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10 User controls and their function
10.4
Version D
ON
After switching on, the boiler starts (after approx.
10 seconds).
The fire protection device is opened.
This symbol appears on the display while the fire
protection device is being opened (approx. 2
minutes).
After the fire protection device has been opened,
the ignition process starts and the symbol for igni-
tion is displayed.
37
Operating Manual
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