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User Manual
Singular Combi Boiler - BTC 439003302 A (2021/03)
4.2 Cleaning the Cold Water Inlet Filter
To clean the cold water inlet fi lter:
1. Drain the boiler. Refer to "
Draining the Boiler
" on page 12.
2. Remove the cold water inlet fi lter from the boiler.
Figure 27
3. Rinse the cold water inlet fi lter with clean running water.
4. Reinsert the cold water inlet fi lter.
5. Refi ll the boiler. Refer to "
Draining the Boiler
" on page 12.
4.3 Cleaning the Air Intake Filter
To maintain the boiler properly, clean the air intake fi lter every 2–3 months. If the
air intake fi lter is clogged by dust or lint, the boiler will cease to operate or error can
occur.
To clean the air intake fi lter:
1. Press the button to turn off the boiler.
2. Disconnect the power supply to the boiler.
3. Remove the boiler front cover by loosening the 2 Phillips screws securing it
to the case.
Figure 28
1
1
2
2
4. Remove the air intake fi lter located under the air intake connector.
Figure 29
Air intake lter
5. Rinse the air intake fi lter with clean running water.
6. Dry the air intake fi lter completely.
7. Reinsert the air intake fi lter and replace the front cover.
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