Multi Variable Air Conditioners Wall Mounted Type Indoor Unit
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(3) Connect the communication line to terminal D1 and D2 on the 4-digit wiring board of indoor
unit, as shown in Fig.5.3.1.
Fig 5.3.1
Fig 5.3.2
(4) Secure the communication line with the wire clamp on the electric box.
(5) In order to ensure the reliability of communication between IDU and ODU and the
communication among each IDU, add a matched resistance(supplied in a package before
ex-factory) on the wiring board of the last indoor unit in a series connection. The matched
resistance should be connected in parallel between terminal screw D1 and D2, as shown in
Fig.5.3.2.
5.4 Connection of Communication Line of Wired Controller
(1) Open the cover of electric box of indoor unit.
(2) Lead the communication line of wired controller across the rubber ring.
(3) Connect the communication wire to terminal H1 and H2 of indoor 4-bit wiring board.
(4) Fix the communication wire with wire clip on the electric box.
5.5 Illuminate for Connection of 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.
Notes:
① The type of indoor units must be the same if they are controlled by the same wired controller.
② When the indoor unit is controlled by two wired controllers, the addresses of the two wired
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