Ecoflam BLU 500 P AB Manual De Instrucciones página 16

B LB 1208 Blu 500 ÷ 1400 P AB
ADJUSTMENT OF GAS MINIMUM PRESSURE SWITCH
Unscrew off and remove cover M. - Set regulator N to a value equal to 60% of
gas nominal feed pressure (i.e. for nat. gas nom. pressure = 20 mbar, set regula-
tor to a value of 12 mbar; for L.P.G. nom. pressure of G30/G31- 30/37 mbar,
set regulator to a value of 18 mbar).Screw up cover M
DJUSTMENT OF THE AIR PRESSURE SWITCH
Unscrew screws A and B and remove cover C.- Set the pressure switch to the
minimum by turning regulator D to position 1.
- Start the burner and keep in low flame running, while checking that combu-
stion is correct. Through a small cardboard, progressively obstruct the air intake
until to obtain a CO2 increase of 0,5÷0,8% or else, if a pressure gauge is availa-
ble, connected to pressure port E, until reaching a pressure drop of 1 mbar (10
mm of W.G.). - Slowly increase the adjustment value of the air pressure switch
until to have the burner lockout. Remove the obstruction from the air intake,
screw on the cover C and start the burner by pressing the control box rearm but-
ton.
Note: The pressure measured at pressure port E must be within the limits of the pressure switch working
range. If not, loose the locking nut of screw F and gradually turn the same: clockwise to reduce the pressu-
re; counterclockwise to increase. At the end tighten the locking nut.
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 1,5/3 µA.
DESCRIPTION OF THE CONTROL PANEL OF THE BURNER
7
FLAME DETECTION SYSTEM CHECK
LGB21-LGB22 min. 3 µA
LMG21-LMG22 min. 2 µA
1
LANDIS & STAEFA
1
2
3
4
I
5
0
6
1 - fuse
2 - termal lock-out lamp
3 - 1 st. stage working lamp
4 - 2 nd. stage working lamp
5 - high-low flame switch
6 - main switch I / O
7 - reset key
pag.16
N
M
I
L
D
C
A
G
B
SATRONIC DMG 972
min. 1,5 µA
1
50 µA
H
E
F