EbV Product documentation THETA NORM/UNIT
7-1
7 General controller functions
7.1 Outside Temperature Measurement
7.1.1 Determination of long-time value and mean value
Function: Three values are used to calculate the effect of the outside temperature on the heating
behavior of the plant.
Current outside temperature:
Value of sensor at time of measurement
Long-time value outside temperature:
• Is required for summer switch-off and for mean value
• Is the mean value of the outside temperature during the time period set for the
building type
• Every 20 minutes, a new, current value is entered into the mean value calculation
Mean value outside temperature:
• Is required for the calculation of the required flow temperature of the heating circuits
• Is the mathematical mean value of the current outside temperature and the long-time
value
7.1.2 Building type
Function: This parameter considers the building type by adapting the calculation of the outside
temperature mean value according to the setting.
Light
construction The mean value is obtained over a period of 6 hours.
Application: wooden houses, lightweight brick buildings
Medium
construction The mean value is obtained over a period of 24 hours.
Application: medium-weight masonry with hollow blocks or bricks
Heavy
construction The mean value is obtained over a period of 72 hours.
Application: heavy masonry in tuff or natural stone
Operation:
Note on operation Key / parametertree Parameter
Setting building type SYSTEM PARAMETER 10
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