Nibe F1255 Installer Manual page 48

Menu 5.1.14 - flow set. climate system
presettings
Setting range: radiator, floor heat., rad. + floor heat.,
DOT °C
Default value: radiator
Setting range DOT: -40.0 – 20.0 °C
Factory setting DOT: -18.0 °C
own setting
Setting range dT at DOT: 0.0 – 25.0
Factory setting dT at DOT: 10.0
Setting range DOT: -40.0 – 20.0 °C
Factory setting DOT: -18.0 °C
The type of heating distribution system the heating
medium pump (GP1) works towards is set here.
dT at DOT is the difference in degrees between flow and
return temperatures at dimensioned outdoor temperat-
ure.
Menu 5.1.22 - heat pump testing
NOTE
This menu is intended for testing F1255 accord-
ing to different standards.
Use of this menu for other reasons may result
in your installation not functioning as intended.
This menu contains several sub-menus, one for each
standard.
Menu 5.1.24 - blockFreq
blockFreq 1
Selectable setting range in the display:
start: 17 – 115 Hz
stop: 22 – 120 Hz
Maximum setting range: 50 Hz.
blockFreq 2
Selectable setting range in the display:
start: 17 – 115 Hz
stop: 22 – 120 Hz
Maximum setting range: 50 Hz.
Here you can set a frequency range where the com-
pressor is blocked. The parameters for the setting range
differ depending on which product is controlled by the
setting.
NOTE
A large blocked frequency range can cause the
compressor to run jerkily.
48 Chapter 8 | Control - Menus
Menu 5.2 - system settings
Make different system settings for the heat pump here,
e.g. which accessories are installed.
There are two ways of activating connected accessories.
You can either highlight the alternative in the list or use
the automatic function "search installed acc.".
search installed acc.
Mark "search installed acc." and press the OK button to
automatically find connected accessories for F1255.
Caution
Certain accessories are not found automatically
but must be ticked off by hand, see menu 5.4.
NOTE
Only mark the option for ground water pump
if the accessory AXC 40 is to be used to control
the circulation pump.
Menu 5.3 - accessory settings
The operating settings for accessories that are installed
and activated are made in the sub-menus for this.
Menu 5.3.1 - FLM
continuous pump op.
Setting range: on/off
Factory setting: off
time between defrosts
Setting range: 1 – 30 h
Default value: 10 h
months btwn filter alarms
Setting range: 1 – 12
Default value: 3
activate cooling
Setting range: on/off
Factory setting: off
continuous pump op.: Select for continuous operation
of the circulation pump in the exhaust air module.
time between defrosts: Set the minimum time that
must pass between defrostings of the heat exchanger
in the exhaust air module.
When the exhaust air module is in operation the heat
exchanger is cooled so that ice builds up on it. When too
much ice builds up the heat transfer capacity of the heat
exchanger is reduced and defrosting is required. Defrost-
ing warms up the heat exchanger so that the ice melts
and runs off via the condensation hose.
months btwn filter alarms: Set how many months
should pass before the heat pump informs that it is time
to clean the filter in the exhaust air module.
NIBE™ F1255