Burner Adjustment - elco VECTRON Betriebsanleitung

Startup

Burner adjustment

Adjusting the burner
· Open the gas ball valve.
· Set the gas and air pressure
switches to the minimum values.
· Connect a micro ammeter (0-100µA)
in place of the measuring bridge
(test polarity).
· Press on the rocker switch S1/H10.1
- S29J- S2K .
· Switch on the boiler controller.
· Re-set the control unit.
· Check the combustion values (CO,
CO ) after the flame has appeared.
2
· Read the ionisation current
(reference value min. 8µA).
· Read the gas flow on the gas meter.
· Increase power on full load by
pressing on + on the push-button
switch S3
· Check combustion values. Re-adjust
the gas/air ratio depending on the
value measured:
on the SKP, adjust the adjusting
–
screw R. For this, remove the upper
cover. More CO in direction +. Less
2
CO in direction -. (see upper
2
symbol section SKP70 page )
adjust screw V on the valve MB
–
VEF. More CO in direction of
2
higher scale values. Less CO
direction of lower scale values (see
page ).
· To reach the desired yield, respect
CO and combustion values as
2
recommended by the boiler
manufacturer.
· Read the measurement of the
ionisation current (minimum
recommended value: 8µA).
· Read the gas flow on the gas meter.
· Switch the burner to part-load and
check combustion values.
Depending on measures, adjust
screw D on the controller SKP or
adjust screw N on the controller MB
VEF.
· Determine the desired part-load with
the button S3. For this, depending
on requirements, adjust cam V on
the flap servomotor.
· Once again check combustion
values, and, depending on
measures, re-adjust gas/air ratios.
· Switch the burner to full load and
check combustion values.
· If the measures of screw D have
changed on the controller SKP, or
screw N on the valve MB VEF,
re-adjust the ratio R on the
controller SKP or ratio V on valve
MB VEF, as desired.
· If combustion head (dimension Y)
in the
2
settings require modification,
adjustments must begin at zero.
03/2005 - Art. Nr. 13 018 104A
If combustion values are correct,
continue as follows for the part-load
and full load:
· Adjust the gas flow by adjusting
cams V and I on the servomotor.
· Check the gas flow on the gas
meter.
Ignition load setting
The ignition load must be set with cam
III to ensure safe burner startup.
EN
37