25
ENGLISH
PROTECTIVE FUNCTIONS
The 'Protective functions‘ can be used by specialists to
activate and set various protective functions.
b
By no means does the controller replace the safety
appliances on site!
Anti Legionella
With the help of the anti legionella function (hereinafter referred
to as: "AL", the system can be heated up at selected times in
order to free it of legionella.
In the delivery state, the anti legionella function is switched off.
As soon as it has heated up with “AL” turned on, information with the date will be shown in the display.
This anti legionella function does not offer any secure protection against legionella, because the controller requires an
adequate added amount of energy and the temperatures cannot be monitored in the entire storage area and the con-
nected pipe system.
During the operation of the anti legionella function, if applicable, the storage is heated above the set value “Tmax”, which
may lead to scalding and system damage.
Limescale Protection
To prevent the accumulation of limescale, the circulation pump can continue to rinse the heat exchanger after a tapping
for max. 30 seconds or till the hot water sensor drops below Tset.
Discharge protection
This protection function is for the case that the necessary primary temperature cannot be guaranteed at all times.
When no storage sensor is connected:
If the setpoint temperature is not reached after 60 seconds, the currently measured temperature -3°C is used as new
setpoint temperature.
Once the pump in the primary circuit stops, the setpoint temperature is raised to the set Tset again.
When the storage sensor is connected:
If the temperature at the storage sensor is smaller than Tset -5°C, the target temperature is lowered to the currently meas-
ured storage temperature -5°C.
In both cases, Circ. Tmin is set to the new setpoint - Circ. Hysteresis -5 K. Here too, the newly calculated value for Circ.
Tmin will not be lower than 0 °C, and not higher than the set circ. Tmin.
Seizing Protection
If the anti-seizing protection is activated (daily, weekly, off), the controller switches the heat pump and the mixer on/off at
12:00 noon for 5 seconds to prevent seizing of the pump/valve after long periods of inactivity.
6. SPECIAL FUNCTIONS
Used to set basic items and expanded functions.
b
The settings in this menu should only be changed
by a specialist.
Press “esc” or select “Exit special functions” to exit the
menu.
Speed control
b
If the speed control is activated, itLFWC offers the
possibility through a special internal electronic system to change the speed of pumps depending on the process.
To run analyses on system data, time must be set correctly in the controller. The clock will stop and must be reset if
power to the controller is cut off for more than about 24 hours. With the exception of the clock, all settings must be
entrusted solely to expert service technicians.
Max. Speed
The maximum speed of the pump is determined here in %. During the setting, the pump runs in the respective speed and
the flow can be determined.
Exit protections
OK
5.1.Anti-legionella
5.3.Discharge protection
esc
Exit special functions
OK
6.2.Speed control V1
6.5.Signal settings V3
esc
Summary of Contents for SC ACS 160
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