Heating circuit control
59
Display and selection of the internal operating mode of the heating
circuit controller (see Operation sub-chapter)
Room temperature
Act. T.room
Display: Room temperature at the T.room room sensor
Set room temperature for setback mode in the internal operating level
Set room temperature for heating mode in the internal operating level
Display: Effective set room temperature, as defaulted by the current
operating mode.
Flow temperature
Act. T.flow
Set T.flow
Heat curve
Displays:
Current flow temperature at the T.flow sensor
Calculated set flow temperature
Sub-menu: Definition of the heat curve and the maximum and
minimum set flow temperatures (see Heat curve sub-chapter)
Matching of the control speed to the heating circuit (setting range
20 % - 500 %)
Outside temperature
Act. T.outs.
Average
Derivative time
Display: Outside temperature at the T.outside temperature sensor
Sub-menu: Adjusting the outside temperatures for the flow
temperature calculation and pump shutdown (see Average sub-
chapter)
Utilises the Time switch function to shift the point of changeover from
setback to standard mode subject to outside temperature (see
Derivative time sub-chapter)
Sub-menu: Pump shutdown and mixer conditions (see Shutdown
conditions sub-chapter)
Sub-menu: Frost protection conditions (see Frost protection sub-
chapter)
➢ In the internal operating level, the Operation setting can be changed from automatic
mode (Time/auto) to Standard, Setback or Standby/frost protection. If a RAS, RASPT, RAS-
PLUS or RAS-F room sensor is used, then RAS is displayed in automatic mode and the
operating mode set on the room sensor is displayed under that.
➢ If a room sensor is specified in the input variables but the sensor lead is short circuited,
the heating circuit controller will operate as if there was no room sensor specified in the
parameter settings.
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