A
MIN
MAX
FIRING HEAD SETTING
COMBUSTION AIR FLOW ADJUSTMENT (HIGH-LOW FLAME)
Remove the cover to gain access to the adjustment cams. The cams are adjusted using the key provided for
descrıption:
I
-
Limit switch for the “HIGH FLAME“ position of the air damper (MAX POWER).
II
-
Adjusting cam for the air damper position at shut down.
III -
Limit switch for the “LOW FLAME“ position of the air damper.
IV -
Limit switch “NOT USED”
V
-
Auxiliary switch for the release of the second stage valve (HIGH FLAME).
NOTE : Cam V (to enable the stage two electrovalve to open) is adjusted to an intermediate position
between the low flame and high flame positions (to an angle approximately 5° greater than the low flame
position).
SIEMENS SQN 30-31 121A2700
Release lever
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
EN
13
420010243502
Maior P 60/80/120 AB
