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post #7 of Old 01-07-2009
boatpoker
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I have surveyed two 2002 473's both had leaking hot water tanks that had to be cut in half to get them out. Both tanks were mounted directly on a deck without airspace underneath and neither had a hose on the pressure relief valve leading to the bilge. Inside the stainless steel cover and wrapped around the aluminum tank is fiberglass insulation which acts like a big wick, hence the need for 1/2" airspace under the heater so it does not soak up condensation. Pressure relief valves often drip and without a hose the drips will find their way to the insulation resulting in more corrosion of the aluminum tank.

Both of these boats required major re-plumbing as replacement water heaters had to be located elsewhere. Other than that I found very little wrong with them.

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Last edited by boatpoker; 01-07-2009 at 10:31 PM. Reason: spelling
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