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10. Maintenance
Any interventions are only allowed to be done by contracting service organization that was trained
by the manufacturer.
1. Disconnect the boiler from the electricity network.
2. Close the gas inlet to the boiler.
3. Disconnect the burner from the gas inlet (disconnect the flange from Honeywell electromagnetic valves
or the gas Dungs multiblock and disconnect the screwing on the valve for gas inlet to the pilot burner).
4. Disconnect the conductors to the electromagnetic valves and pilot burner electrodes.
5. Dismount the burner plate from the boiler drum.
6. Push the burner out of the combustion space.
7. Remove the upper part of the shell and the thermal insulation.
8. Unscrew the draught diverter cover.
9. Once a year clean mechanically the boiler convection surfaces - by using a cleaning brush. After the
cleaning by using the cleaning brush the effect can be reinforced by using a chemical agent like
METANO THERM
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spray the convection surfaces by using the agent applied from the upper part of boiler drum.
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mount the cover, draught diverters and the upper cover of the boiler shell.
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put the boiler into operation
During the boiler operation the agent reacts with the deposits and in form of combustion gases it taken
away through the chimney.
10. In case that the regular maintenance wasn’t done and the convection surfaces are strongly clogged with
dirt they might be cleaned in following way:
-
the convection surface vents are cleaned mechanically by using the cleaning brush
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pour a diluted detergent into all vents from above
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let react for about 10 minutes
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spray the convection surfaces by using a lower pressure
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then again apply a higher pressure to the convection surfaces
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remove perfectly the dirt from the burner space
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mount the burner, connect the gas connection, attach the connectors to the valves
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mount the draught diverter cover
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put on the upper boiler shell
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during the operation check the gas inlet tightness
11. Check the burner tubes clogging. In case that they are dirty:
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by means of a brush and at the same time with vacuum cleaner running remove the dirt deposited in
tubes perforation
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it is forbidden to use a steel brush for burner tubes cleaning, because the tubes surface is
treated by a reflective protective paint.
