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7.2 Procedure
Warning!
Danger of asphyxiation due to carbon monoxide!
If the boiler is operating, carbon monoxide can be emitted through
the open ash doors.
Do not leave the ash doors open any longer than necessary.
Caution!
Danger of burns from hot surfaces!
During operation, the boiler surfaces under the cladding are hot.
Even when turned off, they only cool down slowly.
Only touch the hot surfaces with the carrying grip or wait until the
surfaces have cooled down before starting with the cleaning and
maintenance work.
Caution!
Danger of fire from hot ash!
Allow the system to cool down enough to avoid a fire when using a
vacuum cleaner.
Turn the heating system off before carrying out the tasks described
below.
✎ See chapter “6 Using the heating system”, section “6.3 Switching
the heating system off”.
Only turn the heating system back on again after carrying out the
tasks described below.
✎ See chapter “6 Using the heating system”, section “6.2 Switching
the heating system on”.
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