eta eHACK 20-50 kW, Service Manual

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Cleaning (customer) Cleaning and maintenance
2.5.5 Clean flue gas duct
Remove the panel on the top
Remove the panel on the top of the boiler.
Fig. 2-25: Panel
Removing the maintenance cover
Remove the insulation over the maintenance cover.
Fig. 2-26: Insulation
Remove the maintenance cover.
Fig. 2-27: Maintenance cover
Clean inner walls of the flue gas duct (only applies
to boilers without precipitator)
Clean the inner walls of the flue gas duct with the
cleaning brush.
Fig. 2-28: Flue duct
Check seal on the maintenance cover
Inspect the seal of the maintenance cover to ensure it
is in good working order, replace if necessary.
Fig. 2-29: Seal
CAUTION!
Avoid operation with damaged seals
Never operate the boiler with damaged seals.
Otherwise, leak air is sucked in, disturbing the
combustion process and causing increased wear.

Always replace seals as soon as they are
damaged.