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SECOND STAGE POWER REGULATION.
After having completed the ignition power adjustment, press key (9)
towards symbol in order to reach air and gas maximum delivery.
Check that the electric servomotor second stage gas flow rate
regulation cam is positioned at
130°.
•
To regulate the gas flow operate the valve pressure regulator. Con
-
sult the instructions related to the installed gas valve model. Avoid
keeping the burner running if the heating capacity is greater than
the maximum amount allowed for the boiler, to avoid damaging it.
•
For adjusting the air flow rate, operate on the screws (11), correct
the rotation angle of the air gate in the suitable position to guaran
-
tee the right quantity for the power burned.
•
Check the combustion parameters with appropriate instruments
(C02 max= 10%, O2 min=3%, CO max=0,1%)
FIRST STAGE POWER REGULATION
Once burner adjustment to maximum power has been completed,
restore burner minimum power. Press key (9) towards symbol (
) without changing the adjustment of the already-adjusted gas valve.
•
Regulate the minimum flame gas flow rate to the required value
using the regulation cam for servomotor minimum output.
•
Check the combustion parameters in the 1st stage with appropriate
instruments (C02 max= 10%, O2 min=3%, CO max=0,1%)
ADJUSTING THE FLOW RATE FOR IGNITION
•
Once regulation of minimum flame has been carried out, the burner
needs to be switched off and check that ignition occurs properly. If
necessary, it is possible to optimise burner regulation during igni
-
tion, proceeding as follows:
-
Adjust the ignition gas flow rate, by acting on the ignition power
adjustment cam. It is often advisable to set the ignition cam to a
slightly higher angle than the one of the minimum flame cam.
•
Check the activation of the flame detector (ionisation electrode) by
disconnecting the ionisation cable and connecting the burner.
The equipment must run through its cycle completely and, three se-
conds after the ignition flame has formed, “lock-out”.
This test should also be conducted with the burner already on. The
apparatus should shut down immediately when the ionisation cable
is disconnected.
•
Check the efficiency of the thermostats or boiler pressure switches
(they should shut down the burner when triggered).
IMPORTANT
Once the adjusting operations are completed, visually check
that the thin plate on which the bearing acts has a progressive
profile.
Using the special instruments, check also that throughout the
entire burner operating range, the combustion parameters are
not too far from optimal values.
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ENGLISH
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Содержание TBG 450LX MC
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