Daikin VRV II Series Design, Installation & Testing Instructions page 191

Si39-303
Caution <Precautions when laying power wiring>
Use round pressure terminals for connections to the power terminal block.
When none are available, follow the instructions below.
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<Precautions when connecting the ground>
When pulling the ground wire out, wire it so that it comes through the cut out section of the cup
washer. (An improper ground connection may prevent a good ground from being achieved.)
Installation Manual
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.
Round pressure terminal
Connect same-
thickness wiring
to both sides.
For wiring, use the designated power wire and connect firmly, then secure to prevent outside
pressure being exerted on the terminal board.
Use an appropriate screwdriver for tightening the terminal screws. A screwdriver with a small
head will strip the head and make proper tightening impossible.
Over-tightening the terminal screws may break them.
See the table below for tightening torque for the terminal screws.
Tightening torque (N · m)
M8 (Power terminal block)
M8 (Ground)
M3 (Inter-unit wiring terminal block)
Round pressure terminal
Power wire
It is forbidden to It is forbidden to
connect two to connect wiring of
one side. different thicknesses.
5.5-7.3
0.8-0.97
Cup washer
Cut out section
Field Wiring
185