Gree CM100N1480, Service Manual

Page: 99 / 266

GREE Multi Variable Air Conditioners Indoor Unit
93
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 L (m) of
Communication Cable
between Indoor Unit and
Indoor (Outdoor) Unit
Wire size
(mm 2 /AWG)
Material
Standard
Remarks
Light/Ordinary
polyvinyl chloride
sheathed cord.
(60227 IEC 52
/60227 IEC 53)
L≤1000m(3280-5/6ft)
≥2×0.75
(2×AWG 18)
IEC
60227-5
(1) If the wire diameter is enlarged to 2×1
mm 2 (2×AWG16), the total
communication line length can reach
1500 m (4921-1/4ft.).
(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.
Communication cable selection for IDU and wired controller
Material type
Total length of
communication line
between indoor unit and
wired controller
Wire
size(mm
2
/A
WG)
Material
Standard
Remarks
Light/Ordinary
polyvinyl chloride
sheathed cord.
(60227 IEC 52
/60227 IEC 53)
L≤250m(820-1/5ft)
2×0.75
~2×1.25
(2×AWG18
~2×AWG16)
IEC
60227-5
(1) Total length of communication line can't
exceed 250m(820-1/5ft.).
(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 (1-1/6inch)×30mm (1-1/6inch)×3mm (1/8inch) or above.
(4) Round steel: Φ10mm (4/10inch) or above.