Daikin D-BACS, Design Manual

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1.4 <DTA109A51> DIII-NET Expander Adaptor 295
Adaptor
1.4 <DTA109A51> DIII-NET Expander Adaptor
1.4.1 Function
1P013360
The adaptor allows easy system expansion as long as restrictions are observed.
(1) Up to 1024 units can be centrally controlled
in 64 different groups.
Misswiring such as applying 220-240V to circuits of DIII-NET should possibly shut down the
entire system.
(3) Setups risky for centralized control systems are possible.
1. The below systems can be controlled on the Super Wiring System when using the adaptor.
Restrictions on the number of units that can be connected
to the Super Wiring System apply to each adaptor.
Without the adaptor
With 2 central remote controllers, up to 1024 units
can be controlled in 128 groups.
The adaptor The adaptor
Each group A, B and C can have a maximum
wiring length of 1000m, total wiring length of 2000m
and a maximum 16 branches. A maximum of 128 indoor units and 10 outdoor units can be
connected in each group B and C.
C
A
B A
B
C
Max
Indoor unit
128 units
Outdoor unit
10 units
Max
Indoor unit
128 units
Outdoor unit
10 units
(2) Wiring restrictions (max.length : 1000m,
total wiring length : 2000m, max.number of
branches : 16) apply to each adaptor.
With the adaptor
Should trouble occur, only units below the adaptor are shut down.
Thus, it is possible to avoid a total system shutdown.
AC220-240V AC220-240V
AC220-240V AC220-240V