GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL
32
Total Length L(m) of
Communication Cable
between IDU Unit and
IDU (ODU ) Unit m(feet)
Light/Ordinary
polyvinyl chloride
sheathed cord.
1. If the wire diameter is enlarged to 2 ×AWG16, the
total communication length can reach
1500m(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) Selection for the communication cable between the indoor unit and wired controller:
Total length of
communication line
between IDU unit and
wired controller L m(feet)
Light/Ordinary
polyvinyl chloride
sheathed cord.
1. Total length of communication line can't exceed
250m(820-1/5feet).
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.
NOTE:All of the selected communication wire must be consistent with local laws and regulations.
2.2.3 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.
2.2.4 Other requirements
Properties of the above-mentioned materials and the rest of materials that are used for the
construction and installation must comply with local rules and regulations.
Wall thickness of copper pipe shall be consistent with above requirements and the design
operating pressure shall not be lower than 3.8MPa (551psi). But if local authority has a higher
requirement, please design and construct according to local safety standards.
Materials of communication cable shall be consistent with above requirements. If there is conflict
between these requirements and local relevant standards, please contact the corresponding
distributor and confirm it with headquarter.
The parallel distance between communication cable and strong current line shall be above
200mm. Communication cord must not cross with the strong current line.