Supplied By www.heating spares.co Tel. 0161 620 6677
34
221504A
Diagram 14.9
HEAT EXCHANGER
Diagram 14.8INSULATION
14 Replacement of Parts
SIDE INSULATION
PANELS
REAR INSULATION
PANEL
INSULATION
SECURING
SCREW
DRAIN
PLUG
LOCATING
LUG
UNION
FLOW
SECURING SCREW (2)
RETAINING PLATE
3343
COMBUSTION
CHAMBER
FRONT COVER
3341
14.12 Fan: Diagram 7.2
Gain access as described in the servicing section for “Heat
Exchanger Cleaning”.
Fit new fan.
14.13 Main Burner
Gain access as described in Servicing to remove and replace
the burner.
14.14 Main Burner Injector
Gain access as described in the Servicing Section and replace
the burner.
14.15 Insulation: Diagram 14.8
Remove the inner case, see diagram 7.1.
Remove the combustion chamber front panel, see diagram 7.2.
Remove the screw securing the front insulation and slide out.
The side insulation panels can be removed by sliding them
forward.
Note: To remove the rear insulation panel it is first necessary
to remove the burner, refer to Servicing Section “Heat Exchanger
Cleaning”.
Pull the rear insulation panel forward off the retaining angle at
the bottom, allow the panel to drop, then slide the top of the
panel forward.
14.16 Heat Exchanger: Diagram 14.9
Gain access as described in the servicing section for “Heat
Exchanger Cleaning”.
Drain the boiler circuit of water.
A drain point is provided for the draining of residual water from
the heat exchanger.
Remove the retaining clip and thermostat phials as previously
described in this section.
Disconnect the flow and return unions.
Remove the heat exchanger retaining plate, see diagram 14.9.
The heat exchanger can now be removed, on replacement use
the new sealing washers provided and ensure the lugs on the
combustion chamber locate into the cutouts on the heat
exchanger.
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