Bosch ZBR16-3A Installation And Service Instructions Manual page 85

B With the cleaning blade, clean the heat exchanger block
from the bottom to the top.
Fig. 87 Cleaning the heat exchanger with the cleaning blade
B Clean the heat exchanger block with the brush from top
to bottom.
Fig. 88 Cleaning the heat exchanger with the cleaning
brush
B Remove burner ( Chapter 14.1.5 "Burner servicing").
Copyright (optional information)
B Rinse the heat exchanger with water from the top.
Fig. 89 Rinsing the heat exchanger
B Clean the condensate tray (with reversed brush).
6 720 641 933-71.1O
Fig. 90 Cleaning the condensate tray
B Rinse the heat exchanger with water from the top.
B Clean the condensate trap connection.
B Close the inspection opening again using a new gasket
and tighten the screws with approx. 3.69 ft.-lbf. (5 Nm).
6 720 612 563-14.1O
Inspection and maintenance | 85
6 720 612 664-18.1R
6 720 610 332-75.2R
6 720 643 068 (2011/06)