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12 Special requirements for R32 units
Installation and operation manual
16
BS4~12A14AJV1B9
VRV 5 branch selector unit
4P797565-1 – 2024.11
12.4 Safety measures
12.4.1 No safety measure
When the room area is sufficiently large, no safety measures are
required. This also includes a BS unit installed in the lowest
underground floor.
The duct connection must be replaced with the duct closing plate
accessory (see "13.5.2To install the duct closing plate"[427]).
Field settings
No safety measure
Code Description Value
[2-0]
(a)
Cluster indication 0 (default): disable
[2-4]
(b)
Safety measures 0: disable
(a)
Set on ALL main PCBs (A1P, A2P and A3P) of the BS unit.
(b)
Set ONLY on the LEFTMOST main PCB (A1P) of the BS unit.
Note: For more information, see "16.1Making field settings"[436].
BS unit test run
Before BS unit operation, it is required to perform a test run that
simulates a refrigerant leak. See "17.2 BS unit test run" [4 40] for
more details.
12.4.2 External alarm
WARNING
Do NOT use 'External alarm' as the ONLY safety measure
in case the indoor unit is installed in an occupied space
where people are restricted in their movement. Combine or
use another safety measure.
For the external alarm safety measure, the duct connection must be
replaced with the duct closing plate accessory (see "13.5.2To install
the duct closing plate"[427]).
An external alarm circuit (field supply) must be connected to the SVS
output of the BS unit, see "15.5 To connect the external
outputs"[435].
This alarm system must warn audibly AND visibly (e.g. a loud buzzer
AND a flashing light). The audible alarm must be 15dBA above the
background sound level at all times.
At least one alarm must be installed in the occupied space in which
the BS unit is installed.
For the occupancy listed below, the alarm system must additionally
warn at a supervised location with 24-hour monitoring:
▪ with sleeping facilities.
▪ where an uncontrolled number of people are present.
▪ accessible for persons not familiar with the necessary safety
precautions.
▪ where people are restricted in their movement
To warn at a supervised location, connect a supervisor remote
controller to the system. This supervisor remote controller can be
connected to any indoor unit of the system, and will warn at the
supervised location in case a refrigerant leak is detected in any BS
unit of the system. Note: An address number for the supervisor
remote controller must be assigned to the BS unit. See "16.1Making
field settings"[436].
When the R32 sensor in the BS unit detects a refrigerant leak, the
SVS output will close and activate the alarm. An error message will
display on the remote controllers of the connected indoor units. See
"20Troubleshooting"[443].
Field settings
External alarm
Code Description Value
[2-0]
(a)
Cluster indication 0 (default): disable
[2-4]
(b)
Safety measures 1 (default): enable
[2-7]
(b)
Ventilated enclosure 0: disable
(a)
Set on ALL main PCBs (A1P, A2P and A3P) of the BS unit.
(b)
Set ONLY on the LEFTMOST main PCB (A1P) of the BS unit.
Note: For more information, see "16.1Making field settings"[436].
BS unit test run
Before BS unit operation, it is required to perform a test run that
simulates a refrigerant leak. See "17.2 BS unit test run" [4 40] for
more details.
12.4.3 Natural ventilation
Natural ventilation is a safety measure where ventilation is made to a
place where sufficient air is available to dilute the leaked refrigerant
such as a large space.
The duct connection must be replaced with the duct closing plate
accessory (see "13.5.2To install the duct closing plate"[427]).
The natural ventilation safety measure can be applied by following
the steps below:
Step 1 – Determine total room area, which is the total area of the
space that has natural ventilation and the space in which the BS unit
is installed:
The respective room area can be determined by projecting the walls,
doors and partitions to the floor and calculating the enclosed area.
Spaces connected only through false ceilings, ductwork, or similar
connections are not considered a single space.
Step 2 – Use the graph or table below to determine the total
refrigerant charge limit in the system:
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
50 25 30 35 40 45 50 55 60 65201510 70 75 80
m
[kg]
A
1
+ A
min
[m
2
]
A
1
+
A
min
[m²]
m
[kg]
20 6.7
30 10.1
40
10 3.3
13.5
50 16.8
60 20.2
70 23.6
80 27.0
90 30.3
100 33.7
110 37.1
120 40.5
130 43.9
140 47.2
150 50.6
160 54.0
170 57.4
180 60.7
190 64.1
200 67.5
210 70.9
220 74.2
230 77.6
236 79.6
237 79.8
240 79.8
250 79.8
m Total refrigerant charge in the system [kg]
A
1
Area of the room with natural ventilation [m²]
A
min
Minimum room area of the space in which the BS unit is
installed [m²]
Note: Round down the derived values.
The graphs and table are based on an installation height of the BS
unit between 1.8m and 2.2m. The installation height is the height of
the bottom of the BS unit to the floor. See also "13.1.1 Installation
site requirements of the unit"[423].
If the installation height is more than 2.2 m, higher total refrigerant
charge limit of the system can apply. To know the total refrigerant
charge limit of the system in case the installation height is more than
2.2m, refer to the online tool (VRV Xpress).
Step3 – The total amount of refrigerant in the system MUST be less
than the refrigerant charge limit derived from the graph above. If
NOT, natural ventilation safety measure is not allowed.
Bekijk gratis de handleiding van Daikin BS8A14AJV1B9, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Daikin |
| Model | BS8A14AJV1B9 |
| Categorie | Airco |
| Taal | Nederlands |
| Grootte | 8827 MB |
