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SPLIT
TYPE
18.2 Electric Wiring
18.2.1 Wiring principle
General principles
(1) 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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(3) Before connection work is started, the power supply must be shut off.
(4) Installer shall be responsible for any damage due to incorrect connection of the external circuit.
(5) Only copper wires are allowed to be used.
(6) Connection of power cable to the electric cabinet of the unit
(7) Power cables should be laid out through cabling trough, conduit tube or cable channel.
(8) 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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the cabinet free from an external force.
(10) Power cable must be grounded reliably.
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Model
GRS-CQ4.0Pd/NhH-E(O)
GRS-CQ6.0Pd/NhH-E(O)
GRS-CQ4.0PdG/NhH-E(I)
GRS-CQ6.0PdG/NhH-E(I)
GRS-CQ8.0Pd/NhH-E(O)
GRS-CQ10Pd/NhH-E(O)
GRS-CQ8.0PdG/NhH-E(I)
GRS-CQ10PdG/NhH-E(I)
Power lines are fixed
at these two points.
Function and communication
lines are fixed at these two points.
Notes
(a) Leakage Switch is necessary for additional installation. If circuit breakers with leakage protection are in use,
action response time must be less than 0.1 second, leakage circuit must be 30mA.
(b) The above selected power cable diameters are determined based on assumption of distance from the
Leakage
Power Supply
Switch
V,Ph,Hz
230VAC,1Ph,50Hz
230VAC,1Ph,50Hz
Note: power lines, function lines and communication lines
are arranged as shown in the figure above and should be
tightly fixed with the electric cabinet door opened 90 degrees.
35
Air-to-water Heat Pump All in One Versati
Minimum Sectional
Area of Earth Wire
2
(A)
(mm
)
16
1.5
16
1.5
20
6.0
20
6.0
25
4.0
25
4.0
40
6.0
40
6.0
Inlet for power lines
Inlet for function lines
Inlet for communication lines
between indoor and outdoor units
Minimum
Sectional
Area of Power
Supply Wire
2
(mm
)
1.5
1.5
6.0
6.0
4.0
4.0
6.0
6.0
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