How To Interpret The Burner's "Performance Curve - Unigas RG515 Manual Of Installation - Use - Maintenance

How to interpret the burner's "Performance curve"

To check if the burner is suitable for the boiler to which it must be installled, the following parameters are needed:

furnace input, in kW or kcal/h (kW = kcal/h / 860);

backpressure (data are available on the boiler's ID plate or in the user's manual).
Example:
Furnace input: 600kW
Backpressure: 4mbar
In the "Performance curve" diagram (Fig. 2), draw a vertical line matching the furnace 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 1013mbar, ambient temperature at 15°C.
Burner model identification
Burners are identified by burner type and model. Burner model identification is described as follows.
Type RG520 Model
(1)
(1) BURNER TYPE
(2) FUEL
(3) OPERATION (Available versions)
(4) BLAST TUBE
(5) DESTINATION COUNTRY
(6) BURNER VERSION
Tipo P60 Mod. M-xx.x.IT.A.0.50 - M-.xx.x.IT.A.0.65
8
7
6
5
4
3
2
1
0
-1
100 200
* *.
G-. PR. S. A.
(2) (3) (4) (5) (6)
Campo di lavoro bruciatori
A
300 400 500 600 700
Potenza kW
Fig. 2
RG91 - RG92 - RG93 - RG510 - RG515 - RG520 - RG525
G - Light oil
PR - Progressive
S - standard
* - see data plate*
A - Standard
6
800 900
MD - Fully modulating
L - extended