Tech Controllers EU-2801 WiFi User Manual page 12

The <Heating reduction> function - This parameter is connected with the Weekly schedule which enables the
user to define the time periods for each day of the week when the CH boiler will operate based on the pre-set
temperature settings. After activating the thermostat and setting the Heating reduction function at Decrease,
the CH boiler will operate in two modes. In the weekly schedule periods the CH boiler will heat the rooms to
reach the pre-set temperature whereas outside these periods the CH boiler heat the rooms the the temperature
of pre-set temperature decrease.

Weather – After selecting this function, the pre-set CH boiler temperature depends on the outside temperature
value. The user sets the Weekly schedule settings.
Settings – this function (apart from the possibility of setting the heating reduction and room thermostat - as in
the case of constant temperature) also serves to define the Heating curve and Influence of the room sensor.
The user may set the following parameters:
 Heating curve – it serves to define the pre-set CH
boiler temperature
temperature. In our controller the curve consists of
four points of external temperature :
10°C, 0°C, -10°C and -20°C.
Once the heating curve has been defined, the controller
reads the outside temperature value and adjusts the
pre-set boiler temperature accordingly.
 Influence of the room sensor – activating this function results in more dynamic heating to reach the
pre-set value in case of significant temperature difference (e.g. when we want to reach the pre-set room
temperature quickly after airing the room). By setting the hysteresis of this function, the user may
decide how big the influence should be.
 Room temperature difference – this setting is used to define a single unit change in the current room
temperature at which a pre-defined change in the pre-set temperature of the CH boiler will be
introduced.
Example:
Room temperature difference 0,5°C
Change of pre-set CH boiler temperature 1°C
Pre-set CH boiler temperature 50°C
Pre-set temperature of the room regulator 23°C
Case 1. If the room temperature increases to 23,5°C (by 0,5°C), the pre-set CH boiler temperature
changes to 49°C (by 1°C).
Case 2. If the room temperature drops to 22°C (by 1°C) , the pre-set CH boiler temperature changes to
52°C (by 2°C).
 Change of pre-set temperature – this function is used to define by how many degrees the pre-set CH
boiler temperature is to increase or decrease with a single unit change in the room temperature (see:
Room temperature difference). This function is available only with TECH room regulator and it is closely
related to <Room temperature difference parameter>.
based on the outside
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