Explanation of the operating elements
Operation
10
Frost protection function
The frost protection circuit prevents the heating system
from freezing by automatically switching on the pump.
Flow sensor frost protection
The frost protection function is activated if the flow
temperature drops below 7°C.
The frost protection function is deactivated if the flow
temperature rises above 9°C.
Outdoor sensor frost protection
The frost protection function is activated if the outside
temperature drops below 0°C. The pumps are activated
and the burner is enabled.
Temperature monitor operation
The boiler pump runs continuously if boiler max. has been
reached. Deactivation with 5k hysteresis.
Pump-controlled return flow temperature increase
ON: Return flow temperature < Minimum return flow
temperature
OFF: Return flow temperature > Minimum return flow
tempe 5K or burner OFF.
Mixer-controlled return flow temperature increase
Mixer CLOSE = Heat is transported into heating system:
Return flow temperature > Minimum return flow
temperature.
Mixer OPEN = Short circuit/blocking of generator:
Return flow temperature < Minimum return flow
temperature or [burner OFF and after-run time of pump
has elapsed].
EEPROM check
Every 10 minutes, a check is conducted automatically in
order to establish whether the settings of the controller lie
within the specified limits. If a value is found to be out-of-
range, it is substituted by the related default value. The
range transgression is indicated by the flashing error
number 81.
In this case, the user should check the important settings
of the controller. The error indication symbol goes out after
the unit is restarted (RESET).
Pump blocking protection
The controller effectively prevents the pumps blocking
following longer periods out of operation. The integrated
protection function activates for 5 seconds all pumps that
have not been in operation during the past 24 hours.
Mixer motor blocking protection
If the mixer was not moved for 24 hours, it is fully opened
once only. The heating circuit pump is switched off during
this time. The maximum flow temperature is monitored.
Cancelled at maximum flow temperature – 5K.
Delayed pump switch-off
When a heat generator is shut off the assigned pump runs
on for 5 minutes. The return flow temperature increase
pump is shut off immediately.
