Hitachi RAS-3HVRNM2, Инструкция по установке и обслуживанию, Страница: 45 / 58

TC-12001 2-117
OUTDOOR UNIT
P5414950-rev.1 41
O
The electrical wiring connection may differ
depending on the indoor unit type, so that
should be performed according to "Installation &
Maintenance Manual" of the indoor unit.
O
In the case of the combination of twin, triple or
quad, select “Case B” of the wiring method if the
total transition wiring length is more than 75m.
Regarding Australia, the wiring method shall be
performed “Case B” even if the total transition
wiring length is less than 75m.
< Setting of Multiple Indoor Units Simultaneous
Operation >
Before the outdoor unit is shipped, No. 1 pin
of DSW6 is set at “ON” side for the individual
operation. If the simultaneous operation is
required when installing the multiple indoor units,
No. 1 pin of DSW6 is set at “OFF” side.
O
Use 2 core twist pair cable (equivalent to
following cables: KPEV or KPEV-S) for the
remote control switch cable and the control cable
between indoor units. The total cable length
should be less than 500m. If the total length of
the cable is less than 30m, other cables can be
used (the cable size is 0.3mm
2
).
O
Earth securely one side of the shielded twist
pair cable when using it (equivalent to following
cables: MVVS, KPEV-S) for the control cable
between the outdoor unit and the indoor unit,
and for the control cable between indoor units.
(When installing the unit in Australia, earth the
both ends of shielded twist pair cable.)
O
Attention for Control Wiring Work between
Outdoor Unit and Indoor Unit
(for Case A and Case B)
Take the distance more than 5 to 6cm between
the control cable and power source cables.
Therefore, do not use the coaxial cable. In
addition, in the case that the other machinery
power source cables and the control cable are
installed in parallel, take the distance more than
1.5m between them.
If not separating the other machinery power
source cables and the control cable, separate
by running the power source cable through the
metal conduit (earth the one side).
O
Use 2 core cable (equivalent to following
cables: VCTF, VCT, CVV, MVVS, VVR or VVF,
size: 0.75mm
2
to 1.25mm
2
(manufactured by
HITACHI Cable Co. Ltd.)) or 2 core twist pair
cable (equivalent to following cables: KPEV or
KPEV-S (manufactured by HITACHI Cable Co.
Ltd.)) for the control cable between the outdoor
unit and the indoor unit.
The total cable length should be less than
1000m.
DSW6
Optional Function Setting
For Individual Operation
(Factory Setting Position)
1 2
ON
OFF
For Simultaneous Operation
1 2
ON
OFF
Set No.1 pin at "OFF" side for
the simultaneous operation.
Refrigerant
Piping for Gas Refrigerant
Piping for Liquid
Cable for
Control Line
Cable for
Power Source Line
between Outdoor Unit
and Indoor Unit
Thermal insulator for refrigerant piping
shall be using heat resistant type.