time betw. switch heat/cool
Setting range: 0 – 48 h
Factory setting: 2
mixing valve amplifier
Setting range: 0.1 –10.0
Default value: 1.0
mixing valve step delay
Setting range QN41: 10 – 300 s
Setting range QN18 and QN36: 10 – 500 s
Default values: 30 s
You can use F1345 to cool the house during hot periods
of the year.
Caution
Certain setting options only appear if their
function is installed and activated in F1345.
cool/heat sensor
An extra temperature sensor can be connected to F1345
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
Here you can set at which indoor temperature F1345 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 F1345
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 F1345
switches to cooling operation.
larm rumsgivare kyla
This is where you set whether F1345 is to initiate an
alarm if the room sensor is disconnected or breaks dur-
ing 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.
step difference compressors
Caution
This setting option only appears if cooling is
activated in menu 5.2.4.
The degree minute difference for controlling when the
next compressor is to start is set here.
degree minutes cooling
This selection is only available when the connected ac-
cessory 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.
heat dump 24h-function
If the heating is to be shunted to max supply line tem-
perature if there has been a heating requirement in the
last 24 hours it is set here.
closingtime for cool dump
Here, you set the number of seconds per time period
that the shunt valve must be closed when in ”Start of
active cooling” mode.
max compr. in active cooling
Set the max number of compressors that may be used
for cooling in those cases where several compressors
are available here.
time betw. switch heat/cool
This selection is only available when cooling in 2-pipe
systems.
Here you can set how long F1345 is to wait before it
returns to heating mode when the cooling demand has
ceased or vice versa.
mixing valve amplifier and mixing valve step
delay
Caution
This setting option only appears if passive
cooling is activated in menu 5.2.4.
Shunt reinforcement and shunt wait time for the cooling
system are set here.
17Chapter 3 | Control - MenusNIBE F1345
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