Mitsubishi CITY MULTI PURY-EM-YNW-A1(-BS) Series Installation Manual page 11

If a large electric current flows due to a malfunction or faulty wiring, earth-leakage breakers
on the unit side and on the upstream side of the power supply system could both operate.
Depending on the importance of the system, separate the power supply system or take
protective coordination of breakers.
This appliance is intended to be used by expert or trained users in shops, in light industry
and on farms, or for commercial use by lay persons.
This appliance is not intended for use by persons (including children) with reduced
physical, sensory or mental capabilities, or lack of experience and knowledge, unless they
have been given supervision or instruction concerning use of the appliance by a person
responsible for their safety.
Store the unit in a room large enough to allow clearance in the event of refrigerant leakage.
Refrigerant R32 is flammable. Do not use a naked-flame type detector.
Carry a refrigerant leak detection sensor when installing or removing the unit.
Only qualified personnel may touch the USB port in the control box.
9
WT09050X01