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Old 07-22-2015, 07:47 AM   #61
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Don,
Dometic still make the older style air distribution box with directional vents. The older style is quieter and seems to flow more air.
Where would you be able to find these
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Old 07-22-2015, 08:09 AM   #62
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I don't have the PN off hand, but you can get it from Dometic. I'm sure you can get it from PPL, Camping World etc.
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Old 07-22-2015, 08:46 AM   #63
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I found this on Amazon. Check with Dometic to make sure it will work.
http://www.amazon.com/Dometic-310661.../dp/B005BOQ9ZK
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Old 07-22-2015, 10:03 AM   #64
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I found this on Amazon. Check with Dometic to make sure it will work.
http://www.amazon.com/Dometic-310661.../dp/B005BOQ9ZK
It won't work on the Brisk II

I sent a question to Dometic and here is their answer:

Good morning Don,

I do apologize there is only one air distribution cover available.

We appreciate this opportunity to address your situation and hope all of your future travels are trouble free. Please do not hesitate to contact us at any time to order parts or for further assistance.



Sincerely,
Michelle
Customer Support Center
Dometic Corporation
800-544-4881


Yada, Yada, Yada
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Old 08-22-2015, 01:51 PM   #65
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The air conditioner in our 1990 34 ft died 65 days ago. We don't live close to any As dealer so we took it to Camping World & what a mistake!! They still haven't ordered the unit or the drain pan & cups. They have told us 2 about 2 different units & then said they won't work. At this point I'll just figure out the unit & parts to order & then decide if we should travel to the AS dealer in Columbia, SC 2 hour away for the install.

How do I know what unit will fit our trailer? Do I need to measure the opening on the roof or are units standard size? The original was a Coleman but am considering a 15000 BTU. Thanks to the posts above I now know the part # for the pan. Thanks in advance to all.

Jane
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Old 08-22-2015, 02:02 PM   #66
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The air conditioner in our 1990 34 ft died 65 days ago. We don't live close to any As dealer so we took it to Camping World & what a mistake!! They still haven't ordered the unit or the drain pan & cups. They have told us 2 about 2 different units & then said they won't work. At this point I'll just figure out the unit & parts to order & then decide if we should travel to the AS dealer in Columbia, SC 2 hour away for the install.

How do I know what unit will fit our trailer? Do I need to measure the opening on the roof or are units standard size? The original was a Coleman but am considering a 15000 BTU. Thanks to the posts above I now know the part # for the pan. Thanks in advance to all.

Jane
Jane,

All RV roof A/C units are built to fit into your standard 14" X 14" roof opening, so you essentially have your choice of units to select. You will need a new interior air distribution box (ADB) to go with the new upper unit on the roof. You can get either 15K or 13.5K units.

The only other decision you have to make is whether to use manual controls located on the ADB or get an electronic thermostat, which will require some interior wiring.

I would not let Camping World change a light bulb in any RV.....and definitely NOT on an Airstream!!!!
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Old 08-22-2015, 02:34 PM   #67
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Lew,
Thank you for your response. I agree with the sentiment about Camping World.

Hmmm so all units are standard & I have the drain pan part # thanks to this thread & all of this information took me about 30 minutes to obtain. Note sure what Camping World's problem is. Either my husband will install or we will take to Out if Door Mart about 4 hours away after all of the trouble with CW. We were trying to have it done by them due to the 100 degree temps here & because they have easy access to the roof. We were hesitant about it but thought an air conditioner install would have been a fairly consistent process among trailers. Oh well - lesson learned.

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Old 08-22-2015, 11:22 PM   #68
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I'd give OODM a call and tell them what you have and what you want. They have a good reputation and can probably order what you'll need.
Tossed my Coleman about 2 years ago at start of full Monty, covered hole with sheetetal since, recently been prepping and research to be sure everything up there is ready for new dometic unit and have learned a lot.
Had to add reinforcement to roof, original hole was right behind a rib then nothing for 42", sheet metal alone can't support an air conditioner and the sag actually wore a hole through the roof skin . All fixed now.
Had to open up the hole a tiny bit, dometic calls for 14-1/4" pretty easy to do with a jug saw metal blade, ruler and framing square .
Old electrical wiring, old unit only used 120v, there wasn't a 12v run to the air conditioner, since I have the ceiling panels down I used 2 unused wires I had found earlier. I crimped on extensions to reach the air conditioner area. So there's 120v and 12v available now.
Original ac used the air distribution box for controlling the ac. This would be easiest way to set up the new unit because of the wiring needed for using a wall thermostat with the dometic. For them you have 3 options for controlling the ac;
1. Simple controls on the air distribution box no additional wiring needed except 12v supply.
2. Single zone LCD thermostat, for this you have to have 3 wires running from where the ac will be to where the thermostat will be, this will let you controll the ac only. There were 4 wires original to the trailer that were unused before , they went from near the ac through the walls and came out where the wires for the furnace came out for the furnace thermostat, take a look if they're there you can use them. If you want the SZLCD to control the furnace as well, so you would only need 1 thermostat vs 2, you have to get the 2 blue furnace wires to the ac area, they will run in the overhead in the wire bundle on the curb side getting to them may be possible through the side of the ac opening in the ceiling but would probably be pretty difficult without the panel dropped. Since my pannel was down I was able to get to them , cut them and splice extra length to feed the ac area. So now I've got 4 blue wires in the area , 2 blue in and. 2 blue going to the thermostat as original.
3. Climate control center II, you need this if you get an ac unit with heat pump or heat strips. To use this a phone line wire has to be run from the ac area to where you want the thermostat . One end of the phone line has to have the RJ-11 connector cut off and a new one crimped on reverse wired. If you want furnace control from cccii you need furnace wire as described in 2 above. An alternate to the phone line; if the 4 unused original wires are present as discussed in 2 above, you may be able to use those and crimp them to phone line at either end and connect those ends, they both have 4 wires. There are crimps for small phone line connections like this available at big hardware stores.
There are a few other things like boxing in the perimeter of the 14" hole.
I've done a ton of research to figure the change/upgrade out , hope it helps.
Highly recommend downloading the installation manual for the unit you want and going through it in advance.
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Old 08-23-2015, 06:49 AM   #69
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Go to Out of Doors Mart, they are an Airstream dealer and service center. They will be able install the proper AC.
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Old 08-23-2015, 07:28 AM   #70
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Thanks HiJoeSilver. I appreciate the detailed info.
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Old 08-23-2015, 08:42 AM   #71
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I don't think I would get a unit with an electronic thermostat. If something goes wrong it's harder to fix. I ditched the Comfort Control Center in favor of local control for simplicity and ease of repair. The local controls can also handle a heat strip.


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Old 08-26-2015, 05:03 PM   #72
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My Dometic Brisk II with the drain kit has been been working great during this hot humid summer here in Houston, But I have noticed at time condensate running off the top. The drain tube is working and I still get condensate draining out the drain tube connected to the cups that exits at the wheel well. I assume that one of the cups may be plugged up and it is overflowing outside of the main gasket as it it is supposed to do. But how do you check the cups and clean then if necessary.Thanks
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Old 08-26-2015, 05:49 PM   #73
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Don,
It could also be the bare, exposed suction line from the evap to the compressor.
Click image for larger version

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Wrap it up with some insulating pipe tape and I'm sure you'll see a lot less dripping down the side of your trailer.
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Old 08-30-2015, 07:56 AM   #74
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Do what Top says. Also on mine there was a hole in the gutter leading to the cup that allowed any condensate from those suction lines to drain out on the roof. I would put some silver duct tape over that hole if yours has one.

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Old 09-02-2015, 12:52 PM   #75
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Don,
It could also be the bare, exposed suction line from the evap to the compressor.
Attachment 246430
Wrap it up with some insulating pipe tape and I'm sure you'll see a lot less dripping down the side of your trailer.
"Suction" side is the larger one.. Right?
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Old 09-02-2015, 04:12 PM   #76
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Yep, the big'n.
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Old 09-03-2015, 06:35 AM   #77
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Dometic drain kit

From what I have read it does not hurt to place these units on their top to install the drain kit. I am old school and was always told NEVER put a unit on it's side or top. Just wanted to clarify this before turning upside down. Lewster please chime in on this your input is highly regarded. Thanks Jim
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Old 09-03-2015, 09:33 AM   #78
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From what I have read it does not hurt to place these units on their top to install the drain kit. I am old school and was always told NEVER put a unit on it's side or top. Just wanted to clarify this before turning upside down. Lewster please chime in on this your input is highly regarded. Thanks Jim
Jim,

After installing several hundred roof A/C units from both Dometic, RV Products and Carrier over the past 15 years, I have NEVER had an issue with placing any of these units on their sides or top during installation. Some have even been stored for a few weeks in their boxes on their end due to space limitations, and still no problems.

THE KEY here is to allow the unit to 'rest' after proper installation for a several hours in the orientation that it will be operating. This allows all of the refrigerant to settle back to it's original place.
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Old 09-03-2015, 03:53 PM   #79
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Dometic drain kit

Thanks lewster for your expertise. Jim
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Old 11-05-2015, 06:17 PM   #80
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Lewster, has Dometic updated the kit number to 3107688.016 ?
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