10.3.4 Burner; Insulation - Baxi EcoBlue Plus Combi 28 Installation And Service Manual

10 Maintenance
Burner
Gasket
Extension Piece
(note orientation)
Gasket
Air/Gas
Collector
Control Box
removed for clarity
Seal
Air/Gas
Collector
Spark
Ignition
Electrode
Flame
Electrode
Sensing
Leads
Electrode
56 EcoBlue Plus Combi
Cover
Burner
Air Box
Fig. 52
Heat
Exchanger
Rear

Insulation

Cover
Insulation
Air Box
Fig. 53

10.3.4 Burner

1. Undo the securing screw and remove the airbox, disengaging
it from the fan venturi. Remove the clip securing the gas feed
pipe to the air/gas venturi and disconnect the fan electrical plugs.
2. Undo the screws securing the air/gas collector to the
extension piece. Note its orientation and remove the extension
piece (where fitted) from the cover.
3. Undo the screws securing the burner. Withdraw the burner
from the cover and replace with the new one.
4. Examine the gasket(s), replacing if necessary.
Note that the gaskets are not the same !
5. After changing the burner check the combustion.
10.3.5 Insulation (Fig. 53)
1. Undo the securing screw and remove the airbox, disengaging
it from the fan venturi. Remove the clip securing the gas feed
pipe to the air/gas venturi and disconnect the fan electrical plugs.
2. Remove the electrodes as described in section 13.1.
3. Undo the nuts holding the cover to the heat exchanger. Draw
the air/gas collector, fan and cover assembly away.
4. Remove the cover insulation piece.
5. Fit the new insulation carefully over the burner and align it with
the slots for the electrodes.
6. If the rear insulation requires replacement, remove it and all
debris from the heat exchanger. Also it may be necessary to
separately remove the spring clip from the pin in the centre of
the heat exchanger and the 'L' shaped clips embedded in the
insulation.
7. Do not remove the shrink-wrapped coating from the
replacement rear insulation. Keep the insulation vertical and
press firmly into position.
8. Examine the cover seal and replace if necessary. Reassemble
in reverse order.
7219706 - 01 (04/15)