16 Configuration
Installation and operation manual
37
BS4~12A14AJV1B
VRV 5 branch selector unit
4P670163-1 – 2022.02
[2-2]
Definition
0 (default)
Parallel cluster
1
Series cluster
[2-3]
Setting to simulate a refrigerant leak.
This setting has to be put on "1" during commissioning of the BS
unit, to activate the safety measures of the BS unit and confirm that
the safety measures are working as intended and are conform with
the applicable legislation. After confirmation, this setting has to be
put back to "0" and setting [2-6] has to be made to confirm the
completion of the commissioning check. See
This setting must only be made on the leftmost main PCB (A1P) of
the BS unit.
[2-3]
Simulate refrigerant leak
0 (default)
OFF
1
ON
[2-4]
Setting to enable or disable all BS unit safety measures.
This setting allows to enable or disable all BS unit safety measures.
It has to be put on "1" if safety measures are required (ventilated
enclosure or external alarm), and has to be put on "0" if no safety
measures are required. See
"12.3 To determine the required safety
In case of "0", the output of the R32 sensor in the BS unit will be
ignored, and there is no system response in case of a refrigerant
leak in the BS unit.
This setting must only be made on the leftmost main PCB (A1P) of
the BS unit.
[2-4]
Safety measures
0
Disable
1 (default)
Enable
2
Temporarily disable (24 hours or until power
reset)
[2-6]
Setting to confirm the completion of the commissioning check.
After confirmation that the safety measures of the BS unit are
working as intended, this setting must be put on "1".
The same setting is required for all BS units, even if no
countermeasures are installed. The test run of the outdoor unit will
perform a check if all BS units of the system have "1" as a value for
this setting. If not, an error will be shown on the 7-segment display of
the outdoor unit.
This setting must only be made on the leftmost main PCB (A1P) of
each BS unit.
[2-6]
Commissioning check
0 (default)
Incomplete
1
Completed
[2-7]
Setting to enable or disable the ventilated enclosure functions.
This setting allows to enable or disable the ventilated enclosure
safety measure of the BS unit. It is put on "1" if the ventilated
enclosure is a necessary safety measure, and has to be put on "0" if
only an external alarm is required. See
14].
This setting must only be made on the leftmost main PCB (A1P) of
the BS unit.
[2-7]
Ventilated enclosure
0
Disable
1 (default)
Enable
[2-8]
Setting to assign an address value to the BS unit for the supervisor
remote controller.
In case supervisor remote controllers are used in the system, it is
necessary to assign an address value to the BS unit.
▪ Assign a different address to different BS units.
▪ Use address values that are NOT used in the system elsewhere
(e.g. indoor units).
▪ Do not use address 00. The supervisor remote controller does not
display errors from BS units with address 00.
This setting must only be made on the leftmost main PCB (A1P) of
the BS unit.
[2-8]
Description
00~FF (address in
HEX format)
Address for supervisor remote controller
Example
d
a
A3P
A2P
A1P
e
e e
A2P
A1P
e
e
b
c
A1P
e
A1P
Main PCB 1
A2P
Main PCB 2
A3P
Main PCB 3
a
Outdoor unit
b
BS8A unit
c
BS4A unit
d
BS12A unit
e
Address value for supervisor remote controller assigned
to main PCB
Transmission wiring
The table below shows an example of address values assigned:
BS unit
Main PCB
Address value (e)
BS12A
A1P
01
A2P
0
A3P
0
BS8A
A1P
02
A2P
0
BS4A
A1P
03
[2-9]
Setting to assign an address value to the BS unit for error handling.
Assign the same address to the main PCB's (A1P, A2P and A3P) of
one BS unit, and a different address to different BS units.
NOTICE
Field setting [2-9] is mandatory for all BS units and has to
be made on all main PCB's (A1P, A2P and A3P) of the BS
unit.
[2-9]
Description
0 (default)~15
Address for error handling
