Mitsubishi Electric MXZ-SM72TAM-U1 Service Manual page 122

Total refrigerant in the refrigerating unit (lbs [kg])
≤ Maximum concentration (lbs/ft [kg/m ])*
3 3
The smallest room in which an indoor
*Maximum concentration of R410A: 0.027lbs/ft [0.44kg/m ]
unit has been installed (ft [m ]) 3 3
3 3
3-1. If the calculation results do not exceed the maximum concentration, perform the same calculation for larger rooms
until it has been determined that nowhere exceeds the maximum concentration.
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