Adjusting Air/Gas Pressure Switch - Ecoflam MAX GAS 350 P Mode D'emploi

420010400701 Max Gas 350 - 500 P/P AB
EN
8,0
7,0
6,0
5,0
4,0
3,0
2,0
1,0
0,0
-1,0
50 100
8,0
7,0
6,0
5,0
4,0
3,0
2,0
1,0
0,0
-1,0
50 100 150
ADJUSTING THE AIR PRESSURE SWITCH
The air pressure switch must be adjusted so that an insufficient air flow does not allow
the CO value to exceed 1% in volume. After having adjusted the gas flow and obtained
optimum combustion (CO
pressure switch must be adjusted. Remove the cover with the burner operating, cover
the air intake progressively with a piece of cardboard to obtain a value of CO
(G20-G25)> 13 (G30-G31) and a CO value of less than 5,000 ppm. Adjust the air
pressure switch until the burner shuts down. Remove the cardboard from the air intake
and start up the burner again. Replace the cover.
ADJUSTING THE GAS PRESSURE SWITCH
Adjust the pressure switch to 50% of the rated pressure of the gas used.
RARED PRESSURE:
PRE-CALIBRATION MAX GAS 500
16
150 200 250
EXAMPLE OF PRE-CALIBRATION MAX GAS 500
16 15
14 13 12,5
1 2
200 250 300 350 400 450
Gas pressure in head
kW
= 9.5 to 9.8% and a CO value of less than 75 ppm), the air
2
G 20 = 20 mbar G 25 = 25 mbar
G 30 = 29 mbar G 31 = 37 mbar
15 14 13
1 2
300 350 400
kW
Warning: the pre-calibration values have been
determined on EN676 test combustion cham-
bers in ideal conditions, and are useful for the
12
first switch-on but must be checked and correc-
11,5
ted with calibration for the individual system.
Example in figure:
5
Power required by the generator: 380 kW.
4
Pressure envisaged in combustion chamber: 3.5
mbar. Combustion head chamber: 2.5 (between
3
2 and 3). Gas pressure in head: 13 mbar.
500 550 600
pressione gas in testa mbar
Head position
posizione testa
22
12,5
12
11,5
5
4
3
450 500 550
Gas pressure in head
pressione gas in testa mbar
Head position
posizione testa
A
= 10.8
2
B
C
D
600