Systema EOLO BC RT - Maximum Adjustment and Fine Adjustment; Rough Adjustment; Fine Adjustment

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SYSTEMA EOLO RT rev. 09ENIT04052021
COLLAUDO
8.3.5 Maximum adjustment and ne adjustment
To adjust the burner parameters, carry out a maximum adjustment and then a ne adjustment as shown below
8.3.5.1 Rough adjustment
a. Activate the burner and adjust it to maximum thermal load.
b. Check the gas pressure entering the solenoid valve. (it must not be lower than the nominal supply pres-
sure in the gas system, for the type of gas envisaged and decreased by a possible pressure drop up to a
maximum of -20%)
c. Remove the cap of the maximum pressure regulator (9) - using a screwdriver.
d. Using the Allen wrench size 3, adjust by turning to the right or left, as needed. Turning to the right "+"
increases the amount of gas in the gas and air mixture. As a result the lambda value (λ) decreases while
the C02 value increases. Turning to the left "-" decreases the amount of gas in the air / gas mixture. As a
result the lambda value (λ) increases while the C02 value decreases.
e. Reached the ue gas parameters in accordance with table 8.6 on page 92 (BC version) and the table 8.8
on page 94 (BL version), check the gas pressure at the outlet of the solenoid valve (11). Compare the
value with the diagrams of the solenoid valve models and calculate the heat input of the appliance. If the
power complies with the nominal value indicated on the nameplate, ne adjustment can be made - O󰀨set.
8.3.5.2 Fine adjustment
f. Unscrew the screw that closes the minimum OFFSET pressure regulator (10)
g. Change the PWM regulation of the burner at minimum load (see paragraph 5.1.3 on page 56, Description
of command / control and paragraph 5.1.4 on page 57 for the burner parameters.
h. Measure the combustion quality with an exhaust gas analyzer.
i. Correct the settings with the minimum pressure regulator OFFSET +/- depending on the maximum set-
ting. To do this, you need a TORX key n ° T40; changes must be made step-by-step every 30 degrees of
rotation.
j. After the adjustment, disable the burner and enable it again. After the second activation of the burner,
carry out the ue gas analysis once more and check the functioning of the gas valve. After the adjustment,
protect the adjustment screws with the appropriate caps.
WARNING
Check that the pressure measurement screws (11) and (12) upstream and downstream of the
solenoid valve have been retightened.
Please note
To ensure class 5 of NO emissionsX, the value λ must have a maximum thermal load of not
less than 1.3.
The measurement of NOX (3% of O2) with the value of λ equal to 1.3 gives results below 30
ppm.