Gree NCHS1D Owner's Manual page 12

Communication Wire between Mode Exchange Box and indoor unit, outdoor unit:
Total length of communication
wire between Mode Exchange
Type of wire
indoor/outdoor unit L(m)
Light/Ordinary
polyvinyl chloride
sheathed cord
(60227 IEC
52/60227 IEC 53)
Box and another
L≤1000
Fig.3.3.1
Wire
Material
diameter
standard
(mm )
2
IEC
≥2×0.75
60227-5:2007
8
GMV6 HR Mode Exchange Box
Remarks
1. If the wire diameter is enlarged to
2×1mm , the total communication length
2
can reach 1500m.
2. The cord shall be circular cord (the
cores shall be twisted together).
Communication wire can be longer if
wire diameter is 2×1mm 2
length cannot exceed 1500m.
3. If unit is installed in places with
intense magnetic field or strong
interference, it's necessary to use
shielded wire.
. But the total