Ecoflam BLU 700.1 P AB Manual Del Usuario página 16

420010243303 Blu 700.1 ÷ 1200.1 P AB Low Nox
EN
Min gas pressure switch
The gas pressure switch has the function to check that the gas pressure before the gas
valve does have the minimum pressure to make the burner running correctly.
Unscrew off and remove cover M.
- Set knob N to a value equal to 60% of gas nominal feed pressure (i.e. for natural gas
nom. pressure = 20 mbar, set knob to a value of 12 mbar; for LPG nom. pressure of
G30/G31- 30/37 mbar, set knob to a value of 18 mbar). Screw up cover M.
Air pressure switch calibration
The air pressure switch is provided for monitoring the pressure of the
combustion air fan. Unscrew screws A and B and remove cover C.
• Adjust the combustion with air pressure switch (APS) set at minimum.
• Start to obstruct the air inlet with a paper paying attention to O2 and CO values red
on the analyzer.
• Progressively increase air inlet obstruction till the CO valve is slightly more than 1000
ppm. Stop obstruction in this position.
• Increase APS setting up to burner lock out.
• Now the APS is set to avoid CO production during the combustion.
• Remove air obstruction and fit again APS cover C.
With the burner switched off, connect a DC microammeter with a 0÷50 or 0÷100 µA dial. When the burner is run-
ning, and is properly adjusted, the value read must be steady and never be smaller than 1,5 µA.
7
The burners are produced with connections suitable for power supply 400 V three-phase.
The burners with electric motors of an output lower or equal to 7,5 kW can be adapted to 220-230 V (please follow the
instructions on the backside); motors with higher output can only work 380-400 V three-phase.
In case of request of burners different from the above mentioned standard, it is recommended to make specific mention
in the order.
Instructions: how to adapt electric motors of an output lower or equal to 7,5 kW to 220-230 V power supply
It is possible to change the voltage of the burner by operating as follows:
FLAME DETECTION SYSTEM CHECK
DESCRIPTION OF THE CONTROL PANEL OF THE BURNER
I
0
1
min. 1,5 µA
LME11/LME21-22
1
1 - fuse
2
2 - termal lock-out lamp
3 - 1 st. stage working lamp
3
4 - 2 nd. stage working lamp
4
5 - high-low flame switch
5
6 - main switch I / O
6 7 - reset key
16
M
I
L
C
A
B
SIEMENS
N
D
H
G
E
F