A.O. Smith Cyclone BFC-28, Installation, User And Service Manual

Page: 92 / 104

Performing maintenance
90 Instruction manual BFC
15
s
15.4.3 Clean heat exchanger
1. Detach the burner.
2. Clean the combustion chamber of the heat exchanger using a vacuum
cleaner and a soft brush.
3. Detach the chimney flue.
4. Clean the end of the heat exchanger using tap water.
5. Fit the burner.
6. Fit the chimney flue.
Note
Check the pressure differential again after cleaning. If the pressure
differential is too low following cleaning, please contact the supplier of the water
heater.
15.5 Finalizing
maintenance
See Eratta.
1. Fill the water heater (5 "Filling").
2. Start the water heater (9 "Starting the water heater")
3. Check the CO
2
value (3.11.3 "CO
2
adjustment").
4. Check the switching pressure of the pressure switch. (3.11.4 "Switching
pressure measurement")
5. Erase the message
SERVICE REQUIRED
. Do this by pressing once on
then once on .