22
221954D
Instruct and demonstrate the safe and efficient operation of the
boiler, heating system and domestic hot water system.
Advise the user, that to ensure the continued efficient and safe
operation of the boiler it is recommended that it is checked and
serviced at regular intervals. The frequency of servicing will
depend upon the particular installation and usage, but in general
once a year should be enough.
Draw attention, if applicable, to the current issue of the Gas
Safety (Installation and Use) Regulations, Section 35, which
imposes a duty of care on all persons who let out any property
containing a gas appliance in the UK.
It is the Law that servicing is carried out by a
competent
person.
Advise the user of the precautions necessary to prevent damage
to the system and the building in the event of the heating system
being out of use during frost and freezing conditions.
Reminder - Leave these instructions and the “Benchmark”
logbook with the user.
Diagram 10.1
SECURING NUT AND
SHAKEPROOF
WASHER
PILOT PIPE
UNION
CONNECTOR
ELECTRODE AND
LEAD ASSEMBLY
4094
10 Servicing
9 Instructions to the User
REMEMBER:
When replacing a part on this appliance, use
only spare parts that you can be assured conform to the safety
and performance specification that we require. Do not use
reconditioned or copy parts that have not been clearly authorised
by Glow-worm.
NOTES:
To ensure the continued efficient and safe operation
of the boiler it is recommended that it is checked and serviced
as necessary at regular intervals. The frequency of servicing
will depend upon the particular installation conditions and
usage, but in general once a year should be enough.
It is the Law that any servicing is carried out by a
competent
person.
Before servicing turn off the gas and isolate the electrical supply
to the boiler.
After completing a service always test for gas soundness and
carry out functional check on controls.
Unless stated otherwise all parts are replaced in the reverse
order to removal.
10.1 Access
Refer to diagram 8.6 and slide controls cover forward and off.
Remove the outer case, see diagram 8.5.
NOTE:
As an aid to servicing the air pressure switch tube
connections can be used to obtain a products of combustion
reading.
Remove the RED tube from the connection on the air pressure
switch and insert the analyser probe into the tube.
Switch on the electrical supply to operate the fan and turn on the
gas supply.
On completion of the test switch off the electrical supply and the
gas supply and reconnect the red tube to the air pressure
switch.
10.2 Cleaning Heat Exchanger and Burner
Disconnect the air pressure tubes, see diagram 5.3.
Remove the blue and red electrical connections from the fan,
see diagram 5.3.
Remove the fan taking care not to damage the gasket, see
diagram 5.3.
Remove the flue hood, see diagram 5.4.
Remove the combustion chamber cover, see diagram 8.2.
Remove the cleaning plate from the combustion chamber
cover, see diagram 8.2.
Disconnect the pilot pipe union connector and pilot burner,
securing nut and shakeproof washer together with the pilot
shield. Remove the pilot burner assembly taking care not to
damage the electrode and lead assembly, see diagram 10.1.
Remove the securing screw from the burner support bracket,
see diagram 10.2.
Remove the main burner from the main injector at the rear.
Raise the burner up and forward, easing the pilot pipe down, to
clear, take care not to damage the combustion chamber insulation
or the pilot pipe.
Use a vacuum cleaner or suitable stiff brush to clean the burner
thoroughly, making sure that all the burner ports are clear and
unobstructed.
Place a sheet of paper in the base of the combustion chamber.