Inspection And Servicing - Main MULTIPOINT FF User Operating, Installation And Servicing Instructions

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15. Inspection and Servicing

Warning
Isolate electrical supply before servicing the appliance.
For reasons of safety and economy it is recommend that
the appliance is serviced annually. The servicing must be
carried out by a competent person.
Before commencing any service operation turn off the gas
supply at the main gas isolation valve. Ensure that the
appliance is cool.
ACCESS FOR SERVICING
Pull of the fascia and undo the two fixing screws.
Lift the outer case clear.
15. 1 Heat Exchanger
Undo the two retaining screws and remove the holding
bracket.
Inspect and if necessary clean the heat exchanger
flueways.
Fig. 24
15.2 Main Burner
Disconnect the wire connections to the ignition and
sensing electrodes.
Undo the union connection below the burner.
Remove and retain the fibre washer.
Lift and rotate the front edge of the burner backward
through 180 degrees. With the burner oriented
horizontally and upside down, withdraw forward beneath
the combustion chamber skirt. (fig. 23).
Inspect and clean the injectors if necessary.
Inspect and clean the main burner bars if necessary.
15.3 Water filter
Close the water inlet isolation valve.
Open a hot water tap, open the drain screw and drain
the appliance.
Dismantle the cold water inlet pipe.
Clean the water filter/regulator.
15.4 Re-assembling the Appliance
Re-assemble the appliance in reverse order ensuring the
following:
The washer in the main gas line union is correctly located.
The seals around the ignition leads and cable entries
are correctly seated in the combustion chamber base.
Turn on the gas supply at the main gas isolation valve
and check for gas soundness BS 6891 while the
appliance is running.
Re-commission the appliance as detailed in Section 13.
Fig. 25
6 720 607 160