Here you can set at which indoor temperature F1255 is to shift between heating
respectively cooling operation.
heat at room under temp.
Here you can set how far the room temperature can drop below the desired
temperature before F1255 switches to heating operation.
cool at room over temp.
Here you can set how high the room temperature can increase above the desired
temperature before F1255 switches to cooling operation.
larm rumsgivare kyla
This is where you set whether F1255 is to initiate an alarm if the room sensor
is disconnected or breaks during cooling operation.
start passive cooling
Here you can set when passive cooling is to start.
Degree minutes are a measurement of the current heating demand in the house
and determine when the compressor, cooling operation respectively additional
heat will start/stop.
start active cooling
Here you can set when active cooling is to start.
Degree minutes are a measurement of the current heating demand in the house
and determine when the compressor, cooling operation respectively additional
heat will start/stop.
compressor speed
Here you can set at what speed the compressor is to operate at during active
cooling. Set value corresponds to part of the available output.
degree minutes cooling
This selection is only available when the connected accessory itself counts
cooling degree minutes.
After a min or max value has been set, the system will automatically set the real
value in relation to the number of compressors that are running cooling.
time betw. switch heat/cool
This selection is only available when cooling in 2-pipe systems.
Here you can set how long F1255 is to wait before it returns to heating mode
when the cooling demand has ceased or vice versa.
39Chapter 3 | F1255 – at your serviceNIBE F1255
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