Requirements For Communication Wire - Gree GMV-N140U/A-T Manuel D'installation Et D'utilisation

OPERATING INSTALLATION MANUAL FOR AHU-KIT UNIT
(7) Keep the air handling unit, power supply wiring and transmission wiring at least 1 m away
from televisions and radios. This is to prevent image interference and noise in those
electrical appliances. (Noise may be generated depending on the conditions under which
the electric wave is generated, even if 1 m is kept.)
(8) Make sure the electronic expansion valve is installed in an upright position.
Notes!
① Do not install or operate the unit in rooms mentioned below:
a). Where mineral oil, like cutting oil is present.
b). Where the air contains high levels of salt such as air near the ocean.
c). Where sulphurous gas is present such as that in areas of hot spring.
d). In vehicles or vessels.
e). Where voltage fluctuates a lot such as that in factories.
f). Where high concentration of vapor or spray are present.
g). Where machines generating electromagnetic waves are present.
h). Where acidic or alkaline vapor is present.
② Installing this unit must comply with the relevant local and national codes.
③ Connecting the power after all installation works are done.

3.6 Requirements for Communication Wire

Notes:
If the unit is installed in the place with strong electromagnetic interference,
must be applied on the communication wire between indoor unit (AHU-KIT) and wired
controller. Twisted pair wire with shielding function must be applied on the communication
wire between indoor unit and indoor unit (outdoor unit).
3.6.1 Selecting communication wire for AHU-KIT and wired controller
Wire Type
Light/Common PVC
Jacket Soft Wire
Light shield/Common
PVC Jacket Soft Wire
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Fig.3.6.1
Total Length of
Communication wire L(m)
L ≤ 250
L ≤ 250
2
Wire Gauge (mm )
The total length of
2×0.75 ～ 2×1.25 communication wire should
not exceed 250m.
The shield cable is required
when the unit is installed in
2×0.75 ～ 2×1.25
the environment of strong
magnetic or interference.
7
shielded wire
Remark