Nater Potater
Well-Known Member
- Oct 19, 2020
- 2,646
- Boat Info
- 1992 300DA Sundancer
- Engines
- Twin Merc Alpha I Gen II I/O's with 5.7 V8's
If the tank has been drained down for any reason (usually for winterizing), you have to purge all of the air out by opening at least one HW tap and running the FW pump until all of the air is purged out. Failing to do that could lead to a heating element being exposed and almost instantly burning out, as it isn't surrounded by water to draw off the heat. Really no different than running your engine on the hard without a water muff.I often read something that says "make sure there is water in the HW tank before turning it on". Having never had HW on any previous boats, this is new to me. Doesn't the water in the FW tank automatically refill the HW?