Air-to-water Heat Pump
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19.2 Electric wiring work
19.2.1 Wiring principle
(1) General principles
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Wires, equipment and connectors supplied for use on the site must be in compliance with
provisions of regulations and engineering requirements.
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Only electricians holding qualification are allowed to perform wire connection on the site.
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Before connection work is started, the power supply must be shut off.
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Installer shall be responsible for any damage due to incorrect connection of the external circuit
of the unit.
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Caution --- Must use copper wires.
(2) Connection of power cable to the electric cabinet of the unit
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Power cables should be laid out through cabling trough, conduit tube or cable channel.
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Power cables to be connected into the electric cabinet must be protected with rubber or plastic
to prevent scratch by edge of metal plate.
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Power cables close to the electric cabinet of the unit must be fixed reliably to make the power
terminal in the cabinet free from an external force.
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Power cable must be grounded reliably.
