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Inspections and maintenance
Boiler body maintenance
Danger!
Before performing any maintenance, make
sure the boiler and its components have co-
oled off.
Disconnect the boiler from the electric mains
and shut the gas supply to the appliance.
Attention!
Before cleaning the boiler body, protect the
panel board against any water sprays.
Once a year, at the end of the heating season, the boiler must
receive a general cleaning.
Before performing any maintenance, make sure that all the pre-
cautions referred to in the previous point have been taken.
To proceed with maintenance you must:
- disconnect power by acting on the main switch;
- remove the burner, which could be overhauled at the same
time;
- open the furnace door to access the combustion chamber;
- remove the smoke chamber access door;
- make sure the internal parts are intact.
Checking status of gaskets and insulation fibres
The insulation fibre of the door can show
cracks after a short time of operation; this howe-
ver does not reduce its insulation capacity nor
jeopardise its lifespan.
Check the status of the seal gasket which must
not show signs of deterioration; if so, it must be
replaced, using only original spare parts.
Check the status of the smoke chamber ins-
pection cover gasket.
Replace it if worn, using only original spare
parts.
Components to check during yearly inspection
COMPONENT:
Ts (safety thermostat)
System expansion vessel
Door gaskets
Smoke chamber gaskets
Ignition electrode
Detection electrode
Burner
VERIFY:
Does the thermostat place the boiler in
safety when overheating?
Does the vessel contain the right amount
of air?
Does smoke seep through the door
gaskets?
Does smoke seep through the smoke
chamber gaskets?
Does ignition occur correctly?
Is the flame detection correct?
Is the burner still in optimal operating con-
ditions?
CONTROL/INTERVENTION MEASURE:
Bring the boiler to operating temperature
with the pumps stopped.
Check pressure.
Pressurise the boiler (open the pump ble-
eder). Open the heating circuit closing val-
ves.
Further tighten the door screws.
Replace the sealing gasket and possibly the
internal gasket of the door.
Further tighten the smoke chamber nuts.
Replace the sealing gaskets.
Make sure that the distance between
electrode and burner is 9-10 mm.
Make sure that the distance between the
electrode tips are 3 mm.
Check the discharge with closed gas.
Make sure that the distance between
electrode and burner is 15-18 mm.
Check ignition and detection with cold sy-
stem.
Visual check the fibre; if dirty, clean using
water jet from inside out
