MENU 7.1.6.1 - MAX DIFF SUPPLY TEMP
Max diff compressor
Setting range: 1 – 25 °C
Max diff additional heat
Setting range: 1 – 24 °C
BT12 offset heat pump 1
Setting range: -5 – 5 °C
Here you set the maximum permitted difference between
the calculated and actual supply temperature in the event
of compressor or additional heat mode respectively. Max
difference additional heat can never exceed max difference
compressor
Max diff compressor: If the current supply temperature ex-
ceeds the calculated supply by the set value, the degree
minute value is set to +1. The compressor in the heat pump
stops if there is only a heating demand.
Max diff additional heat: If "Additional heat" is selected and
activated in menu 4.1 and the current supply temperature
exceeds the calculated temperature by the set value, the
additional heat is forced to stop.
BT12 offset: If there is a difference between external supply
temperature sensor (BT25) and temperature sensor, con-
denser supply (BT12), you can set a fixed offset here to
compensate for the difference.
MENU 7.1.6.2 - FLOW SETTINGS, CLIMATE SYS
Setting
Options: Radiator, Underfl heating, Rad + Und. heat., Own
setting
DOT
Setting range DOT: -40.0 – 20.0 °C
Delta temp at DOT
Setting range dT at DOT 2.0 – 20.0
The type of heating distribution system the heating medium
pump works towards is set here.
dT at DOT is the difference in degrees between supply and
return temperatures at design outdoor temperature.
MENU 7.1.6.3 - POWER AT DOT
Manually selected power at DOT
Setting range: on/off
Power at DOT
Setting range: 1 – 1,000 kW
Here, you set the power the property requires at DOT (dimen-
sioned outdoor temperature).
If you choose not to activate "Manually selected power at
DOT", the setting is made automatically, i.e. VVM S320 cal-
culates suitable power at DOT.
MENU 7.1.8 - ALARMS
In this menu, you make settings for the safety measures
that VVM S320 will implement in the event of any operational
disruption.
MENU 7.1.8.1 - ALARM ACTIONS
Reduce room temperature
Setting range: on/off
Stop producing HW
Setting range: on/off
Audio signal on alarm
Setting range: on/off
Select how you want the VVM S320 to alert you that there
is an alarm in the display here.
The different alternatives are that VVM S320 stops produ-
cing hot water and/or reduces the room temperature.
Caution
If no alarm action is selected, this can result in
higher energy consumption in the event of a mal-
function.
MENU 7.1.8.2 - EMERGENCY MODE
Immersion heater output
Setting range 1x230 V: 4 – 7 kW
Setting range 3x400 V: 4 – 9 kW
Settings are made in this menu for how the additional heat
will be controlled in emergency mode.
Caution
In emergency mode, the display is switched off. If
you feel the selected settings are insufficient, you
will not be able to change these.
MENU 7.1.9 - LOAD MONITOR
Fuse size
Setting range: 1 – 400 A
Transformer ratio
Setting range: 300 – 3,000
Detect phase sequence
Setting range: on/off
Here, you set fuse size and transformer ratio for the system.
The transformer ratio is the factor that is used to convert
the metered voltage to current.
Here, you can also check which current sensor is installed
on which incoming phase to the property (this requires the
current sensors to be installed). Perform the check by select-
ing "Detect phase sequence".
53Chapter 9 | Control – MenusNIBE VVM S320
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