General Check - Hitachi SET FREE SIDE FLOW Serie Bedienungsanleitung

ELECTRICAL WIRING

10.1 GENERAL CHECK

1 Make sure that the field-supplied electrical components
(main power switches, circuit breakers, wires, conduit
connectors and wire terminals) have been properly selected
according to the electrical data indicated in the Technical
Catalog. Make sure that the components comply with
National Electrical Code (NEC).
Supply electrical power to each outdoor unit. An ELB and
-
knife switch should be used for each outdoor unit.
- Perform electrical wiring by connecting the outdoor unit
to the same outdoor unit group indoor unit. Use an ELB
and knife switch for each indoor units group.
2 Following the Council Directive 2004/108/EC(89/336/EEC),
relating to electromagnetic compatibility, next table indicates:
Maximum permissible system impedance Z
interface point of the user's supply, in accordance with
EN61000-3-11.
MODEL
RAS-8/10/12FSNM
3 Harmonics situation of each model regarding IEC 61000-3-2
and IEC 61000-3-12 is as follows:
10.2 ELECTRICAL WIRING CONNECTION FOR OUTDOOR UNIT
The electrical wiring connection for the outdoor unit is shown below.
1 Connect the power supply wires to L1, L2, L3, and N for the three phase power source on the terminal board and ground wires to
the terminals in the electrical control box.
2 Connect the wires between the outdoor and indoor units to terminals 1 and 2 on the terminal board.
3 Do not wire in front of the fixing screw of the service panel. If do, the screw can not be removed.
RAS-(8-12)FSNM
Keep a distance between each wiring
terminal and attach insulation tape or
sleeve as shown in the figure.
CORRECT INCORRECT
Insulation tape or sleeve
Do not use a solderless
terminal when a single
wire is used.
If used it causes
abnormal heating at the
Power supply
caulking portion of the
terminal.
If a single wire is used
connect the wire direct
Earth wire
as shown in the figure.
Control cable
17 PMML0390B REV.0 - 11/2015 - P5416649
at the
max
Zmax (Ω)
-
Wiring method with clamp
Rear cover
1
Insert the wires by into the cord
clamp and clamp them as
shown in the figure.
2 P
erform wiring so that
wires do not touch the
compressor, refrigerant
pipes or edge of the covers.
Earth
wire
disconnecting the wirings for replacing
!
cable
When using conduit, do NOT lead it
in the outdoor unit. If the
conduit wiring touches
Rubber bush
the compressor and
(Accessory)
refrigerant cycle in
the outdoor unit, it
may cause to
damage them.
MODELS SITUATION REGARDING
IEC 61000-3-2 AND IEC 61000-3-12
Ssc "xx"
Equipment complying with IEC 61000-3-2
(professional use)
Equipment complying with IEC 61000-3-12
"This equipment complies with IEC 61000-
3-12 provided that the short-circuit power
Ssc is greater than or equal to xx (see Ssc
column) at the interface point between
the user's supply and the public system.
It is the responsibility of the installer
or user of the equipment to ensure, by
consultation with the distribution network
operator if necessary, that the equipment
is connected only to a supply with a short-
circuit power Ssc greater than or equal to
xx (see Ssc column)"
Installation restrictions may be applied by
supply authorities in relation to harmonics
This(ese) unit(s) is(are) out of scope
of IEC 61000-3-12
4 Check to ensure that the power supply voltage is within
±10% of the rated voltage.
5 Check the capacity of the electrical wires. If the power
source capacity is too low, the system cannot be started due
to the voltage drop.
6 Check to ensure that the ground wire is connected.
Make a loop of the wires so that
parts is not required
C A U T I O N
Piping
Cover
Conduit
Power supply cable
MODELS
RAS-8FSNM
-
-
RAS-10FSNM
RAS-12FSNM
-
!
C A U T I O N
Fix the operation shielded wires between
the indoor and outdoor unit with a cord
band and ground shielded twist pair cable
as shown in the next figure
Shielded wire
Press the metal
band by pinchers,
Metal band
after inserting the
Transmission wire
shielded wire to
metal band.
Ssc
"xx"
(KVA)
-
-
-
-
-
Earth screw