heat/cool sen.
An extra temperature sensor can be connected to VVM 320 in order to determine
when it is time to switch between heating and cooling operation.
When several heating/cooling sensors are installed, you can select which one
of them should be in control.
Caution
When the heating/cooling sensors BT74 have been connected and
activated in menu 5.4, no other sensor can be selected in menu 1.9.5.
set pt value cool/heat sensor
Caution
This setting option only appears if a room sensor for cooling/heating
is installed and activated in VVM 320.
Here you can set at which indoor temperature VVM 320 is to shift between
heating respectively cooling operation.
heat at room under temp.
Caution
This setting option only appears if a room temperature sensor is con-
nected to VVM 320 and has been activated.
Here you can set how far the room temperature can drop below the desired
temperature before VVM 320 switches to heating operation.
cool at room over temp.
Caution
This setting option only appears if a room temperature sensor is con-
nected to VVM 320 and has been activated.
Here you can set how high the room temperature can increase above the desired
temperature before VVM 320 switches to cooling operation.
41Chapter 3 | VVM 320 – at your serviceNIBE VVM 320
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