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Vintage air under dash

TH
Thom High
Wed, Sep 8, 2021 10:39 PM

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

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
JR
John R. Lebetski
Thu, Sep 9, 2021 1:29 AM

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

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
JK
Jim Kanomata
Thu, Sep 9, 2021 3:08 AM

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 gransport7087@gmail.com
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
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--
Jim Kanomata ASE
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.gmcrvparts.com
1-800-752-7502

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 <gransport7087@gmail.com> 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
JK
Jim Kanomata
Thu, Sep 9, 2021 3:09 AM

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 jimkanomata@gmail.com 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 gransport7087@gmail.com
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

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 <jimkanomata@gmail.com> 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 <gransport7087@gmail.com> > 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
ES
Emery Stora
Thu, Sep 9, 2021 3:42 AM

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 jimkanomata@gmail.com 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 jimkanomata@gmail.com 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 gransport7087@gmail.com
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
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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 <jimkanomata@gmail.com> 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 <jimkanomata@gmail.com> 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 <gransport7087@gmail.com> >> 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:
JR
John R. Lebetski
Thu, Sep 9, 2021 2:13 PM

There’s your answer!  And I learned Sandens come in different sizes.

John Lebetski
Woodstock, IL
77 Eleganza II

There’s your answer! And I learned Sandens come in different sizes. -- John Lebetski Woodstock, IL 77 Eleganza II
MS
Mark Sawyer
Sat, Sep 18, 2021 11:36 PM

JohnL455 wrote on Thu, 09 September 2021 09:13

There’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

JohnL455 wrote on Thu, 09 September 2021 09:13 > There’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
S
slc
Mon, Sep 20, 2021 6:20 PM

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

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
JK
Jim Kanomata
Fri, Sep 24, 2021 4:08 AM

Thom,
Get hold of me for instructions.

On Mon, Sep 20, 2021 at 6:18 PM slc NuHorizon@yandex.com 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

Thom, Get hold of me for instructions. On Mon, Sep 20, 2021 at 6:18 PM slc <NuHorizon@yandex.com> 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