to add a bleeed valve to the coil side of the heater.
my engine takes about 30 minutes to heat 12 gallons of water to 180 degrees.
fair winds,
eric

ikent · #8 (**permalink**) 10-21-2003

It takes me 45 minutes or so to get hot water if I''m running the engine just to make hot water. (Rarely) Quicker when I''m motoring somewhere. I bled the system by installing a valve in the coolant loop up at the heater (highest point). Then when I change coolant I can bleed the air from the system.

Best of luck

obiec · #9 (**permalink**) 10-21-2003

I was just at my boat and the hoses get very hot very quikly under power, mabe 7 minuts or so and thay are hot right up to the water heater. I think that mabe the force 10 heater just has a crapy heat exchanger and it takes forever. I ran under hevy power for around 15 minuts and there was no real diferance in water tempature. any outher force 10 persons out there.