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Safety
Precautions
Page 6
WARNING for Using R32/R290 Refrigerant
When flammable refrigerant are employed, appliance shall be stored in a well-ventilated area
where the room size corresponds to the room area as specific for operation.
For R32
refrigerant
models:
Appliance shall be installed, operated and stored in a room with a floor area larger than
14 ft
.
Appliance shall not be installed in an unve
n
tilated space, if that space is smaller than
14 ft.
For
R290 refrigerant models, the minimum room size needed:
<=9000Btu/h units:
42 ft.
>9000Btu/h and <=12000Btu/h units:
55 ft.
>12000Btu/h and <=18000Btu/h units: 26m
>18000Btu/h and <=24000Btu/h units: 35m
Reusable mechanical connectors and flared joints are not allowed indoors.
(
EN
Standard Requirements).
Mechanical connectors used indoors shall have a rate of not more than 3g/year at 25%
of the maximum allowable pressure. When mechanical connectors are reused indoors,
sealing parts shall be renewed. When flared joints are reused indoors, the flare part
shall be re-fabricated. (
UL
Standard Requirements)
85 ft.
114 ft.