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Connecting power and communication cable
Specifications of the cable protection tube
Name
Material
Flexible PVC
conduit
Class 1 flexible
Galvanized steel sheet
conduit
Class 1 PVC coated
Galvanized steel sheet
flexible conduit
and Soft PVC compound
Power and communication wiring diagram
ELCB
or
ELCB +
ELB
Earth
The communication cable between indoor and outdoor units has no polarity.
Arrange the cables using a clamp attached on the left side of the terminal board.
When you connect the power cable, you must apply rated tightening torque to connect the screws for the terminal board
(L-N).
30
When the cable tube is installed indoor and not exposed to outside, because it is
PVC
embedded in concrete structure
When the cable tube is installed indoor but exposed to outside so there are risk
of damage to the cable tube
When the cable tube is installed outdoor and exposed to outside so there are risk
of damage to the cable tube and extra waterproof is needed
Communication cable
between indoor and
outdoor units
Applicable conditions
Indoor and outdoor unit
communication
R
S
T
N
DVM Hydro unit / Hydro unit HT
Earth
PBA
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