Bosch Singular 5200 - Page 64

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Service Manual
Singular Combi Boiler - BTC 439002301 A (12.2021)
14. Remove phillips screws on upper and lower heat exchanger bracket located
on right and left side of the heat exchanger (Fig.129).
Figure 128
15. Remove heat exchanger/fan from boiler.
16. Install replacement heat exchanger in reverse order.