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CTC EcoZenith i250
General Information
Night reduction Holiday
The example above shows that the room temperature is 22.4
°C, but the desired value (setpoint) is 23.5 °C.
1 2
1 2
Room temp.
Heating circuit 1
Night reduction Holiday
8.3 Room temp.
This is used to set the desired room temperature. Use
the plus and minus buttons to set the temperature you
want, which gives you the “setpoint” temperature, in
brackets. You can see the current value next to the
brackets.
If two radiator systems are installed, the values for both
are displayed.
If you want to schedule a temperature reduction, you
can continue to the Night reduction or Holiday sub-
menus.
You can select Room sensor No under the Installer/
Define system/Radiator system menu. This can be
done if the room sensor is poorly positioned, if the floor
heating system has a separate room sensor or if you
use a fire place or open stove. The alarm LED on the
room sensor still functions as normal.
If you use the fire or open stove only occasionally, the
firing process can affect the room sensor and reduce
the temperature supplied to the radiators. It can then
get cold in the rooms in other parts of the house. The
room sensor can temporarily be deselected during the
firing process. The EcoZenith i250 then provides heating
to the radiators using the set heating curve. The radiator
thermostats reduce the heating supplied to the section
of the house where a fire is burning.
8.3.1 Setting temperature without a
room sensor
If a room sensor has not been installed (selected in
the Settings menu), you use this option to adjust the
room temperature by trimming the flow temperature.
If this range is not sufficient, the basic setting must be
adjusted under the Installer/Settings/Radiator system
menu.
Change the value in small steps each time (approx. 2
to 3 steps) and wait for the result (approx. one day), as
there is a delay in the system responding.
Several adjustments may be necessary at different
outdoor temperatures, but you will gradually achieve the
right setting that will not need to be changed.
The example above shows how it operates with two radiator
systems. Radiator system 1 with a room sensor and radiator
system 2 without one.
1 2
1 2
1 2
1 2
1 2
1 2
1 2
Night reduction Holiday
Heating circuit 2 (50)
Heating circuit 1
Room temp.