11
!
Please note
Draining the boiler with a suction pump will cre-
ate negative pressure inside the boiler.
Only drain the boiler with a suction pump when
the air vent valve is open.
Opening the boiler door and cleaning cover
Note
On gas burners, disconnect the gas supply pipe.
Fig. 2
Cleaning the turbulators, heating surface, flue outlet and flue pipe
Fig. 3
Commissioning, inspection, maintenance
Shutting down the system (cont.)
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