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Old 06-19-2021, 06:39 AM   #1
2 Rivet Member
 
1968 17' Caravel
Jackson Heights , New York
Join Date: Sep 2011
Posts: 29
Refrigerator ventilation question please?

Hi all

I have a 7 year old Dometic RM2351 refrigerator installed in my 68 Caravel

The fridge works well on propane and electric.

Rarely used.

But this summer we have a seasonal site and would like to run fridge continuously for several months.

Fridge has ventilation duct that runs through the roof with a fan

When operating the fridge on ELECTRIC, does the fan need to be continuously running?

When operating the fridge on PROPANE, does the fan need to be continously running?

Thanks!
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Old 06-19-2021, 06:46 AM   #2
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2014 20' Flying Cloud
Sag Harbor , New York
Join Date: Jun 2015
Posts: 17,550
Is this "flue" system [not "vent" IMO] original equipment on your 1968, and does your owner's manual have any guidance?

Our old 1985 Sovereign 25' had a similar system, and I don't think we even had a fan in the "flue" system, because the heat of the propane flame and electric heating element created enough up-draft to get the hot air up and out through the roof.

"fridge roof flue site:airforums.com" search results FYI:

https://www.google.com/search?q=roof...=airforums.com

If there is sufficient ambient intake air through the exterior [presumably louvered] door, no fan should be necessary IMO.

But why leave the trailer for that long with the fridge on? Aren't there safer and less costly alternatives?



The odds of some kind of electrical etc. failure are probably close to zero percent, but why risk any damage over months of absence?

Peter
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Old 06-19-2021, 07:09 AM   #3
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1968 17' Caravel
Jackson Heights , New York
Join Date: Sep 2011
Posts: 29
Yes, original flue/vent system

I have the manual, figured that would be referencing a 68 fridge, but I will take a look.

The trailer will be occupied 4 days a week.
The fridge takes about 24 hours to get to our preferred temperature, so leaving it on during our 3 day absence is preferred.


Thanks for the reply Peter.
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Old 06-19-2021, 07:45 AM   #4
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1988 25' Excella
1987 32' Excella
Knoxville , Tennessee
Join Date: Oct 2010
Posts: 4,118
Blog Entries: 1
If you have electricity to the site I would run it on electric and leave it on. We run our frig 4 or 5 months at the time. Mine does not have a fan system. I would leave the fan vent on also.
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Old 06-19-2021, 09:05 AM   #5
Half a Rivet Short
 
2017 30' Classic
Carlisle , Pennsylvania
Join Date: May 2017
Posts: 10,696
Hi

With power to the site, the only real risk it wearing out the fan. Fans are normally not a crazy expensive thing to replace.

If you still have the original Univolt converter / charger in the trailer, *that* would be a much bigger concern.

Bob
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Old 06-19-2021, 06:18 PM   #6
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1988 32' Excella
Robbinsville , New Jersey
Join Date: May 2012
Posts: 1,514
I doubt your trailer originally came with a fan. I think fans weren't original equipment on trailers until this century, when they didn't have the rooftop flu on all models.. Though many people added them to improve fridge efficiency and ability to actually maintain food safe temps inside the fridge in hot weather.
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Old 06-19-2021, 06:27 PM   #7
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2014 20' Flying Cloud
Sag Harbor , New York
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Quote:
Originally Posted by Eugene View Post
Yes, original flue/vent system
. . .
Thanks for the reply Peter.
Thanks Eugene . . . good luck.
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