GMCforum
For enthusiast of the Classic GMC Motorhome built from 1973 to 1978. A web-based mirror of the GMCnet mailing list.

Home » Public Forums » GMCnet » A/C install
A/C install [message #121995] Sat, 16 April 2011 08:08 Go to next message
lance is currently offline  lance   United States
Messages: 190
Registered: December 2004
Location: Vancouver, WA
Karma: 0
Senior Member
I recently moved my Palm Beach to Texas (got 10.5 mpg once I got out of the mountains!). I've come back to Washington State to move my household goods and have bought a second A/C unit. One isn't enough for the hot Texas sun. Does anyone know if the rear vent is pre-wired for an A/C unit or do I need to run a wire to the breaker panel? The breaker panel has two half breakers for the existing front unit. Not sure what that means. Has anyone done this? I currently have a Fantastic vent in the rear so the original hole has been enlarged. Will this be an issue? Anything else I need to know? I got a 13.5K btu Duotherm that looks much like the original.

1974 Palm Beach
Re: A/C install [message #122000 is a reply to message #121995] Sat, 16 April 2011 08:55 Go to previous messageGo to next message
John Sharpe is currently offline  John Sharpe   United States
Messages: 489
Registered: February 2006
Location: Texas
Karma: 1
Senior Member
Quote:

....vent in the rear so the original hole has been enlarged...


Lance, The a/c takes the standard 14" opening so it should work well with you new unit, if there are not obstructions like a pod or bathroom vent that take up the same real estate. Mine came with a rear air so I don't know if it is pre-wired. I doubt if it is as the rear air on mine was wired with smaller wire than the front since it had an 11000 btu unit. It wasn't a problem changing out to 12 gauge wire.

The 'GMC Classics' are having a rally next month in New Braunsfels and a summer rally in OK in July. I would invite you to our rallys and welcome you as a member.


John Sharpe
Humble,TX
'78 Eleganza TBI
'89 Spectrum 2000 MPI V-10
'40 Ford Panel Delivery TPI
johnasharpe@gmail.com
Re: A/C install [message #122002 is a reply to message #122000] Sat, 16 April 2011 09:27 Go to previous messageGo to next message
lance is currently offline  lance   United States
Messages: 190
Registered: December 2004
Location: Vancouver, WA
Karma: 0
Senior Member
Thanks John,

I'll definately attend the rally in New Braunsfels but will be busy getting settled in so shoot me a reminder. See you there. Anyone else know if the rear vent is pre-wired or how to get a 12ga wire from the vent to the breaker box without ripping out a bunch of panels? Also, do I need to add a breaker?


1974 Palm Beach
Re: A/C install [message #122007 is a reply to message #121995] Sat, 16 April 2011 10:56 Go to previous messageGo to next message
GeorgeRud is currently offline  GeorgeRud   United States
Messages: 1380
Registered: February 2007
Location: Chicago, IL
Karma: 0
Senior Member
When I first bought my 75 Palm Beach, it had the old(nonworking) AC in the rear hole, which I replaced with a nice, new Fantastic Vent. The rear AC was fed power by a Romax cable that was tapped off the overhead outlet in the hall just forward of the rear AC.

I don't know if that was standard or had been retrofitted by the previous owner. Since the wires were fed from the screw terminals of the outlet plug itself (a no-no in electrical codes), I suspect it was done after the coach left the factory.


George Rudawsky
Chicago, IL
75 Palm Beach
Re: A/C install [message #122009 is a reply to message #121995] Sat, 16 April 2011 11:09 Go to previous message
Rick Williams is currently offline  Rick Williams   United States
Messages: 256
Registered: July 2004
Karma: 0
Senior Member
Lance

My '78 is factory wired for rear A/C and the circuit breaker is located at the lower right hand corner of the panel. Your '75 may be different.

Rick


Rick Williams
Bliss, Michigan
1978 Eleganza II
Previous Topic: [GMCnet] Line Lock
Next Topic: Re: [GMCnet] Solar Panels: Anyone try these? they look like agooddeal...
Goto Forum:
  


Current Time: Tue Nov 05 02:32:39 CST 2024

Total time taken to generate the page: 0.00828 seconds