DC Inverter Cassette Type Unit
8
Table 6
Model
Power
Supply
Capability of Air
Switch(A)
Minimum Sectional Area of
Power Cable and Earth line
(mm
2
)
220-240V~ 50Hz
GU-X18SCR
16
1.5
GU-X24SCR
20
2.5
GU-X30SCR
2
0
2.5
① .
The fuse is located on the main board.
② .
Install the disconnect device with a contact gap of at least 3mm in all poles nearby the units
(Both indoor unit and outdoor unit).The appliance must be positioned so that the plug is
accessible.
③ .
The specifications of the breaker and power cable listed in the table above are determined
based on the maximum power (maximum amps) of the unit.
④ .
The specifications of the power cable listed in the table above are applied to the conduit-
guarded multi-wire copper cable (like, YJV copper cable, consisting of PE insulated wires and
a PVC cable jacket) used at 40°С and resistible to 90°С(see IEC 60364-5-52). If the working
condition changes, they should be modified according to the related national standard.
⑤ .
The specifications of the breaker listed in the table above are applied to the breaker with
the working temperature at 40°С. If the working condition changes, they should be modified
according to the related national standard.
⑥ .
Take 2 pieces of power cord of 0.75mm
2
as the communication lines between indoor and
outdoor unit, with their longest lengths of 50m. Please select the appropriate line length as
per the actual installation conditions. The communication lines can not be twisted together.
For the unit (≤30K), it’s recommended to use 8m long communication line.
⑦ .
Take 2 pieces of power cord of 0.75mm
2
as the communication lines between the wired
controller and the indoor unit, with their longest lengths of 30m. Please select the appropriate
line length as per the actual installation conditions. The communication lines can not be
twisted together. It’s recommended to use 8m long communication line.
⑧ .
The wire size of the communication line should be no less than 0.75mm
2
. It’s recommended
to take 0.75mm
2
power cords as the communication line.
GU-X42SCR
25
2
.
5
