Nibe F1245 Installer Manual page 46

set pt value cool/heat sensor
Caution
This setting option only appears if sensors for
cooling/heating (BT74) are installed and activ-
ated in F1245.
Here you can set at which indoor temperature F1245
is to shift between heating respectively cooling opera-
tion.
heat at room under temp.
Caution
This setting option only appears if a room
temperature sensor is connected to F1245 and
has been activated.
Here you can set how far the room temperature can
drop below the desired temperature before F1245
switches to heating operation.
start passive cooling
Caution
This setting option only appears if "passive/act-
ive cooling" is activated in menu 5.2.4.
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
Caution
This setting option only appears if "passive/act-
ive cooling" is activated in menu 5.2.4.
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.
cool at room over temp.
Caution
This setting option only appears if a room
temperature sensor is connected to F1245 and
has been activated.
Here you can set how high the room temperature can
increase above the desired temperature before F1245
switches to cooling operation.
time betw. switch heat/cool
Here you can set how long F1245 is to wait before it
returns to heating mode when the cooling demand
has ceased or vice versa.
44 Chapter 8 | Control - Menus
close mix. valves in cool mode
Caution
This setting option only appears if passive
cooling is activated in menu 5.2.4.
If the heat pump is connected to more than one climate
system condensation may occur in these if they are not
intended for cooling.
To avoid this check "close mix. valves in cool mode",
which means that the sub-shunts for the extra climate
systems close when cooling operation is activated.
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.
Menu 1.9.6 - fan return time (accessory re-
quired)
speed 1-4
Setting range: 1 – 99 h
Default value: 4 h
Here you select the return time for temporary speed
change (speed 1-4) on the ventilation in menu 1.2.
Return time is the time it takes before ventilation speed
returns to normal.
Menu 1.9.7 - own curve
supply temperature
Setting range: 0 – 80 °C
You can create your own heating curve here, if there
are special requirements, by setting the desired supply
temperatures for different outdoor temperatures.
Caution
Curve 0 in menu 1.9.1 must be selected for this
curve to apply.
Menu 1.9.8 - point offset
outdoor temp. point
Setting range: -40 – 30 °C
Default value: 0 °C
change in curve
Setting range: -10 – 10 °C
Default value: 0 °C
Select a change in the heating curve at a certain out-
door temperature here. One step is usually enough to
NIBE™ F1245