Important; Routine Maintenance; Extraordinary Maintenance; Checking The Combustion Parameters - Beretta MySmart 28 C.S.I. Para El Instalador

ENGLISH
HTG curve (Qnheating)
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Heat output (kW)
5 - MAINTENANCE
To ensure product characteristics and efficiency remain intact and
to comply with prescriptions of current regulations, it is necessary to
render the appliance to systematic checks at regular intervals.
When carrying out maintenance work, observe the instructions given
in chapter 1 "Warnings and safety".
Turn off the appliance before carrying out work or maintenance of
structures near the flue discharge connections and/or fume discharge
devices and their accessories. Once work is completed, a qualified
technician must check the efficiency of the appliance.
IMPORTANT: before undertaking any maintenance or cleaning
operations, use the switch of the appliance itself and the system to
interrupt the electrical supply and close the gas supply using the tap
on the boiler.
It is also OBLIGATORY to disconnect the cable connecting the
WiFi Box and the boiler.
- return power to the boiler
- interrupt the vent cycle as described in the section "4.2 Appliance
ignition" on page 9.
5.1

Routine maintenance

b
During boiler maintenance, the use of protective clothing is
recommended, in order to avoid personal injury.
This normally means the following tasks:
- removing any oxidation from the burner;
- removing any scale from the heat exchangers;
- checking and cleaning the drainage pipes;
- checking the external appearance of the boiler;
- checking the ignition, switch-off and operation of the appliance, in
both domestic water mode and heating mode;
- checking the seal on the gas and water couplings and pipes;
- checking the gas consumption at maximum and minimum output;
- checking the position of the ignition-flame detection glowplug;
- check the "no gas" safety system;
- check that the atmospheric tube connection is not obstructed;
- cleaning the filter inside the heating return line tap. Follow the
instructions below:
- set the lever to "filter cleaning"
- unscrew plug A
- remove the filter B and clean it
14
14 16 18 20 22 24 26
- remove any dirt in the filter chamber
- put back the filter
- put back the plug A
- set the lever to the opening position.
opening
position
- Do not clean the appliance or its parts with easily inflammable
substances (e.g. benzine, alcohol, etc.).
28 30
- Do not clean panels, painted parts and plastic parts with paint
thinner. Panel cleaning must be carried out only with soapy water.
b
After standard and non-standard maintenance work, fill the
siphon, following the instructions under "Preliminary cheks".
5.2

Extraordinary maintenance

These tasks restore appliance operation in accordance with the
design and regulations - e.g. following the repair of an accidental
fault. This normally means:
- replacement
- repair
- overhaul of components.
These tasks require special means, equipment and tools.
b
During the initial installation phase, or in the event of
extraordinary maintenance, you are advised to activate the
procedure to discharge air from the heating circuit and boiler
(see section 3.4).
5.3

Checking the combustion parameters

To carry out the combustion analysis, proceed as follows:
- Set the mode selector to
- Turn the domestic hot water temperature selector to the
(fig. 47)
- Wait for the burner to ignite (about 6 seconds). The display shows
"ACO" and the boiler operates at maximum heating output
- Remove the screw C and the cover E on the air box (see fig. 48)
- insert the analyser probes in the prescribed positions on the air box
b
The flue gas analysis probe should be inserted until its reaches
the stop.
- Check that the CO
tables shown below"; if the value shown is different proceed with
changes as indicated in the "Gas valve calibration" chapter.
Max CO
28 C.S.I.
Min CO
28 C.S.I.
- Perform the combustion check.
The "combustion analysis" function remains active for a limited
time of 15 minutes; if a delivery temperature of 90°C is reached the
burner will extinguish. It will reignite when this temperature drops
below 78°C.
- If you want to interrupt the procedure turn the domestic hot water
temperature selector so that it is within the "+" and "-" symbols.
Subsequently:
- remove the analyser probe and close the combustion analysis inlet
- close the instrument panel and refit the shell
When checks are completed:
- Position the knobs depending on the type of operation desired.
B
closing
position
A
to switch off the boiler (fig. 47)
values correspond to the ones indicated in the
2
Methane Liquid gas
2
gas (G20)
9.0
Methane Liquid gas
2
gas (G20)
9.0
filter cleaning
position
position
(G31)
10.0 %
(G31)
10.0 %