One of them. It used to be a dehumidifier, one of the old school brown boxes. It runs off r22 and has not been modified as far as the refrigerant circuit goes. It was torture tested in a few different configurations. I got a couple of extra degrees of operating out of it by catching the condensate and warming it with the compressor discharge line. When the klixon switch opened, a little fountain pump sent the warm water up to the frosted evaporator coil and sped up the defrost operation.
The window unit was equipped with a reversing valve and a defrost control that could be wired with the same type of switch or a thermistor. I ended up using a thermistor because it was adjustable.
Last edited by jeff5may; 10-27-14 at 12:07 PM..
Reason: spell check
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