Bosch 15SBI Service Manual download pdf (Page 26)

15.4.9 Control Board

Remove the facia bottom panel and carefully disconnect all the

electrical connections. Refer to Fig. 11 and 12.

Lower the facia panel and remove the splash cover. Refer to

Section 14.3.

Disconnect the earth connection at the appliance. Refer to Fig. 33.

Remove the rear connection cover, unplug the connections and

release the cable clamps.

Unscrew the four screws to remove the metal cover. Refer to Fig. 48.

Lift out the control board.

15.4.10 Clock

Remove the cabinet front panel and lower the facia panel.

Remove the splash cover and the rear connection cover.

Disconnect the clock/programmer. Refer to Fig. 34

15.4.11 Heat Exchanger

Drain the appliance as described in Section 15.3 preceding.

Remove the combustion chamber, fan and flue hood as

described in Section 14.3, Inspection and Servicing.

Remove the temperature sensors as described in 15.4.15, 16, 17.

Refer to Fig.49.

Remove the auto-air vent and connecting pipe.

Release the connections and remove the heat exchanger

15.4.12 Pump

Remove the cabinet front panel and lower the facia panel.

Drain the appliance as described in Section 15.3 preceding.

Release the water connections and remove the pump. Refer to

Fig.50.

Disconnect and transfer the electrical connections to the new

pump. Set the pump speed to that of the replaced pump. Do not

forget to fit the gaskets at the connections.

Alternatively replace the pump head only by unscrewing the

four Allen screws.

Fig.48. Rear Control Board Cover.

1. Control Board Cover Fixing Screws (4)

2. Rear Connections Cover Fixing Screws (2)

3. Rear Connections Cover

4. Control Board Cover

5. Facia

6. Pressure gauge

7. clock clips

Fig.49 . Heat exchanger (24SBi)

1. Auto Air Vent

2. Inner Casing Seal

3. Auto Air Vent Assembly Clip

4. Gas to Water Heat Exchanger

5. Flow Sensor Clip

6. Primary flow Sensor

7. Heat Exchanger Support

Bracket

8. Overheat Thermostat

9. Overheat Thermostat

Fixing Screws

Fig.50 . Circulating pump

Expansion vessel

Unscrew union fittings

Allen screws (4)

remove if changing

pump head only

Pump head

Pump

Electrical

connection

cover

Unscrew union

fitting

1 2 ... 21 22 23 24 25 26 27 28 29 30 31 ... 36 37

Comments to this Manuals

No comments

Bosch 15SBI Service Manual Page 26

Comments to this Manuals

Related products and manuals for Water heaters & boilers Bosch 15SBI