Riello 20190698, Инструкции по установке, использованию и обслуживанию

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20190798 18 GB
Installation
4.11 Combustion head adjustment
At this stage of installation the blast tube and the pipe coupling
are secured to the boiler as shown in Fig. 17.
Therefore the adjustment of the combustion head is particularly
easy, an adjustment that depends solely on the maximum power
of the burner.
Therefore, this value must be set before adjusting the
combustion head.
Two adjustments of the combustion head are available.
Air adjustment Fig. 17
See diagram Fig. 18.
Rotate the screw 4)(Fig. 17) until the notch you have found
corresponds with the front surface 5)(Fig. 17) of the flange.
Gas adjustment Fig. 17
When the burner is installed for maximum output 1300 Mcal/h
(about 1500 kW), fit discs 1) and 2)(Fig. 17) supplied as standard
by removing the inner tube 3)(Fig. 17).
If the mains gas pressure is low, the head can be left in standard
configuration, limiting the modulation minimum to 450 Mcal/h
(about 520 kW).
Example: MAX burner output = 1370 Mcal/h.
The diagram (Fig. 18) shows that for this burner output, the air
adjustment should be made on notch 3, as in Fig. 17.
The example on page 21 shows that a burner with an output of
1370 Mcal/h (1593 kW) requires about 8 mbar of pressure at test
point 6)(Fig. 17).
Before starting the burner, carry out the adjustments for the
output required and indicated in the diagram (Fig. 18).
NOTE:
Depending on the specific application, the adjustment can
be modified.
Fig. 17
5
3
2
1
0
4
6
3 1 2
D3811
Fig. 18
Notches No. (air = gas)
Burner maximum output
D3812
10
1200
9
7
5
3
1
1900 1700 1500 1300 1100
8
6
4
2
0
kW
Mcal / h
1400 1600 1800 2000 2200 2800 2600 2400
2100 2300 2500