Requirements That Must Be Met; Precautions For Using Multiple Centralized Controllers - Daikin DCM601A72 Installation Manual

NOTE
• What's a remote controller group?
A single remote controller can simultaneously control a maximum of 16 indoor units.
This capability is referred to as group control. A remote controller group is a group of
indoor units controlled under the same remote controller.
[Conceptual drawing of a remote controller group]
F1, F2 P1, P2
A
2.2.2

Requirements that must be met

Cable specifica- • Cable type: 2-core vinyl-insulated vinyl-sheathed cable/vinyl cabtyre cable or 2-core
tions shielded cable
• Core thickness: AWG18-16
• Terminal treatment: Use a round crimp-type terminal (M3) with insulating sleeve.
Precautions • Do not use multicore cables with three or more cores.
• When using a shielded cable, connect only one end of each steel wire to the ground.
• Keep the DIII-NET communication wiring at least 1-31/32 in. away from power supply
wiring.
• The maximum wire distance must be kept to 3280 ft. or less. The total wire length must
be limited to 6561 ft., except when using a shielded cable whose total wire length must
be kept to 4921 ft. or less.
2.2.3

Precautions for using multiple centralized controllers

Equipment that controls multiple air conditioners is referred to as "centralized controller".
DAIKIN's product portfolio includes a wide range of centralized controllers suited to differ-
ent applications or target sizes, which can be used in combination to construct an optimal
air conditioning system.
If two or more centralized controllers are used in combination in DIII-NET, you must estab-
lish a MASTER to SLAVE relationship among those controllers to prevent confusion. The
MASTER authority may be assigned to one controller only. The remaining controllers must
be set to SLAVE.
The iTM plus adaptor is set to MASTER by default. Change the setting to SLAVE in any of
the following cases:
• Where Interface for use in BACnet is installed in parallel.
• Where Interface for use in LONWORKS is installed in parallel.
• Where there is another MASTER intelligent Touch Manager, or it is connected in rela-
tions of main/sub.
• Where there is another MASTER iTM plus adaptor, and it is connected in relations of
main/sub.
English
A
F1, F2 P1, P2 F1, F2 P1, P2
Max. 16 units
Installation Manual 3P291714-4
DCM601A72 iTM plus adaptor
F1, F2 P1, P2
17