Morphing Air Conditioner into Autocascade System

[mytekcontrols]

Reading the charge from the top of that one table, did you charge 4.5oz of R123, 3.5oz R22, and then whatever PSI you had after that, you added another 85 PSI to that worth of R170 and then another 85 PSI R14? Same for the Argon.

If so, wouldn't that make your static pressures go through the roof?

Opps! Slight error instead of 200 psig, it should have been 215 psig static Balance Pressure.

Edit: As it turned out, the static balance pressure when warmed-up, ended up being around 202 psig. I figure that at a +20C ambient, we could see as much as 205 psig.

The R123 and R22 liquids will have a combined vapor pressure of approximately 30-33 psig at normal room temperature. No I'm not kidding, the combination of the two liquids results in a vapor pressure less than R22 alone.

Add to this the combined gas pressure of the R170, R14, and Argon (182 psi), and you'll be somewhere between 212 - 215 psig total static BP.

I'll go upload a corrected test chart with the right BP.

Now the interesting part will be to see if the compressor can start-up with this high of a static pressure, without causing the motor to pull too many amps. If it does, I have 2 choices; increase the expansion tank volume, or add a buffer valve w/timer to bypass the compressor discharge into the existing expansion tank. I prefer the later, since it will allow me to keep my package size small.