Daikin VRV IV REYQ-TAYCA, Design Manual

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REYQ-TAYCA EDUS371706C-D
24. Caution for Refrigerant Leaks
24.1 Introduction
Points to note in connection with refrigerant leaks
The installer and system specialist shall secure safety against leakage according to local regulations or standards. The following
standards may be applicable if local regulations are not available.
The
VRV
System, like other air conditioning systems, uses R410A as refrigerant. R410A itself is an entirely safe non-toxic, non-combustible
refrigerant. Nevertheless care must be taken to ensure that air conditioning facilities are installed in a room which is sufficiently large. This assures
that the maximum concentration level of refrigerant gas is not exceeded, in the unlikely event of major leak in the system and this in accordance to
the local applicable regulations and standards.
Maximum concentration level
The maximum charge of refrigerant and the calculation of the maximum concentration of refrigerant is directly related to the humanly occupied
space in to which it could leak.
The unit of measurement of the concentration is lb./1000 ft.
3
(the weight in Ibs. of the refrigerant gas in 1 ft.
3
volume of the occupied space).
Compliance to the local applicable regulations and standards for the maximum allowable concentration level is required.
Direction of the
refrigerant flow
Room where refrigerant leak has occurred
(outflow of all the refrigerant from the system)
Pay special attention to places, such as basements, etc. where refrigerant can stay, since refrigerant is heavier than air.