2361
6
GB
COMBUSTION ADJUSTMENT
In conformity with Efficiency Directive EN 267 the application of the burner on the boiler, adjustment
and testing must be carried out observing the instruction manual of the boiler, including verification of
the CO and CO
2
concentration in the flue gases, their temperatures and the average temperature of
the water in the boiler.
To suit the required appliance output, fit the nozzle then adjust the pump pressure, the setting of the
combustion head and the air damper opening in accordance with the following schedule.
The values of the table are referred to 12.5 % of CO
2
at the sea level and with the nominal voltage
26 V D.C.
RECOMMENDED NOZZLES: Monarch type R
Delavan type B
Steinen type S
Danfoss type S
PRESSURE: 12 bar : The pump leaves the factory set at this value
14 bar : Adjust the pressure at this value, when the room temperature
decreases below 5 °C.
COMBUSTION HEAD SETTING: This is done when fitting the nozzle, with the blast tube
removed. It depends on the output of the burner and is car-
ried out by rotating the regulating rod, till the terminal plane
of the blast tube is level with the set-point, as indicated in
the schedule.
Nozzle Pump pressure
Burner output
Comb. head
adjustment
Air damper
adjustment
GPH Angle bar kg/h ± 4% Set-point Set-point
2.00 60° 12 - 14 8.6 - 9.3 1 1.9 - 2.0
2.25 60° 12 - 14 9.7 - 10.5 1.5 2.2 - 2.4
2.50 60° 12 - 14 10.7 - 11.7 2 2.4 - 2.6
3.00 60° 12 - 14 12.9 - 14.0 3 3.7 - 4.4
3.50 60° 12 - 14 15.0 - 16.3 5 4.0 - 4.6
4.00 60° 12 17.2 6 4.8
In the sketch on the left, the combustion head
is set for an output of 3.00 GPH at 12 bar,
while the shutter is level with set-point 3, as
required by the above schedule.
Blast tube
Regulating rod
Shutter
Terminal plane of the blast tube
D5375
2
135
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