Instructions To The User; Servicing - Saunier Duval Xeon 80ff Instructions For Use Installation And Servicing

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.
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
carryout functional check on controls.
Unless stated otherwise all parts are replaced in the reverse
order to removal.
8.1 Access
Refer to diagram 6.6 and slide the controls cover forwards and
off.
Remove the outer case, see diagram 6.5.
Note. As an aid to servicing the air pressure switch tube
connection 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 t he tube.
Switch on the electrical supply to operate the fan and turn the
gas supply on.
On completion of the test switch off the electrical supply and the
gas supply and reconnect the red tube to the air pressure
switch.
8.2 Cleaning Heat Exchanger Flueways
Disconnect the air pressure tubes, see diagram 5.4.
Remove the violet and red electrical connections from the fan,
see diagram 5.4.
Remove the fan complete with fan duct extension taking care
not to damage the gasket, see diagram 5.4.
Vertical Flue Only, carefully remove the restrictor plate and
additional gaskets.
Remove the flue hood, noting that there are keyhole slots at the
rear, see diagram 8.1.
Remove the combustion chamber cover, see diagram 6.3.
Remove the burner as Section 8.3.
Place a sheet of paper in the base of the combustion chamber.
Remove the baffles, note, when replacing they are marked
"Front", see diagram 8.2.
221972A

7 Instructions to the User

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 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.

8 Servicing

Clean the heat exchanger flueways with a suitable stiff brush.
Remove the paper together with any debris.
8.3 Main Burner
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 8.3.
24
SECURING
SCREW (4)
FLUEHOOD
GASKET
Diagram 8.1
BAFFLE (8 off)
Diagram 8.2