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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 1 to 4 below and take whatever action is necessary to
comply.
1.
Calculate the amount of refrigerant (lb.) charged to each
system separately.
amount of refriger-
additional charging
ant in the unit
amount (amount of
+
(amount of refriger-
refrigerant added
ant with which the
locally in accordance
system is charged
with the length or
before leaving the
diameter of the
factory)
refrigerant piping and
type of indoor unit)
NOTE
•
Where a single refrigerant facility is divided into 2 entirely
independent refrigerant systems then use the amount of
refrigerant with which each separate system is charged.
2.
Calculate a room volume (ft³)
3.
Calculate the refrigerant concentration by using the results
of the calculations in steps 1 and 2 above.
total amount of refrigerant in the
system
volume (ft³) of the room in which there
is an indoor unit installed
4.
Deal with the situations where the result exceeds the
maximum concentration level.
Where the installation of a facility results in a concentration
in excess of the maximum concentration level then it will be
necessary to revise the system.
Please consult your dealer.
English
total amount
of refrigerant
=
(lb.) in the
system
≤
maximum concentration
level (lb./ft³)
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