Inspection and maintenance
The operator is responsible for the safety and environmental compatibility of the heating system (see local regulations).
It is therefore recommended to sign a maintenance and inspection contract with a trained and certified heating contractor that provides annual inspection and maintenance. This ensures high efficiency and environmentally compatible combustion.
Cleaning the outside of the boiler and the control unit
Wipe down with a damp cloth. Do not use any abrasive or corrosive cleaning agents.
Source: Bosch (www.bosch-climate.us)