5.4.4 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
OT limit value in summer mode
on n successive
days, summer mode is activated on the following day. This means that the valves in all heat
-
ing circuits are closed and the circulation pumps are switched off after t = 2 x valve transit
time. If the mean daytime temperature remains below the
OT limit value in summer mode
on
m successive days, summer mode is deactivated on the following day.
Functions
WE Configuration
Summer mode 0
01.06
2
30.09
1
18 °C
CO5 -> F04 - 1
Start summer mode/ 01.01 (1 Jan) to 31.12 (31 Dec)
No. of days until activation / 1 to 3
Stop summer mode / 01.01 to 31.12
No. of days until deactivation / 1 to 3
OT limit value in summer mode /0 to 30 °C
Note!
Summer mode only becomes effective when the controller is in automatic mode ( ).
5.5 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, increases or in-
creases and decreases. 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 out
-
door temperature in small steps. Assuming a
Delay
of 3 °C/h, the adaptation would take
th
C
Ch
==
°
°
12
3
4
/
.
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 direct sunshine.
In operating level, the outdoor temperature blinks on the display while delayed outdoor tem
-
perature adaptation is active. The calculated outdoor temperature is displayed.
EB 5575 EN 57
Functions of the heating circuit
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