Haier 3U19FS2ERA Service Manual page 12

TYPE 2: For other indoor units.
Installation Manual For Wire Controller
There are three methods to connection wire controller and the indoor units:
A.One wired controller can control max. up to 16 sets of indoor units, and 3 pieces of polar wire must connect the wire
controller and the master unit (the indoor unit connected with wire controller directly), the others connect with the master
unit through 2 pieces of polar wire.
B. One wire controller controls one indoor unit, and the indoor unit connects with the wire controller through 3 pieces of
polar wire.
C. Two wired controllers control one indoor unit. The wire controller connected with indoor unit is called master one, the
other is called slave one. Master wire controller and indoor unit; master and slave wire controllers are all connected
through 3 pieces of polar wire.
6. Communication wiring:
The wire controller is equipped with special communication wiring in the accessories. 3-core terminal (1-white 2-yellow
3-red) is connected with the terminal A, B, C of wire controller respectively.
The communication wiring is 5 meter long; if the actual length is more than it, please distribute wiring according to below
table:
Communication wiring length(m)
100
100 and <200
200 and <300
300 and <400
400 and <600
*One side of the shielded sheet of communication wire must be earthed.
Dimensions of wiring
2
0.3mm x3-core shielded wire
2
0.5mm x3-core shielded wire
2
0.75mm x3-core shielded wire
2
1.25mm x3-core shielded wire
2
2mm x3-core shielded wire
145
Super Match