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System-wide functions
8.5
Summer mode
Summer mode is activated depending on the mean daytime temperature (measured between
7.00h and 22.00h) during the desired period.
If the mean daytime temperature exceeds the Outdoor temperature limit on two consecutive
days, summer mode is activated on the following day: the heating is switched off. If the mean
daytime temperature remains below the Outdoor temperature limit on the next day, summer
mode is deactivated on the following day.
Function
Summer mode
8.6
Delayed outdoor temperature adaptation
The calculated outdoor temperature is used to determine the flow temperature set point. The
heat response is delayed when the outdoor temperature either decreases, or increases and de-
creases. If the outdoor temperature varies by, for example, 12 °C within a very short period of
time, the calculated outdoor temperature is adapted to the actual outdoor temperature in small
steps. Assuming a Delay of 3 °C/h, the adaptation would take t
Note!
The delayed outdoor temperature adaptation helps avoid unnecessary overloads of central
heating stations in combination with either overheated buildings occurring, for example, due to
warm winds, or temporarily insufficient heating due to the outdoor sensor being exposed to di-
rect sunshine.
Function
Delayed outdoor temperature adaptation
54
EB 5474 EN
WE
Configuration
ON
Co5 -> Fb06 = ON
01.06
Start summer mode / 01.01 to 31.12
30.09
Stop summer mode / 01.01 to 31.12
18 °C
Outdoor temperature limit /0 to 40 °C
WE
Configuration
OFF
Co5 -> Fb01 = ON
AB
Delay on decreasing temperature
ABAUF
Delay on decreasing and increasing
temperature
3 °C/h
Delay / 1 to 6.0 °C/h
°
=
=
12
C
4 h.
°
C h
3
/
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