heat pump technical question
I have done some reading and studied the R410a phase diagram. I keep coming up with the compressor discharge pressure being 550 psi when the discharge vapor is 139 F. Since the line goes directly to the inside unit condenser through an oil separator, a 4-way valve, and a muffler (no serious restrictions), I can't understand why the pressure in the inside unit condenser wouldn't also be 550 psi.
Yet the specs from Mitsubishi say the condensing pressure and temperature is 309 psi and 97F.
I just don't understand!