baltur TBML 350 ME, Руководство пользователя

Страница: 72 / 88

POWER AT START-UP
The standard EN 676 prescribes that for burners with maximum
output above 120 kW the ignition must occur at a lower power
|b|Pstart|bb| than the maximum power of operation |b|Pmax|bb| at
which the burner is calibrated.
|b|Pstart|bb| it depends on the safety time of the burner equip-
ment; in particular:
ts = 2s → |b|Pstart|bb| ≤ 0.5 x |b|Pmax|bb|.
ts = 3s → |b|Pstart|bb| ≤ 0.333 x |b|Pmax|bb|.
|b|Esempio|bb| if the maximum regulation power of the burner
|b|Pmax|bb| is equal to 900 kW, it must be:
|b|Pstart|bb| ≤ 450 kW with ts = 2s
|b|Pstart|bb| ≤ 300 kW with ts = 3s
Power at start-up check
• Disconnect the flame sensor wire (in this case the burner
turns on and goes into lock-out after the safety time ts).
• Perform 10 consecutive ignitions and following block.
• Measure at the meter the amount of gas burned |b|Qstart|bb|
[m³] and check that |b|Qstart ≤ Pmax /360|bb| (|b|Pmax|bb|
in m³/h)
|b| Esempio|bb|
Pmax = 90 m³/h (about 900 kW with natural gas)
After 10 ignitions with the related block, the gas consumption read
on the meter must be:
|b|Qstart|bb| ≤ 90/360 = 0.25 [m³]
If this does not occur, reduce the flow of gas to the ignition through
the brake of the valve.
ENGLISH
28 / 28
0006160077_201401