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Pump protection function
The controller performs the function of protecting the DHW pump, DHW pump and mixers
against blockage. It depends on their periodic activation (every 167 hours for a few
seconds). This protects the pumps from immobilization due to limescale build-up.
Therefore, when the boiler is not in use, the power supply to the controller should be
connected. The function is also performed when the controller is OFF using the keypad
(the controller is in the "boiler off" state).
Pellet tank feeder
After connecting add-on module B, the controller can cooperate with the low fuel level
sensor in the tank (fuel supply from the additional tank). After activating the sensor, the
controller activates the auxiliary feeder to refill the basic fuel tank.
Mains fuse replacement
The mains fuse is located inside the controller housing. The fuse may only be replaced by a
qualified person after disconnection from the mains. Use time-lag fuses, 5 x 20 mm
porcelain, with a rated current of 6.3 A.
Control panel replacement
It is not recommended to replace the control panel itself because the program in the panel
must be compatible with the program in the control module.
Lambda probe
The efficiency of the burner can be increased by connecting another oxygen sensor
module which should be connected according to the wiring diagram. Probe operation
must be enabled in the menu:
Service settings
If the Lambda Sensor Operation parameter is set to ON, the controller will operate using
data from the oxygen sensor. The amount of air supplied to the furnace is automatically
adjusted to obtain the desired oxygen content in the flue gas. If this parameter is set to
OFF, the values from the Lambda probe will not affect the operation of the controller. The
required oxygen values for the individual burner outputs are entered in the menu:
Service settings
It may be necessary to calibrate the oxygen sensor readings regularly. To calibrate
the probe, the boiler must first be switched off. For the calibration to take place
correctly, the fire in the boiler must be completely extinguished. The following
parameter is used to start the calibration:
Boiler settings
Lambda probe calibration
The calibration process takes approximately 8 minutes.
Boiler settings
Lambda probe
Boiler settings
Power modulation
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