40
00 4.8 5.5 5.6
5.2 5.3 5.4
6.1 6.2
6.5 6.6
00 24 7.4
00 24 7.5
INSTALLATION OPERATIONS AND MAINTENANCE MANUAL - VORT NRG MEGA-R SERIES
REMOTE DISPLAY FOR CONTROL
D2 - EPJ Graph (supplied with units in "PLUS" and "TOP" version only)
00
connect to terminal
3
of the display;
4.8
connect to terminal
4
of the display;
5.5
connect to terminal
2
of the display;
5.6
connect to terminal
1
of the display;
The remote display is only suitable for indoor use, it cannot be installed in areas with strong
vibrations, aggressive/corrosive agents, very dirty or high humidity.
MODBUS RS-485 CONNECTION
5.2
connect the negative pole (-) of the ModBus network;
5.3
connect the positive pole (+) of the ModBus network;
5.4
connect the GND of the ModBus network;
allows connection to a supervisory system (BMS) via ModBus RTU communication protocol on
RS-485 serial line
WATER COIL PUMP CONTROL
Control by voltage-free contact, which sends a consent to the external water pump, if present:
accessory A: cooling coil;
accessory B: heating coil.
REMOTE GENERAL ALARM
For remote signalling of a general alarm.
Voltage-free contact.
Contacts
6.5
/
6.6
NO (Normally Open)
3-WAY VALVE ACTUATOR (HEATING COIL)
00
e
24
power supply of the valve actuator;
7.4
0-10V control signal from PLC card;
3-WAY VALVE ACTUATOR (COOLING COIL)
00
e
24
power supply of the valve actuator;
7.5
0-10V control signal from PLC card;
