Beretta QUADRA II 24 C.S.I. Manual De Instalacion Y Uso página 8

ENGLISH
When adjustment is complete:
- restore set temperature with the ambient thermostat to the desired
temperature
- set the heating water temperature selector to the desired position
- close the instrument panel
- pull the shell back in place.
4.6 Gas conversion operations
Conversion from a family gas to other family gas can be performed
easily also when the boiler is installed.
The boiler is designed to operate with methane gas (G20) according
to the product label.
It is possible to convert the boilers from one gas type to another by
using the appropriate kit supplied upon request:
- Methane conversion kit
- LPG conversion kit
For disassembly refer to instructions below:
- remove power supply from the boiler and close the gas tap
- remove in sequence: shell, air distribution box cover and combus-
tion chamber cover (fig. 19)
- disconnect the spark plug cable connection
- slide off the lower cable grommet from the seat of the air distribution
box
- remove the burner fixing screws and remove the latter with the
spark plug attached and corresponding cables
- using a socket or fork spanner, remove the nozzles and the wash-
ers and replace them with the ones in the kit.
Use and assemble the washers contained in the kit also
in case of manifolds without washers.
- reinsert the burner in the combustion chamber and tighten the
screws fixing it to the gas manifold
- place the cable grommet with the spark plug cable in its seat in
the air distribution box
- restore connection of the spark plug cable
- refit the combustion chamber cover and the cover of the air distribu-
tion box
- overturn the control instrument panel towards the boiler front part
- open the card cover
- on the control card (fig. 16):
- if the conversion is from methane gas to LPG, insert the jumper
in position JP3
- if the conversion is from LPG to methane gas, remove the jumper
from position JP3
- reposition the components previously removed
- restore voltage to the boiler and reopen the gas tap (with boiler
in operation, check correct seal of the gas feeding circuit connec-
tions).
Conversion must be carried out by qualified personnel.
After conversion, adjust the boiler again following the
indications in specific section and apply the new identifi-
cation label contained in the kit.
5 MAINTENANCE
o ensure product characteristics and efficiency remain intact and
T
to comply with prescriptions of current regulations, it is necessary
to render the appliance to systematic checks at regular intervals.
Control frequency depends on the installation and use conditions,
but it is therefore necessary an annual check-up by the authorised
personnel from the Technical Assistance Service.
Turn off the appliance to carry out the maintenance of the structure
near the flue exhaust connections or devices, and their accessories.
Once the interventions are finished a qualified technician must check
that the pipes and the devices work correctly.
IMPORTANT: before carrying out any cleaning or maintenance
operation of the appliance, use the appliance and system switch
to interrupt power supply and close the gas supply turning the tap
placed on the boiler.
Do not clean the appliance or its parts with inflammable substances
(e.g. petrol, alcohol, etc.).
Do not clean panels, painted parts and plastic parts with paint thinner.
Panel cleaning must be carried out only with soapy water.
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5.1 Check the combustion parameters
To carry out the combustion analysis, proceed as follows:
- open the hot water tap to its maximum output
- set the mode selector to summer
temperature selector to the maximum value (fig. 8a).
- remove the screw of the combustion analysis inlet cover (fig. 18)
and insert the probes
- power the boiler
The appliance works at maximum output and it is possible to check
combustion.
After analysis is complete:
- close the hot water tap
- remove the probe from the analyser and close the combustion
analysis inlet fastening carefully the screw previously removed.
and the domestic hot water