Samson TROVIS 5579, Монтаж и эксплуатация, Страница: 76 / 182

temperature of 15 °C to save energy. Nevertheless, remember that the system requires some
time in the morning to heat up the building.
Parameter
WE Parameter level / Range of values
OT deactivation value
in reduced operation
15 °C PA1, 2, 3 / –20 to 50 °C
5.4.3 OT activation value in rated operation
If a heating circuit is in reduced operation (automatic mode), the circuit is automatically
transferred to rated operation when the outdoor temperature falls below the limit value OT
activation value in rated operation . When the limit value is exceeded (plus 0.5 °C hyster-
esis), reduced operation is restarted.
This function is activated at very low temperatures to avoid that the building cools down ex-
cessively outside the times-of-use when low outdoor temperatures occur.
Parameter
WE Parameter level / Range of values
OT activation value
in rated operation
–15 °C PA1, 2, 3 / –20 to 5 °C
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 summer mode /0 to 30 °C
Note:
Summer mode only becomes effective when the controller is in automatic mode ( ).
76
EB 5579 EN
Functions of the heating circuit