AC Hacking a Figidaire 5000 BTU
By Shadow Catcher » Fri Jun 10, 2011 6:36 am
I just completed the adaptation of a 5,000 BTU Frigidaire to work with Compass Rose. This was actually a very inexpensive process as I used a close out Frigidaire 5000 BTU that I picked up end of season at Lowes for $50. I had an adapter made to handle a 4 inch ducts by one of the local heating and air conditioning contractors. I had originally thought of using a rather fancy digital thermostat but found that making it play well with the air conditioner was not going well, plus every time it was unplugged I would lose all the settings. What I ended up doing was pulling the thermostat out of the AC unit and mounting it and on off switch in a RadioShack project box.
Wiring is very simple because with a thermostat all I'm doing is looking into the existing wires that control the AC unit, and the power switch basically interrupts the off, cool, fan speed switch.
I figured that the unit would be on high cool all the time, or off as I am pushing air through 4 inch flex duct. Control wires are connected using Anderson power poles and run through the air intake duct.
The ducts run through four-inch Marine deck plates in the side of the trailer.
I ended up having a serious problem with the initial set up and that was icing and the discussion of that is much later in the responses on page 3. The solution however was quite simple, I added in a 4" marine bilge blower rated a 240 CFM and this has taken care of the problem. The pictures are at what
is currently the bottom of this first posting. I do need to refine how this goes together and I will edit the final solution. My feeling is that I can reduce the speed of the blower and the noise produced and now that I know that it works shorten hose and route wires neatly and efficiently.
This is the electrical guts, VERY simple, Note the absence of the thermostat.
I found a second link from the same forum by Don
who converted a single hose unit into a 2 hose unit.
Please visit his link below for more info.
Don used a cake pan for his simple conversion
Now stay tuned for my solutions, as my trailer is much bigger -
and I am trying hard to mostly stay with solar.....
the solution is also a little more complicated , who would have thought ?