Gree GMV MTAC VRF Series, Руководство по обслуживанию

Страница: 69 / 117

Gree GMV MTAC VRF for North America
65
2.4 Communication Cable and Control Cable
NOTICE!
For air conditioning units installed in places with strong electromagnetic interference,
shielded wire must be used as the communication cables of the IDU and wired controller, and
shielded twisted pairs must be used as the communication cables between IDUs and between the
IDU and ODU.
Communication cable selection for ODU and IDUs
Material Type
Total Length of
Communication Cable
between IDU Unit and IDU
(ODU ) Unit L(m/feet)
Wire size Remarks
Light/Ordinary polyvinyl
chloride sheathed cord.
L ≤ 1000(3280-5/6) ≥ 2×AWG18
(1) If the wire diameter is enlarged to
2×AWG16, the total communication
line length can reach 1500 m
(4921-1/4feet).
(2) The cord shall be Circular cord (the
cores shall be twisted together).
(3) If unit is installed in places with
intense magnetic field or strong
interference, it is necessary to use
shielded wire.
2.5 Power Cable
Only copper conductors can be used as power cables. The copper conductors must meet
relevant national standard and satisfy the carrying capacity of unit.
2.6 Hanger Rod and Support
(1) Hanger rod: M8 or M10.
(2) U-steel: 14# or above.
(3) Angle steel: 30mm×30mm×3mm(1-3/16inch×1-3/16inch×2/16inch) or above.
(4) Round steel:
Φ 10mm (3/8 inch) or above.
3 Installation of Outdoor Unit
3.1 Check before Installation
(1) Before installation, please check the power cord if it complies with the power supply
requirement on the nameplate. Make sure the power supply is safe.
(2) This air conditioner must be properly grounded through the receptacle to avoid electric
shock. The ground wire shouldn’t be connected with gas pipe, water pipe, lightning
arrester or telephone line.
(3) Maintain good air circulation to avoid lacking oxygen.
(4) Read this manual carefully before installation.
3.2 Selection of Installation Site
(1) Select a location which is strong enough to hold unit’s weight so that unit can stand still
and erect.
(2) Make sure the unit is not exposed to sun and rain. And the location can resist dust,