Home » Public Forums » GMCnet » Vintage air under dash
| Vintage air under dash [message #366604] |
Wed, 08 September 2021 17:39  |
thigh19
Messages: 92
Registered: July 2019
Location: Vancouver Wa
Karma: 1
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So I’ve bought the vintage air slim line under dash unit and the sanden compressor installed, just need to hook them up. What I’d like to do is plumb the lines so I can use the factory air and the vintage air off the same pump. What I’m seeing is everyone uses the factory for heat and the aftermarket as primary. Has anyone done both like I’d like to do? Is it just better to use just the vintage air and not the factory unit?
I need to know how and where to tee off the lines to use both. Pics would be a plus.
Thanx in advance,
Thom
73 Sequoia
Vancouver Washington
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| Re: Vintage air under dash [message #366612 is a reply to message #366604] |
Wed, 08 September 2021 20:29  |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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Had you kept the A6 compressor, others have run 2 evaporators that way. Can’t say about the Sanden which has less capacity. The Y hoses are always what got in the way of me trying to add rear AC, but I think Applied has them now. The Y should be welded in the aluminum tubing section, like GM would do for rear AC in a Suburban or van
John Lebetski
Woodstock, IL
77 Eleganza II
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| [GMCnet] Re: Vintage air under dash [message #366615 is a reply to message #366612] |
Wed, 08 September 2021 22:08 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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John,
We have been supplying the larger capacity Sanden units , so it works well
with the add on unit.
On Wed, Sep 8, 2021 at 6:29 PM John R. Lebetski
wrote:
> Had you kept the A6 compressor, others have run 2 evaporators that way.
> Can’t say about the Sanden which has less capacity. The Y hoses are always
> what got in the way of me trying to add rear AC, but I think Applied has
> them now. The Y should be welded in the aluminum tubing section, like GM
> would do for rear AC in a Suburban or van
> --
> John Lebetski
> Woodstock, IL
> 77 Eleganza II
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
--
Jim Kanomata ASE
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.gmcrvparts.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| [GMCnet] Re: Vintage air under dash [message #366616 is a reply to message #366604] |
Wed, 08 September 2021 22:09 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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Thom,
You should have received the instruction on mounting and connection.
If you did not call me.
On Wed, Sep 8, 2021 at 8:08 PM Jim Kanomata wrote:
> John,
> We have been supplying the larger capacity Sanden units , so it works well
> with the add on unit.
>
>
> On Wed, Sep 8, 2021 at 6:29 PM John R. Lebetski
> wrote:
>
>> Had you kept the A6 compressor, others have run 2 evaporators that way.
>> Can’t say about the Sanden which has less capacity. The Y hoses are always
>> what got in the way of me trying to add rear AC, but I think Applied has
>> them now. The Y should be welded in the aluminum tubing section, like GM
>> would do for rear AC in a Suburban or van
>> --
>> John Lebetski
>> Woodstock, IL
>> 77 Eleganza II
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>>
>
>
> --
> Jim Kanomata ASE
> Applied/GMC, Newark,CA
> jimk@appliedairfilters.com
> http://www.gmcrvparts.com
> 1-800-752-7502
>
--
Jim Kanomata ASE
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.gmcrvparts.com
1-800-752-7502
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| [GMCnet] Re: Vintage air under dash [message #366618 is a reply to message #366616] |
Wed, 08 September 2021 22:42 |
emerystora
Messages: 4442
Registered: January 2004
Karma: 13
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I purchased the larger Sanden from Jim a few months ago and is working well with my original dash evaporator and an 18,000 btu evaporator in parallel.
Emery Stora
> On Sep 8, 2021, at 9:10 PM, Jim Kanomata wrote:
>
> Thom,
> You should have received the instruction on mounting and connection.
> If you did not call me.
>
>> On Wed, Sep 8, 2021 at 8:08 PM Jim Kanomata wrote:
>>
>> John,
>> We have been supplying the larger capacity Sanden units , so it works well
>> with the add on unit.
>>
>>
>> On Wed, Sep 8, 2021 at 6:29 PM John R. Lebetski
>> wrote:
>>
>>> Had you kept the A6 compressor, others have run 2 evaporators that way.
>>> Can’t say about the Sanden which has less capacity. The Y hoses are always
>>> what got in the way of me trying to add rear AC, but I think Applied has
>>> them now. The Y should be welded in the aluminum tubing section, like GM
>>> would do for rear AC in a Suburban or van
>>> --
>>> John Lebetski
>>> Woodstock, IL
>>> 77 Eleganza II
>>> _______________________________________________
>>> GMCnet mailing list
>>> Unsubscribe or Change List Options:
>>>
>>
>>
>> --
>> Jim Kanomata ASE
>> Applied/GMC, Newark,CA
>> jimk@appliedairfilters.com
>> http://www.gmcrvparts.com
>> 1-800-752-7502
>>
>
>
> --
> Jim Kanomata ASE
> Applied/GMC, Newark,CA
> jimk@appliedairfilters.com
> http://www.gmcrvparts.com
> 1-800-752-7502
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
_______________________________________________
GMCnet mailing list
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| Re: Vintage air under dash [message #366840 is a reply to message #366626] |
Fri, 17 September 2021 07:24 |
TR 1
Messages: 348
Registered: August 2015
Location: DFW
Karma: -7
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Senior Member |
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JohnL455 wrote on Thu, 09 September 2021 09:13There’s your answer! And I learned Sandens come in different sizes.
Not only different sizes, but they even make "hot rod" versions of the same size compressor. For example, you have the standard SD7-H15, then they make an "enhanced" version of the same compressor. From what I read, it has tighter tolerances and a bigger "cam" to get more capacity. Its designed for use on buses, ag equipment, etc. The SD7-H15 Enhanced Actually has nearly the same capacity as the A6.
https://www.sanden.com/sd7e.html
Mark S. '73 Painted Desert,
Manny 1 Ton Front End,
Howell Injection,
Leigh Harrison 4bag and Rear Brakes,
Fort Worth, TX
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| Re: Vintage air under dash [message #366881 is a reply to message #366604] |
Mon, 20 September 2021 13:20 |
GatsbysCruise
Messages: 261
Registered: January 2017
Location: Waukegan, Illinois
Karma: 3
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Senior Member |
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Before I was able to get my vent work in the dash under control, I had the under dash unit installed.
My comments will go up and down here so bear with me.
They used the OEM GM compressor saying it had plenty of capacity for both the OEM system and the Newly installed
under dash system.
It was installed and as I ran it, I had plenty of cold air from the under dash unit and from the OEM ac vents.
I have only the OEM evaporator, I did not add a second Evap.
They tied the hoses (freon) under the drivers deck, which would prove problematic later.
I left the heat of Florida and headed home, thoroughly enjoying the cool AC. So the unit works well.
But as I approached Chicago, I noticed that the GMC was warming up inside. By the time I was home, the AC was
dead again.
I had the mechanic go over the system and found the fittings under the floor were not completely tight and all the
gas leaked out.
This seems typical for this shop that did the work.
BE VERY SURE that your fittings are correctly tightened to prevent gas leakage from the system.
As for operation, when it worked, the underdash unit put a lot of COLD air out and with the OEM system assisting
pushing cold air through the dash vents, The RV temps can be controlled easily.
They kept the OEM GM AC compressor saying it had plenty of capacity for the additional under dash unit and
I can't dispute that as it did cool the inside of the RV very well.
I dont know anything about the Sandas unit but if it has the capacity of the GM OEM unit, it should do fine.
GatsbysCruise. \
74GMC260 Former Glacier Model style. \
Waukegan, Illinois \ Keep those MiniDiscs Spinning \ MY GREYHOUND IS FASTER THAN YOUR HONOR ROLL STUDENT \ WindowsXP-Win7-Win8.1-UBUNTU STUDIO - UBUNTU VOYAGER - Berzin Auto Center
[Updated on: Mon, 20 September 2021 13:24] Report message to a moderator |
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| [GMCnet] Re: Vintage air under dash [message #366942 is a reply to message #366881] |
Thu, 23 September 2021 23:08 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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Thom,
Get hold of me for instructions.
On Mon, Sep 20, 2021 at 6:18 PM slc wrote:
> Before I was able to get my vent work in the dash under control, I had the
> under dash unit installed.
>
> My comments will go up and down here so bear with me.
>
> They used the OEM GM compressor saying it had plenty of capacity for both
> the OEM system and the Newly installed
> under dash system.
>
> It was installed and as I ran it, I had plenty of cold air from the under
> dash unit and from the OEM ac vents.
>
> They tied the hoses (freon) under the drivers deck, which would prove
> problematic later.
>
> I left the heat of Florida and headed home, thoroughly enjoying the cool
> AC. So the unit works well.
>
> But as I approached Chicago, I noticed that the GMC was warming up
> inside. By the time I was home, the AC was
> dead again.
>
> I had the mechanic go over the system and found the fittings under the
> floor were not completely tight and all the
> gas leaked out.
> This seems typical for this shop that did the work.
>
> BE VERY SURE that your fittings are correctly tightened to prevent gas
> leakage from the system.
>
> As for operation, when it worked, the underdash unit put a lot of COLD air
> out and with the OEM system assisting
> pushing cold air through the dash vents, The RV temps can be controlled
> easily.
>
> They kept the OEM GM AC compressor saying it had plenty of capacity for
> the additional under dash unit and
> I can't dispute that as it did cool the inside of the RV very well.
>
> I dont know anything about the Sandas unit but if it has the capacity of
> the GM OEM unit, it should do fine.
> --
> GatsbysCruise. \
> 74GMC260 Former Glacier Model style. \
> Waukegan, Illinois \ Keep those MiniDiscs Spinning \ MY GREYHOUND IS
> FASTER THAN YOUR HONOR ROLL STUDENT \ WindowsXP-Win7-Win8.1-UBUNTU STUDIO -
> UBUNTU VOYAGER - Berzin Auto Center
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
--
Jim Kanomata ASE
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.gmcrvparts.com
1-800-752-7502
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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