02/2011 - Art. Nr. 4200 1027 9501B
22
Saving the adjustment values in the display
If the burner setting procedure has been successfully completed,
the servomotor positions for all the operating states will be fixed in
the control unit. It is possible to store a backup copy of the values
in the display.
To do this, press the button
, the screen opposite is displayed.
Using the button
select the menu
"Save adjustment values"
and confirm with the button
.
The screen opposite appears. Place the cursor on the symbol
,
press the button
to begin loading the adjustment values from
the control unit to the display.
A this point, it is possible to:
- store the values in the display; to do this place the cursor on the
symbol
and confirm with button
.
- quit the menu without storing the data, with the symbol
.
Commissioning
Setting the gas pressure switch
Setting the air pressure switch
Saving the adjustment values in the display
Setting the gas pressure switch
• To set the switch-off pressure: remove
the cover from the gas pressure
switch.
• Install a gas pressure
pBr
measuring
instrument.
• Start the burner. Switch to 2
nd
stage.
• Reduce the pressure upstream of the
gas train by gradually closing the
manual valve, until
- the gas pressure
pBr
downstream of
the train drops
- the flame becomes less stable
- the CO level increases
- or the flame signal deteriorates
considerably
• Turn the dial clockwise until the gas
pressure switch shuts down the
burner.
• Continue turning the dial clockwise to
set the gas pressure switch to 10%
above the shutdown value determined
above.
Checking the switch-off pressure
• Open the manual shut-off valve
• Start the burner
• Close the manual shut-off valve
The gas failure procedure should start
without the control unit locking.
Setting the air pressure switch
• Install a pressure measuring device.
To do this, install a T union in the air
tube.
• Start the burner running in the 1
st
stage.
• Set the switch-off point to
approximately 15% below the switch-
off pressure read.
Combustion
Control
ltd
