420010251101
M aior P 45/60/80/120 PR SW
EN
A
MIN
MAX
COMBUSTION AIR FLOW ADJUSTMENT (HIGH-LOW FLAME)
FIRING HEAD SETTING
The mains feature is the capability to adjust the head to obtein maximum result from different types of plant.
The position of the mixing head determines the speed of the air flow according to pressure upstream from
mixing mixer device.
LANDIS & STAEFA SQN 31 401A2700
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.
II
- Limit switch for ignition flame “Min power” position adjustment.
III
- Limit switch for air damper “Low Flame” position adjustment.
IV
- Limit switch "NOT USED".
V
- Limit switch "NOT USED".
MANUAL RELEASE
SWITCH
All burners are factory tested at 400V - 50Hz 3-phase for motors, and 230V - 50Hz single phase with neutral
for auxiliary equipments. Should it be necessary to power the burner with 230V - 50Hz, modify the connec-
tions on motor and the terminal board as shown in the picture. Protect the burner supply line with suitable
fuses and/or other safety devices as required by the local regulations on the matter.
ELECTRICAL CONNECTIONS
A
B
C
E
D
F
0
AUTO
0
I
A - selector :
0 = operating elements locked in an
intermediate position
1 = operation on maximum capacity
2 = operation on minimum capacity
3 = automatic operation
B - working lamp
C - termal lock-out lamp
D - fuse
E - main switch I / O
F - reset key
DESCRIPTION OF THE CONTROL PANEL OF THE BURNER
A
