12
420010263000
BLU 500.1 ÷ 1200.1 PAB
EN
CONTROL BOXES LANDIS & STAEFA LGB21/LGB22
The Landis control box starts the fan and begins the pre-purging of the combustion chamber. The air pressure switch
controls the correct operation. At the end of the pre-purging phase, the ignition transformer cuts-in followed by the
opening of the gas valves. In case of missed ignition or accidental shutdown, the ionisation probe cuts-in and set the
burner in lockout mode within the safety time.
!
"
#
$% &'(&""
) ! * %
# ! * %
Description
! * % :
45
: !
5
!*%
75
;
5
!
5
:
85
Remove cover to gain access to the adjusting cams.The cams are to be
adjusted 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).
MANUAL RELEASE
SWITCH
LANDIS & STAEFA SQN 30 151A2700 AIR
DAMPER MOTOR
AIR
EXCESS
(%)
AIR
FACTOR
10
10
20
30
40 50 60
70
80
90
100
200
300 400
500
600
700
800
900
1000
2000
1,1
1,15
1,2
1,2
1,2
1,25
1,3
15
20
25
30
THERMAL POWER (kW)
ADJUSTING THE COMBUSTION
L.P.G.
CO
2
11,7 %
CO < 50 ppm
Nat. gas
CO
2
9,6 %
CO < 50 ppm
WARNING:
in order to adjust combustion and thermal capacity correctly, the fumes must be analyzed using specific instru-
ments. Combustion and thermal capacity must be adjusted simultaneously, making sure that the values read are correct and
in any case, that they comply with the safety regulations in force.
THIS OPERATION MUST BE PERFORMED BY PERSONNEL WHO ARE PROFESSIONALLY QUALIFIED
AND AUTHORIZED BY ECOFLAM SPA.
