Adjusting Air/Gas Pressure Switch; Position Of Electrodes - Ecoflam MAX GAS 350 PR-MD HT Mode D'emploi

8,0
7,0
6,0
5,0
4,0
3,0
2,0
1,0
0,0
-1,0
50 100 150 200
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 feeding pressure of the gas used.
With the burner switched off, connect a DC microammeter
with a 0÷50 or 0÷100 µA dial. When the burner is running,
and is properly adjusted, the value read must be steady and
never be smaller than 1,5 µA (LME 22) .
EXAMPLE OF PRE-CALIBRATION MAX GAS 500
16 15
14 13 12,5
12
1 2 3
250 300 350 400 450
Gas pressure in head
kW
pressione gas in testa mbar
Head position
= 9.5 to 9.8% and a CO value of less than 75 ppm), the air
2
FLAME DETECTION SYSTEM CHECK

POSITION OF ELECTRODES

A
IONIZATION
PROBE
420010567100 Max Gas 350 - 500 PR-MD HT
Warning: the pre-calibration values have been
determined on EN676 test combustion cham-
bers in ideal conditions, and are useful for the
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
2 and 3). Gas pressure in head: 13 mbar.
500 550 600
posizione testa
2
A
IGNITION
ELECTRODE
23
A
= 10.8
B
C
D
1
min. 1,5 µA
LANDIS
LME11/LME21-22
EN