DC Inverter U-match Series 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
)
GUHD12NK3FO
220-240V~ 50Hz
13 1.5
GUHD18NK3FO 16 1.5
GUHD24NK3FO 20 2.5
GUHD30NK3FO 20 2.5
GUHD36NK3FO 25 2.5
GUHD42NK3FO 25 2.5
GUHD48NK3FO 40 6.0
GUHD36NM3FO
380-415V 3N~ 50Hz
10 1.5
GUHD42NM3FO 10 1.5
GUHD48NM3FO 16 1.5
GUHD60NM3FO 16 1.5
Notes:
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 specications 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 specications 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 modied 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 modied
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.
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