Daikin REYQ8PY1B Installation Manual page 23

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.
amount of refriger- additional charging
ant in a single unit amount (amount of
+
system (amount of refrigerant added
refrigerant with locally in accordance
which the system with the length or
is charged before diameter of the refrig-
leaving the factory) erant piping)
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
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.
total volume of refrigerant in the
refrigerant system
3
size (m ) of smallest room in which
there is an indoor unit installed
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.
17
total amount
of refriger-
=
ant (kg) in
the system
3
)
1
2
≤
maximum concen-
3
tration level (kg/m )
NOTES
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