Honeywell Central Heating Cooker Natural Gas - Manual (Page 31)

31
SERVICING
To maintain the appliances high thermal efficiency and
reliable operation, it must be serviced annually which is also a
requirement of the appliances guarantee. If the boiler is used
to provide central heating and hot water, we recommend
that the appliances annual service is carried out just before
the start of the heating season.
NOTE: THE PERSON(S) WHO SERVICES OR CARRIES OUT ANY
REMEDIAL WORK, IE ELECTRICAL FAULT FINDING, MUST
BE CORGI APPROVED.
IMPORTANT: ISOLATE ELECTRICAL SUPPLY TO THE
APPLIANCE BEFORE CARRYING OUT ANY WORK
1.1 Replacement of parts must only be carried out by a
competent person e.g. a CORGI registered engineer.
1.2 Before commencing the replacement of any components:
ISOLATE THE ELECTRICITY SUPPLY TO THE APPLIANCE
ISOLATE THE GAS SUPPLY TO THE APPLIANCE BY
TURNING OFF AT THE GAS SERVICE VALVE (ACCESSIBLE
BY REMOVING THE LOWER PANEL BEHIND THE LOWER
LH DOOR)
1.3 Remove the two lower pozi screws and star lock washers and
remove the two screws at top of this panel only (there is no
need to remove the smaller top panel which contains the
Blocked flue device)
2.1 Remove the lower panel as detailed previously.
2.2 Disconnect the burner 6 way plug from the lower support
bracket and disconnect the ignition lead and ionisation lead
from the control box.
2.3 The boiler burner is connected to the solid supply pipe, undo
the connection and retain the sealing washer, replace if
necessary. (Fig. 1)
2.4 Undo the two flange nuts (13mm) on either side of the burner
mounting flange and withdraw burner from combustion
chamber. Check condition of gasket and replace if
necessary.
2.5 Remove the ignition control box by unscrewing the single
retaining screw and fit to the new burner assembly refit both
ignition & ionisation probe leads. (Fig. 2)
2.6 Fit the new burner ensuring it is the direct replacement and
reassemble in reverse order
1. REPLACEMENT OF PARTS
2. BOILER BURNER REMOVAL
BOILER
FLEXIBLE
COOKER
FLEXIBLE
3 - 4
mm
11.5 mm
3 - 4mm
11.5 mm