Nibe S1255 Installer Manual page 39

Caution
An increase in the room temperature can be
slowed by the thermostats for the radiators or
under floor heating. Therefore, open the thermo-
stats fully, except in those rooms where a cooler
temperature is required, e.g. bedrooms.
TIP
If the room temperature is constantly too low/high,
you increase/decrease the value by one step in
menu 1.1.1.
If the room temperature changes when the out-
door temperature changes, you increase/decrease
the curve slope by one step in menu 1.30.1.
Wait 24 hours before making a new setting, so that
the room temperature has time to stabilise.
MENU 1.3 - ROOM SENSOR SETTINGS
Here, you make your settings for room sensors and zones.
The room sensors are grouped by zone.
Here, you select the zone to which a sensor will belong. It is
possible to connect multiple room sensors to each zone.
Each room sensor can be given a unique name.
The control of heating and cooling is activated by ticking
the relevant option. Which options are shown depends on
which type of sensor is installed. If control is not activated,
the sensor will be the displaying sensor.
Caution
A slow heating system such as underfloor heating
may be inappropriate for controlling with room
sensors.
If there is more than one zone and/or climate system, the
settings are made for each zone/system.
MENU 1.3.4 - ZONES
Here, you add and name zones. You also select the climate
system to which a zone is to belong.
MENU1.4 - EXTERNAL INFLUENCE
Information for the accessories/functions that can affect
the indoor climate and that are active is shown here.
MENU 1.5 - CLIMATE SYSTEM NAME
You can give the installation's climate system a name here.
MENU 1.30 - ADVANCED
Menu "Advanced" is intended for the advanced user. This
menu has several sub-menus.
"Curve, heating" Setting the heating curve slope.
"External adjustment" Setting the heating curve offset when
the external contact is connected.
NIBE S1255
"Lowest supply heating" Setting minimum permitted supply
temperature during heating operation.
"Highest supply heat" Setting maximum permitted supply
temperature for the climate system.
"Own curve" You can create your own heating curve here,
if there are special requirements, by setting the desired
supply temperatures for different outdoor temperatures.
"Point offset" Select a change in the heating curve at a cer-
tain outdoor temperature here. One step is usually enough
to change the room temperature by one degree, but in some
cases several steps may be required.
MENU 1.30.1 - CURVE, HEATING
Curve, heating
Setting range: 0 – 15
In menu "Curve, heating" you can view the heating curve
for your house. The task of the heating curve is to provide
an even indoor temperature, regardless of the outdoor
temperature. It is from this heating curve that S1255 determ-
ines the temperature of the water to the climate system,
the supply temperature, and therefore the indoor temperat-
ure. Here, you can select heating curve and read off how
the supply temperature changes at different outdoor tem-
peratures.
TIP
It is also possible to create your own curve. This
is done in menu 1.30.7.
Caution
With underfloor heating systems, the maximum
supply temperature is normally set between 35
and 45 °C.
TIP
If the room temperature is constantly too low/high,
you increase/decrease the curve offset by one
step.
If the room temperature changes when the out-
door temperature changes, you increase/decrease
the curve slope by one step.
Wait 24 hours before making a new setting, so that
the room temperature has time to stabilise.
MENU 1.30.3 - EXTERNAL ADJUSTMENT
Climate system
Setting range: -10 – 10
Setting range (if room sensor is installed): 5 – 30 °C
Chapter 9 | Control - Menus 39