Burner Servicing; Heat Exchanger Block Inspection And Cleaning - Bosch ZBR16-3A Series Installation And Service Instructions Manual

15.1.5 Burner servicing

DANGER: Fire danger!
▶ Only operate the burner while installed in a boiler.
▶ Remove burner lid (steps 1 - 4).
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Fig. 92 Removing the burner cover
▶ Remove burner and clean its components.
Fig. 93 Burner
▶ Reinstall burner in reverse order, including a new gasket if necessary.
▶ Adjust the gas-air ratio ( page 66).
Greenstar
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6 720 641 933-95.1o
7 181 465 330-08.2R

15.1.6 Heat exchanger block inspection and cleaning

NOTICE: Damage to the coating of the heat exchanger.
▶ Cleaning of the heat exchanger should not be
necessary until five years after the initial
commissioning.
▶ Only use a Bosch cleaning blade and Bosch cleaning
brush ( page 98).
▶ Only clean heat exchanger in case if soiling is clearly
visible.
▶ Remove the inspection cover ( page 10) and any sheet metal insert
below, if installed.
▶ Determine degree of soiling of the heat exchanger through visual
inspection.
If mechanical cleaning is required:
For cleaning the heat exchanger, use Bosch main heat exchanger
gaskets, the heat exchanger brush and the heat exchanger cleaning
blade which are available as spare parts.
▶ Remove the condensate trap (steps 1 and 2) and place a suitable
container underneath.
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Fig. 94 Removing the condensate trap
Inspection and maintenance | 71
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6 720 641 933-93.1o
6 720 806 992 (2015/03)