Nibe VVM 320 - Advanced System Settings; Heating and Cooling Curve Adjustments

Connections, accessory card
FunctionInput
Room sensor system 2/3/4X2:19-20
Return line sensor 2/3/4X2:21-22
Flow line sensor 2/3/4X2:23-24
FunctionOutput
Mixing valve, closeK2
Mixing valve, openK3
External circulation pumpK4
Communications module (MODBUS 40)
IndicationLED
No function.BATT
No function.RUN
Flashes during communication with the
heat pump.
COM1
No function.LED 4 (-)
No function.LEV
No active communication between
Modbus 40 and "external control".
COM2
No function.SYNC
A steady light means that supply voltage
is OK.
VCC
Communications module (SMS 40)
■
The communication unit is connected to the input
circuit board (AA3-X4).
■
Allows basic settings of temperature, hot water, op-
erating mode and monitoring to be set via SMS or
mobile phone.
■
In event of power cut or when an alarm occurs an
SMS is sent to selected alarm recipients in menu 5.3.5.
■
The room sensor in the room unit is activated for
control of heat production via menu 1.9.4.
■
Mobile numbers must include country code e.g.
+46XXXXXXXX.
Current menus
Factory
setting
NameMenu
-Phone number5.3.5
-Alarm recipient
Indication
IndicationLED
A steady light if voltage in the battery is
above 0 V.
BATT
Out if the battery is discharged or if no
battery is installed.
No function.RUN
Flashes during communication with heat
pump and at start-up.
COM1
A steady light that indicates that 12V is
OK.
LED 4 (-)
Steady light when the GSM signal is OK.LEV
Out if the GSM signal is too low.
Flashes during communication with the
GSM modem.
COM2
Flashes when SMS 40 sends/receives SMS.SYNC
A steady light means that supply voltage
is OK.
VCC
Room unit (RMU 40)
■
The room unit is connected to the input circuit board
(AA3-X4).
■
Allows basic settings of temperature, hot water and
operating mode to be set remotely.
■
If the alarm occurs the room unit displays the relevant
alarm number.
■
The room sensor in the room unit is activated for
control of heat production via menu 1.9.4.
Current menus
Factory
setting
NameMenu
NoRMU 40 system x5.2
NoControl room sensor system x1.9.4
-Factor system x
29Chapter 4 | Description of functionsNIBE™ VVM 320