Sanyo 24KHS72 AC/HP DIY install project

[Xringer]

Originally Posted by AC_Hacker

I'm very interested to hear what your AC tech has to say about your work. I'm also interested to know what he charges you for his allen wrench expertise.

Regards,

-AC_Hacker

%%%%%%%

I've got a 12" pulley wheel from an old Nordic track that might help me out
with the bending that copper. I've done a lot of hardline coax with similar tricks.

" allen wrench expertise."
I just heard that R410A can be handled by an unlicensed end-user..
That it would not be illegal for me to deploy the allen wrench myself.!.

I'm going to check into this. It just might be true, since I've seen full DIY
mini-spits that had plug-n-play pre-pressurized line-sets..
Even if it's a preloaded line set, the homeowner will still have to release the R410A.. (My guess).

Ductless inverter, mini split, wall mounted, high wall, heat pump, split system, 12000


What's your take on it?

Cheers,
Rich

[AC_Hacker]

Originally Posted by Xringer

I just heard that R410A can be handled by an unlicensed end-user..
That it would not be illegal for me to deploy the allen wrench myself.!.

I'd be very interested to know what you find out about this.

Originally Posted by Xringer

What's your take on it?

I called the place that sells them, they said that they're the only place that sells these units. So, it's pretty new...

I can certainly see how this would be a real plus, if the technology is sound. I guess time will tell.

BTW, I asked the sales guy what the HSPF was and he said it was 9.5, which is better than mine is (7.7).

Don't know if you knew this but COP can be derived from HSPF by deviding HSPF by 3.412. So instead of a seasonal average COP of 2.26 (which mine has), this unit has a seasonal average COP of 2.78.

So, if my monthly elec cost to run my minisplit was $50, by running this HSPF 9.5 unit, that cost would be reduced to $40.53. More importantly, the carbon footprint would go down also.

Regards,

-AC_Hacker

[Xringer]

R-410A Certification

"No new EPA certification is necessary for working with R-410A".


Complying With The Section 608 Refrigerant Recycling Rule | Ozone Depletion - Regulatory Programs | U.S. EPA

Refrigerant Sales Restrictions

The sale of ozone-depleting refrigerant (such as R-11, R-12, and R-22) in any size container has been restricted to technicians certified either under the program described in Technician Certification above or under EPA's motor vehicle air conditioning regulations. The sales restriction covers ozone-depleting refrigerant contained in bulk containers, such as cans, cylinders, or drums.

The restriction excludes refrigerant contained in refrigerators or air conditioners with fully assembled refrigerant circuits (such as household refrigerators, window air conditioners, and packaged air conditioners), and HFC refrigerants (such as R-134a and R-410A).

~~~
It looks like anyone can walk into a store and buy R-410A. The EPA must not
think it's all that dangerous..

So far, I'm not getting a clear message that activating your own Mini-split
(using R-410A) is a job that requires any special license from the EPA..

[Xringer]

Got much of the work done today.

Hooking up to the hole-in-the-wall


5/8" copper isn't easy to bend to your will..


Take my word for it, this thing is heavy!


Got some connecting to do!


Copper done.. Got to test it NOW!


Sucking out all the damp air first..


It looks kinda like a 'good' vacuum..


Dang, where did all these wires come from? (Lucky I read the manual)!


Pressure test. Seems to be holding solid. And no bubbles in the liquid soap..


Tomorrow, I'm going to bolt this thing to the slab..



So far, the only disappointment I've had with the vendor supplied 'kit'
(besides the lack of a rear mesh) is the base bolts supplied are too short,
or the rubber feet are too thick. I had to leave out the washers.

My micron gauge is in the mail at last.. When it gets here, I'm going to put
some fresh oil in the vac pump and see what that little RobinAir can do..

Cheers,
Rich

[Xringer]

Checked it this morning and it was still at 200 PSI.

The test for today is 400 PSI. Since that's the range where R410A operates.

Test Start 8:25 AM Oct 31 2009.



12:15
Outdoor temperature is up to 71 degs and the pressure is steady at 425 PSI.
(Up from 60 degs & 410 PSI).

17:40
Outdoor temperature is up to 70 degs and the pressure is steady at 426 PSI.
Disconnecting the gauge set for the night, (All Hallows Eve) but am leaving
the system and hose set pressurized, so I can check it out again on Sunday AM.

Nov 1, 2009 08:55 AM
Outdoor temp got down to 46.4 last night and is currently only 54 degs.
This lower temperature means the pressure will have dropped in the lineset.
I also lost some nitrogen when reattaching the gauge set, so the reading this
morning was down to 397 PSI.

I guess this is the rule of thumb. "·If the ambient temperature changes by 1 , the pressure changes by about 0.03MPa (0.3kgf/f)."
That's in centigrade I believe. (From the Mr. Slim manual posted above).

I'm not even going to do the math, since the sun just came out!!

[Daox]

Woohoo, looks like you've made excellent progress.

[Xringer]

I was reading up on the Mr. Slim last night and it looks like they do a 600 PSI test!
http://www.bdt.co.nz/aircon/data/man...nstruction.pdf

There is a lot of interesting info in that manual.. Good late night reading
for the terminally DIYer..

Edit: Bolted it down before lunch!


And the pressure has gone up about 15 PSI.. It's almost 68 today!

[Xringer]

The city electrical inspector just came by, and we passed inspection!

[Daox]

Woohoo, congrats. What is next on the list?

[Xringer]

Originally Posted by Daox

Woohoo, congrats. What is next on the list?

Waiting for the mailman to bring me a micron gauge from those SLOW guys at Climate Doctors.com.
It's been a full week since I placed the order, and I'm getting impatient.

The USPS tracking is a real joke..


The U.S. Postal Service was electronically notified by the shipper on
October 30, 2009 to expect your package for mailing.
This does not indicate receipt by the USPS or the actual mailing date.

Maybe tomorrow?

Anyhow, once I get a micron gauge, I'll test the lineset to make sure it will hold a vacuum.
If it passes the test, I'll change the oil in the vac pump, then try to create
the best vacuum possible, shut off the pump and see about releasing the R410A into the line set.
I may be able to get one of the AC guys from work to come at noon time.
Just hope he hasn't been drinking his lunch!

There is a simple start-up procedure in the manual, once done, it will be time
to kick back and enjoy a warmer house!

Beside get grumpy at the mailman, all I did today was plug in the shorting handle into the service disconnect box.
I'll use the coupled circuit 20A breakers to apply power to the system when the time comes.

Hey ACHacker, Now I know how you felt when you installed your Sanyo!
By the way, are those 12,000 BTUs keeping your house warm these days?
It's getting cooler around here.. Today was raw.

~~~~~

Edit: Nov 3,2009
Good news! They must have read my email, because they got the package to the post office!


Status: Processed through Sort Facility
Your item was processed through and left our OMAHA, NE 68108 facility on November 2, 2009. The item is currently in transit to the destination. Information, if available, is updated periodically throughout the day. Please check again later.


Bullet Processed through Sort Facility, November 02, 2009, 9:53 pm, OMAHA, NE 68108
Bullet Electronic Shipping Info Received, October 30, 2009

So, I guess the vacuum gauge is going to be here before Friday.?.