6
3.3 Switching on central chiller unit and air handlers
After connecting the voltage supply, first all LEDs and all segments of the numeric
display flash for a few seconds, then "INIT" briefly appears on the control ele-
ment. The display “50H” or “60H” follows, depending on which power supply
the air-conditioning system is operated on, for example 230 V/50 Hz or
230 V/60Hz.
If the system was switched on before cutting off the voltage supply, the current
cabin temperature in the reference cabin will appear on the control element and
the system will start up automatically in the set operating mode. Otherwise the
control panel will go dark and the air-conditioning system will assume standby
mode.
•
Switch on the system by pressing the "On/Off"
button (6).
Depending on the requested operating mode, either the LED indicator for heating
mode (7) or the LED indicator for cooling mode (9) lights up to show the active
mode. The LED indicator for automatically switching between operating modes
(8) shows whether switchover takes place automatically. Automatic switch-over
is dependent on the set temperature and the cabin temperature measured by the
cabin temperature sensor.
After a further 10seconds the 4/2-way reversing valve (that allows the air-condi-
tioning system to operate as a chiller unit (cooling) or as a heat pump (heating))
opens to equalise pressure in the refrigerant circuit. After another 10seconds the
sea water pump starts up followed by the compressor. This is followed by normal
operation.
3.4 Switching off system
The system can be switched off by pressing the "On/Off" button
(6). The
condition for this is that the user is in the start menu with the display of the cabin
temperature. On the programming level (temperature, fan), the "On/Off"
but-
ton (6) is used to confirm the setting and not to switch off the system.
To Next Page
Loading...
Need help?
General
