User manual

Page 37
When the boiler receives a heat demand the electronics will start the operation of the boiler. Before the
boiler is used, the boiler burner must be adjusted and set at the minimum and maximum load.
ADJUSTING AND SETTING THE BURNER
The burner must always be adjusted and set when a new boiler is installed ,a service and maintenance
check is done or the gas control safety valve is replaced
After the above actions always check the gas/air ratio of the combustion figure (CO2) at minimum and
maximum input. First set the boiler at maximum load and subsequently set at minimum load. See the
following description.
Setting at the maximum load
To start up the boiler in service mode press the [SERVICE] button for around 3 seconds. After that the boiler
will start up and when the service mode is activated the following screen will appear.
Use the [▲] button to increase the actual load of the service (percentage) to the maximum. The following
screen will appear.
When the boiler operates at maximum load, measure the CO
2
percentage at the flue gas outlet of the
boiler. This value should match the values given in the table overleaf. When needed, adjust the gas valve
setting by the adjusting screw [2], see the drawings below for the complete boiler range.
REMINDER: for the 120, 150 and 180 boilers just use the RIGHT gas valve for adjusting.
The display describes:
 The actual operation for heating or hot water
 If there is a heat demand activated
 The temperature setting
 The temperature measured
Display message H E A T I N G : S e r v i c e 2 6 %
> > > 1 2 3 . 4
o
C ( 1 2 3 . 4
o
C )
Reason Boiler is activated and operates at service mode at 26% (minimum).
Display message H E A T I N G : S e r v i c e 1 0 0 %
> > > 1 2 3 . 4
o
C ( 1 2 3 . 4
o
C )
Reason Boiler is activated and operates at service mode at 100% (maximum).
Display message H E A T I N G : N o d e m a n d
> > > : 1 2 3 . 4
o
C ( 1 2 3 . 4
o
C )
Reason Boiler is active, but there is no heat demand.