While waiting on my new studs for the tag axle I started closing loose ends, things I've been waiting to do. First on the list was to build some type of plenum for the mini split compressors to divert all the hot air from the compressor out the vent in the bottom of the AC compartment. I had some of the double sided aluminum poly core sign board left so that is what I used. I have 2 compressors so the material I have left over from the slide remodel will be slim, I improvised by using polycarbonate panel that I had laying around it wasn't to make it look good just so I can finish the project without buying another 4'x8' sheet of the sign board then have to drive to Joplin to get it.
Thanks Steve no sir I'm done soon as I finish the other side. We did however install WiFi remote control via Cielo module and you can place it in different locations to find the best spot for overall temperature control. The remote controls either had you to cold or hot depending on the location of the remote made for a house more than an RV.
Jack
That looks great, you always impress.
As you know I vent thru the floor too, and was concerned with exhaust bleeding to intake so I put half a peice of snap together ducting on the ground between the vent holes underbelly kinda like a an a frame tent but there is no frame. It absolutely works separating the exhausted air but I've seen no real effect on the performance
Arch & Mary Jones
1997 Newell #463
Williamsburg, VA or Gettysburg, PA
(depending on what day it is)
Arch your ductwork is a piece of art, who ever made those has his stuff together. I had no problem with nothing between the intake and exhaust of the mini splits all summer but did notice it was hot in that bay so this should cure that.
Thanks Simon, you fabricate a lot and if you ever need something strong and lite I recommend that sign board, not cheap $220 1/4" thick 4x8 panel.
(09-15-2023, 04:05 AM)Jack Houpe Wrote: Thanks Simon, you fabricate a lot and if you ever need something strong and lite I recommend that sign board, not cheap $220 1/4" thick 4x8 panel.
$220 is cheap compared to how many Benjamins have been evading my wallet lately!
Reviving this thread… How did these mini-split units perform after being installed over a summer please?
After all my work and $$$$ spent on upgrading and fixing the old SCS basement systems I now wonder if I should have just went with the DUCTED Mini-Split unit. I think I could have just connected the mini-split to the existing duct work in the front and rear but would the air handler have enough oomph to push air all the way to the rear of the coach? I have probably killed $3k easily on fixing this SCS system but it now works on 24-volt and uses Ecobee thermostats… It sure would have been nice to be able to run this all off of solar and batts… would a slow-start help with running off batteries or should I punt and buy a Prevost? :-(
After 3 years it still performing better than any bus or coach I've been in both summer and winter has been a comfort but we have 3.5 tons total heat pumps. Arch and Hank did the ducted unit unit and I used internal evaporators. The unit in the bedroom of the Newell is 1.5 tons and if I had to do it over again I would go with 9k btu as its way to cold in there even in the summer at 105 oust side temp. If you go with a ducted unit make sure its a high CFM airflow as the ductwork can slow the velocity of air. Our Prevost bus is 2 ton with 3 zones and its perfect but its only 40 feet long and NO slides, it also has 3 internal evaporators.
Thanks Jack! Did you convert the ‘over the road’ AC unit? I like the idea of using the existing ducting but I’ll have to get over all the $ spent on the SCS units first before the CFO allows me to reconcile my mistake… I think we will want a 40’er eventually so we can get into State/Natl parks easier… and I like the idea that the Prevost is pretty much ready to go for the AC conversion… just have to find one that doesn’t already have roof airs… I saw yours and really liked what you did with it… We probably will never live in a coach for an extended time again but who knows… I do have a big job coming up in Dallas possibly soon and will use the coach as an apartment like I used to…
