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Old 02-28-2014, 05:48 AM   #4
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Join Date: Oct 2007
Posts: 16,931
The small propane units do work, but have a problem when showering.

It tales observed water flow for the HW burner to come on , so when taking a sailor shower , wet down , stop the water, lather up, scrub , then turn on the water for a rinse.The burner will be off while scrubbing so the first shot of water will be cold. None of the propane units are marine grade , there are loads of thin parts to each.

An all conditions vent must also be installed

IF you have enough propane a shower/tub diverter can be installed and the heated water piped back into the FW tank rather than running down the drain.

The Std metal HW heater with an engine loop is fine and will seldom if ever do harm to the engine. And its nice not to have to light a device ,just to wash your hands at night.
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