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4000124050-2
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Diagram 18.3
SENSING
TUBE
AIR PRESSURE
SWITCH
18.2 Fan.
Before starting refer to the front of
Section 18 Important
information.
• Remove the front panel
, refer to Section 15.3.
•
Remove the sealed chamber cover
, refer to Section 15.5.
• Remove the fan,
refer to Section 15.10.
18.3 Air pressure switch
Before starting refer to the front of
Section 18 Important
information.
• Remove the front panel
, refer to Section 15.3.
•
Remove the sealed chamber cover
, refer to Section 15.5.
• Locate air pressure switch situated at the top right hand side,
see diagram 18.3
.
• Remove air pressure switch tube.
Note:
Do not fit tube until the air pressure switch is in position.
• Disconnect air pressure switch electrical connections.
• Unclip to remove air pressure switch.
18.4 (F24E Only) Domestic water inlet filter
If the water flow rate through the appliance has reduced it may
be necessary to clean or replace the water inlet filter,
refer to
section 15.12
.
Before starting refer to the front of
Section 18 Important
information.
• Remove the front panel
, refer to Section 15.3.
• Lower the control panel
, refer to Section 15.4.
• Clean or replace the water inlet filter,
refer to Section 15.12.
18.5 Central Heating Filter
It may be necessary to clean or replace the central heating filter.
Before starting refer to the front of
Section 18 Important
information.
• Isolate flow and return valves
(a)
and
(c)
.
• Clean or replace the central heating filter,
refer to Section
15.13.
18.6 ( F24E Only) Cold water inlet restrictor
Before starting refer to the front of
Section 18 Important
information.
• Remove the front panel
, refer to Section 15.3.
• Lower the control panel
, refer to Section 15.4.
• Isolate cold water inlet valve
(b)
.
Drain down domestic hot water circuit of boiler only,
refer to
relevant part of diagram 18.1
.
• Undo union nuts from boiler cold water in isolating valve.
• Clean and inspect restrictor, replace if necessary,
see diagram
18.4
.
18.7 Burner, refer to Section 15.9.
Before starting refer to the front of
Section 18 Important
information.
• Remove the front panel
, refer to Section 15.3.
18 Replacement of Parts
ELECTRICAL
CONNECTORS
RETAINING
CLIPS
• Lower the control panel
, refer to Section 15.4.
•
Remove the sealed chamber cover
, refer to Section 15.5.
•
Remove the combustion chamber cover
, refer to Section
15.7.
• Remove burner from boiler,
refer to Section 15.9.
18.8 Burner injectors, refer to diagram 18.5.
Before starting refer to the front of
Section 18 Important
information.
• Remove the front panel
, refer to Section 15.3.
• Lower the control panel
, refer to Section 15.4.
•
Remove the sealed chamber cover
, refer to Section 15.5.
•
Remove the combustion chamber cover
, refer to Section
15.7.
• Remove burner from boiler,
refer to Section 15.9.
• Remove and replace injectors as required.
Note: The injectors may be cleaned, remove injectors inspect
and clean.
Do not use a wire or sharp implement.
Note: Make sure that injector size, marked on each injector, is
the same as that given in ‘
Section 1 Technical Data
’ for the
type of gas being used.
Diagram 18.4
COLD WATER INLET
RESTRICTOR
COLD WATER IN
ISOLATING VALVE
F24E Only
