Hitachi RPIZ-0.8HNDTSQ Operation Installation Maintenance Manual page 13

Inverter-driven multi-split air-conditioner heat pump
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Note: When in immediate contact with refrigerant, please use the installation tools and instruments
dedicated to the new refrigerant.
DANGER
Since the pressure of new refrigerant R410A is 1.4 times that of traditional refrigerant, its
performance is susceptible to impurities like moisture, scale and grease, etc. It's essential to remove
the moisture, dust, other refrigerants or refrigerant oils from the refrigeration system. Hence, the
failure to use specified materials and tools may result in explosion, personal injury, refrigerant
leakage, electrical failure or fire.
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