When the switch is closed, the temperature changes
in °C (if the room sensor is connected and activated).
If a room sensor is not connected or not activated,
the desired change of “temperature” (heating curve
offset) is set with the number of steps selected. The
value is adjustable between -10 and +10. External
adjustment of climate systems 2 to 8 requires ac-
cessories.
– climate system 1 to 8
The value for the change is set in menu 1.9.2, "ex-
ternal adjustment".
• SG ready
Caution
This function can only be used in mains net-
works that support the "SG Ready" standard.
"SG Ready" requires two AUX inputs.
"SG Ready" is a smart form of tariff control, through
which your electricity supplier can affect the indoor,
hot water and/or pool temperatures (if applicable) or
simply block the additional heat and/or compressor in
the heat pump at certain times of the day (can be se-
lected in menu 4.1.5 after the function is activated).
Activate the function by connecting potential-free
switch functions to two inputs selected in menu 5.4
(SG Ready A and SG Ready B).
Closed or open switch means one of the following:
– Blocking (A: Closed, B: Open)
"SG Ready" is active. The compressor in the heat
pump and additional heat is blocked like the day's
tariff blocking.
– Normal mode (A: Open, B: Open)
"SG Ready" is not active. No effect on the system.
– Low price mode (A: Open, B: Closed)
"SG Ready" is active. The system focuses on costs
savings and can for example exploit a low tariff from
the electricity supplier or over-capacity from any own
power source (effect on the system can be adjusted
in the menu 4.1.5).
– Overcapacity mode (A: Closed, B: Closed)
"SG Ready" is active. The system is permitted to run
at full capacity at over capacity (very low price) with
the electricity supplier (effect on the system is set-
table in menu 4.1.5).
(A = SG Ready A and B = SG Ready B )
• +Adjust
Using +Adjust, the installation communicates with
the underfloor heating’s control centre* and adjusts
the heating curve and calculated supply temperature
according to the underfloor heating system’s recon-
nection.
Activate the climate system you want +Adjust to affect
by highlighting the function and pressing the OK but-
ton.
*Support for +Adjust required
Caution
This accessory may require a software up-
date in your VVM 320. The version can be
checked in the “Service info” menu 3.1.
Visit nibeuplink.com and click on the “Soft-
ware” tab to download the latest software
to your installation.
Caution
In systems with both under floor heating and
radiators, NIBE ECS 40/41 should be used
for optimum operation.
External blocking of functions
An external switch function can be connected to
VVM 320 for blocking various functions. The switch
must be potential-free and a closed switch results in
blocking.
NOTE
Blocking entails a risk of freezing.
Functions that can be blocked:
• hot water (hot water production)
• heating/cooling (production and distribution)
• additional heat (additional heat is blocked)
• compressor in heat pump EB101 and/or EB102
• tariff blocking (additional heat, compressor, heating,
cooling and hot water are disconnected)
Possible selections for AUX output
It is possible to have an external connection through the
relay function via a potential-free switching relay (max.
2 A) on the input board (AA3), terminal block X7. The
function must be activated in menu 5.4.
The picture shows the relay in the alarm position.
When switch (SF1) is in the " " or " " position the relay
is in the alarm position.
35Chapter 5 | Electrical connectionsNIBE VVM 320
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