44 Outside Unit
Electrical Wiring
When none are available, follow the instructions below.
• Do not connect wiring of different thicknesses to the power terminal block. (Slack in the power wiring
may cause abnormal heat.)
• When connecting wiring which is the same thickness, do as shown in the figure below.
• For wiring, use the designated power wire and connect firmly, then secure to prevent outside pressure
being exerted on the terminal block.
• Use an appropriate screwdriver for tightening the terinal screws. A screwdriver with a small head will
strip the head and make proper tighterning impossible.
• Over-tightening the terminal screws may break them.
u Precautions when laying power and ground wiring
u How to connect wiring
1. Connect power supply wire to terminal block of control case
using clamps on the supporter and control case as shown figure
right.
2. Connect communication wire to main PCB terminal block using
clamps on the supporter and main PCB case as shown figure
right.
Round pressure terminal
Power wire(Ground wire)
Use round pressure terminals for connections to the power terminal block.
When laying ground wiring, you must use round pressure terminals.
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