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Old 07-23-2016, 08:50 AM   #11
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Originally Posted by antilley View Post
Assuming that the rear roof vent is the location? Does that opening provide adequate space for installation?


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If your rear vent is 14" X 14" you should have no prob installing
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Old 07-23-2016, 03:07 PM   #12
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Originally Posted by wayne and sherry View Post
I was thinking of getting on of those AC units that sits inside to work as my 2nd AC.Attachment 114973

The unit you have pictured is a swamp cooler not an a/c. I considered a stand alone a/c but it would have to be vented to the outside through a window and you would have a condensation pan that would have to be emptied.
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Old 07-25-2016, 01:50 PM   #13
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I will run a dedicated wire and do some sort of second shore power connection. Curious how hard the wire is to run and how you guys fused the hot wire. Thanks!


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Old 07-25-2016, 02:02 PM   #14
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We added a bedroom unit two years ago. We added a separate 30 amp circuit and use. 50 amp plug and splitter if we need both units. Otherwise we simply use the existing 30 amp line.

The wiring was easy. We removed the bedroom vent casing and ran the wire through the a/c chase to the back of the coach and then ran the wire inside the back wall and closet chase down into the electrical compartment to a dedicated a/c fuse box. It took about an hour.


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Old 07-25-2016, 04:08 PM   #15
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Found the old post that had pics of how someone has done the job.

adding 2nd air conditioner to FR3 30DS
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Old 07-25-2016, 04:59 PM   #16
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Thanks!


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Old 08-02-2016, 11:10 AM   #17
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Originally Posted by cucamelsmd15 View Post
After spending the week at Myrtle Beach in 95 degree temps, Ive decided to break down and do the rear AC. A 15k but simply cant keep up, no matter how early you crank it down in the morning.

My questions are:
1. Where did you buy the unit?
2. Did you seal off the ducting from the front AC or leave it?

I plan on making a cheater box for 50A service so I can run the 30 amp and the additional 20 amp Ill add for the rear AC if the campground doesnt have separate 30/20 connections.
I purchased an Atwood 18000 (equivalent) BTU from a company in Lake Havasu Nevada for around 550 with free shipping. I put it in where the roof vent is located in the bedroom, ran the wiring through the styrafoam in the ceiling, place the thermostat on the vanity wall in the bedroom, ran the AC down through the ceiling into the aft closet in the bedroom into the power distribution panel. I changed the power distribution panel to a 50 amp two separate circuits, installed a 50 amp transfer switch, installed a 5500 watt generator, a new power cable, and it all works really well. The ducting is already in the ceiling to tie this new AC into the duct system. The Atwood is unbelievably quiet, 1000% better than the Dometic.
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Old 08-03-2016, 10:38 AM   #18
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Originally Posted by fedatty View Post
I purchased an Atwood 18000 (equivalent) BTU from a company in Lake Havasu Nevada for around 550 with free shipping. I put it in where the roof vent is located in the bedroom, ran the wiring through the styrafoam in the ceiling, place the thermostat on the vanity wall in the bedroom, ran the AC down through the ceiling into the aft closet in the bedroom into the power distribution panel. I changed the power distribution panel to a 50 amp two separate circuits, installed a 50 amp transfer switch, installed a 5500 watt generator, a new power cable, and it all works really well. The ducting is already in the ceiling to tie this new AC into the duct system. The Atwood is unbelievably quiet, 1000% better than the Dometic.
I'm curious about your conversion over to the 5500 Genset. Did you have to weld new structure to bolt it in? Do you have any pics of the install?
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