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Old 07-26-2016, 04:40 PM   #15
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1967 17' Caravel
Austin , Texas
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This past Saturday, I installed a Coleman-mach 8 Polar Cub on the roof my '67 Caravel. Prior to installing, I pulled interior ceiling skin and ran a condensate drain tube from ceiling to street side access panel. Parked by pickup truck within inches from the Caravel and two of us plopped the a/c unit on the roof and had it in position in under 5 minutes. Have not hooked up the a/c unit yet, and only snugged it down half way for weather protection. Received about 2" of rain last night and not a drop in the coach.

I just hope I can get the ceiling panels back on with the weight on the roof pushing down. Might have to jack up the unit a bit to get the skins back in place. We will see. I also installed a condensate pump and heating element.
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Old 07-26-2016, 05:36 PM   #16
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Did you have framing between the inner and outer skins? A friend installed a unit on is older Argosy and had to put wood between the skins to keep them apart when tightening down.
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Old 07-26-2016, 05:56 PM   #17
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Yep, wood blocking/frame installed
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Old 07-26-2016, 05:58 PM   #18
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1974 27' Overlander
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Yes, you have to add something for the support frame to bite down on. I used 1" square aluminum tube. Most folks use wood.
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Old 07-26-2016, 06:07 PM   #19
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1966 24' Tradewind
versailles , Kentucky
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We installed a Coleman Mach three on our 66 Tradewind this summer. We ordered the ac, the drain and the interior ceiling control panel from Amazon. This is the drain set up we ordered. It's made for a dometic penguin but will work with the Coleman Mach 3. Dometic 3107688.016 Drain Kit
Sold by: American RV Company $61.73. It required some simple modifications but appears to be functioning well. The two drain cups attach under the bottom of the unit, before attaching these we used a forstner bit 5/8" by hand to make two small holes through the bottom gasket which was attached to the unit in order to run the tubes through it instead of cutting the gasket. The drain kit included a 14" square gasket and two extra strips of gaskets. We glued The 14" one to the gasket that was already attached to the ac. This gives the drain cups room to clear the top of the camper. The other two strips were added to the back edge of the ac to level it up. The two tubes went to a tee which attached to our existing drain hose. Did not seal the cups so if the hose gets stopped up they will overflow on the outside of the trailer. tightened it down on the roof to the white indicators on the gasket. Not too difficult. The ceiling assembly was 9430d715. The heat coil was item 9233-4551.
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Old 07-26-2016, 06:29 PM   #20
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2007 23' Safari SE
ROSWELL , Georgia
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Quote:
Originally Posted by HowieE View Post
Mike

Who's ceiling box did you use? Dometic makes two for the Penguin, one that will support the heater and one that will not.
Domestics 3314851.000 ,the only 2 knob control box listed for the Penquin 2 model 61429592; 13,500 unit.The only other ceiling box,had no knobs,but used a wall thermostat.That one had an optional heat strip.
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Old 07-26-2016, 11:54 PM   #21
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1971 31' Sovereign
Temple , Texas
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Last week I removed the old Armstrong from my 1971 Sovereign and installed a new 15,000 BTU Dometic Brisk II. Removing the Armstrong was the hard part. That thing weighs a ton. The Dometic probably weighs a fourth the weight of the Armstrong.

I used a rented duct jack for $60 to lift the units. It was the ideal tool for the job.

Reinforced the opening with 2X2 lumber between the skins.
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Old 07-27-2016, 02:53 AM   #22
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Scotia , New York
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If you dont have another way to get a AC unit on your roof, check out my method:
http://theouterlimits.ws/projects/ai..._ac/index.html
Out the window over the garage on 2x10 planks. Just dont ask me how I got the old one down.
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Old 07-27-2016, 07:54 AM   #23
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Wow I got the planks I just need a second story.

Great article Thanks
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Old 07-30-2016, 05:32 AM   #24
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1968 26' Overlander
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Thanks WayneG. Your approach raises an interesting possibility for our upcoming installation.

Roy
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Old 08-11-2016, 10:26 PM   #25
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Wichita , Kansas
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Howie,
Keep us posted on what you end up doing. I think that my original equipment Penguin is following the lead of Vernon's unit.

Steve
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Old 08-19-2016, 02:20 PM   #26
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1983 31' Excella
The Woodlands , Texas
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I'm replacing my a/c with a Coleman Mach 15 / 15,000BTU... Does anyone know where to get the drain pan kit. Coleman told me Van Pan in FL. But he wanted $299.99 for the kit.
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Old 08-19-2016, 02:37 PM   #27
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1975 31' Sovereign
Twin Falls , Idaho
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I installed a 15k Coleman Mach 8 heat pump on my 75 sovereign. The most difficult was running the wires to the new thermostat control. The original Armstrong had been vandalized for the copper before I purchased and renovated, so the factory wiring to the unit and drain line were already in place. It was a moderately difficult project with snaking the thermo control wires. It's been a couple years since but I'm certain I didn't need an extra kit or pan for the drain. I just connected to the original line and it drains as it should.
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Old 08-22-2016, 09:53 AM   #28
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Well it in in and running. I wrote a short descriptions of what I did with suggestions of what you may want to consider if you want to install your own AC.

http://www.airforums.com/forums/f44/...ac-155662.html
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