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COMBUSTION AIR FLOW ADJUSTMENT (HIGH-LOW FLAME)
MANUAL RELEASE
SWITCH
The mains feature is the capability to adjust the head to obtein maximum result from different types of plant. The posi-
tion of the mixing head determines the speed of the air flow according to pressure upstream from mixing mixer device.
A
All burners are factory tested at 400V - 50Hz 3-phase for motors, and 230V - 50Hz single phase with neutral for auxi-
liary equipments. Should it be necessary to power the burner with 230V - 50Hz, modify the connections 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.
DESCRIPTION OF THE CONTROL PANEL OF THE BURNER
F
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".
FIRING HEAD SETTING
MAX
MIN
ELECTRICAL CONNECTIONS
A
AUTO
B
0
C
D
I
E
0
15
420010355002 Maior P 45/60/80/120 PR
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
A
EN
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