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Commercial air-conditioning system using non-flammable refrigerant

  • Number 1Pay attention to exempt quantity for refrigerant containers during installation and maintenance
    Number 2Choose the right refrigerant when replacing the old air-conditioning and refrigeration equipment using R22 refrigerant
    Number 3Choose non-flammable refrigerants:
    • R134a
    • R410A
    • R407C
    • R1233zd
    • R513A
    Number 4Air-conditioning system and refrigeration equipment using flammable refrigerants is not suitable to install in Hong Kong environment.
    Number 5Do not adopt non-prescribed refrigerant in the existing equipment
    Number 6A joint departmental circular by the EMSD, FSD and LD
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