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© Baxi Heating UK Ltd 2016
Fig. 57
Fig. 58
Control Box removed
for clarity
13.0 Changing Components
13.11
Pump - Complete (Figs. 57 & 58)
1. Drain the boiler primary circuit and disconnect the
electrical plug from the pump motor.
2. Undo the two screws securing the body to the pipe and
manifold and draw the pump forwards.
3. Examine the ‘O’ ring seals on the return pipe and
manifold, replacing if necessary.
4. Reassemble in reverse order.
13.12
Automatic Air Vent - Grundfos (Fig. 57)
1. Drain the boiler primary circuit and unscrew the
automatic air vent from the pump body.
2. Examine the ‘O’ ring seal, replacing if necessary, and fit it
to the new automatic air vent.
3. Reassemble in reverse order.
13.13
Automatic Air Vent - Wilo (Fig. 58)
1. Drain the boiler primary circuit and remove the ‘U’ clip
securing the automatic air vent to the pump body.
2. Pull the vent upwards away from the body.
3. Examine the ‘O’ ring seal, replacing if necessary, and fit it
to the new automatic air vent.
4. Reassemble in reverse order.
‘U’ Clip
Automatic Air
Vent
Automatic Air
Vent
Grundfos Pump
Wilo Pump
