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Old 20-04-2015, 13:08   #16
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Boat: 42' Sportfish
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Re: Passport II marine air

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Originally Posted by ranger42c View Post
Not sure what the actual reverse cycle unit nomenclature is... and I'm here, and docs are there. (And if I remember right, the "manual" isn't all that informative, except for installation instructions.)
I did just find a PDF copy of the manual, on the Dometic site. Looks to have been scanned from paper, likely sometime after Dometic acquired Marine Air. Looks like it does show a bit more than I remembered about the AC units itself. Probably same info as what's on the link given above, but at least it's PDF.

Search Marine Air Passport II

-Chris
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Old 20-04-2015, 13:14   #17
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Re: Passport II marine air

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Originally Posted by a64pilot View Post
I want to think that around 50 deg water temp is about where a marine heat pump loses it's capability to produce much heat, to some extend the amount of water flow through the system also contributes, so if the strainer is partially blocked, you lose efficiency there too.

I think ours functions down to 42F water temps, but I can't just now find the ref that makes me think that.

In any case, it should work just fine at 50F water temps; that's what ours was at over this last weekend, and the boat was toasty.

-Chris
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