Operating manual Fireplac inserts schieb flat + II
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16 | Help
103
• Is the firebox door correctly closed?
• Is the chimney draft too high?
... the ceramic panes become sooty very quickly?
• A gradual accumulation of soot by the windows after 8 to 10 hours of fires is normal.
• Was dry unrefined wood used?
• Has the fireplace insert been brought to operating temperature?