51
Setting
Factory
setting
Range
Explanation
Summer function
Pump summer stop
In use
In use/
Not in use
If S203 controls also the pump, the pump can be stopped while the summer
function mode is active.
Summer function outd. temp. limit 19.0
10 ... 35 °C
Summer function outdoor temperature limit. When the measured or forecast
outdoor temperature exceeds the outdoor temperature limit of the summer
function, the regulation valve closes and the circulation water pump stops (if
valve summer shut-down is in use).
Summer function inhibition limit
6.0
-10...20
The summer function is turned off immediately if the real-time outdoor tem-
perature falls to the ”Summer function inhibition limit.” The summer function is
also turned off if room temperature falls at least 0.5°C below the value setting
or when the S203 restarts.
Summer function off delay max
Summer function off delay factor
10
1.5
0...20h
0.5...3.0
The summer function switch off delay determines the starting time for heating.
This helps avoid unnecessary heating during summer in case the outdoor tem-
perature falls momentarily. The switch off delay is calculated as follows: [the
duration of the summer function] x [summer function off delayfactor] (limited to
the set max delay value). The switch off delay is reset if the room sensor is ac-
tive and the room temperature drops more than 0.5 °C below the set value, or
in the event of a power cut.
Outdoor temp. forecast
Not in
use
In use/
Not in use
S203 uses temperature forecasts from bus for continousing.
Valve summer shut-down
In use
In use/
Not in use
The setting is used to select whether or not the regulation valve is closed
when the summer function is in use.
Valve summer flushing
In use
In use/
Not in use
If controller is in summer function mode the flushing operation is activated
every Monday at 8.00. The controller opens the valve 20% open and then
closed. If the controller also controls the circulation pump, the circulation pump
is used during valve flushing.
Autumn drying
Autumn drying status
On/Off
The screen shows whether or not the autumn drying is on. Data is informative.
Autumn drying
Not in
use
In use/
Not in use
In autumn dry mode, supply water temperature is automatically raised for
20 days. The function is turned on automatically when the average daytime
temperature has been more than 7°C for a minimum of 20 days and then falls
below +7°C. The function remains on for the following 20 days if the outdoor
temperature is below 7°C.
°C
v
at least 20 days
continuous period of more than +7 °C
7°C
Time /
24 hours
v
days with medium heat
Autumn dry function is acti-
ve (a total of 20 days)
Temperature limit of Autumn
dry activation
Effect of autumn dry
Autumn dry effect on supply
water
Autumn dry effect on room temp.
4.0
1.0
0... 25 °C
0.0... 1.5 °C
The setting value shows how much the autumn dry function raises supply
water temperature. If room temperature is in use, the user sets how much the
room temperature’s setting value is increased.
Room compensation
Room compensation
In use
In use/
Not in use
It can defined whether room temperature affects to the control of supply water.
If the measured room temperature differs from its setting
value, room compensation corrects the temperature of the supply water.
Room temperature setting
21.5
5... 50 °C
Basic room temperature setting for the controller set by the user. This setting
value is not visible unless room compensation is in use.
Room temp.measurement delay
2.0
0...2 h
Amount of room temperature measurement delay. Different buildings react to
temperature changes at different rates. This setting value can reduce the ef-
fect of the building on the room temperature control.
Room compensation ratio
4.0
0...7
Coefficient used in applying the difference between room measurement and
the room setting value to the supply water setting value. For example, if room
temperature in radiator heating is one degree below the setting value, supply
water is raised by four degrees.
Comp. max.effect on supply water 16.0
0...25 °C
Room compensation’s maximum effect on the supply water.
Room comp.adjustm. time
(I-time)
2.5
0.5 ... 7 h
Time correction improves the room compensation function (I-regulation). In
massive houses or houses where floor heating has been installed on a con-
crete floor, longer room compensation correction times are used.
I control’s max effect on sup wat
3.0
0 ... 15 °C
Room compensation time correction can change supply water temperature to
no more than this setting value. If room temperature continuously fluctuates,
check whether the problem is resolved by lowering the setting value.
