13
5 Wiring Work
WARNING!
Before obtaining access to terminals, all supply circuits must be disconnected.
Note:
（
1
）
Units must be earthed securely, or it may cause electric shock.
（
2
）
Please carefully read the wiring diagram before carry out the wiring work, incorrect
wiring could cause malfunction or even damage the unit.
（
3
）
The unit should be powered by independent circuit and specific socket.
（
4
）
The wiring should be in accordance with related regulations in order to ensure the units
reliable running.
（
5
）
Install circuit breaker for branch circuit according to related regulations and electrical
standards.
（
6
）
Keep cable away from refrigerant pipings, compressor and fan motor.
（
7
）
The communication wires should be separated from power cord and connection wire
between indoor unit.
（
8
）
Adjust the static pressure via wired controller according to site circumstance.
（
9
）
If the supply cord is damaged, it must be replaced by manufacturer, its service agent or
similarly qualified persons in order to avoid a hazard.
5.1 Connection of Wire and Patch Board Terminal
（
1
）
The connection of wire (as shown in fig 5.1.1)
1
）
Strip about 25mm (1 inch) insulation of the wire end by stripping and cutting tool.
2
）
Remove the wiring screws on the terminal board.
3
）
Shape the tail of wire into ring by needle nose plier, and keep the gauge of ring in
accordance with screw.
4
）
Use the screwdriver for tightening the terminal.
（
2
）
The connection of stranded wire (as shown in fig 5.1.2)
1
）
Strip about 10mm (3/8 inch) insulation of the end of stranded wire by stripping and
cutting tool.
2
）
Loosen the wiring screws on terminal board.
3
）
Insert the wire into the ring tongue terminal and tighten by crimping tool.
4
）
Use the screwdriver for tightening the terminal.
Fig 5.1-1
Fig 5.1-2
Lennox VRF Air Handler Indoor Unit
