Ecoflam BLU 2000.1 PAB TL - VGD 40.065 [14/44] Adjustment of gas minimum pressure switch

Ecoflam BLU 2000.1 PAB TC - MB-DLE 415 [14/44] Adjustment of gas minimum pressure switch
14
420010281600 Blu 1700.1÷2000.1 P AB
EN
POSITION OF ELECTRODES
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 regulator 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 combustion 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 available, connected to pressure port E,
until reaching a pressure drop of 1 mbar (10 mm of W.G.). - Slowly increase the adjust-
ment 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 button.
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 pressure; coun-
terclockwise to increase. At the end tighten the locking nut.
2,5
5
10
1
5
50
2
5
3
5
30
40
45
20
0
,4
0,6
0,9
3,0
1,5
2
,
1
1
,8
2,4
2
,7
1,2
I
L
M
N
A
B
C
D
E
F
G
H
The minimum current necessary to operate the control-box is 3
µA (Landis LGB22). When the measurement of the current is
required it is necessary to disconnect the lead to the probe and
insert in its place a microammeter for direct current (see fig.
under).
1
min. 3 µA
LANDIS LGB 22
Microamperometro
fondo scala 50 µA
IONIZATION CURRENT
SETTING THE FIRING HEAD
The firing head position adjustment is made in order to obtain the best combustion efficiency. When used with mini-
mum outputs the firing head is adjusted in rear position. With high output, the firing head is adjusted in forward posi-
tion. Adjustment:
- Loosen screw A through a suitable Allen key. - By a screwdriver act on the hex. head screw B until is reached the desi-
red position. - Tighten screw A
+
B
A
+
--
REMOVING THE BLAST TUBE
3
+
1
0
=
=
5
41
1
+
0
4
1+
0
61
Ignition electrode
Ionization probe

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