Hitachi FSG Series, Technical Catalogue

Page: 186 / 424

10
/10
AVAILABLE OPTIONAL FUNCTIONS
10.2.2. CANCELLATION OF COMMANDS FROM
RCS AFTER FORCED STOPPAGE (3).
This function provides a control to stop the system and lock
Remote Control Switch automatically from a remote place
by using level signal.
?
NOTE:
The previous indications and specifications on
required components shown in the above subchapter
are applied to this device too.
This option cannot be used with "Remote Control 1"
and "Remote Cooling/Heating Mode Change Over"
functions.
After switch off 1&2 of CN4, unit is maintained stopped
and remote control switch is available.
The basic wiring and the time chart are shown below.
Turn off the power source before cut the jumper JP2 of
Indoor Unit PCB
Time Chart:
?
NOTE:
Picking up signal within 10 seconds after power supply
is turned ON is not available due to initializing of
components.
10.2.3. REMOTE COOLING / HEATING MODE
CHANGE OVER (4)
The operation Mode of the unit can be changed from
Heating to Cooling and back by using a Remote Position.
The operation mode is followed by the field supplied switch
or the remote control switch, which is used last.
?
NOTE:
This option is only available for Heat Pump models
Previous indications and specifications on required
components showed in the above subchapter are
applied to this device too.
This function cannot be used together with “Remote
Control 2” and "Cancellation of commands from RCS
after forced Stoppage".
Wiring Diagram Example of Remote Control 3:
Time Chart:
?
NOTE:
Picking up signal within 10 seconds after power supply
is turned ON is not available due to initializing of
components.
JP1 JP2
Indoor Unit PCB
3P
Connector
Control Circuit
Power
Source
SS3: Forced Stoppage Sw.
ON
OFF
ON
OFF
Time
Signal to
2 & 3 of CN4
Control by R.C.S
Unit
Operation
Control Circuit
Power
Source
COOL
HEAT
3P Connector
Indoor Unit PCB
Time
Signal to 1 & 2
of CN4
Control by R.C.S (Cool)
Heat
Cool
Control by R.C.S (Heat)
Heat
Cool
Operation mode
of Unit