Checking The Combustion Parameters - Beretta QUADRA GREEN 25 C.S.I. Manual De Instalacion Y Uso

QUADRA GREEN C.S.I.
table 1
MAXIMUM NUMBER OF
FAN ROTATIONS
25 C.S.I. heating - DHW
30 C.S.I. heating - DHW
table 2
MINIMUM NUMBER OF
FAN ROTATIONS
25 C.S.I.
30 C.S.I.
table 3
Max. CO
2
25 C.S.I.
30 C.S.I.
table 4
Min. CO
2
25 C.S.I.
30 C.S.I.
table 5
SLOW IGNITION
25 C.S.I.
30 C.S.I.
4.8 Gas conversion (fig. 42-43)
Gas conversion from one family of gases to another can also be easily
performed when the boiler is installed.
This operation must be carried out by professionally qualified personnel.
The boiler is designed to operate with methane gas (G20) according to the
product label.
It is possible to convert the boiler to propane gas, using the special kit.
For disassembly, refer to the instructions below:
- switch off the power supply to the boiler and close the gas tap
- remove in sequence: housing and air distribution box cover
- remove the fixing screw from the instrument panel
- unhook and turn the instrument panel forwards
- remove the gas valve (A)
- remove the nozzle (B) inside the gas valve and replace it with the nozzle
from the kit
- refit the gas valve
- remove the silencer from the mixer
- open the two half-shells by prising apart the corresponding hooks (C)
- replace the air diaphragm (D) in the silencer
- refit the air distribution box cover
- re-power the boiler and turn on the gas tap
Adjust the boiler as described in the chapter entitled "Adjustments" with
reference to the information on LPG.
Conversion must be carried out by qualified personnel.
Once the conversion is complete, affix the new identification
label supplied in the kit.

4.9 Checking the combustion parameters

To carry out the combustion analysis, proceed as follows:
- set the main switch of the installation to the "OFF" position
Method 1 - frontal procedure
- turn the selector to position
Method 2 - board procedure
- loosen the fixing screws (D) on the housing (fig. 13)
- move the base of the housing forwards and then upwards to unhook it
from the chassis
- loosen the fixing screws (E) on the instrument panel (fig. 14)
- lift then turn the instrument panel towards you
- loosen the fixing screws on the cover (F) to access the terminal board
(fig. 16)
- using a small screwdriver included, press the CO button (fig. 26)
Live electrical parts (230 V AC).
12
METHANE LIQUID GAS
GAS (G20) (G31)
49 - 61 49 - 61
53 - 62 52 - 60
METHANE LIQUID GAS
GAS (G20) (G31)
14 14
14 14
METHANE LIQUID GAS
GAS (G20) (G31)
9,0 10,5
9,0 10,5
METHANE LIQUID GAS
GAS (G20) (G31)
9,5 10,5
9,5 10,5
METHANE LIQUID GAS
GAS (G20) (G31)
40 40
40 40
- chimney sweep function
For both methods
- Wait for burner ignition. The display shows "ACO", the yellow LED flash-
es and the boiler operates at maximum heat output.
- Insert the analyser probe in the ports provided in the air distribution box,
after removing the screws from the cover (fig. 41).
rpm
- Check that the CO
shown is different, change it as indicated in the chapter entitled "Gas
rpm
valve calibration".
- Perform the combustion check.
Then:
- remove the analyser probe and close the sockets for combustion analy-
sis with the special screw
- close the instrument panel and refit the housing.
rpm
The flue gas analysis probe must be fully inserted as far as pos-
sible.
rpm
IMPORTANT
Even during the combustion analysis phase, the function that switches the
boiler off when the water temperature reaches the maximum limit (about
90°C) remains enabled.
5 MAINTENANCE
%
The appliance must be systematically controlled at regular intervals to
%
make sure it works correctly and efficiently and conforms to legislative pro-
visions 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.
- Check and compare the boiler's performance with the relative specifica-
tions. Any cause of visible deterioration must be immediately identified
%
and eliminated.
%
- Closely inspect the boiler for signs of damages or deterioration, particu-
larly 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.
rpm
- Make sure the main heat exchanger is clean and free of any residuals or
obstruction; if necessary clean it.
rpm
- Check and clean – where necessary – the condensation tray to make
sure it works properly.
After routine and extraordinary maintenance operations have
been carried out, fill the siphon, following the instructions in the
section "Switching on the appliance".
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.
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.
BURNER CLEANING
The flame side of the burner is made with an innovative material of the
latest generation.
- Be especially careful during the dismantling, handling and installation of
the burner and the components next to it (e.g.. electrodes, insulation pa-
nels, etc.)
- Avoid direct contact with any cleaning device (e.g. brushes, vacuum cle-
aners, blowers, etc.).
In general, the burner does not require maintenance, but particular cases
may occur where cleaning is necessary (e.g.. distribution network of gas
containing solid particles and in the absence of a filter on the line, suction
air containing excessively adhesive particulates, etc.).
For this reason, perform a visual control of the burner in order to ensure the
proper functioning of the product:
- remove the front cover of the air box
- unscrew the fastening nut of the gas train to the valve, remove the gas
train spring clip to the mixer and turn the gas train outwards
- remove the silencer from the mixer
- disconnect the connectors of the wiring from the fan and the connecting
cables of the electrodes
- unscrew the fixing screws and remove the exchanger-fan cover assem-
bly from its seat
- unscrew the fixing screws and remove the burner from its seat checking
it condition.
If necessary, clean the burner with compressed air, blowing
from the metal side of the burner.
It is possible that with ageing, the fibres constituting the flame
side of the burner can tone the colour.
- Reassemble everything in reverse order
If necessary, proceed with the replacement of the sealing gas-
kets.
The manufacturer declines all responsibility for any damage caused from
the failure to observe that stated above.
values match those given in the table, if the value
2