Lower Bay Mini Split AC size

[luvrbus]

LOL my friends found out real fast you don't use the clear tubing that came with the unit for drains that stuff will grow tomatoes on the inside

[somewhereinusa]

I got the front air conditioner finished today,      it's not really all that hot today, but they cool things down nicely.



The condensor is nestled between the frame rails in front, not sure if I will have to do some extra ducting to get the air flow right. These things don't really seem to move all that much air, even when things are running hard after the initial slow start. Time will tell. Have I mentioned how QUIET they are?

This view is from in front of the right front tire, pretty open to the fan, there is quite a bit of air movement out this general direction.



Same side viewed from the front.



Other side viewed from the front. It doesn't hang down as far as the front entry step and is farther back.



I was able to use the larger copper line this time, I slit the insulation lengthwise, then but it back on after I had it installed. Looking back I probably should have done this onthe rear installation. With the insulation on I couldn't get a good "feel" when I was bending the line and kinked it.  I also didn't plan well enough for the line routing in the rear and changed it a number of times. I would recommend using some sort of hose for a test fit to see if your routing is what you really want.  If I have trouble with the rubber hose in the back I may go the same route. Lines go around the windshield on right side. Overall I am quite pleased with the whole thing. Measuring the power required to run, they could both be run on one 20A circuit. Only time will tell if things hold up in the bus environment.

[Darkspeed]

Looks good!

[solodon]

As I understand your captions, it seems the lines are facing the front of the coach.  I'm the paranoid type and would probably construct some sort of guard around the front of the installation to protect from possible road debris.  Just a thought.

[somewhereinusa]

There is a guard, just not in place in the picthre. I've been thinking about making a larger one though.

[luvrbus]

How do guys lower the head pressure on a Fujitsu and what type fan would you use.I have friend his air intake is from the bottom of the bay and they are supposed to work with a ambient temperature of 120 degrees. 

They do fine parked on gravel but won't work will driving in the AZ heat.Could it be the vacuum created by driving over powers the condenser fan we tried to buy a larger motor to no avail he is stuck with his motor.FWIW his will kick out even parked on blacktop at 117 degrees he went through that all last week having to soak the area with water around his bus   

[Darkspeed]

luvrbus, I helped install one of these on a mobile split as a supplement (1870 cubic feet per minute)> http://www.amazon.com/dp/B009OBP5A6/ref=wl_it_dp_o_pC_nS_ttl?_encoding=UTF8&colid=6WD6XSYQYTIJ&coliid=I2QOD11WZMOI8D

You may need a puller or pusher depending on application - sounds like a swarm of bees but it did the trick.

The OEM split fan is not designed for any static positive / neg pressure caused by a moving vehicle.

[luvrbus]

That is what we have on the units now they help but he would like 120v fans

[Darkspeed]

That is what we have on the units now they help but he would 120v fans

You tried a Spal high pressure fan? or just some aux fan?

Are you saying he need a 120vac solution?

If 120vac he could use a big squirrel cage fan on the exit side of the unit.

[sledhead]

I use a 10 " fan like this with a dimmer switch to control the speed

http://www.amazon.com/dp/B00070KIFK?psc=1 

ducted after the split unit then through the floor . works great and has for years

dave