Hitachi CENTRIFUGAL VRF Serie Bedienungsanleitung Seite 27

ELECTRICaL WIRING
10.3 SETTING AND FUNCTION OF DIP AND RSW SWITCHES FOR RASC UNITS
10.3.1 Location of DIP switches and RSW
switches
(PCB layout)
10.3.2 Functions of dip switches and rotary
switches
?
N O T E
• The mark "■" indicates the dip switches positions.
• No mark "■" indicates pin position is not affected.
• The figures show the settings before shipment or after selection.
!
C A U T I O N
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: Test run
Setting before
shipment
Test Run for
cooling
Test Run for
heating
Enforced
compressor OFF
?
N O T E
• This operation is reset once the compressor is in Thermo-ON mode.
• During the test run operation the units will operate continuously
during 2 hours without Thermo-OFF and the 3-minutes guard for
compressor protection will be effective.
• Test run will start within 20 seconds after setting DSW1 pin 1 to ON
position.
17 PMML0399B rev.1 - 07/2016
-
Continuous operation during 2
hours is performed without thermo
OFF.
The 3 minutes guard for
compressor protection is not
effective during the test run
operation.
Compressor operation is OFF
during the operation.
DSW2: Pipe length setting (Setting is required) /
Optional function setting
Setting before
shipment
(5-30m)
Piping length
(0~5 m)
Piping length
(More than 30 m)
Piping pressure
setting
Function selection
setting
External input/
output selection
DSW3: Capacity setting (No setting is required)
RASC-4HNPE
RASC-5HNPE
RASC-6HNPE
RASC-8HNPE
RASC-10HNPE
DSW4 and RSW1: Setting number of refrigerant
cycles (Setting is required)
Setting for the
tenth digit
Setting for the last
digit
-
Initial expansion valve opening
is changed according to the
piping.
Initial expansion valve opening
is changed according to the
piping.
Control to support existing
pipes or when using Ø19,05
gas pipe (soft-annealed).
Function selection is set by
PSW.
External input/output selection
is set by PSW.
Setting before shipment.
Setting before shipment.