Bosch CONDENS 5000W - Auto Air Vent; Pump Head; Drain Tap

Servicing and spares
51
Bosch Condens 5000W – 6 720 646 195 (2018/10)
6.8.18 Auto air vent
Removal of the syphon assembly will give access to the auto air vent.
Refer to section 6.8.15.
▶ Ensure the boiler has been fully drained.
▶ Use a screwdriver or similar to rotate the air vent anticlockwise, as
shown below.
Fig. 107 Unlock auto air vent
1. Lift the air vent [1] out of the housing and remove.
Fig. 108 Auto air vent removal
NOTICE:
Before fitting replacement auto air vent
▶ The “O” ring must be fitted to the Auto air vent and not the hydraulic
block otherwise the auto air vent will be difficult to fit.
▶ Apply silicone lubricant to the “O” ring to ease assembly.
▶ To refit, follow the above in reverse order.
6.8.19 Pump head
▶ Ensure the boiler is fully drained.
▶ Disconnect the electrical connection from the bottom of the pump.
NOTICE:
Water damage
▶ Protect the control unit from water ingress when removing the pump
head.
Refer to figure 109.
1. Remove the four Allen bolts securing the pump at each corner.
2. Gently pull the pump towards you and remove.
Fig. 109 Pump head removal
▶ To refit, follow the above in reverse.
6.8.20 Drain tap
▶ Ensure the boiler is fully drained.
Refer to figure 110.
1. Rotate the drain tap fully anticlockwise.
2. Withdraw the drain tap from its housing
Fig. 110 Drain tap removal
▶ To refit, follow the above in reverse. Ensure any seals that have been
disturbed are renewed.
6720643895-85.1Wo
6720644743-30.1Wo
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6720643895-88.1Wo
6720644743-33.1Wo
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