Reply
 
Thread Tools Search this Thread Display Modes
 
Old 02-01-2014, 02:55 PM   #1
Rivet Master
 
truckasaurus's Avatar

 
1960 33' Custom
Saskatoon , Saskatchewan
Join Date: Jun 2005
Posts: 1,168
Images: 25
Split Air Conditioner install

I'd never go for a roof mounted AC on a trailer so I'm always interested in other solutions. I like SmokelessJoe's split system and although this youtube guys work doesn't give it much of a factory instal feeling I liked being able to see and hear it an action. I'll be looking for either a 2 or 3 zone set up myself and would hope to get heat as well as cool but thought the video might be of interest to some.

Mini Split A/C on a Rv Camper. Better than a roof top or a window unit! - YouTube
__________________

__________________
1960 Sovereign 33' Pacific Railroad Custom
truckasaurus is offline   Reply With Quote
Old 02-01-2014, 03:31 PM   #2
Rivet Master
 
Landrum's Avatar
 
2014 25' FB International
Little Rock , Arkansas
Join Date: Jul 2012
Posts: 591
There was an article in Airstream Life a couple of years ago about a restored AS that included a split system. I'm pretty sure it was a Dometic heat pump made for boats. They created a compartment/cabinet to hold the compressor with a SS grille on the side of the AS for air circulation. It was very interesting, and something I would consider if I ever restore one.
__________________

__________________
Landrum is offline   Reply With Quote
Old 02-01-2014, 03:33 PM   #3
Rivet Master
 
truckasaurus's Avatar

 
1960 33' Custom
Saskatoon , Saskatchewan
Join Date: Jun 2005
Posts: 1,168
Images: 25
Thanks Landrum I'll have to look for that article. I'm getting more interested the more I start reading. It sounds like a DC pump means that these units can be run off even smaller generators too (I have a 3000 Honda so probably more than OK).
__________________
1960 Sovereign 33' Pacific Railroad Custom
truckasaurus is offline   Reply With Quote
Old 02-01-2014, 03:37 PM   #4
Rivet Master
 
Landrum's Avatar
 
2014 25' FB International
Little Rock , Arkansas
Join Date: Jul 2012
Posts: 591
It was the summer 2012 issue, and the AS was restored by Uwe with Area 63 Productions. I think at the time the article came out you could also see the AS on Area 63's website.
__________________
Landrum is offline   Reply With Quote
Old 02-01-2014, 03:39 PM   #5
Rivet Master
 
truckasaurus's Avatar

 
1960 33' Custom
Saskatoon , Saskatchewan
Join Date: Jun 2005
Posts: 1,168
Images: 25
cool, off to the home Airstream library :-)
__________________
1960 Sovereign 33' Pacific Railroad Custom
truckasaurus is offline   Reply With Quote
Old 02-01-2014, 08:32 PM   #6
Rivet Master
 
Aerowood's Avatar

 
1971 21' Globetrotter
Arvada , Colorado
Join Date: May 2006
Posts: 2,807
I've been looking at a split system also and I have mixed feelings about a household unit or a commercial truck unit and have been looking at these.
Danhard Inc Mobile HVAC components and systems
Aerowood is online now   Reply With Quote
Old 02-01-2014, 09:16 PM   #7
Rivet Master
 
Landrum's Avatar
 
2014 25' FB International
Little Rock , Arkansas
Join Date: Jul 2012
Posts: 591
http://www.airforums.com/forums/1408133-post.html

I tried to post a link, but I'm not sure if it will work. Collin Hyde just mentioned on another thread that his next project on a '55 restoration was a split AC with the condenser located in a cavity in the belly pan. That's another source you look into.....
__________________
Landrum is offline   Reply With Quote
Old 02-01-2014, 09:39 PM   #8
Rivet Master
 
truckasaurus's Avatar

 
1960 33' Custom
Saskatoon , Saskatchewan
Join Date: Jun 2005
Posts: 1,168
Images: 25
I'd be interested to see the Danhard info, I found this Real A/C but also mention of $4500 too
__________________
1960 Sovereign 33' Pacific Railroad Custom
truckasaurus is offline   Reply With Quote
Old 02-02-2014, 04:34 AM   #9
Rivet Master
 
Wayward's Avatar
 
2006 25' Safari FB SE
Cary , North Carolina
Join Date: Mar 2007
Posts: 803
Interesting discussion. I read through the links and products mentioned. The Airstream's design really would benefit from a split A/C system if less obtrusive than the rooftop models.

There appear to be some significant design tradeoffs due to the power demand, need for high volumes of air circulation, and space limitations.

I'll assume that when A/C is needed most (hot humid campgrounds), a typical Airstream needs 13,000 - 15,000 BTU heat capacity.

If I understand all this.....

The marine units look they need seawater (or lake water) for the condenser.

The Danhard catalog has evaporators and condensers but seems to assume the vehicle will supply an engine mounted compressor.

The aircraft one and some of the semitruck self-contained models with DC compressors are what an RV needs, but are very high current. The 10,000 BTU "Real A/C" for example draws 37 amps of power at 24 volts which would be about 80 amps at 12 volts. Most Airstreams could not mount enough batteries to make that practical.

So, would it be OK to assume that a split system would require either a 120v AC shore power model, or a big DC generator to run a DC compressor motor?

If a gasoline powered DC generator is required for A/C while boodocking, wouldn't it be more efficient to run the A/C compressor directly off of a small gasoline or propane powered engine?
__________________
2006 Safari SE FB
2000 F150 4.2L
2011 F250 6.2L
Raleigh, NC
Wayward is offline   Reply With Quote
Old 02-02-2014, 04:45 AM   #10
Rivet Master
 
TinLoaf's Avatar

 
2006 25' Safari SS SE
Trenton , Illinois
Join Date: Feb 2007
Posts: 793
Images: 22
Oldtrucksrul has a really nice split setup. I don't know the details, but the compressor and fan are out on the tongue and the airflow inside comes out the "Airstream" grate up by the ceiling behind the fridge. It's incredibly quiet both inside and out.
Attached Thumbnails
Click image for larger version

Name:	IMG_2092.jpg
Views:	516
Size:	152.4 KB
ID:	204777   Click image for larger version

Name:	IMG_2174.jpg
Views:	660
Size:	249.2 KB
ID:	204778  

Click image for larger version

Name:	IMG_2185.jpg
Views:	743
Size:	107.0 KB
ID:	204779  
__________________
Steve
TinLoaf is offline   Reply With Quote
Old 02-02-2014, 07:46 AM   #11
Rivet Master
 
truckasaurus's Avatar

 
1960 33' Custom
Saskatoon , Saskatchewan
Join Date: Jun 2005
Posts: 1,168
Images: 25
I very much like the look of Tin Loafs set up.

I've been looking at the Dometic guide as I'd like something that has had some design consideration regarding being installed on an RV or semi plus I'd like to be able to get parts and service through their network.

Choices - Dometic

The EHEX7 is the 7000 Btu split system internal unit and uses 7.3 amps to cool, (I'd need 2). The ACCE14 is the external Condenser. I dislike the bulky looking lump for the interior but I can deal with it design wise.

The link above also has a specifying the system section with some handy tips, it seems for 14000 Btu I'd need a 3.0 KW continuous output genset with a start peak of 70 AMPS surge. Not sure if my Honda is suitable for that but will check. It does mention that a 20 AMP 115 V outlet at a truck stop is fine.

Now with the external unit measuring in at just 24.5" x 12.5" x 6.63" including the fan protrusion and just 13 lbs that's seems doable. I'm starting to think I could mount it vertically (like a grave stone), on the A frame, with the lowest point set down even say 6" below the frame rail which would leave 14" above the frame. I'm daydreaming about having it stealth installed in a sectioned polished faux propane tank but I'm getting a bit ahead of myself here.
Attached Images
 
__________________
1960 Sovereign 33' Pacific Railroad Custom
truckasaurus is offline   Reply With Quote
Old 02-02-2014, 09:47 AM   #12
Rivet Master
 
Aerowood's Avatar

 
1971 21' Globetrotter
Arvada , Colorado
Join Date: May 2006
Posts: 2,807
The Danhard units do have a 120VAC compressor available. It's a mix and match setup that would have to be assembled as seperate components and would require a certain skill in Freon systems. Another down side is it would be expensive, on the plus side it would be very durable and be servicable. I talked to them several years ago and was informed that you could use a 120VAC compressor that only pulled 7 amps with the fans being 12VDC. I am skeptical of that claim and would have to see more data. I don't want the AC system to have greater value then the complete trailer. I see no way around running any Air Conditioning unit without a 120VAC external power supply, the issue is how much. Do I spend my cash on a more efficient AC or a bigger quiet GenSet.

I installed three 30k BTU systems on our C-130 from here, Untitled Document, but again very expensive, but they have also been trouble free. Each system rquires 11kva for start. They also make units like Truck linked, also expensive.

One of my biggest issues in making up my mind as to which unit to use is, I have Champagne Tastes with a Lager Buget.

I too am awaiting Collin Hyde's info on what he is doing.
Aerowood is online now   Reply With Quote
Old 02-02-2014, 09:55 AM   #13
Rivet Master
 
truckasaurus's Avatar

 
1960 33' Custom
Saskatoon , Saskatchewan
Join Date: Jun 2005
Posts: 1,168
Images: 25
Time to call the VAP hotline. Cost is a big one for sure. I'm thinking for my 33 footer I'd need a couple of roof mounted ones so about $2 to $3k. If I can put a stealth system in that performs and looks better for that budget, I'm in. If I can get the external components, (condenser and fan in a fake propane tank) maybe I'll have my own little market segment….

Also getting info about these online is brutal; it's like nobody wants to sell them to the public.
__________________
1960 Sovereign 33' Pacific Railroad Custom
truckasaurus is offline   Reply With Quote
Old 02-02-2014, 10:15 AM   #14
Rivet Master
 
Aerowood's Avatar

 
1971 21' Globetrotter
Arvada , Colorado
Join Date: May 2006
Posts: 2,807
Currently I just need to find the time to finish mine up, not being to park it at my house long term is killing me. I have another full spring and summer flying schedule again this year with a long mission to New Zealand first.

You are correct on not being able to access good solid design info on some of the truck systems, it's frustrating.
I am looking at the 14k units in size.
__________________

Aerowood is online now   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Advice Needed: Duo Therm Air Conditioner & Heat Pump BKBroiler67 Furnaces, Heaters, Fireplaces & Air Conditioning 19 07-22-2015 05:40 AM
Air Conditioner Bettye Furnaces, Heaters, Fireplaces & Air Conditioning 3 10-08-2011 01:10 PM
Framing for Air Conditioner silver 67 Furnaces, Heaters, Fireplaces & Air Conditioning 2 09-01-2011 05:28 PM
Can you run both Air Conditioners with the Genset? Keyair Classic Motorhomes 4 08-26-2011 05:32 PM
Top air Pump Froze up, cooked the belt John H. Mechanics Corner - Engines, Transmission & More... 16 07-14-2011 07:53 PM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 11:51 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.