Hi folks,

I have 2 NF9FX Danfoss compressors with R404A gas.

These units are cpu cooler devices know as the Prometia Mach II GT. This unit is geared for a 200 Watt max load on the evaporator and temps are around -35 C unloaded and -20 C something loaded.

I know of some thread in another forum where the person increased the size of the condenser and cap tube from .028 to .031 and made the unit hold a quad core i7 load at -35 C -200 Watts. His unit is still single stage.

I would like to know if my units can be cascaded to produce an even higher - C temp with current R404A in each unit and with the upgrades this gentleman made.

Thanks