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In summer mode, the circulation pump operates for approx. 30 seconds after a maximum
idle period of 24 hours.
Anti-seizing pump
protection
Summer mode
Winter mode is disabled by rotating the heating water temperature selector into position.
The boiler then operates in summer mode. Summer mode (heating OFF) means
only DHW heating. Frost protection for the heating system and pump anti-seizing
protection, however, remain enabled.
Setting
Winter mode (settings 2 to 8)
In winter mode, the boiler heats the ow temperature to the value set on the thermostat.
According to the pump operating mode, the circulation pump operates constantly (factory
setting) or only in parallel with the burner activation / run-on period.
Emissions test mode
The emissions test mode is activated by rotating the heating water temperature selector
into position. The illuminated signal ring ashes yellow. After the emissions test
mode has been activated, the boiler will heat with the selected maximum output. Any
previous cycle block will be cancelled. The emissions test mode terminates after 15 minutes
or when the maximum ow temperature has been exceeded. To reactivate, turn the heating
water temperature selector anti-clockwise and then back into position
.
0
I
0
°C
20
40
60
80
100
120
ON/OFF switch Reset button
BM programming
module
Illuminated
signal ring
Thermometer
Control unit with BM programming module
17. Control unit
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