palmeris Posted February 9, 2019 Report Share Posted February 9, 2019 Following this and Glenn other post on 48 volt mini splits and not trying to high jack the thread. Will 2 -12000 btu units be able to provide enough cooling for a well built 5ver? In looking at specs for a new horizons 40 ft unit they put in standard roof top 2 -15000 btu units( not 48vdc). Is there a rating factor of how many btu per sq ft in an rv is required? Would think the other advantage of having a 48 volt battery bank and 48 volt panel array is the 48vdc mini split wouldn't need an inverter and be able to run directly from the panels /battery bank thus eliminating any conversion loss or parasitic inverter draw for the 48 volt loads. Obviously an inverter would be needed for 120 volt circuits and 12 volt circuits .. Haven't done all the math and research yet but my thoughts are by freeing up roof space using the minis with the outdoor units not being up there would allow space for 12 panels at 48 vDC or higher should produce 3600 to 4000 watts based on panels efficiently. 4 strings of 3 panels in series..Is that enough power to run the minis during sunshine hours as well as charging the lifepo4 battery bank back to full charge from the overnight drawdown? Edit 1 unit at 13 hrs = 150 ah x 2 units =300 ah would cover either ac or heat pump modes. Presumed 48volt battery bank would consist of 4 -12 volt packs, each pack having 4 -3.2 volt 1000 ah cells. How many ah could that 4k array put back in that 1000 ah battery bank in an hour with no other loads? Edit 83 amphr derated to 70ah = 4.28 say 5 hrs... Link to comment Share on other sites More sharing options...
DesertMiner Posted February 9, 2019 Report Share Posted February 9, 2019 Is New Horizons now offering the mini-split HVAC as an option? Link to comment Share on other sites More sharing options...
Daveh Posted February 9, 2019 Report Share Posted February 9, 2019 Where does New Horizons mount the mini splits? Dave and Lana Hasper Link to comment Share on other sites More sharing options...
palmeris Posted February 9, 2019 Report Share Posted February 9, 2019 Guys i used them as an example of a quality build compared their standard btu offering for a 40 ft 5th...in speaking with them at the Tampa show they will build whatever you want...outdoor units would be located in a compartment in the basement, anywhere but on roof... Link to comment Share on other sites More sharing options...
GlennWest Posted February 9, 2019 Author Report Share Posted February 9, 2019 All mini splits I know of, with exception of DC units, are 230v of anything over 12k. Most jump over 15k and go to 18k. Are you speaking of Dometic or mini split. 15k dometic is common. 2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1 Link to comment Share on other sites More sharing options...
GlennWest Posted February 9, 2019 Author Report Share Posted February 9, 2019 Also should add, my Pioneer mini split , the ++ unit, cools much better than a 15k roof top Dometic unit. Will 2 12k cool the New Horizons? Should but I can't guarantee it. Fellow rvers doing it and says they have no issue cooling. One particular unit is a 53' converted truck trailer for children missionary work. It is frequent in South Texas, Brownsville. I have conversed with him on Facebook and he declares cooling great. Sees no need for more. Jfyi 2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1 Link to comment Share on other sites More sharing options...
Daveh Posted February 9, 2019 Report Share Posted February 9, 2019 Glenn. I apologize if you answered this before. I am trying to envision your set up with the mini split underneath. What is the clearce from the back of the minisplit to the RV floor? Did you put a protective grate or screen in front of the unit? Are you holding the unit in place with angle iron attached to your frame? Dave and Lana Hasper Link to comment Share on other sites More sharing options...
palmeris Posted February 9, 2019 Report Share Posted February 9, 2019 30 minutes ago, GlennWest said: All mini splits I know of, with exception of DC units, are 230v of anything over 12k. Most jump over 15k and go to 18k. Are you speaking of Dometic or mini split. 15k dometic is common. 48 vdc minis.... http://www.geinnovations.net/Specifications.html Link to comment Share on other sites More sharing options...
GlennWest Posted February 9, 2019 Author Report Share Posted February 9, 2019 4 hours ago, Daveh said: Glenn. I apologize if you answered this before. I am trying to envision your set up with the mini split underneath. What is the clearce from the back of the minisplit to the RV floor? Did you put a protective grate or screen in front of the unit? Are you holding the unit in place with angle iron attached to your frame? Don't know how you thought that. I mentioned considering it. My unit is at the rear of my Teton on a tube steel frame I made. It is attached to the chassis. I am considering putting next underneath. Yes, some sort of screen would have to be utilized. This would be between the frame rails. I have 16" of chassis height there. Now most units don't have this much chassis under them. So not a lot beneath to get debris from tires. Do believe a plate on bottom will work in my application with a wire screen on tire side at bottom covering part protruding past rails. Will try to get under my unit and see if this will work tommorow. Supposed to warm back up. They can fit length ways with chassis. So just frame work in line of fire of debris from tires. 2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1 Link to comment Share on other sites More sharing options...
GlennWest Posted February 10, 2019 Author Report Share Posted February 10, 2019 ok, my unit is 22" tall. It would hang too low in the spare tire area. 2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1 Link to comment Share on other sites More sharing options...
Daveh Posted February 10, 2019 Report Share Posted February 10, 2019 Can you put it sideways? Dave and Lana Hasper Link to comment Share on other sites More sharing options...
GlennWest Posted February 10, 2019 Author Report Share Posted February 10, 2019 6 minutes ago, Daveh said: Can you put it sideways? Would have to call the manufacturer. These units use liquid freon. Likely not. Also the oil has a place to be. Mounted in such a way likely oil not where it needs to be 2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1 Link to comment Share on other sites More sharing options...
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