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Back wall heating a/c unit install


CHIEFWAHO

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Finally getting around to installing a Coleman Semi Truck Back Wall Heating A/C unit # 46103-8114

 

http://www.airxcel.com/coleman-mach/products/roughneck-marine/backwall-ac-for-truck-cabs

 

Picture of unit:

 

backwall-ac.jpg

 

Had to move the JOBOX (after unloading Jeep spare parts and tools)

The stack bracing will be relocated too.

20170218_154247.jpg

 

Per the instruction diagrams this is how the unit is supposed to mount.

backwall%20ac%20diagram.jpg

 

 

Sleeper interior side and back panels removed.

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Unit mounting plate, trail fitting.

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After a lot of head scratching and careful measurements the holes were cut thru the back sleeper wall.

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Lower stack brace relocated, upper will get the same treatment after unit is hung in place.

20170219_160059.jpg

 

Use a couple of boards to determine depth of standoff bolts for mounting the interior duct assembly.

The supplied standoff's were nowhere long enough so I had to fab some up (guess I forgot pics of those).

20170219_160815.jpg

 

Now ready for final installation of the mounting plate and unit will be ready to hang.

 

Other plans: some sort of insulation and sound deadener on the sleeper walls, install some side windows.

 

 

 

1999 Volvo VNL610, Cummins M11 - 350/400 HP, 10 speed Rockwell - 'CHIEF'

Custom flatbed with TrailerSaver air hitch.

3 cyl 8000 watt Kubota diesel generator.

New Mexico April 2019.jpg

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I have been lusting over one of these for years. I will follow the installation with mas interest. Thanks

Jeff Beyer temporarily retired from Trailer Transit
2000 Freightliner Argosy Cabover
2008 Work and Play 34FK
Homebase NW Indiana, no longer full time

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What are you using to water seal the opening? I am installing a split AC/heat system in the spring and have been wondering how best to water seal.

 

For closed cell foam spray insulation on the sleeper cab ceiling and walls, I plan to go this route as soon as things warm up:

https://sprayfoamkit.com/products/spray-foam-insulation/foam-green-202-closed-cell-spray-foam-insulation-kit/

2004 Volvo 630, Cummins ISX, Eaton 10 speed (air assist clutch), 3.71 3.07 rear locker, ET jr, 200" WB, GearMaster

2017 Forest River Sierra 372LOK

Full time June 2017

DW, 2 kids, and 2 dogs

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What are you going to run it off of.

Will be able to run it 1 of 3 ways: Inverter, shore power or generator.

 

Inverter

99%20Red%20Volvo%2010.jpg

 

Truck has this little gem behind the axle for when we are off the grid.

8000 watt Kubota Generator

8000W%20Kubota%20Generator%201.jpg

 

 

1999 Volvo VNL610, Cummins M11 - 350/400 HP, 10 speed Rockwell - 'CHIEF'

Custom flatbed with TrailerSaver air hitch.

3 cyl 8000 watt Kubota diesel generator.

New Mexico April 2019.jpg

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What are you using to water seal the opening?

Apply lots of 100% clear silicone between the mounting plate and sleeper wall.

 

There is a thick foam gasket that is peel and stick to the mounting plate and then pressure fits to the unit.

backwall%20ac%20diagram.jpg

 

 

1999 Volvo VNL610, Cummins M11 - 350/400 HP, 10 speed Rockwell - 'CHIEF'

Custom flatbed with TrailerSaver air hitch.

3 cyl 8000 watt Kubota diesel generator.

New Mexico April 2019.jpg

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I have been lusting over one of these for years. I will follow the installation with mas interest. Thanks

I'm not sure they are even available any longer?

I had watched this one on eBay for about a year.

Price kept dropping each time they relisted it.

Ended up getting it for less than $1000 and the RV place that had it was semi local so I was able to pickup and not pay shipping.

 

 

1999 Volvo VNL610, Cummins M11 - 350/400 HP, 10 speed Rockwell - 'CHIEF'

Custom flatbed with TrailerSaver air hitch.

3 cyl 8000 watt Kubota diesel generator.

New Mexico April 2019.jpg

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They are still listed on the Airxcel Website. I have seen 1 or 2 recent installations on trucks at shows where I have picked up trailers. I am considering this alternative:

 

http://www.bigrigproducts.com/dometictruckac.html

 

14,000 btu, mounts in side box, condenser mounted outside on back wall.

Jeff Beyer temporarily retired from Trailer Transit
2000 Freightliner Argosy Cabover
2008 Work and Play 34FK
Homebase NW Indiana, no longer full time

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We got a little more accomplished over our busy weekend.

 

Sleeper back wall ready for the mounting plate

20170223_174932.jpg

 

Silicone sealant

20170223_180020.jpg

 

Custom stand offs for the interior grill to mount to

20170223_174733.jpg

 

20170224_143727.jpg

 

 

Guess I forgot to snap a pic of mounting plate bolted in position.

 

 

1999 Volvo VNL610, Cummins M11 - 350/400 HP, 10 speed Rockwell - 'CHIEF'

Custom flatbed with TrailerSaver air hitch.

3 cyl 8000 watt Kubota diesel generator.

New Mexico April 2019.jpg

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  • 3 weeks later...

Ok been awhile, got caught waiting on the sound deadening mat and the weather has not been to cooperative.

Sound deadening mat and foil bubble installation install

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The interior vent/return panel has to be installed before the unit can be hung.

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Waiting on some electrical parts to come in.  Need to blow a hole in the floor of the driver side storage compartment for the unit wiring to come thru.

 

 

1999 Volvo VNL610, Cummins M11 - 350/400 HP, 10 speed Rockwell - 'CHIEF'

Custom flatbed with TrailerSaver air hitch.

3 cyl 8000 watt Kubota diesel generator.

New Mexico April 2019.jpg

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  • 2 weeks later...

Very close to wrapping this up!

Power to thermostat, check.

20170405_181139.jpg

Couch in stalled, it covers the vents.  Don't think this will be a big deal as more than likely it will be laid down as a bed if backwall heat/ac unit is in use.

20170405_181147.jpg

 

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Added a factory cabinet and a microwave while we were at it.

20170405_191257.jpg

This receptacle will be a handy addition too!

20170405_191305.jpg

Porta toilet fits nicely under the couch out of the way.

20170405_181114.jpg

20170405_181130.jpg

 

 

1999 Volvo VNL610, Cummins M11 - 350/400 HP, 10 speed Rockwell - 'CHIEF'

Custom flatbed with TrailerSaver air hitch.

3 cyl 8000 watt Kubota diesel generator.

New Mexico April 2019.jpg

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Nice job.

2000 Kenworth T2000 w/ Cummins N14 and autoshift
2017 DRV Mobile Suite 40KSSB4 with factory mods, dealer mods and personal mods - now in the RV graveyard
2022 DRV Full House MX450 with customized floor plan
2018 Polaris RZR Turbo S (fits in the garage)
2016 Smart Car (fits in the garage or gets flat towed behind the DRV when the RZR is in the garage)
My First Solar Install Thread
My Second Solar Install Thread & Photos and Documents Related to the build
My MX450's solar, battery and inverter system - my biggest system yet!

chadheiser.com      West Coast HDT Rally Website

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Thanks for the compliments all!

Pretty well have it wrapped up!

Gathering all my documentation to present at court house on getting it titled/registered as a Recreational Vehicle in Kansas.

20170409_175615.jpg

Relocated exhaust stack brackets

20170409_085126.jpg

ARB fridge/freezer

20170408_105931.jpg

 

 

1999 Volvo VNL610, Cummins M11 - 350/400 HP, 10 speed Rockwell - 'CHIEF'

Custom flatbed with TrailerSaver air hitch.

3 cyl 8000 watt Kubota diesel generator.

New Mexico April 2019.jpg

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  • 3 weeks later...
1 hour ago, oldride said:

On the couch was this from a van or didi you use something like a futon sofa?

Not sure what it is or out of.  Was already there when we purchased truck.

 

 

1999 Volvo VNL610, Cummins M11 - 350/400 HP, 10 speed Rockwell - 'CHIEF'

Custom flatbed with TrailerSaver air hitch.

3 cyl 8000 watt Kubota diesel generator.

New Mexico April 2019.jpg

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  • 1 month later...

The back wall unit performed great.  Just returned from a 10 Jeep trip.  Slept in the truck and couple nights and ran the unit A/C on shore power.  It will flat freeze you out if need be.  It is a little loud & do wish it had adjustable fan speeds.

And yes I was hauling a full size refrigerator on the truck.  I loaded it with pre-cooked BBQ and fed about a 100 of my Jeep friends one evening.  Plus it's handy to keep several beers cold!

Parked one evening at Moss Field, Webster Groves, MO.  Cousin is the head football coach.

Moss%20Field%20Parking%20June%202017.jpg

 

 

1999 Volvo VNL610, Cummins M11 - 350/400 HP, 10 speed Rockwell - 'CHIEF'

Custom flatbed with TrailerSaver air hitch.

3 cyl 8000 watt Kubota diesel generator.

New Mexico April 2019.jpg

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  • 2 months later...

Could you get more pics of how that generator is mounted in your bed? Also on the sound deadening stuff. I have good luck with Peel-Seal-Instant-Waterproof-Repairs-6-in-x-25-ft-Aluminum-Roll-Flashing Its priced good. And I put it on the doors of my Koidak. And it went from sounding like a tin can. To solid and 75% quieter then before.

Pete

 

 


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