Multi Variable Air Conditioners WALL Mounted Type Indoor Unit
9
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.
(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 controllers
should be different through address setting. Address 1 is for main controller; Address 2 is for slave
controller. Detailed setting please refer to the instruction manual of wired controller.
5.6 Installation of the indoor unit
(1)
When routing the piping and wiring from the left or right side of the
indoor unit, it is necessary to cut off the tailings of the pipe left on the holder of the
unit. (Shown in Fig.5.6)
Cut down tailings 1 when only the power cord is led.
Cut down tailings 1,2 (or 1,2,3) when the connection cord and wire are led.
The piping types
①
,
②
,
③
are recommended.
