Nibe S1256PC Installer Manual page 53

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".
MENU 7.1.10 - SYSTEM SETTINGS
You make your various system settings for your installation
here.
MENU 7.1.10.1 - OPERATING PRIORITISATION
Auto mode
Setting option: on/off
Min
Setting range: 0 – 180 minutes
Here, you select how long the installation will work with each
demand, if there are several simultaneous demands.
"Operating prioritisation" is normally set in "Auto", but it is
also possible to set prioritisation manually. Select how long
the installation should work with each demand, if there are
several demands at the same time.
Auto: In auto mode, S1256PC optimises operating times
between different requirements.
Manual: You select how long the installation will work with
each demand, if there are several demands at the same time.
If there is only one demand, the installation works with that
demand.
If 0 minutes are selected, this means that the demand is not
prioritised, but will instead only be activated when there is
no other demand.
Operating
prioritisation
Pool 1
NIBE S1256PC
Auto mode
Auto mode
Min
Hot water
Heating
Pool 1
Cooling
MENU 7.1.10.2 - AUTO MODE SETTING
Start cooling
Setting range: 15 – 40 °C
Stop heating
Setting range: -20 – 40 °C
Stop additional heat
Setting range: -25 – 40 °C
Filtering time
Setting range: 0 – 48 h
Time betw. cooling and heating
Setting range: 0 – 48 h
Cooling/heat sensor
Setting range: None, BT74, Zone 1 - x
Set point value cool/heat sensor
Setting range: 5 – 40 °C
Heating at subnormal room temp
Setting range: 0.5 – 10.0 °C
Cooling at excess room temp
Setting range: 0.5 – 10.0 °C
Stop heating, Stop additional heat: In this menu, you set the
temperatures that the system will use for control in auto
mode.
Filtering time: You can set the time over which the average
outdoor temperature is calculated. If you select 0, the cur-
rent outdoor temperature is used.
Time betw. cooling and heating: Here, you can set how long
S1256PC will wait before it returns to heating mode when
the cooling demand has ceased or vice versa.
Cooling/heat sensor
Here, you select the sensor that will be used for cooling/heat-
ing. If BT74 is installed, it will be preselected and no other
option is possible.
Set point value cool/heat sensor: Here, you can set the in-
door temperature at which S1256PC will shift between
heating and cooling operation.
Heating at subnormal room temp: Here, you can set how far
the room temperature may drop below the desired temper-
ature before S1256PC switches to heating operation.
Cooling at excess room temp: Here, you can set how high
the room temperature may increase above the desired
temperature before S1256PC switches to cooling operation.
Chapter 9 | Control - Menus 53