Bosch CONDENS 5000W - Syphon Removal; Diverter Valve Motor (if Option Integral Diverter Valve Fitted); Diverter Valve; Fitted)

Servicing and spares
Bosch Condens 5000W – 6 720 646 195 (2018/10)
50
▶ Support the control panel and unclip the support cable [1] from the
boiler frame.
▶ Remove the support cable and fit to the new control.
▶ Remove appropriate cable restraints from the new control panel.
Fig. 104 Release support cable
▶ Fit control to the boiler.
▶ Re-connect support cable (1) to the boiler and all electrical
connections and system to the new control.
▶ Ensure that the code plug is re-fitted to the new control. If this is not
done, the boiler will indicate an error and will not function.
▶ Replace the fascia to the new control and secure the system pressure
gauge back in the fascia.
NOTICE:
Control panel replaced
▶ After re-assembly, check the CO/CO
2
levels as described in section
6.6 "Setting the air/gas ratio".
6.8.15 Syphon removal
Releasing the syphon from the sump, refer to figure 105.
1. Disconnect the discharge hose at the plumbing manifold.
2. Using a screwdriver, disengage the retaining clip on top of the
syphon.
3. Pull the syphon towards you and remove the complete assembly.
Fig. 105 Syphon removal
6.8.16 Diverter valve motor (if option integral diverter valve
fitted)
▶ Temporarily connect the electrical power to the boiler.
▶ Enter the service mode to ensure that the diverter valve is in the mid
position (there is no need to drain the boiler).
▶ Electrically isolate the boiler.
▶ Remove diverter valve cover, if fitted.
▶ Disconnect the electrical connector from the diverter valve motor.
Refer to figure 106.
1. Pull the motor assembly towards you.
The assembly will slide free from the valve.
▶ Slide the body into the housing to fit the new diverter valve motor.
– Ensure that “H” section of the motor actuator is fitted correctly
into valve body.
▶ Re-connect the electrical connection.
▶ Re-fit the protective cover (if available).
Fig. 106 Diverter valve and motor
6.8.17 Diverter valve (if option integral diverter valve fitted)
▶ Ensure the boiler has been fully drained.
▶ Disconnect the electrical connector from the diverter valve motor.
▶ Remove the diverter valve cover, if fitted.
Refer to figure 106.
2. Undo the two screws holding the valve to the plastic housing.
3. Withdraw the valve and clean the valve chamber if necessary.
▶ To refit, follow the above in reverse.
▶ Ensure any seals that have been disturbed are renewed.
6720644743-27.1Wo
1
6720644743-28.1Wo
3.
1.
2.
1.
2.
3.
6720644743-29.1Wo