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PART I: SPECIFICATIONS
14
How to read the burner “Performance curve”
To check if the burner is suitable for the boiler to which it must be install-
led, the following parameters are needed:
furnace input, in kW or kcal/h (kW = kcal/h/860);
backpressure (data are available on the boiler ID plate or in the
user’s manual).
Example:
Furnace input: 600kW
Backpressure: 4 mbar
In the “Performance curve” diagram, draw a vertical line matching the fur-
nace input value and an horizontal line matching the backpressure value.
The burner is suitable if the intersection point A is inside the performance
curve.
Data are referred to standard conditions: atmospheric pressure at 1013
mbar, ambient temperature at 15° C.
Checking the proper gas train size
Pressure in the Network / gas flow rate curves (natural gas)
To check the proper gas train size, it is necessary to the available gas pres-
sure value upstream the burner’s gas valve. Then subtract the backpressure.
The result is called
pgas.
Draw a vertical line matching the furnace input
value (600kW, in the example), quoted on the x-axis, as far as intercepitng
the network pressure curve, according to the installed gas train (DN65, in the
example). From the interception point, draw an horizontal line as far as
matching, on the y-axis, the value of pressure necessary to get the reque-
sted furnace input. This value must be lower or equal to the
pgas
value, cal-
culated before.
GAS PRESSURE m
b
ar
TLX92R M-..
Stm
3
/h
TLX92.1 M-..
Stm
3
/h
GAS PRESSURE
mbar
TLX512.1 M-..
Stm
3
/h
Campo di lavoro bruciatori
Tipo P60 Mod. M-xx.x.IT.A.0.50 - M-.xx.x.IT.A.0.65
-1
0
1
2
3
4
5
6
7
8
100
200
300
400
500
600
700
800
900
Potenza kW
Contropressione in camera di
combustione mbar
A
backpre
ssur
e i
n
combust
ion chamb
e
r (mbar)
Power kW
0
5
10
15
20
25
100
200
300
400
500
600
700
800
900
Potenza / Output (kW)
Minima pressione gas in
rete / Minimum inlet gas
pressure (mbar)
Rp 2" (50)
DN65
Power kW
minimu
m
ga
s pre
ssur
e
in
the ne
twork mbar
DN65
Содержание TLX92R
Страница 44: ...PART IV MAINTENANCE 43...
Страница 45: ...LME73 000Ax PME73 831AxBC LME73 831AxBC Service instruction manual M12921CB Rel 1 2 02 2016...
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Страница 68: ...Note Specifications and data subject to change Errors and omissions excepted...