Daikin VRV Plus Series General Information Manual page 168

Si33-003.book Page 164 Monday, June 25, 2001 9:06 AM
Caution for Refrigerant Leaks
9.1.3 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.
Step 1 Calculate the amount of refrigerant (kg) charged to each system separately.
amount of refrigerant in a single unit
system (amount of refrigerant with
which the system is charged before
leaving the factory)
Note:
Step 2 Calculate the smallest room volume (m³ )
Incase like the following, calculate the volume of (A), (B) as a single 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
(Where there is an opening without a door or where there are openings above and below the door which
are each equivalent in size to 0.15% or more of the floor area.)
Step 3 Calculating the refrigerant density using the results of the calculations in steps 1 and 2 above.
total volume of refrigerant in the refrigerant system
size (m³) of smallest room in which there is an indoor
unit installed
If the result of the above calculation exceeds the maximum concentration level then make similar
calculations for the second then third smallest room and so until the result falls short of the maximum
concentration.
Step 4
Dealing 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 Daikin supplier.
164
+
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.
free flow of air back and forth.
1
2
additional charging amount (amount
of refrigerant added locally in
accordance with the length or
diameter of the refrigerant piping)
Fig. 33
(V0886)
1. Opening between rooms
2. Partition
Fig. 34
(V0887)
≤
maximum concentration level (kg/m³)
: http://splitoff.ru/tehn-doc.html
SiE33-003
total amount of
= refrigerant (kg) in the
system
Installation Manual