Ecoflam Multicalor 70 Mode D'emploi page 16

420010922100 Multicalor 70 ÷ 140 PR/AB
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.
MANUAL RELEASE
SWITCH
ADJUSTEMENT OF THE COMBUSTION AIR
SIEMENS SQN 30/31 251A2700 AIR DAMPER MOTOR
Remove cover to gain access to the adjusting cams.The cams are to be adju-
sted through the suitable key provided for. Description:
I - Limit switch for air damper "High Flame" position adjustment
(Max. power)
II - Limit switch for the air damper position at burner's shut down
III - Limit switch for air damper "Low Flame" position adjustment
(Min. power)
V - Limit switch for 2nd stage's solenoid valve opening release
NOTE : Cam V (to allow the 2nd stage's solenoid valve opening) must be
adjusted to an intermediate position between the Low and High Flame ones
(to an angle approximately 5° greater than the low flame position).
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N
M
I
L
D
C
A
H
G
E
B
F