3 Electrical and control settings
Unit electrical wiring and connection
SMGB0137 rev.0 - 05/2021
39
3
Followthestepsbelowtoconnecttheremotecontrolcableortheoptionalextensionwire:
1 Passthecablethroughtheknock-outholeinthe
cabinet.
2 Connect the cable to terminals A and B of the terminal
strip (TB1).
3 Tighten the screw on terminals A and B.
4 Checkthatthecablesarecorrectlysecured.
Power source wiring.
Operating wiring.
Remote control
switch wiring.
Hole for wiring connection
Ø32.5(knockouthole)
Hole for wiring
connection30x39
Followthestepsbelowtoconnectthepowercablestotheterminalstrip(TB1):
? NOTE
• Toconnectapowersupplytoneutral,connectthecablestoterminalsL1andNontheterminalstrip(TB1).
• Toconnectapowersupplywithoutneutral:maketheconnectiontoterminalsL1andL2ontheterminalstrip(TB1).
1 Where necessary, loosen the screws on terminals L1 and N or L1 and L2, as applicable, on the terminal strip (TB1).
2 Connect the power cables to terminals L1 and N or L1 and L2, as applicable.
3 Tighten the screws on terminals L1 and N or L1 and L2, as applicable.
4 Checkthatthecablesarecorrectlysecured.
Follow the steps below to connect the communication cables between the outdoor and indoor unit to the terminal strip
(TB1):
1 Where necessary, loosen the screws on terminals 1 and 2 on the terminal strip (TB1).
2 Connect the communication cables to terminals 1 and 2.
3 Tighten the screw on terminals 1 and 2.
4 Checkthatthecablesarecorrectlysecured.
Followthestepsbelowtoconnecttheearthingcablestotheearthingconnectionintheelectricalbox:
1 Wherenecessary,loosenthescrewontheearthingconnectionintheelectricalbox.
2 Connect the shielded part of the power supply earth wire to the earth connection.
3 Connect the shielded part of the signal earth wire to the earth connection.
4 Tightenthescrewontheearthingconnectionintheelectricalbox.
5 Checkthatthecablesarecorrectlysecured.
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