Samson 5100 OT activation value in rated operation, Summer mode, Functions of the heating circuit

Functions of the heating circuit

When the outdoor 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 10 °C to save energy. Nevertheless, remember that the system requires some time in the morning to heat up the building (–> Outdoor temperature-dependent advance heating, section 5.7).

Parameter	WE	Parameter level / Range of values
OT deactivation value	10 °C	PA1, 2, 3 / –10 to 50 °C
in reduced operation

5.5.3 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 OT activation value in rated operation. When the limit value is exceeded (plus 0.5 °C hysteresis), reduced operation is restarted.

This function is activated at very low temperatures to avoid the building cooling down exces- sively outside the times-of-use when low outdoor temperatures occur.

Parameter	WE	Parameter level / Range of values
OT activation value	–15 °C	PA1, 2, 3 / –30 to 50 °C
in rated operation

5.5.4 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 Outdoor temperature limit in summer mode 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 in summer mode on the next day, summer mode is deactivated on the following day.

Functions	WE	Configuration
Summer mode	OFF	Co1, 2, 3 -> Fb11 = ON
	01.06	Start summer mode / 01.01 (1 Jan) to 31.12 (31 Dec)
	30.09	Stop summer mode / 01.01 to 31.12
	18 °C	Outdoor temperature limit in summer mode / 0 to 30 °C

44EB 5179 EN