Apologies, I wasn't the most clear. I am talking about installing valves
on the fresh water intake and exit of the water heater, so no water enters
the water heater. Then should I decide to cruise overnight, I could turn
the valves and allow water to enter the water heater. I winterize my
plumbing without antifreeze, blow compressed air throughout the system, and
drain the water heater with a wet vac. In the 5 years of owning, I've
never used the water heater, and draining the heater with a wet vac is 2-3
hours of effort. But as our sailing skills improve, we are looking at
overnight trips in the near future, so I'd like the option of the water
heater if needed. I'm looking at these whale valves:
Thanks Jack for the comment about 110 volt on the heater, was wondering
about that. I should think about that.
I am in Chicago, and our off season is about 7 months, so my water heater
sits with no fluid for 7 months every year already. I'm curious if
potentially 5 more months with no liquid would hasten corrosion, but I
don't know which is worse, submersed in water, or dry. I would almost
think submersed in water could corrode coils, etc, quicker.
Thanks all for the insight, still debating if a good idea to do.
1994 C320 #138 "Canuck" Monroe Harbor, Chicago, IL