Supplied By www.heating spares.co Tel. 0161 620 6677
16
221045A
4 R e p l a c e m e n t o f P a r t s
Diagram 4.1
Before replacing any part please read points below:-
Replacement of parts must only be carried out by a
competent person.
Unless stated otherwise all parts are refitted in the
reverse order to removal.
1. Refer to Section 1.1.
2. Always isolate the boiler from the electrical and as
required the gas supply as Section 1.3.
3. Unless stated otherwise, gain access as appropriate
parts of Sections 1.4 and 1.5.
4. On completion, make good any water loss and
pressurise the system to initial design pressure, refer to
“Commissioning” in the Installation Instructions.
If the red light “flashes”, momentarily interrupt the
electrical supply.
4.1 Fan
Refer to the appropriate parts of Section 2.2.
After fan has been fitted, check the burner pressure and
if necessary adjust.
4.2 Main Burner
Refer to the appropriate parts of Section 2.2.
Note. There is no need to remove the fan or flue
collector assemblies.
4.3 Main Injector
Refer to the appropriate parts of Section 2.2.
Note. There is no need to remove the fan or the flue
collector assemblies.
4.4 Pilot Burner/Injector
Refer to the appropriate parts of Section 2.2
Note. There is no need to remove the fan or flue
collector assemblies.
4.5 Spark Electrode/Ignition Lead
Refer to the appropriate parts of Section 2.2.
Note. There is no need to remove the fan or flue
collector assemblies.
Remove the controls housing assembly and support, see
diagram 4.1.
If this is not possible place on a surface, making sure that
the control knob is protected.
Remove the spark electrode/ignition lead from the pilot
burner assembly, see diagram 2.4.
Disconnect the ignition lead from the piezo unit, refer to
Section 4.11.
CONTROL
HOUSING
SECURING
SCREW (2)
SUPPORT
BRACKET
CLOCK/TIMER
(if fitted)
FAN DRIVER
CONTROL
HOUSING)
BOTTOM CONTROL
HOUSING COVER
TOP CONTROL
HOUSING COVER
CLOCK/TIMER
(if fitted)
SCREW(2)
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