Beretta Exclusive Green E C.S.I. Serie Manual Del Instalador página 31

20 - CHECKING COMBUSTION PARAMETER (Fig. 1.21)
Do as follows to analyze combustion:
- go to CALIBRATION & SERVICE and set the combustion analysis
password as given in paragraph "Adjustments"
- insert the analyzer probe into the specific openings on the air box,
after removing screw B and cap C.
b
The fumes analysis probe must be introduced as far as
possible.
- screw the analyzer setscrews into the fumes analysis opening
- the first display gives the reading of the number of turns corresponding
to maximum heating power set on the boiler (see paragraph
"Adjustments" item P23).
After turning the domestic hot water temperature selector again the
boiler will ignite to check combustion
- check combustion
- refer to the "Adjustments" paragraph if the boiler has to be gauged
- remove the analyzer gauge and close the combustion analysis
openings by their screws.
IMPORTANT
The function switching off the boiler when the water temperature reaches
maximum limit of about 90°C will also stay on during combustion analysis.
21 - MAINTENANCE
The appliance must be systematically controlled at regular intervals to
make sure it works correctly and efficiently and conforms to legislative
provisions in force.
The frequency of controls depends on the conditions of installation and
usage, it being anyhow necessary to have a complete check carried
out by authorized personnel from the Servicing Centre every year.
b
After routine and extraordinary maintenance operations have
been carried out, fill the siphon, following the instructions in
the section "Switching on".
6400
6000
5600
5200
4800
4400
4000
3600
3200
2800
2400
2000
1600
1200
800
2 4
Heat capacity curve – fan rpm (Qnrisc) – 25 kW
6 8 10 12 Heating heat capacity (kW)
IMPORTANT: always switch off the power to the appliance and
close the gas by the gas cock on the boiler before carrying out any
maintenance and cleaning jobs on the boiler.
• Check and compare the boiler's performance with the relative
specifications. Any cause of visible deterioration must be immediately
identified and eliminated.
• Closely inspect the boiler for signs of damages or deterioration,
particularly with the drainage and aspiration system and electrical
apparatus.
• Check and adjust – where necessary – all the burner's parameters.
• Check and adjust – where necessary – the system's pressure.
• Analyze combustion. Compare results with the product's specification.
Any loss in performance must be identified and corrected by finding
and eliminating the cause.
• Make sure the main heat exchanger is clean and free of any residuals
or obstruction; if necessary clean it.
• Check and clean – where necessary – the condensation tray to
make sure it works properly.
• Check operation of the check valve if it is installed (see section
"Installation on collective flues in positive pressure").
Do not clean the appliance or any latter part with flammable substances
(e.g. petrol, alcohol, etc.).
Do not clean panelling, enamelled and plastic parts with paint solvents.
Panels must be cleaned with ordinary soap and water only.
22 - RANGE RATED
The boiler is supplied with the settings shown in the table. But said values
may be adjusted by following the graphs given here below, depending
on installation requirements or regional rules and regulations combusted
gas emission limits.
14 16 18 20 22 24 26 28
ENGLISH
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