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4.1 Preliminary checks
Before testing the boiler, it is recom-
mended to carry out the following
checks:
- Compliance of the installation with
current standards.
- Flue evacuation ducts and ter-
minal are implemented according
to instruction.
When the boiler is
running no products generated
by combustion are to leak from
gaskets
.
- Power mains supply to boiler is
230 V – 50 Hz.
- The system is correctly loaded
(water pressure gauge must read
0.8 / 1 bar).
- All stopcocks in the system piping
must be open.
- Gas type supplied to the boiler
according to boiler specs. Should
the gas type not correct for the boi-
ler current set-up, the boiler can be
modified for available gas (see the
“ADAPTATION FOR OTHER GASES
AND BURNER ADJUSTMENT” sec-
tion § 3.6).
- Gas supply stopcock is open.
- No gas leaks are detected.
- The external main switch in on.
- Boiler’s safety valve is not bloc-
ked.
- No water leaks are detected.
If the boiler is not installed in com-
pliance with current laws and stan-
dards, inform the system supervisor
and do not test the boiler.
4.2 Switching on and switching
off
For boiler starting up and switching
off procedure, follow “Instruction for
the user” (§ 1).
4. TESTING THE BOILER
Routine boiler maintenance is to
be provided according to applica-
ble laws.
Appropriate boiler maintenance
ensures efficient operation, envi-
ronment preservation, and safety
for people, animals and objects.
Manufacturer recommends
Customers to contact a Service
Centre for all maintenance (and
repairs).
Before implementing any main-
tenance involving replacement of
components and/or cleaning inside
parts of boiler, disconnect electrical
power supply to the boiler.
Maintenance schedule
Routine maintenance schedule
must include the following che-
cks:
- General integrity of the boiler
- Boiler and network gas supply
leakage
- Gas supply pressure to boiler
- Minimum and maximum gas pres-
sures to boiler nozzles
- Boiler ignition
- Boiler combustion parameters by
analysis of flue (this check to be
performed once every two years if
boiler is singularly installed. When
the system is served by multiple
boilers, check is to be performed
annually)
- Flue system integrity, good state
of preservation, and leak test
- Draught stop device (TN model
only)
- Absence of flue gas reflux to the
boiler room and correct discharge
of flue gas (TN model only)
- Operation of safety thermostat
installed on the draught stop (TN
models only)
- Air pressure switch operation (TFS
models only)
- Integrity of safety devices of the
boiler in general
- Water leaks and rusted areas on
the boiler’s couplings
- Efficiency of the system’s safety
valve
- Expansion vessel loading pressure
- Water pressure switch efficiency
The following cleaning is to be
done:
- Boiler internal areas
- Gas nozzles
- Air intake and flue gas exhaust
system (TFS models only)
- Draught stop device (TN models
only)
- Vent grille in boiler room (TN
models only)
- Flue side of the heat exchanger
When implementing a maintenance
schedule for the very first time to
the boiler, also check:
- Boiler room suitability
- Air vents in the boiler room (TN
models only)
- Diametre and length of flue system
ducts
- Boiler installation in accordance to
the “Installation manual” section
Should the boiler not correctly ope-
rate, or should it pose any danger to
people, animals or property, inform
the system supervisor both verbally
and in writing.
5. MAINTENANCE
