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5CSL0-06B Electrical work
2.5 Electrical work
2.5.1 Precautions
CAUTION
When knocking out knock holes
• To punch a knock hole, hit on it with a hammer.
• After knocking out the holes, we recommend you paint
the edges and areas around the edges using paint to
prevent rusting.
• When passing electrical wiring through the knock holes,
remove any burrs from the knock holes and wrap the
wiring with protective tape to prevent damage.
Use a conduit for the cable
• Outside the unit, make sure the thin signal cable (i.e. for the
remote control, between units, etc.) and the thick electric
wiring do not pass near each other and use of the shield signal
cable is recommended.
Otherwise, the outdoor unit may be affected by electrical
noise (external noise), and malfunction or fail.
• Secure the wiring with the accessory clamps so that it does
not touch the piping.
• Make sure the wiring and the electric parts box cover do not
stick up above the structure, and close the cover firmly.
CAUTION
Burr
If there are any possibilities that
small animals or insects enter the
system through the knock holes,
plug the holes with packing
materials (to be prepared onsite).
Do not operate the air conditioner until the refrigerant piping
work is completed.
(Operating the air conditioner before the refrigerant piping
work is completed may damage the compressor.)
• Install an earth leakage circuit breaker.
Since this is a inverter air conditioner. In order to prevent
malfunction of the earth leakage breaker itself, use a
breaker resistant to higher harmonics.
• After finishing the electric work, confirm that each electric
part and terminal inside the electric parts box is connected
securely.
NOTE
• Only professional electricians having sufficient knowledge
should perform the electrical wiring work.
Perform the electrical wiring work in accordance with the
electrical wiring diagram.
Make sure to set OFF the branch switch and over current
breaker before starting the work.
• Install an earth leakage breaker.
• Perform grounding to the indoor units and outdoor units.
• Do not connect the ground wire to gas pipes, sewage
pipes, lightning rods telephone ground wires.
• Gas pipes ···· Can explode or catch fire if gas leaks.
• Sewage pipes···· Provides no grounding effect if hard
plastic pipes are used.
• Telephone ground wires and lightening rods ···· dangerous
when struck by lightening due to abnormal rise in the
ele trical potential in the ground.
• Use only copper wires.
• Make sure to shut down the power before starting the electric
wiring work.
Do not set ON any switch until the work is completed.
• The outdoor unit has an inverter compresser which generates
noise and charges the outer casing with the leakag
current. The outdoor unit should be grounded so that the
effect of the generated noise on othe equipment can be
reduced, and that the outer casing can be discharged.
• Never install a phase advancing capacitor for power factor
improvement.
(Even if it is installed, the power factor is not improved. And
if it is installed, the outdoor unit is abnormally overheated.)
• Use specified electric wires in the wiring, and connect them
securely.
Fix them in such a way that external force is not applied at
the terminals
(transmission wiring in the local field and ground terminal).
• Never push excessive electric wires into the units.
• Protect electric wires with conduit tubes or other proper
tubes so that they will not be damaged by edges of knock
holes.
• Do not use multi conductor cable which have more than 5
wires in one core.
Guideline for each installation process 307