• Open the boiler door.
• Pull out the turbulators (only for CNK-40/
FNK-40 and CNK-63/FNK-63).
• Pull out the hot combustion chamber.
• Remove soot/sulphur deposits with the
cleaning brush supplied.
• Assemble in reverse order.
Turbulators
Hot combustion chamber
Cleaning using the cleaning brush
Maintenance
Turbulator
2 9