Multi Variable Air Conditioners Floor and Ceiling Type Indoor Unit
15
5 Wiring Work
Notes:
①
Units must be grounded securely, or it may cause electric shock.
②
Please carefully read the nameplate and the wiring diagram before carry out the wiring work,
incorrect wiring could cause malfunction or even damage the unit.
③
The capacity of power supply must be sufcient and the sectional area of wires in the room
should be above 2.5mm
2
.
④
The unit should be powered by independent circuit and specic socket.
⑤
The wiring should be in accordance with related regulations in order to ensure the units
operate reliably.
⑥
Install circuit breaker for branch circuit according to related regulations and electrical
standards.
⑦
All wiring must use pressure terminal or single wire. Multi-twisted wire that connects directly
to the wiring board may cause re hazard.
⑧
Keep cable away from refrigerant piping, compressor and fan motor.
⑨
Do not alter the inner wires of air conditioner. Manufacturer does not assume responsibility
for damage or abnormal operation due to this reason.
⑩
If the unit is installed in places with strong electromagnetic interference, it's recommended
to use twin-twisted shield wire. During wire connection, please pay attention that the metal shield
layer of the twin-twisted wire must be grounded(outer case) in order to prevent the unit from
electromagnetic interference.
11
The communication wires should be separated from power cord and connection wire between
indoor unit and outdoor unit.
12
If the project needs higher static pressure, you can set it through the wired controller.
13
The appliance must be fitted with means for disconnection from the supply mains having a
contact separation in all poles that provide full disconnection under overvoltage category III conditions,
and these means must be incorporated in the xed wiring in accordance with the wiring rules.
5.1 Connection of Wire and Patch Board Terminal
(1) Connection of single branch wire (as shown in Fig 5.1.1)
1) Use a stripper to strip away about 25mm of the insulation layer at the end of single branch line
so that the single-core wire can be exposed.
2) Remove the wiring screws on the patch board.
3) Shape the tail of wire into ring by needle nose plier, and keep the gauge of ring in accordance
with screw.
4) Lead the screw across the circle of the single branch line and x it on the wiring board.
single branch wire
insulation layer
insulation layer
multiple twisted wires
wiring terminal
Fig 5.1.1 Fig 5.1.2
(2) Connection of multi-twisted wire (as shown in Fig 5.1.2)
1) Use a wired stripper to strip away about 10mm of the insulation layer at the end of multi-
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