17 Commissioning
Installation and operation manual
38
BS4~12A14AJV1B
VRV 5 branch selector unit
4P670163-1 – 2022.02
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 error handling 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
1
A2P
A3P
BS8A
A1P
2
A2P
BS4A
A1P
3
[2-10]
Setting to enable or disable the external alarm output during the BS
unit test run.
This setting is only to be used during the test run of the BS unit when
a ventilated enclosure is used as a safety measure of the BS unit
and an external alarm is added as an additional measure. During the
BS unit test run, which is started by setting [2-3] to "1", the external
fan and external alarm are both active. To disable the external alarm
during the airflow rate measurements, change setting [2-10] to "1".
Once the BS unit test run is finished (setting [2-3] changed to "0"),
setting [2-10] automatically returns to its default value "0".
This setting must only be made on the leftmost main PCB (A1P) of
the BS unit.
[2-10]
External alarm output forced OFF
0 (default)
Disable
1
Enable
17
Commissioning
CAUTION
See
"2 Specific installer safety instructions"
6] to make
sure commissioning complies with all safety regulations.
NOTICE
General
commissioning
checklist.
Next
to
the
commissioning instructions in this chapter, a general
commissioning checklist is also available on the Daikin
Business Portal (authentication required).
The general commissioning checklist is complementary to
the instructions in this chapter and can be used as a
guideline and reporting template during the commissioning
and hand-over to the user.
17.1
BS unit test run
17.1.1
About the BS unit test run
The BS unit test run has to be performed on all BS units in the
system, before the test run of the outdoor unit. The BS unit test run
has to confirm that the required safety measures are properly
installed. Even when no safety measures are required, it is
necessary to perform this BS unit test run and confirm the result,
because the test run of the outdoor unit checks this confirmation for
all BS units in the system.
Depending on the safety measure and the configuration of the BS
unit, it is required to perform the BS unit test run on a specific BS
unit of the system. Respect the sequence indicated below.
Note:
Do not perform a BS unit test run on more than one BS unit at
a time.
▪
No safety measure:
all BS units with no safety measures.
▪
External alarm:
all BS units with an external alarm.
▪
Ventilated enclosure
–
one BS
unit to one extraction fan
configuration:
all BS units with a ventilated enclosure – one-to-
one configuration.
▪
Ventilated enclosure
–
multiple BS
units to one extraction
fan, parallel configuration:
all BS units with a ventilated
enclosure – parallel configuration.
▪
Ventilated enclosure
–
multiple BS
units to one extraction
fan, series configuration:
only one BS unit with a ventilated
enclosure – series configuration. Tip: choose the BS unit which is
most upstream, where the air inlet (damper) is free and you can
measure the airflow rate
Example
In the example below: change the setting [2-3] to start the test run
for the following BS units: a, b, d, e, f and g.
j
i
i
a
b
c
d
e
g
f
h
i
a
BS unit in one-to-one configuration
b
BS unit in series configuration
c
BS unit in series configuration
d
BS unit in parallel configuration
e
BS unit in parallel configuration
f
BS unit without safety measures
g
BS unit with external alarm
h
External alarm
i
Extraction fan
j
Outdoor unit
Transmission wiring
In case the safety measures demand a ventilated enclosure, the BS
unit test run has to include a measurement of the actual extraction
airflow rate to confirm that it meets the legal requirements.
