Join Date: Aug 2003
Location: Long Island, NY
Thanked 79 Times in 74 Posts
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Re: How to Remove Water Heater From Engine Cooling Circuit?
When you disconnect the water lines from the engine to / from the heat exchanger, you may get some air in the lines. It may be difficult to bleed the air out. So be very careful to monitor the engine temperature for a few hours after you bypass the water heater. Make sure you know where the bleed screw is located (it should be near the thermostat) and you can open and close it. I would run the engine up to temperature, then open the bleed screw and vent any air in the system. Do this a few times. If you don't get air out, then you are good to go.
Personally, I like having hot water on board. I use it to wash the dishes, and will add some to the solar shower for washing up after swimming. My new boat has a shower in the transom, so the water heater will get even more use.
Lastly, a new water heater is not very expensive. If you can remove the old one you can install a new one. Just saying.
Deep Blue C, 2002 C&C 110
Mt. Sinai, NY
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