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Old 10-05-2015, 12:33 AM   #15
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What would be the power connection for these fans?
I use 92mm fans that have a stated draw of 0.2 amps @12V DC each. Attach them so that they are pulling the air, rather than pushing it as this is more efficient and allows you to position them directly at a vent outlet, again for better efficiency.
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Old 10-05-2015, 06:42 AM   #16
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[QUOTE=lewster;1692970]As the saying goes........'you can put lipstick non a pig.......'

Sorry, but no matter what Dometic, Norcold or Atwood do to a gas/absorption fridge, it's still ancient technology!!!!

/QUOTE]

Not to be too much a wiseacre, but mechanically compressed refrigerant systems ain't exactly a new idea, either.


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Old 10-05-2015, 07:42 AM   #17
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As the saying goes........'you can put lipstick non a pig.......'

Sorry, but no matter what Dometic, Norcold or Atwood do to a gas/absorption fridge, it's still ancient technology!!!!

I'm replacing an ever increasing number of gas/absorption units with marine fridges using 12VDC powered Danfoss compressors.

Work 30 deg. off level and don't really care about the ambient temps. Get cold in a hour and STAY THAT WAY!!!


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Any particular brands that you recommend in the 4 cu ft range? West Marine carries Isotherm but it essentially has no freezer. Which means I'd still be carrying ice packs even if the fridge worked, because I need at least the size of freezer of the old Dometic gas fridges, if not larger.
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Old 10-05-2015, 08:52 AM   #18
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Any particular brands that you recommend in the 4 cu ft range? West Marine carries Isotherm but it essentially has no freezer. Which means I'd still be carrying ice packs even if the fridge worked, because I need at least the size of freezer of the old Dometic gas fridges, if not larger.
Nova Kool makes a 3.0cf unit that is used in the Airstream Interstates, a 3.5cf unit, and a 4.3cf unit.
Nova Kool, refrigerators, freezers, Marine, RV, Truck
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Old 10-05-2015, 10:05 AM   #19
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Quote:
Originally Posted by lewster View Post
As the saying goes........'you can put lipstick non a pig.......'

Sorry, but no matter what Dometic, Norcold or Atwood do to a gas/absorption fridge, it's still ancient technology!!!!

I'm replacing an ever increasing number of gas/absorption units with marine fridges using 12VDC powered Danfoss compressors.

Work 30 deg. off level and don't really care about the ambient temps. Get cold in a hour and STAY THAT WAY!!!


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Have you ever installed one of these larger versions in an Airstream trailer?

Cruise 195 : Isotherm Parts, Marine Refrigeration Parts

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Old 10-05-2015, 10:50 AM   #20
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Have you ever installed one of these larger versions in an Airstream trailer?

Cruise 195 : Isotherm Parts, Marine Refrigeration Parts

Kelvin
Several times. Also look at VitriFrigo. Both are made in Italy, and I use them interchangeably.....which ever one fits best for the application.

'Not to be too much a wiseacre, but mechanically compressed refrigerant systems ain't exactly a new idea, either.'

Not necessarily cutting edge technology, but one that works consistently well!!

No, but you don't hear many folks complaining about marine grade compressor fridges not holding temperatures when it's very hot out.
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Old 10-05-2015, 10:54 AM   #21
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Nova Kool makes a 3.0cf unit that is used in the Airstream Interstates, a 3.5cf unit, and a 4.3cf unit.
Nova Kool, refrigerators, freezers, Marine, RV, Truck
Lewster specifically referenced 12VDC powered Danfoss compressors which is why I thought he might have make/model at his fingertips. When I go into those parts lists and spec sheets for Nova Kool, they don't state who makes their compressors. Unless it is buried in a place I haven't yet found. West Marine does cite Danfoss explicitly.
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Old 10-05-2015, 12:18 PM   #22
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I'm pretty certain that Nova Cool units, like Tundra and other makers of marine units use Danfoss compressors, but since I don't install them, I have no practical knowledge of their components.


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Old 10-05-2015, 02:53 PM   #23
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What does "marine grade" mean, other than an opportunity to charge a lot more?


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Old 10-05-2015, 03:28 PM   #24
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Specifically made for use in a marine environment. This generally implies heavier quality components, extensive use of non-corrosive materials like stainless steel and modern polymers and the specific ability to work for extended periods in the salt and moisture atmospheres found at sea........ also having electrical systems built to the ABYC E-11 marine standards for durability and corrosion resistance.


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Old 10-05-2015, 07:52 PM   #25
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In and Out

Ventilation is an exchange of air - what comes in goes out and what goes out comes in. The dealer who attempts ventilation by installing aux fans pulling/pushing air one direction doesn't understand ventilation.
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