Adding 12v heating element to RM2510 Fridge - Escape Trailer Owners Community

Go Back   Escape Trailer Owners Community > Escape Tech > Modifications and Alterations
Click Here to Login
Reply
 
Thread Tools Display Modes
 
Old 09-09-2019, 12:53 AM   #1
Junior Member
 
Join Date: Dec 2018
Location: Smithers, British Columbia
Trailer: 2010 Escape 19
Posts: 21
Adding 12v heating element to RM2510 Fridge

So, I was poking around my Dometic 2510 fridge today and noticed that dispite being the 2 way model it has the receptacle on the flue for the 12v element next to the 120v element. Has anyone added a 12v element to their 2 way fridge?

I am not looking to restart the great debate around running propane while driving, to each their own, but for me running propane while driving simply isn’t the best practice.

We tend to do long days on the road, starting out around 9am, ending the day around 7pm, but with many short stops to eat, take pictures, etc. My though would be to run the element direct from an ignition switched power source so it only runs when the car is on. It wouldn’t have a thermostat at all, but it doesn’t seem that there is much concern of the fridge getting to cold on 12v.

Ok, open the flood gates, tell me why it won’t work.
__________________

DougG is offline   Reply With Quote
Old 09-09-2019, 02:26 AM   #2
Senior Member
 
Join Date: Dec 2012
Location: Edmonton, Alberta
Trailer: 1979 Boler B1700
Posts: 11,983
Quote:
Originally Posted by DougG View Post
... My though would be to run the element direct from an ignition switched power source so it only runs when the car is on.
That appears to be common practice in Europe, where the standard tug to trailer electrical connection includes a separate circuit for this purpose. On the other hand, I don't know that a separate circuit is necessary, since a good tow vehicle connection would only be powered when the engine is running (or at least the ignition is on) anyway; the two-circuit system was probably designed for trailers of an earlier era which didn't have their own batteries.

If you want to ensure that the refrigerator never runs on 12V when the battery is the only source of power, you can use a voltage-controlled (or voltage-sensing) relay, which would switch on when typical charging voltage is present (such as from a running engine or the converter) and off in the voltage range of just a battery (even fully charged). This is an example (with much higher current capacity than required; it's just the first one I found):
http://https://www.amazon.ca/Baoblaz...69263042&psc=1
__________________

Brian B-P is offline   Reply With Quote
Old 09-09-2019, 09:45 AM   #3
Senior Member
 
rubicon327's Avatar
 
Join Date: Mar 2016
Location: Burlington Twp., New Jersey
Trailer: 2010 Escape 19
Posts: 3,336
Just brainstorming here. You don't mention if you already have solar or an inverter. Instead of messing with the fridge could you operate it on 120V AC by wiring to an inverter? The addition of a dc to dc charger like a Redarc or equivalent could be wired up from the tow vehicle to keep the trailer battery up. Solar would help too if you have it. I know there is some inefficiency with an inverter but it might be worth thinking about. Santiago did a dc to dc charger to run a DC compressor based Novakool fridge. He didn't have solar and an inverter wouldn't apply to his design, but it is the same principle. He didn't have the trailer very long but some of his early reports indicate it worked well. I'm sure the electrical gurus will jump in shortly...
__________________
“One way to get the most out of life is to look upon it as an adventure.”― W.F.
rubicon327 is offline   Reply With Quote
Old 09-09-2019, 10:05 AM   #4
Junior Member
 
Join Date: Dec 2018
Location: Smithers, British Columbia
Trailer: 2010 Escape 19
Posts: 21
Quote:
Originally Posted by rubicon327 View Post
Just brainstorming here. You don't mention if you already have solar or an inverter. Instead of messing with the fridge could you operate it on 120V AC by wiring to an inverter? The addition of a dc to dc charger like a Redarc or equivalent could be wired up from the tow vehicle to keep the trailer battery up. Solar would help too if you have it. I know there is some inefficiency with an inverter but it might be worth thinking about.
Thank you for your thoughts. This was actually what I was thinking of doing until I saw the slot for the 12v element on the fridge. I don’t currently have an inverter, but no matter what I end up doing I plan to add a Dc-dc charger. I already have 4 gauge wire run to an Anderson plug at the back of my tow vehicle, ignition switched with an 80amp continuous duty solenoid. If this line ties into a dc-dc charger then it will also serve as a convenient source of ignition power at the front of the trailer. So, at the end of the day, I guess I am just looking for a way to avoid buying an inverter.
DougG is offline   Reply With Quote
Old 09-09-2019, 11:01 AM   #5
Site Team
 
cpaharley2008's Avatar
 
Join Date: Jun 2010
Location: Chilliwack, British Columbia
Trailer: Escape#4, 2019 Escape21 DejaView pulled by 2014 Ram Hemi/8sp
Posts: 19,793
Does your tow vehicle have a specific power line from the front to the rear hitch? Have you measured the output at the Anderson plug in the truck bed?
__________________
Jim
"Never in doubt,..... often wrong!"
cpaharley2008 is online now   Reply With Quote
Old 09-09-2019, 12:03 PM   #6
Junior Member
 
Join Date: Dec 2018
Location: Smithers, British Columbia
Trailer: 2010 Escape 19
Posts: 21
Quote:
Originally Posted by cpaharley2008 View Post
Does your tow vehicle have a specific power line from the front to the rear hitch? Have you measured the output at the Anderson plug in the truck bed?
Yes, there is a specific power line. I am not sure what you mean by measuring output. With no load it will be 13.6ish volts when the truck is running, but will of course drop when a load is applied due to the voltage drop that plagues long 12v wire runs.
DougG is offline   Reply With Quote
Old 09-09-2019, 01:02 PM   #7
Senior Member
 
Join Date: Jun 2009
Location: Terrace, British Columbia
Trailer: 2012 Escape 19
Posts: 349
We have a 2011 19 with the Dometic RM2510 fridge and I don't see anything that looks like a place for a 12vdc heating element. Would you please post a photo of what you're referring to?

Doug
NuthatchBC is offline   Reply With Quote
Old 09-09-2019, 01:57 PM   #8
Junior Member
 
Join Date: Dec 2018
Location: Smithers, British Columbia
Trailer: 2010 Escape 19
Posts: 21
Quote:
Originally Posted by NuthatchBC View Post
We have a 2011 19 with the Dometic RM2510 fridge and I don't see anything that looks like a place for a 12vdc heating element. Would you please post a photo of what you're referring to?
When looking at the back, on the right hand side, where the 120v element goes into the flue, there is a stamp in the sheet metal cover that says 110-240v where the 120v element goes in, and under it it says 12v. That is what encouraged me to investigate further. If you remove the sheet metal cover, inside there is a metal tube that the 120v element goes in, right next to it there is a second empty tube where the 12v element would go. I can’t get a good picture of those 2 tubes. But here are a couple photos in the sheet metal housing I am talking about.
Attached Images
File Type: jpg F7C96C65-F2B0-4FAA-8B64-093A8304517A.jpg (193.1 KB, 7 views)
File Type: jpg F9C48F7A-0F22-4E3A-A8D5-50891E9EBEE1.jpg (110.3 KB, 7 views)
__________________

DougG is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off






» Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by Escape Trailer Industries or any of its affiliates. This is an independent, unofficial site.


All times are GMT -5. The time now is 10:53 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Copyright 2012 Social Knowledge, LLC All Rights Reserved.
×