Atag BC100124, Appliance Technical Manual

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Boiler de-aeration program
Combi boiler
The boiler is equipped with an automatic boiler de-aeration program.
The installation system needs to be filled with water and bled free of air before turning
power onto the boiler. Then the automatic de-aeration program will ensure that the boiler
is free of air before firing up.
The automatic de-aeration program starts when the water pressure in the boiler gets to
1.1 bar. The complete program for the boiler de-aeration takes 7 minutes.
During this 7 minutes, the pump is started and stopped and the three way diverter valve
is alternately sent to the heating and to the DHW position several times and with short
pauses to make sure that the air inside the boiler leaves through the automatic air vent.
System boiler
Same as combi, but there is no internal diverter valve to move.
Regular boiler
Same as combi, but there is no diverter valve to move or a pressure reading and there is a
feed & expansion tank.
1. Turn on the boiler electrical supply
2. When the boiler starts up for the first time the following will be shown:
- -
(power on)
All digits (segment test)
0
(parameter 9: from factory 0)
1
(boiler type: parameter 8)
03
followed by 07 (software version part 1 and software version part 2)
3. The code 105 appears on the display; The 7 minute de-aeration cycle starts
4. Vent the entire heating installation starting at the lowest point
5. Check the water pressure and top up if necessary to 1.0 – 1.2 bar
6. Check the filling loop if it is closed
%
bar
°C
°C
Commissioning function
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