Wiring Work; Connection Of Wire And Patch Board Terminal - Lennox VRF VEAH024N432P Installation & Operation Instructions

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
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Lennox VRF Air Handler Indoor Unit
Fig 5.1-2