4
Safety Considerations
Cautions!
z CAUTION FOR REFRIGERANT LEAKS
(Point to note connection with refrigerant leaks)
Introduction
The installer and system specialist shall safety against leakage according to local regulations or standards.
The following standards may be applicable if local regulations are not available. The GMV-Pdhm System
like other air conditioning system uses R410A as refrigerants.R410A itself is an entirely safe non-toxic,
non-combustible refrigerants. 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
with the local applicable regulations and standards.
Maximum concentration level
The maximum charge of refrigerants and the calculation of the maximum concentration of refrigerants is
directly related to the humanly occupied space in which it could leak.
The unit of measurement of the concentration is 1b/ft³(the weight in 1b of the refrigerant gas in 1 ft³
volume of the occupied space).
Compliance to the local applicable regulations and standards for the maximum allowable concentration
level is required.
1).Direction of the refrigerant flow
2).Room where refrigerants leak has occurred (outflow of the entire refrigerants from the system).
Pay a special attention to the place, such as a basement, etc. where refrigerant can stay, since refrigerant
is heavier than air.
Procedure for checking maximum concentration .Check the maximum concentration level in accordance
with steps 11 to 4 below and take whatever action is necessary to comply.
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