22
COMBUSTION HEAD ADJUSTMENT
Adjustments can be made to the burner, when it is still open for installation (see page 17, FIXING TO THE BOILER).
NOZZLE CHOICE
Spray angle:
- usually 60°;
- for narrow combustion chambers 45°.
In two stage operation until 18 kg/h the 1st and
2nd nozzles are not equal, this in order to obtain
in the 1st stage higher values of CO2.
SETTING OF GAS DISTRIBUTOR
The burner leaves the factory setted for burning
natural gas (see the drawing on the right).
• Each hole (F) and each pipe (T) completely
opened.
• For operation up to 200.000 kcal/h, close the
(1) - (2) - (3) and (4) holes (F) by means of 4
nozzles supplied together with the LPG-kit.
To burn LPG fit the kit as detailed below:
• Fit 6 nozzles with 3 mm diameter outlets to
holes (F).
Pump
pressure
NOZZLES
1°
2°
1° + 2°
bar
GPH
kg/h
GPH
kg/h
kg/h
10
12
2.25
2.25
8.7
9.6
1.75
1.75
6.7
7.4
15.4
17.0
10
12
2.25
2.25
8.7
9.6
2.00
2.00
7.7
8.5
16.4
18.1
10
12
2.25
2.25
8.7
9.6
2.25
2.25
8.7
9.6
17.4
19.2
10
12
2.50
2.50
9.6
10.6
2.50
2.50
9.6
10.6
19.2
21.2
10
12
3.00
3.00
11.6
12.8
3.00
3.00
11.6
12.8
23.2
25.6
10
12
3.50
3.50
13.5
14.9
3.50
3.50
13.5
14.9
27.0
29.8
10
4.00
15.4
4.00
15.4
30.8
POSITION OF THE
IGNITION ELECTRODES
D1949
1st stage nozzle
2nd stage nozzle
Summary of Contents for GI/EMME 300
Page 51: ......
