Hitachi FSG Series, Technical Catalogue

Page: 333 / 424

ELECTRICAL WIRING
15
/3
15.2.2 SETTING OF DIP SWITCHES FOR
OUTDOOR UNIT
§
Quantity and Position of Dip Switches
The PCB in the outdoor unit is operated with 10 types of dip
switches and 3 types of push switch.
Position of DIP switches for 5~20 HP:
Position of DIP switches for
24 & 30FSG1 and 20 & 30FXG1:
?
NOTE:
The mark “
n
“ indicates position of dips switches.
Figures show setting before shipment or after
selection.
By using DSW4, 7 or 8 the unit is started or stopped
after 10 to 20 seconds after the switch is operated.
&
CAUTION:
Before setting dips switches, firstly turn off power
source and set the position of the dips switches. If the
switches are set without turning off the power source,
the contents of the setting are invalid.
DSW1: Refrigerant cycle no. setting
Setting is required if H-Link is used. Setting position before
shipment are all OFF (Refrigerant cycle No. 0). In the same
Refrigerant Cycle set the same refrigerant cycle no. for the
outdoor unit and for the indoor units as shown in chapter 9.
Cycle No.
0
Setting Before shipment
ON
1 2 3 4
DSW2: Capacity settings
Not setting is required. Each outdoor unit is set before
shipment as shown in chapter 9 .
DSW3: High difference
Setting is required as indicated in chapter 9
Setting before shipment
ON
1 2
DSW4: Test Operation & Service Settings
Setting is required. This dip switch is utilized for servicing as
indicated in chapter 9.
Setting before shipment
ON
1 2 3 4 5 6
DSW5: Optional Function Setting
Setting is required. Set the dip switch according to your
requirements, as indicated in chapter 9.
Before shipment
Power Supply 380/50-60 Hz
ON
1 2 3 4 5 6 7 8
DSW6: Piping Length
Setting is required. Set the dip switch according to your
requirements, as indicated in chapter 9.
Before shipment and length < 25 m
ON
1 2
DSW7: Compressor Emergency Operation
Setting is not required. All compressor are running except
compressor selected as indicated in chapter 9.
Before shipment
ON
1 2 3 4
DSW8: Test Operation & Service Setting II
No setting is required, as indicated in chapter 9.
Before shipment
ON
1 2
DSW9: Optional Functions Setting II
Set the dip switch according to your requirements as
indicated in chapter 9.
Before shipment
ON
1 2 3 4
Push switch
Manual defrosting PSW1
for Check
PSW2
PSW3
DSW10: Transmitting Setting
Setting is required for cancellation of end resistance and
fuse protection as indicated in chapter 9
Before shipment, No. 1 pin of DSW10 is set
at ON side
ON
1 2