Home » Public Forums » GMCnet » [GMCnet] REMOTE AUXILIARY A/C AND HEAT
| [GMCnet] REMOTE AUXILIARY A/C AND HEAT [message #238483] |
Sun, 02 February 2014 10:07  |
Thomas Pryor
Messages: 143
Registered: January 2011
Karma: 1
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Has any one installed a remote (rear) A/C Heater unit from a GM SUV or
similar size?
I Believe the OEM A/C compressor has excess capacity to support this
modification.
MY QUESTIONS ARE:
What restrictions exist on the A/C hose length from the compressor to the
interior unit ?
Is a solenoid valve required to stop Duracool flow to the remote unit.
If solenoids are required, are they required on both legs of the A/C
plumbing?
I looked thru the Photo archives but could not find a posting.
The folks at Vintage Air were not helpful as they sell their unit as a
stand alone installation not an auxiliary unit.
Any info would be great value as I reassemble MAYDAY.
--
Regards,
Tom Pryor.
4188 Limerick Dr
Lake Wales, Fl 33859
Cell 248 470 9186
Living on a waterfront is not a matter of life or death. Its more
important than that.
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| Re: [GMCnet] REMOTE AUXILIARY A/C AND HEAT [message #238526 is a reply to message #238525] |
Sun, 02 February 2014 14:05  |
Otterwan
Messages: 946
Registered: July 2013
Location: Lynnwood (north of Seattl...
Karma: 0
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Don't know about AC, but I had a Chevy van with a rear heater unit plumbed in much the way our water heaters are. Worked really well, and would be a simple install using the existing hoses.
1977 Birchaven, Lynnwood WA - "We may not be able to stop all evil in the world, but I know that how we treat one another is entirely up to us."
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| Re: [GMCnet] REMOTE AUXILIARY A/C AND HEAT [message #238572 is a reply to message #238529] |
Sun, 02 February 2014 18:58 |
k2gkk
Messages: 4452
Registered: November 2009
Karma: -8
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I don't remember whom it was, but somebody here has added an underseat radiator (such as used in school buses) and added appropriate water lines from the existing heater core circuit for rear coach heat.
I'll just becha that somebody will be able to point you to the information, Espen.
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
~~ ~ D C "Mac" Macdonald ~ ~~
~ ~ Amateur Radio - K2GKK ~ ~
~~ k2gkk @ hotmail dot com ~~
~ ~ USAF and FAA, Retired ~ ~
~ ~ ~ Oklahoma City, OK ~ ~ ~
~~ ~ ~ "The Money Pit" ~ ~ ~~
~ ~ ~ ex-Palm Beach, 76 ~ ~ ~
~~ k2gkk + hotmail dot com ~~
~ www.gmcmhphotos.com/okclb ~
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> To: gmclist@temp.gmcnet.org
> From: bimet@online.no
> Date: Sun, 2 Feb 2014 14:16:33 -0600
> Subject: Re: [GMCnet] REMOTE AUXILIARY A/C AND HEAT
>
>
>
> I had a Ducoh in mine ( http://www.bdub.net/publications/AuxHeater/auxheater1.html ) but it is beond repair.
> I would like to get an aux heater unit however and mount it in the rear dinette, should be a pretty easy task :)
> --
> 1973 26' Parrot green Seqouia in Norway
> "Loffen" translates to white bread, it is also a nick name for your.. well you know..down there.. and it was my dog's name, but hey you can also call me Espen ;)
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| Re: [GMCnet] REMOTE AUXILIARY A/C AND HEAT [message #238598 is a reply to message #238483] |
Mon, 03 February 2014 08:20 |
Erv Troyer
Messages: 125
Registered: February 2004
Location: Lagrange, IN
Karma: 0
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| Thomas Pryor wrote on Sun, 02 February 2014 10:07 |
Has any one installed a remote (rear) A/C Heater unit from a GM SUV or similar size?
I Believe the OEM A/C compressor has excess capacity to support this modification.
MY QUESTIONS ARE:
What restrictions exist on the A/C hose length from the compressor to the interior unit ?
Is a solenoid valve required to stop Duracool flow to the remote unit.
Tom Pryor.
4188 Limerick Dr
Lake Wales, Fl 33859
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I was in the custom truck sleeper industry for 12 years, and we installed a "slave unit" in all the bigger sleepers. These were simply teed into the high and low pressure line of the original AC system - no solenoids needed.
I installed one like this in our 1974 GMC and it produces a lot more cooling than the original leaky underdash unit.
Erv Troyer Lagrange, IN
74 Sequoia
reo43@aol.com
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| Re: [GMCnet] REMOTE AUXILIARY A/C AND HEAT [message #238602 is a reply to message #238483] |
Mon, 03 February 2014 09:02 |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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I often considered this and figured the criteria was a pre 94 R12 unit from a Suburban. Bought on on Ebay and the guy shipped a late model Ford van unit 134a. It was cheap so I just have it taking up shelf space.
John Lebetski
Woodstock, IL
77 Eleganza II
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| Re: [GMCnet] REMOTE AUXILIARY A/C AND HEAT [message #238628 is a reply to message #238528] |
Mon, 03 February 2014 12:04 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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I had a couple o Subuirban company rides which had the rear A/C. I asked my cousin the HVAC engineer, he said there's no shutoff or anything necessary. When you turn the fan on, the air flow across the expansion valve in the back evaporator will open it and let refrigerant flow through the aux evaporator. Turn the fan off, the evap quickly cools and closes the expansion valve. The compressor has sufficient reserve to run both evaps, if you're only using one it will simpkly cycle off more often.
--johnny
'76 23' transmode norris
________________________________
From: Gary Berry <duallycc@gmail.com>
To: "gmclist@temp.gmcnet.org" <gmclist@temp.gmcnet.org>
Sent: Sunday, February 2, 2014 3:11 PM
Subject: Re: [GMCnet] REMOTE AUXILIARY A/C AND HEAT
I think that Larry Shaffer of GMC-49r fame did this, but he only ran it to
the frontroom area and not all of the way back to the bedroom. I thought
that I had heard somewhere that our system only uses about 1/3 of the
capacity of the stock AC compressor.
--
Gary and Diana Berry
73 CL Stretch in Wa.
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Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: [GMCnet] REMOTE AUXILIARY A/C AND HEAT [message #238639 is a reply to message #238628] |
Mon, 03 February 2014 13:04 |
emerystora
Messages: 4442
Registered: January 2004
Karma: 13
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Senior Member |
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AND, it doesn't matter if the unit was for R12 or R134a. Either will work.
Someone had posted that they had a Surburban on their shelf but it was for 134a.
They can use it as an aux. evaporator. It will have its own expansion valve. Just put the hoses in parallel with the existing hoses.
You can see an example here:
http://www.gmcmhphotos.com/photos/g3356-aux-air-conditioner-evaporator.html
I have also listed where I got the hoses made tha have a tee and a fitting for the original hoses on the end.
Emery Stora
On Feb 3, 2014, at 11:04 AM, Johnny Bridges <jhbridges@ymail.com> wrote:
> I had a couple o Subuirban company rides which had the rear A/C. I asked my cousin the HVAC engineer, he said there's no shutoff or anything necessary. When you turn the fan on, the air flow across the expansion valve in the back evaporator will open it and let refrigerant flow through the aux evaporator. Turn the fan off, the evap quickly cools and closes the expansion valve. The compressor has sufficient reserve to run both evaps, if you're only using one it will simpkly cycle off more often.
>
> --johnny
> '76 23' transmode norris
>
>
>
>
>
>
> ________________________________
> From: Gary Berry <duallycc@gmail.com>
> To: "gmclist@temp.gmcnet.org" <gmclist@temp.gmcnet.org>
> Sent: Sunday, February 2, 2014 3:11 PM
> Subject: Re: [GMCnet] REMOTE AUXILIARY A/C AND HEAT
>
>
> I think that Larry Shaffer of GMC-49r fame did this, but he only ran it to
> the frontroom area and not all of the way back to the bedroom. I thought
> that I had heard somewhere that our system only uses about 1/3 of the
> capacity of the stock AC compressor.
>
> --
> Gary and Diana Berry
> 73 CL Stretch in Wa.
>
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| Re: [GMCnet] REMOTE AUXILIARY A/C AND HEAT [message #239519 is a reply to message #238639] |
Tue, 11 February 2014 09:54 |
corleyw
Messages: 130
Registered: June 2007
Location: Battle Ground, WA
Karma: 0
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| emerystora wrote on Mon, 03 February 2014 13:04 |
AND, it doesn't matter if the unit was for R12 or R134a. Either will work.
Emery Stora
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Agree. That unit should work fine. Be sure to flush out any old oil well!
Emory,
I am curious about your great looking installation of the additional A/C evaporator. You chose to cut a hole in the back of the unit, and allow the old A/C air to pass into the new unit (if I am looking at it correctly). At first glance, this would seem to be counter productive, given that it seems the old air is fighting air passing through the evaporator. I probably don't understand the way it works, can you please elucidate? I don't in any way mean this as a criticism, I just wonder why you didn't just let the old air pass behind the new unit instead of plumbing it through the new unit.
By the way, thanks for posting the source for your parts, I see that place has a wealth of parts available for A/C installs. I had not realized that a wall unit like yours was even made. I'd been thinking of an under the passenger seat install, but yours is making me rethink...
Corley
Corley
'76 Glenbrook
29 other vehicles
[Updated on: Tue, 11 February 2014 10:00] Report message to a moderator |
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| Re: [GMCnet] REMOTE AUXILIARY A/C AND HEAT [message #239521 is a reply to message #238639] |
Tue, 11 February 2014 10:25 |
rjw
Messages: 697
Registered: September 2005
Karma: 4
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I went to Danhard's website and can't see where you are able to purchase their products. Probably because they sell mainly to OEM and Dealers. Do they sell direct?
Richard
76 Palm Beach
SE Michigan
www.PalmBeachGMC.com
Roller Cam 455, TBI+EBL, 3.42 FD, 4 Bag, Macerator, Lenzi (brakes, vacuum system, front end stuff), Manny Tranny, vacuum step, Tankless + OEM water heaters.
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| Re: [GMCnet] REMOTE AUXILIARY A/C AND HEAT [message #239682 is a reply to message #239519] |
Wed, 12 February 2014 11:03 |
emerystora
Messages: 4442
Registered: January 2004
Karma: 13
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Senior Member |
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NO, you are looking at in incorrectly. I didn't cut any holes for the original air to flow through the new unit. The original setup is still in place and flows through the original dash outlets. The new unit is a stand alone unit and the hoses are in parallel with the original. I just placed it below the dash because it fit well there. I could have run longer hoses and placed it anywhere else in the motorhome.
The air flow for the new unit is that it draws air from the bottom louver and it flows through its evaporator core and is blown out through the outlets at the top.
Emery Stora
>
>
On Feb 11, 2014, at 8:54 AM, Corley Wooldridge <corley@corleyw.com> wrote:
>
>
> emerystora wrote on Mon, 03 February 2014 13:04
>> AND, it doesn't matter if the unit was for R12 or R134a. Either will work.
>>
>> Emery Stora
>
>
> Agree. That unit should work fine.
>
> Emory,
>
> I am curious about your great looking installation of the additional A/C evaporator. You chose to cut a hole in the back of the unit, and allow the old A/C air to pass into the new unit (if I am looking at it correctly). At first glance, this would seem to be counter productive, given that it seems the old air is fighting air passing through the evaporator. I probably don't understand the way it works, can you please elucidate? I don't in any way mean this as a criticism, I just wonder why you didn't just let the old air pass behind the new unit instead of plumbing it through the new unit.
>
> By the way, thanks for posting the source for your parts, I see that place has a wealth of parts available for A/C installs. I had not realized that a wall unit like yours was even made. I'd been thinking of an under the passenger seat install, but yours is making me rethink...
>
> Corley
>
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| Re: [GMCnet] REMOTE AUXILIARY A/C AND HEAT [message #239684 is a reply to message #239521] |
Wed, 12 February 2014 11:04 |
emerystora
Messages: 4442
Registered: January 2004
Karma: 13
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They sold to me directly several years ago when I bought from them. Call them on the phone and I expect they would sell to you.
Emery Stora
On Feb 11, 2014, at 9:25 AM, RJW <mygmc@palmbeachgmc.com> wrote:
>
>
> emerystora wrote on Mon, 03 February 2014 14:04
>> http://www.gmcmhphotos.com/photos/g3356-aux-air-conditioner-evaporator.html
>>
>> I have also listed where I got the hoses made tha have a tee and a fitting for the original hoses on the end.
>>
>> Emery Stora
>
>
> I went to Danhard's website and can't see where you are able to purchase their products. Probably because they sell mainly to OEM and Dealers. Do they sell direct?
>
> --
> Richard
> 76 Palm Beach
> SE Michigan
> www.PalmBeachGMC.com
>
>
> Coop Roller Cam 455, Howell TBI + EBL, 3.42 FD, Quadra Bag, Manny Tranny, Control Arm Brake Upgrade (to be installed)
>
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| Re: [GMCnet] REMOTE AUXILIARY A/C AND HEAT [message #239764 is a reply to message #239682] |
Wed, 12 February 2014 18:00 |
corleyw
Messages: 130
Registered: June 2007
Location: Battle Ground, WA
Karma: 0
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| emerystora wrote on Wed, 12 February 2014 11:03 |
NO, you are looking at in incorrectly. ...
Emery Stora
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Emery, Thanks for straightening me out. I saw the grey area and thought it was a hole in the back. I was wrong... Looks like a nice installation!
Thanks again,
Corley
Corley
'76 Glenbrook
29 other vehicles
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