Larger gas amount flow is reached when gas regulator valve angle is
62%. If gas consumption is not sufficient, check gas supply line control
pressure and adjust if necessary.
Adjust at full load curve point:
● burner capacity, note ratio
● set fan rotation speed as small as possible
● check combustion values with flue gas analysis
● check combustion flame
● set point load setting at 100%
When you have made the required changes, save the maximum load curve point.
If the curve point for maximum load has an influence in the linear gas
supply pressure, check the setting at the minimum point and adjust, if
necessary.
Middle points are set manually by decreasing load manually for example at 10%
intervals. Note that residual oxygen level is sufficiently over-aired if the burner is
equipped with O
2
trim control. The residual oxygen level is set 1% higher than the
normal level. There can be 15 curve points at the maximum. Set at least 10 curve
points for O
2
trim control.
Measure fuel consumption at each adjusting point so that the set of
curves correspond to the actual load conditions.
Check combustion values with ignition load using flue gas analysis.
When curve points have been set, exit from the curve setting menu level, and set the
burner to operate at minimum load from manual operation menu level.
Description
ManualOperation
SetLoad
Fixed load setting on manual
operation, percentages of
maximum load (%)
When exiting the
Params. & Display
menu level, changes can be stored to the
operating and display unit memory.
Store changes by answering
yes
.
After adjusting burner maximum capacity, adjust the gas pressure
maximum switch. See section
Adjusting gas pressure switch
.
56 (102)
M4263 2206EN
