Fujitsu WATERSTAGE WOYG160LJL Maintenance Document page 69

Eco Functions
Line Nr
HC1 HC2
730 1030
732 1032
The summer/winter heating limit
The summer/winter heating limit switchwes the heating on
or off through the year according to the temperature ratio.
Changeover is performed automatically when in automatic
mode and thus avoids the user having to turn the heating
on or off . Changing the input value makes the respective
annual periods (summer/winter) shorter or longer.
• If the value is increased
Changing to winter operating mode is advanced,
changing to summer mode is delayed.
• If the value is decreased
Changing to winter mode is delayed; changing to
summer mode is advanced.
Information
This function does not work in "Continuous Comfort
temperature" mode. (Sunlight) The controller displays "ECO".
The outdoor temperature is attenuated to take the
building's dynamics into account.
Example
Attenuated outdoor T
Waterstage / Maintenance Manual / 2105 - EN
Programming line
Summer/winter heating limit
24-hour heating limit
Sum/win heating limit + 1°C
Sum/win heating limit
Sum/win heating limit - 1°C
Days
24-hour heating limit
The 24-hour heating limit is used to switch the heating
on and of in the course of the day, depending on the
outside temperature.This function is used mainly during
intermediate seasons (spring and fall) to react rapidly in
case of fl uctuating temperatures.
Thus, in the following example the changeover
temperature will be 18 °C, computed as follows:
Comfort heating setpoint (710)
24-Hour heating limit (732)
Changeover temperature (710 - 732)
Heating off
Diff erential (Fixed)
Changeover temperature Heating on
Changing the input value makes the respective heating
periods shorter or longer.
- If the value is increased: changeover to heating
mode is advanced; changeover to ECO is delayed.
- If the value is decreased: changeover to heating
mode is delayed; changeover to ECO is advanced.
Information
This function will not work in "Continuous Comfort
temperature" mode. The display will show "ECO".
The outdoor temperature is attenuated to take the
building's thermal dynamics into account.
Flow temperature setpoint
Line Nr
HC1 HC2
740 1040
741 1041
This limitation allows to defi ne a range for the orders
to start. When instructed to start the heating circuit
reaches the threshold, this record remains permanently
at the maximum or minimum, even if the heat demand
continues to increase or decrease.
22°C
=19°C
=18°C
Programming line
Flow temp setpoint min (for fan
convectors)
Flow temp setpoint max
-3°C
-1°C
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