Fujitsu WATERSTAGE 112 Maintenance Document page 85

Heat Pump, Split System, Single Service, 3 phase
Flow Setpoint Limitation
Line no. Programming line
923 Flow temp setp min at OT 25°C
924 Flow temp setp min at OT 35°C
It is possible to assign a lower limit to the cooling flow
temperature.
The limitation line will be defined by two reference
points.
In addition the resulting flow setpoint will have a lower
limit and may not be less than 5 °C.
Flow temp setp min at OT 25°C
Determines the lowest flow temperature for a
composite outdoor temperature of 25°C.
Room Influence
Line no. Programming line
928 Room influence
When using a room temperature sensor there are 3
different types of control to choose from.
SETTING
- - - %
1...99 %
100 %
* Requires the connection of an outdoor sensor
Simple control according to outdoor conditions
The flow temperature is obtained from the composite
outdoor temperature on the basis of the cooling
characteristic.
Maintenance Document 1394-1
Flow temp
setpoint
923
924
25°C
CONTROL TYPE
Simple control according to outdoor conditions *
Control according to outdoor conditions with room influence *
Control according to room temperature only
Flow temp setp min at OT 35°C
Determines the lowest flow temperature for a
composite outdoor temperature of 35°C.
Warning:
If no outdoor temperature is available, the controller
will use the "Min. flow setpoint at OT= 35°C"
parameter.
Flow temp
setpoint
Averaged
35°C
OT
This type of control requires the cooling curve to be
properly adjusted, as the control does not take the
room temperature into account for this adjustment.
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