What type of refrigerant should I use for the PURY-HP72 system?
The PURY-HP72 uses R410A refrigerant exclusively. Do not use any other refrigerant type, as using the wrong refrigerant may cause the unit or pipes to burst, or result in explosion or fire. The system is designed specifically for R410A, which is a pseudo-azeotropic HFC blend. (Page 3)
From the official Mitsubishi PURY-HP72 Heat Pump manual, page 3
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