Multi Variable Air Conditioners Cassette Type Indoor Unit
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5.4 Connection of Communication Wire for Wired Controller
(1) Detach the electric box lid.
(2) Let the communication wire pass through the wiring through-holes.
(3) Connect the communication wire to terminal H1 and H2 of indoor 4-bit wiring board.
(4) Fix the communication wire with clamp.
(5) Wiring instructions of signal receiver and wired controller.
1) Wired controller is shown as Fig.5.4.1, wireless controller is shown as Fig.5.4.2, signal
receiver is provided with panel as standard accessory.
Fig.5.4.1 Fig.5.4.2
2) Both IDU and wired controller are equipped with signal receiver, and available for wireless
control respectively.
Fig.5.4.3
5.5 Instructions on Connecting Wired Controller and Indoor Units Network
(1) Communication wire of indoor unit and outdoor unit (or indoor unit) is connected to D1, D2.
(2) Wired controller is connected to H1, H2.
(3) One indoor unit can connect two wired controllers that must be set as master one and slave one.
(4) One wired controller can control 16 indoor units in maximum at the same time (as shown in
Fig.5.5).
