13
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Special requirements for R32 units
Installer and user reference guide
53
BS4~12A14AJV1B
VRV 5 branch selector unit
4P695527-1 – 2022.02
Example
a
d
b
b
b
d
d
e
e
c
c
c
e
a
Outdoor unit
b
BS unit belonging to cluster 1
c
BS unit belonging to cluster 2
d
BS unit belonging to cluster 3
e
Extraction fan
Transmission wiring
Field settings
Code
Description
Value
Cluster
1
2
3
[2-0]
Cluster indication
1: enable
[2-1]
Cluster number
1
2
3
[2-2]
Cluster configuration
0 (default): parallel
1: series
[2-4]
Safety measures
1 (default): enable
[2-7]
Ventilated enclosure
1 (default): enable
Note:
Some field settings need to be made on all main PCBs (A1P, A2P and A3P) of
the same BS unit. For more information, see
91].
Example
It is not allowed to combine parallel and series configurations within the same
cluster.
a
B
A
a
a
b
a
BS unit
b
Extraction fan
A
Parallel configuration
B
Series configuration
NOT allowed
13.6 Combinations of safety measures
It is possible to combine BS units with different safety measures (no safety
measures, external alarm and ventilated enclosure) in the same system.
