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1.2. OPERATION MODE
This function enables the user to select one of five operation modes available:
Boiler priority - In this mode, water tank pump (DHW) is activated first in order to heat domestic water. Mixing
valves are activated once the pre-set DHW temperature is reached. The valves operate continuously until the water
tank temperature drops below the pre-set value by the pre-defined hysteresis.
Parallel pumps - In this mode, all active pumps and valves operate simultaneously. The valves maintain the pre-
set temperature and the water tank is heated to the pre-set temperature.
House heating - In this mode, only the house circulation is heated and the main task of the controller is to maintain
the pre-set valves temperature.
Summer mode - in this mode, the CH valves are closed to prevent unnecessary house heating. If the CH boiler
temperature is too high, the valve will be opened as an emergency procedure ( it requires activating ‘CH boiler
protection’ function!).
Auto summer mode - This option involves automatic switching between modes. When the external temperature
exceeds the activation threshold of Summer automatic mode, the valves will close. When the external sensor
detects that a given threshold has been exceeded, the controller switches to summer mode. Average temperature
is calculated on an ongoing basis. When it is lower than the pre-set value, the operation mode will switch to parallel
pumps.
1.3. CIRCULATION 1
This function enables the user to activate/deactivate the circulation and define the pre-set temperature.
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