Fujitsu Waterstage WS G140DC6 Series Maintenance Document page 57

Split system (Single phase and 3-phase type)
Heating curve displacement
The curve shift (offset)
temperature in a general and even manner over the
full range of outdoor temperature. In other words,
the shift should be corrected when the room
temperature is generally too high or too low.
Heating curve adaption
Adaptation enables the controller to automatically
adapt the heating curve to the present conditions.
This correction may
deactivated.
In the latter case, there is no need to correct the
slope and shift.
Eco Functions
Line no.
HC1 HC2
730 1030
732 1032
Summer/winter heating limit
The summer/winter heating limit switches the heating
on or off through the year according to the
temperature ratio.
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
Example:
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 fluctuating temperatures.
Maintenance Document 1544-1
modifies the
only be activated
Programming line
Summer/winter heating limit
24-hour heating limit
Changeover is performed
Information:
To ensure operation, the following requirements
must be met:
flow
A room sensor must be connected.
-
The "room influence" parameter must be
-
set between 1 and 99.
The reference room (where the room
-
sensor is installed) must not contain adjusted
thermostatic valves. If present in the room, these
valves must be fully open.
Operation of this function requires an
-
adaptation period which can take more or less time
or
(approx. 1 week) depending on weather conditions
and on the stability of the room temperature
setpoint.
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.
Attenuated outdoor T
Sum/win heating limit + 1°C
Sum/win heating limit
Sum/win heating limit - 1°C
Thus, in the following example the changeover
temperature will be 18°C, computed as follows:
Days
57