Preliminary Checks - Hitachi RAS-8FSXN1E Manuel D'utilisation

COMMISSIONING
?
N O T E
• The combination of outdoor units must be set.
• (*) For FSXN1E: Unit A - D. For FSXNHE: Unit A - C.
DSW7: supply voltage setting
Setting not required
DSW10: communication setting
Setting required.
•
A: setting before supply:
•
B: cancellation of final resistance.
(*) If the comunication circuit fuse has opened, the PCB1 board can only
be recovered by activating contact 2.
11 COMMISSIONING

11.1 PRELIMINARY CHECKS

The test run must be carried out according to the instructions given in chapter
!
D A N G E R
Do not use the system until all of the check points have been verified.
As with the test run for the indoor unit, check the Installation and
maintenance manual for the indoor unit and the CH unit.
Make sure the refrigerant pipes and communication cables
between the outdoor and indoor units are connected to the
same refrigeration cycle. Failure to do so could lead to abnormal
operations or a serious accident. Check that the setting of the
refrigerant cycle DSW switches (DSW1 and RSW1 on outdoor
units, DSW5 and RSW2 on indoor units) and of the unit number
of the indoor units is suitable for the system. Check whether
the DIP switch setting specified on the printed circuit of the
indoor and outdoor units is correct. Pay particular attention to
the outdoor unit nunber, the refrigerant cycle number and the
terminal resistance.
Make sure the electrical resistance is greater than 1 MΩ by
measuring the resistance between the ground and the terminal
of the electrical components. If not, do not use the system until
the electrical leak has been detected and repaired. Do not apply
voltage to the communication terminals.
Check that all cables, L1, L2, L3 and N (R, S and T) are
correctly connected to the power line. If they are not correctly
connected, the unit will not work and the remote control will
indicate alarm code "05". When this occurs, check and change
the power line phase according to the sheet attached to the rear
of the service cover.
33 PMML0392B rev.1 - 07/2016
DSW10: switch setting example
DSW10 DSW10
1 2 1 2
A
H-LINK
H-LINK II
H-LINK
H-LINK II
D D D D
E E E
A. Main unit.
B. Secondary unit.
C. Secondary unit.
(*)
?
N O T E
• Where two or more outdoor units are connected using the H-LINK or
H-LINKII, DSW10 contact 1 on the master or main unit must be set to
OFF from the second refrigerant group of outdoor units.
• If only one unit is installed, the setting is not necessary.
"11.2 Carry out the Test
!
C A U T I O N
Make sure the main power supply switch has been on for over 12 hours
to heat up the compressor oil using the heating elements.
The FSXN1E and FSXNHE series outdoor units do not work
for 4 hours after the power supply line has been connected
(stoppage code d1-22). Where the unit is to be started within 4
hours, release the protection control as follows:
1 Switch on the power supply to the outdoor unit.
2 Wait 30 seconds.
3 Press PSW5 on the outdoor unit PCB for more than 3
seconds to release code d1-22. Where a remote control is
used for releasing, press Air Flow and Auto Louver at the
same time for 3 seconds.
Where several base units are combined, stick the label on the
main unit in a visible place (outdoor unit 1) so that the outdoor
unit A can be easily identified. Do not stick the main label on the
secondary unit (outdoor units 2 and 3).
!
C A U T I O N
Where the total insulation resistance of the unit is below 1 MΩ, the
compressor insulation resistance may be low due to the refrigerant held
in the compressor. This may occur if the unit is not used for long periods.
1 Disconnect the compressor cables and measure the
insulation resistance of the compressor. If the resistance
value is greater than 1 MΩ, the insulation fault has occurred
in another electrical component.
DSW10 DSW10 DSW10 DSW10
1 2 1 2 1 2 1 2
B C A B
H-LINK H-LINK
H-LINK II H-LINK II
D D D D D
E E E E E E
D. Indoor units.
E. Remote control.
Run".
DSW10
1 2
D
E