Ot Activation Value In Rated Operation; Summer Mode - Samson TROVIS 5573 Mounting And Operating Instructions

The valve is closed and the pump is switched off after t = 2 x valve transit time. When the out-
door temperature falls below this value (less 0.5 °C hysteresis), heating operation is restarted
immediately.
With the default settings, this means that, at night, the system is switched off at an outdoor tem-
perature of 15 °C to save energy. Nevertheless, remember that the system requires some time in
the morning to heat up the building.
Parameter
OT deactivation value
in reduced operation

5.4.3 OT activation value in rated operation

If a heating circuit is in reduced operation (automatic mode), the circuit is automatically trans-
ferred 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 hysteresis), reduced op-
eration is restarted.
This function is activated at very low temperatures to avoid that the building cools down exces-
sively outside the times-of-use when low outdoor temperatures occur.
Parameter
OT activation value
in rated operation

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 heating
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 succes-
sive days, summer mode is deactivated on the following day.
Function
Summer mode
WE Parameter level / Range of values
15.0 °C PA1, 2 / –20.0 to 50.0 °C
WE Parameter level / Range of values
–15.0 °C PA1, 2 / –20.0 to 5.0 °C
WE Configuration
0 CO5 -> F04 - 1
01.06 Start summer mode/ 01.01 (1 Jan) to 31.12 (31 Dec)
2 No. of days until activation / 1 to 3
30.09 Stop summer mode / 01.01 to 31.12
1 No. of days until deactivation / 1 to 3
18.0 °C OT limit value summer mode / 0 to 30 °C
Functions of the heating circuit
EB 5573 EN
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