Multi Variable Air Conditioners Cassette Type Indoor Unit
15
5 Wiring Work
WARNING
Before obtaining access to terminals, all supply circuits must be disconnected.
NOTICE
(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
and outdoor unit.
(8)
Adjust the static pressure via wired controller according to site circumstance.
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.
single branch wire
insulation layer
insulation laye
multiple twisted wire
wiring terminal
25mm(1inch)
10mm(3/8inch)
Fig 5.1.1
Fig 5.1.2
5.2 Power Cord Connection
NOTICE!
All indoor units must be unified of power supply so that they can be powered ON/
OFF at the same time.
