17
English
1.
direction of the refrigerant flow
2.
room where refrigerant leak has occurred (outflow of all
the refrigerant 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 1
to 4 below and take whatever action is necessary to comply.
1.
Calculate the amount of refrigerant (kg) charged to each system
separately.
Note
•
Where a single refrigerant facility is divided into 2 entirely inde-
pendent refrigerant systems then use the amount of refrigerant
with which each separate system is charged.
2.
Calculate the smallest room volume (m
3
)
Incase like the following, calculate the volume of (A), (B) as a sin-
gle room or as the smallest room.
A.
Where there are no smaller room divisions
B.
Where there is a room division but there is an opening
between the rooms sufficiently large to permit a free flow of
air back and forth.
1.
opening between rooms
2.
partition
(Where there is an opening without a door or where there are open-
ings above and below the door which are each equivalent in size to
0.15% or more of the floor area.)
3.
Calculating the refrigerant density using the results of the calcu-
lations in steps 1 and 2 above.
If the result of the above calculation exceeds the maximum con-
centration level then make similar calculations for the second then
third smallest room and so until the result falls short of the maxi-
mum concentration.
4.
Dealing with the situations where the result exceeds the maxi-
mum concentration level.
Where the installation of a facility results in a concentration in
excess of the maximum concentration level then it will be neces-
sary to revise the system. Please consult your Daikin supplier.
amount of refriger-
ant in a single unit
system (amount of
refrigerant with
which the system
is charged before
leaving the factory)
+
additional charging
amount (amount of
refrigerant added
locally in accordance
with the length or
diameter of the refrig-
erant piping)
=
total amount
of refriger-
ant (kg) in
the system
total volume of refrigerant in the
refrigerant system
≤
maximum concen-
tration level (kg/m
3
)
size (m
3
) of smallest room in which
there is an indoor unit installed
2
1
1
2
Summary of Contents for VRV III REYQ18PY1
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