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regulation and this manual.
☆ It should be reliably earthed, and it should be connected to the special earth device, the
installation work should be operated by the professional.
☆ The creepage protecting switch and air switch must be installed.
☆ Air switch should have the thermal dropout and magnetic dropout function, in order to avoid
the short circuit and overload.
☆ The on spot connection should refer to the circuit diagram, which is stuck on the unit body.
Table 6 The model selection recommend table for air switch and power cable
Model
GUHD12NK3CO/GKH12K3CI
GUHD18NK3CO/GKH18K3CI
GUHD24NK3CO/GKH24K3CI
GUHD30NK3CO/GKH30K3CI
GUHD36NK3CO/GKH36K3CI
GUHD42NK3CO/GKH42K3CI
GUHD36NM3CO/GKH36K3CI
GUHD42NM3CO/GKH42K3CI
1. The power cable used in the unit is copper cable; the working temperature should not exceed the
specified value.
2. If the power cable is longer than 15 meters, please enlarge the cross section of power cable
adequately, in order to avoid the accident due to overload.
● Requirement for ground
☆ Air conditioner is the I class electric appliance, thus please do conduct reliable grounding
measure.
☆ The yellow-green two-color wiring of air conditioner is grounding wire and cannot be used for
other purposes. It cannot be cut off and be fixed by screw, otherwise it would cause electric
shock.
☆ The user must offer the reliable grounding terminal. Please don't connect the grounding wire to
the following places:
Water pipe
①
；
Gas pipe
②
；
③
Blowing pipe
Other places that prof
④
The power cable, communication wire connection between indoor and outdoor
The section area of cables selected by users must not be smaller than the specifications show
diagram. The signal wire between indoor and outdoor unit shall be installed in the shielded bushing。
Schematic Diagram of Unit Line Connection:
Power
Supply
(V, Ph,
Hz)
220-240,
~,50
380-415,
3N~,50
；
essional personnel consider them unreliable.
Capability
Minimum Sectional
of Air
Area of Earth Wire
Switch
(A)
(mm
16/6.0
2.5/1.0
20/6.0
4.0/1.0
20/10
4.0/1.5
32/10
6.0/1.5
32/10
6.0/1.5
32/10
6.0/1.5
25/10
6.0/1.5
25/10
6.0/1.5
61
Minimum
Sectional
Area of
Power
Supply
Wire
2
2
)
(mm
)
2.5/1.0
4.0/1.0
4.0/1.5
6.0/1.5
6.0/1.5
6.0/1.5
6.0/1.5
6.0/1.5
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