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Mitsubishi Electric PURY-RP200 Service Handbook page 29

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[ II Restrictions ]
Reusability of Transmission line
Is the shielded wiring used?
YES
Is the current in
normal state without
ground fault?
YES
Is the farthest
transmission line between OU and
IU less than 200m?
YES
Does the diameter of the
transmission line match the
figures in Table A?
YES
Is the 2-core cable used?
YES
Is the system stand-alone?
YES
Is the diameter of
the current wiring thicker
than the diameter read
from chart A?
YES
Shielded wiring should be connected
to the terminal at the power supply
unit side (outdoor unit).
Existing transmission line can
be reused.
HWE10020
NO
Please contact MITSUBISHI
ELECTRIC.
NO
Fix the ground fault current.
NO
Farthest transmission line of
centralized controller must be less
than 200m.
NO
To find out the reusability, check the number
of indoor units, farthest length of
transmission line, and read the applicable
diameter from diagram B.
NO
Refer to Table A.
Handle the wiring that are not used
as shown in figure A.
NO
Is the farthest
transmission line of centralized
control system less
than 500m?
YES
NO
Change the centralized
transmission line
diameter to more than
2
1.25mm
.
- 20 -
NO
Farthest transmission line for
centralized control system must be
less than 500m.
Chart A. Centralized transmission line applicable diameter
Length between power
supply unit to outdoor unit
and system controller
Less than 200m
Less than 130m
Wiring diameter
More than 0.5mm
2
2
More than 0.3mm
GB
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