Mini-split two heads and Transformer

[ArtGill]

This is a picture posting test

[ArtGill]

file:///C:/Users/Owner/Pictures/2016-07-10/Base%20plate.gif
Picture test

[ArtGill]

another picture test

[ArtGill]

I give up trying to post pictures, for tonight.

[HB of CJ]

Just so we are still on the same wave length here.  You are going to cover up and delete not one but both roof escape hatches to install your A/C?  Will both roof escape hatches still be usable as vehicle escape routes?  Respectfully.

[eagle19952]

file:///C:/Users/Owner/Pictures/2016-07-10/Base%20plate.gif
Picture test

you have to upload  your pictures on the internet...like photobucket.com first...you can't upload directly from your computer user file to this site...

[brmax]

Possibly resizing them so when your mouse is over them and if they show to be less than 128 kb, this usually loads ok and just makes another at the smaller size in your files.
Its a trial doing it as figuring out if 180 x 240 is going to be small enough, so this is leading to joining one of the photo sites  and learning their ops.

Floyd

[robertglines1]

I still get flustered posting pictures here. I go to BGM and post and direct someone who needs to view to go there. I have 2 splits in house and three in bus. Very happy. Condensate has been only challenge.  Bob

[luvrbus]

F/B is the place to post photos so easy there just click our Eagles board lets you post too  no easy either.I am sure if we chipped in a few coins Gary and Mike could make it happen in case one hasn't noticed this board has a lot of members that could eat up hosting space.I don't if it's fact or not but I have been told you guys help pay for the BGM board is that true ?

[robertglines1]

I made a donation. Well worth it. Would be glad to do same here! Wouldn't take to many 10 or 20's to add up.  There are no adds on BGM . Strictly a observation. I am a long time member of both. Thanks for the free access. Donation toward operating expenses here just say the word. Set up a pay pal and I'll chip in.  Bob

[luvrbus]

I am like you Bob I gave up trying to post pictures here because I never could make it work,but I can see the point the photos eat up a lot of data on some peoples internet plan just to open.
LOL I rag on Gary every time I see him about hosting photos just because I cannot get the hang of posting photos some where else and then getting them back here.

I had to get Dave5C to help me when I put photos in a folder and couldn't retrieve the photos he made it look so easy.  I put some photos in cloud he couldn't even retrieve they are lost forever I guess     

[tbfisher]

My project is to install a mini-split with two heads.  My present design is to run the 220v ac units using a transformer that has 120 vac in.  These unit are a ceiling cassette units that I will mount in the ceiling where the escape hatches were/are.
I have taken the first step and purchased a Daikin system with an 18,000 btu outside unit, a 9000 btu cassette for the bedroom and a 12,000 btu cassette for the front of my bus.  I decided on the Daikin brand because: You can get parts to repair, it has county wide support and my technical support source and friend recommended Daikin.  Daikin is widely available and sold in many areas by United Refrigeration (UR).
So far I have opened one cassette and I am studying the manual.  I need to design a mount and a weatherproof box to fit over the cassettes.
 

   VERY interesting. I am also considering installing a 24KBtu+ mini-split system, albeit in my 05 42ft Monaco Dynasty coach. This is to replace the 3 aging, VERY NOISY and inefficient Dometic Penguin roof ACs.  I think I have 220V available from the 10KV Onan genset but since the whole coach is only wired for 110V, I would like to run it from 110V using something like: http://tinyurl.com/hr5gd8t IF practical.
   
   I am told that the startup current on these inverter condensers is no problem for the transformers but would like to hear some actual experience BEFORE I start spending $$ on a system. Have you tested this yet?
 
  Also, I do have a ~ 5"D x 12"W channel in the current ceiling that runs the length of the coach. It currently contains ducting, condensate drains and the wiring for the roof ACs. I'm pretty sure that with thoughtful modification, I can mount 2-3 ceiling cassette units with refrigerant lines and necessary cabling in there.

  This leaves the question of where to mount the condenser unit ?? Ideas??

TBoone Fisher
Granbury, TX

[Oonrahnjay]

    I have basic questions I'm trying to understand.  Is there an issue of taking 120V half-phase power and running it through a transformer to 240V?  Do you get a full phase (i.e. 120V up and 120V down, on the oscilloscope)?  If not, is there any problem with this?

[tbfisher]

    I have basic questions I'm trying to understand.  Is there an issue of taking 120V half-phase power and running it through a transformer to 240V?  Do you get a full phase (i.e. 120V up and 120V down, on the oscilloscope)?  If not, is there any problem with this?

   The main problem as I see it is will the transformer/converter handle the startup current of the condenser. As I understand it, these inverter condensers startup much more gradually than a conventional outdoor condenser/compressor. This results in a much lower startup current spike. Am I correct?

TBoone Fisher
Granbury, TX

[Oonrahnjay]

   The main problem as I see it is will the transformer/converter handle the startup current of the condenser. As I understand it, these inverter condensers startup much more gradually than a conventional outdoor condenser/compressor. This results in a much lower startup current spike. Am I correct?

TBoone Fisher
Granbury, TX

    Yes, that's correct but it's kind of "how long is a piece of string" sort of thing.  The real question will be "will the reduced startup spike be reduced enough".