36
Inspections and maintenance performed
professionally and according to a regular
schedule as well as the use of original spare
parts are of the utmost importance for fau-
lt-free operation of the boiler and to
guarantee its long life.
Yearly maintenance of the appliance is
mandatory in compliance with Laws in force.
Failure to perform Inspections and Mainte-
nance can entail material and personal
damage.
We therefore recommend stipulating an inspection or maintenance
contract.
Inspections help to determine the actual status of the appliance
and to compare it with the nominal status. This is done through
measuring, controls and observation.
Maintenance is required to eliminate any differences between
the actual status and the nominal status. This is normally done
by cleaning, setting and replacing individual components
subject to wear.
maintenance intervals and their extent are determined by a
specialist based on the status of the appliance ascertained
through inspection.
Inspection and maintenance
instructions
To assure long-term functioning of your appliance
and to avoid altering its approved status, only
original unical spare parts must be used.
Before proceeding with maintenance, always perform the
following operations:
• Disconnect the electric mains switch.
• Isolate the appliance from the electric mains by means of
an isolated device with a contact opening of at least 3 mm
(e.g. safety devices or power switches) and make sure that
it cannot be re-connected accidentally.
• Close the gas shut-off valve upstream the boiler.
• Close any shut-off valves on the heating flow and return
pipes.
After having completed all maintenance work, always perform
the following operations:
• Open the heating flow and return pipes.
• If necessary, restore the heating system pressure until it
reaches the static pressure relative to the highest point of
the system.
• Open the gas shut-off valve.
• Reconnect the appliance to the electric mains and engage
the switch.
• Make sure the appliance is gas tight and watertight.
• Vent the heating system and restore pressure if necessary.
Should you decide to temporarily deactivate the boiler,
you must:
a) shut off the various supplies: electric, water and fuel;
b) empty the water system if antifreeze is not used.
4
inspecTiOns and
MainTenance
OBBLIGO!
indossare guanti protettivi
3.29 - adJUsTing The BUrner
The following instructions are intended
exclusively for
service personnel authorised
by the manufacturer of the burner.
Note: FOR MAINTENANCE MANAGER
The boiler work properly, if calibrating the bur-
ner to a minimum power (Qmin) > 30% of the
nominal power (Qn).
Burner calibration and preliminary operations are
provided in the burner’s instruction booklet.
IN CASE OF LOW NOX BURNERS,
use FLAME INVERSION KIT for Low NOx
burners supplied by the burner
manufacturer.
