•
Power supply wiring and ground wires
Remove the control box cover and connect the power supply wiring to the
power terminal block (X1M).
Also connect the ground wire to the ground wire terminal.
Pass both the power supply wires and the ground wire together through the
wire through hole (left) into the control box and use the included clamps (1)
to securely hold the wires in place.
Be sure to wire the ground wire so that it comes out of the cut out slit in the
cup washer.
(Not doing so could cause insufficient ground wire contact, causing the wire
not to function as a ground.)
For more information about how much insulation to strip off power wiring,
refer to the following figure.
L1
L2
Power wiring (3-core)
5 in. (130 mm)
Cut out slit
Cup washer
Ring type crimp
style terminal
WARNING
Organize the wiring and securely reattach the control box cover.
Pinched wires or a loose control box cover could result in electric shock or fire.
CAUTION
•
When fastening the wire, use the included clamp (1) so as not to apply tensile force to the wire connec-
tion and then securely fasten the wire.
Also, after the wiring is completed, organize the wiring so that the control box cover does not pop up
and then properly replace the control box cover.
Make sure no wires are pinched when replacing the control box cover.
Always use the wire through hole to protect wires.
•
Do not pass the transmission wiring and power supply wiring
through the same locations, and outside of the unit keep them sep-
arated by at least 2 in. (50 mm).
Not doing so could cause the transmission wiring to pick up electric
noise (external noise) and result in a malfunction or breakdown.
•
After the wiring work is complete, use sealer (to be supplied in the
field) to seal closed the wire through hole.
(Entry by small animals, etc., could cause a malfunction.)
• As shown in the figure to the right, wrap the transmission wiring
between each Branch Selector unit and indoor unit with finishing
tape (to be supplied in the field).
Gas pipe
Transmission
wiring
Liquid
pipe
Finishing tape
Insulation material
16
3P405106-9 English
01_EN_3P405106-9.indb 16
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