Baxi Potterton 30 HE manual Changing Components, Heat Exchanger Fig, Burner Fig

Pipe Connecting

Clips

Heat Exchanger

	14.0	Changing Components
14.3		Heat Exchanger (Fig. 64)
1.	Remove the fan as described in section 14.1.
2.	Drain the primary circuit. Prise the three pipe
connecting clips off the joints in the flow and return
pipes. Remove the heat exchanger return pipe.
3.	Lift the heat exchanger to disconnect the flow pipe
joint. Withdraw it from the appliance, taking care not to
damage the rear insulation piece.

Flow Pipe

Heat Exchanger

Electrodes

Electrode

Grommets

Electrode

Leads

Return Pipe

Fig. 64

Burner

Fig. 65

4.	Fit the new heat exchanger.
5.	Reassemble in reverse order of dismantling, and
repressurise the system.
14.4		Burner (Fig. 65)

1.Remove the four screws securing the combustion box door and remove the door.

2.Undo the screws securing the burner to the injector manifold. Draw the burner out of the combustion box, pulling the electrode grommets from the slots in the combustion box lower panel.

3.Disconnect the electrode leads and grommets from the electrodes. Completely remove the burner.

4.Undo the screws securing the electrodes to the burner. Examine the condition of the electrodes, replacing if necessary. Fit the electrodes to the new burner.

5.Engage the burner location brackets over the studs on the injector manifold and reassemble in reverse order.

38© Baxi Heating UK Ltd 2007