Setting the operating regime
Description of the
SAFETY regime
Checked
everything works according to the rules given for the specific
mode defined by the combination of the selected symbols in
the first two items of the menu. The program protects the
heating system from low temperatures by not allowing the
operation of the boiler on temperature of
3˚C or below (which
is measured by the sensor in the boiler) because there is a
risk that the installation is frozen.
Bin
a system filled with a mixture of antifreeze and thus protected
from freezing. Everything works according to the rules given
for the specific operating regime which is defined by the
combination of selected symbols in the first two items of the
menu, but a part of the program that blocks the operation of
the boiler at a temperature of 3 °C or lower is switched off. In
other words, operation of the boiler is allowed regardless of
the possible low temperatures in the boiler. Also, there is no
need to warn about approaching to the lower limit of the
allowed temperature, as well as about the low temperature
errors.
Snowflake
activated freezing protection regime. This regime is designed
to protect against freezing of the system in a shorter period
(10 days), e.g. during winter, when there is no need for
heating in the house (apartment), but due to low outdoor
temperatures. There is a possibility that the system freezes if
the heating is switched off and the system is not filled with
antifreeze. The pump operates non-stop in this regime,
maintaining the temperature of the system from 7-
10˚C by
using 1/3 of the nominal power. The relay of the boiler is
switched off for 20 minutes and switched on again for 10
minutes to protect the heat exchanger in the boiler. When this
regime is selected, the first two items of the menu are
automatically de-checked, and no setting can be made until the
safety mode changes and one of the other two signs (operating
regimes) is selected instead of the snowflake.