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Old 07-22-2022, 07:25 PM   #1
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1988 GMC - running Carrier AirV while driving

Okay guys! I have a 1988 GMC diesel (35 ft?) that has an air conditioning unit already installed in the roof, wiring and conduits already run, but cut off when they come out under the bus. This used to be a mobile children's playground, so I assume had the AC functional!

Right now, I'd like to know what I'd have to do to hook the unit up and get it running direct off DC power while the bus is driving, no solar (working with my very busy uncle who is a master electrician on the solar set up - using panels we had planned to put on our house etc - long story).

I have a 3000w 24v inverter on the way, since research shows the AC runs at about 1200, starts at 1680 I believe.

I should say: this is not yet a living skoolie, nor will it be a conventional one. Its intended purpose is more "dog emergency transport in case of wildfires etc", "mass dog vet visits/adoption events", with a small open "bedroom" designated area for sleeping on the road - we are nowhere near that. Right now I just need drives with AC going while we drive.

Please feel free to be very basic and kindergarten here. I'm forcing myself to learn mechanical/electrical stuff despite it making me go cross eyed, because I don't have any reliable mechanically inclined people in my life.


Will update with any info as needed. Thanks!

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Old 07-22-2022, 08:01 PM   #2
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Location: Columbus Ohio
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Year: 1991
Coachwork: Carpenter
Chassis: International 3800
Engine: DTA360 / MT643
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when you say carrier A/C.. is this an electric rooftop camper A/C or is this a carrier Bus unit that hangs on the inside of the bus at the rear?



reason i ask is one is desaigned for camping (120 volts).. and the latter is actual road A/C, designed to be run while driving.. if the hoses are cutoff underneath it sounds like it was once a bus A/C for driving and someone was ripping it out to convert the bus...
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Old 07-22-2022, 09:26 PM   #3
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Quote:
Originally Posted by WagabondDogRescue View Post
Okay guys! I have a 1988 GMC diesel (35 ft?) that has an air conditioning unit already installed in the roof, wiring and conduits already run, but cut off when they come out under the bus. This used to be a mobile children's playground, so I assume had the AC functional!

Right now, I'd like to know what I'd have to do to hook the unit up and get it running direct off DC power while the bus is driving, no solar (working with my very busy uncle who is a master electrician on the solar set up - using panels we had planned to put on our house etc - long story).

I have a 3000w 24v inverter on the way, since research shows the AC runs at about 1200, starts at 1680 I believe.

I should say: this is not yet a living skoolie, nor will it be a conventional one. Its intended purpose is more "dog emergency transport in case of wildfires etc", "mass dog vet visits/adoption events", with a small open "bedroom" designated area for sleeping on the road - we are nowhere near that. Right now I just need drives with AC going while we drive.

Please feel free to be very basic and kindergarten here. I'm forcing myself to learn mechanical/electrical stuff despite it making me go cross eyed, because I don't have any reliable mechanically inclined people in my life.


Will update with any info as needed. Thanks!
-----------------

Welcome! It's great you want to read more. Lots of terrific folks have documented their experiences with skoolie.net.

Please answer CKs question. Your description of the conduit & start/run wattage is that of a popular 120v/12k btu model.

Those work well in small Rvs with good insulation, but only when parked. For that, you'll need at least an extension cord & a new cord-cap for the wires.

The search feature at the top of the page, is a great way to learn more. Search>
"rooftop AC" + "CadilacKid"
CK schools skoolies about bus ACs.


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