ENGLISH
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NOTE:
Some auxiliary functions require an additional input or output for connection of temperature sensors,
pump or solenoid valves. Some functions can be disabled in the FUN menu, depending on the system's
equipment.
The FUN sub-menu includes:
DVWG:
Anti-legionella function
4.6.1
CIRC:
Temperature control of hot water circulation pump
4.6.2
BYPR:
Transfer of thermal excess energy from the storage tank
4.6.3
DVWG: Anti-legionella
Description
If the water temperature has been below 70°C for 7 days, the additional heating device is switched on at
01:00 on the seventh day and heats the water to 70°C to prevent the growth of legionella bacteria in the
storage tank.
Setting
Open the FUN menu and DVWG submenu. DVWG OFF is displayed. The factory setting is disabled.
Press the SET button. OFF flashes.
Use the + and - buttons to activate the function. DVWG ON flashes.
Press the ESC button to save the settings and exit the menu. The settings are saved automatically.
The menu closes after 20 seconds of inactivity.
CIRC: Temperature control of hot water circulation pump
Description
A temperature-controlled auxiliary circulation pump for hot water can be connected to the system’s P2
output. A temperature sensor must be fitted on the return line for hot water and be connected to input T4.
The P2 circulation pump starts if the T4 temperature sensor detects a lower temperature than the
specified switch-on temperature, and stops when the temperature exceeds the specified switch-off
temperature.
Factory setting
Setpoint temperature for hot water is 40°C. The P2 circulation pump starts at the temperature (T4) = 35°C
and stops at the (T4) = 40°C.
Switch-on conditions for hot water circulation pump
The hot water circulation pump can only be started if the storage tank temperature (T2) is at least 7°C
higher than the specified hot water temperature.
NOTE:
Sensor T4 on the hot water return line must be installed 1.5 m from the storage tank to avoid large
temperature measurement errors. This function is not available on all systems.
Setting
Open the FUN menu and CIRC submenu. CIRC --- is displayed. The factory setting is disabled.
Press the SET button. --- flashes.
Press SET again. 40°C flashes.
