Gree Ultra Heat GMV Multi VRF Series - Page 37

Ultra Heat GMV Multi VRF_Heat Recovery Serial
32
Light/Ordinary
polyvinyl chloride
sheathed cord.
L≤250(820-1/5)
2×AWG18~
2×AWG16
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.
For example, two wired controllers control multiple IDUs and the graphic of connection between IDU
and wired controller is :
Fig.36
(2)Select communication wire between ODU and IDU
Material Type
Total Length L(m) of
Communication Cable
between IDU Unit and IDU
(ODU ) Unit 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 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.
Fig.37
NOTE：All of the selected communication wire must be consistent with local laws and regulations.
4.7.3.2 Connection mode of communication
(1) All communication wires of Ultra Heat GMV must be connected in series rather than in star.