02/2011 - Art. Nr. 4200 1027 9501B
18
Commissioning
Pre-setting without flame
General advice before starting the burner
End of settings menu without flame
When all the positions of the servomotor have been determined according to the required
settings, it is then possible to move on to the next section for commissioning - "Setting the flame".
To do this, place the cursor in the lower part of the screen on the symbol
and confirm by
pressing the button
.
If it is necessary to quit the menu without saving the pre-settings, position the cursor on the
symbol
and confirm with the button
.
Optimising combustion values
Optimum combustion values can be
achieved by adjusting the position of the
baffle plate (dimension
Y
) if necessary.
Doing this can have an effect on starting
characteristics, pulsation and
combustion values. Any reduction in
dimension
Y
increases the CO
2
value.
However, starting characteristics
become harsher.
Compensate for the change in airflow if
necessary by adjusting the air flap
position.
Precautions: To avoid condensation,
observe the minimum required flue
gas temperature specified by the
boiler manufacturer and comply with
the requirements for flue gas ducts.
Risk of deflagration
Continuously check CO, CO
2
and soot emissions when
adjusting. Optimise
combustion values if CO is
present. The CO level must
not exceed 50 ppm.
Function check
Flame monitoring must be checked for
safety as part of initial commissioning
and also after servicing or if the system
has been out of operation for any
significant period of time.
- Starting attempt with gas valve closed:
once the safety time has elapsed, the
control and safety unit should indicate
a lack of gas or switch to malfunction
mode.
- Starting with the air pressure switch
closed:
after an 8-second test period, the
burner switches to malfunction mode.
- Starting attempt with air pressure
switch open:
after a 60-second waiting period, the
control and safety unit locks.
- Starting attempt with brief opening of
the air pressure switch during pre-
ventilation:
the control and safety unit restarts the
pre-ventilation programme (air
pressure detected again within 60
seconds) ; otherwise a lockout occurs.
Combustion
Control
ltd
