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ture goes above 40°C before starting the pumps, the cir-
culation pump and the burner should operate contem-
poraneously.
− Start the burner (carrying out the commands described in
the burner's instruction manual).
− Set the temperature of the boiler between 30 and 90° C. If
the burner is a two-stage burner, adjust the temperature
of the second stage to 5-10°C less than that of the first
stage. This will make the second stage light come on.
− If the burner does not start, follow the instructions in the
burner's manual. If it is not possible to start the burn-
er after following the manual's instructions, contact the
burner's technical assistance centre.
Switching off the boiler
− Switch off the burner (carrying out the commands de-
scribed in the burner's instruction manual).
− Set the "ON/OFF" switch on the control panel to "OFF".
− Switch off the circulation pump
− Close all the fuel valves.
− Switch off the electrical supply using the master switch in
the boiler room.
First checks in the event of a fault
When the burner or a boiler has a fault, check the following be-
fore calling for assistance. Do not carry out any other interven-
tion except for the controls indicated. After carrying out these
checks, contact the technical assistance service.
− Check that the fuel is being correctly supplied to the
burner. If necessary, restore the fuel supply to the burner.
− Check that the pump is working. If the pump stops it could
cause overheating. Contact the pump's manufacturer or
distributor. If the boiler stops and does not restart, the
stop could have been caused by the safety thermostat
due to the overheating of the water in the boiler. In this
case, wait for the boiler to cool down and carry out the
following checks.
− Check the position of the valves. If the valves are closed,
open them.
− Press the switch of the safety thermostat when the boiler
has cooled down sufficiently, the burner should restart.
− If the burner does not start, or if the safety thermostat
stops the boiler again, contact the technical assistance
service.
− If the warning light of the burner is on, consult the burn-
er's instruction manual or contact the appliance's man-
ufacturer or dealer.
1.22 Maintenance instructions
The boiler and burner checks are carried out: daily (daily use),
periodic and annually.
Daily checks
The user should carry out these checks daily in the season when
the boiler is used every day. Read and follow the instructions
for the daily checks in the chapter "Preliminary checks" in the
manual.
Periodic checks
− To perform efficiently, to prevent faults and to prolong the
boiler's life, it is important to carry out routine checks. We
recommend these checks be carried out once every three
months. Periodic checks are carried out by the techni-
cians as follows:
− Checking and cleaning, if necessary, of the combustion
chamber and the passageways of the boiler smoke.
− Checking for water leaks going into and coming out of the
boiler and the checking the seal of the flue gases pipe
fitting.
− Checking the valves.
− Checking the pumps.
− Checking and cleaning, if necessary, the fuel filter.
− Checking the combustion (visual). Adjustments to the
burner and flame, if necessary.
− Checking and cleaning, if necessary, the liquid fuel sen-
sor.
− Checking the operation and safety of the burner and the
boiler.
Annual checks
The annual checks should be carried out by technicians before
the start of the season. The flue gases pipe and the relative pipes
need to be cleaned before requesting the intervention of tech-
nicians for the annual checks. In the annual checks, the techni-
cians assess the following:
− Conditions and sealing of the elements and the insulat-
ing cords.
− Operating pressure for adjusting the combustion with the
combustion gas measurement system, if necessary.
− Sensors and connection of the sensors.
− Boiler combustion chamber and any formations of soot
in the flue gas passages; cleaning after checking.
− Fastening and seal of the boiler door.
− Seals of the boiler fittings.
− Correct opening and closing of the valves.
− Fuel filter and eventual cleaning.
− Burner liquid sensor with cleaning or replacement.
− Operation and safety of the burner and the boiler.
1.23 Cleaning the boiler
Before carrying out this work on the boiler, switch off the electri-
cal supply with the master switch, close the fuel valves and pro-
tect the control panel and the burner so as not to damage them.
Cleaning the flue gas passages
The formation of soot on the heating surfaces can lead to an
increase in the temperature of the fumes by up to 100° above
normal, leading to a yield reduction of 5%. Remove the M16
screws and the nuts from the four hinges that connect the burn-
er door to the front and then open the door. Clean the com-
bustion chamber, extract the turbulators and the horizontal flue
gas passages (second and third passage). Clean the turbulators
and put them back in the channels. Close the door of the burner
securely. During this cleaning operation, a layer of soot could
form in the flue gas outlet zone. The soot can be removed by
separating the horizontal passages from the flue pipe. After this
operation, put back the screws and check the door seal.
The frequency of the cleaning changes depending on the type of
fuel used by the boiler and the period it is used. When cleaning
the boiler, check the ceramic fibre cords that insulate the door
from the front element and the flue gases pipe from the rear
element and replace them if necessary.
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