4.3 PUMP PRESSURE AND AIR OUTPUT
st
1
STAGE ADJUSTMENT
ADJUSTMENT OF AIR SHUTTER:
Unloosen the nut (1), turn the screw (2) until the indicator (3) reaches the position desired. Then lock the nut
(1), (see fig. 14).
PRESSURE REGULATION:
This is set at 9 bar at the factory.
Should it be necessary to re-set or alter such pressure, this can be done, by adjusting screw (7).
The pressure gauge must be mounted in place of cap (8), (see fig. 15).
nd
2
STAGE ADJUSTMENT
ADJUSTMENT OF AIR SHUTTER:
Unloosen the nut (4), turn the screw (5) un-
til the indicator (6) reaches the position de-
sired.
Then lock the nut (4), (see fig. 14).
PRESSURE REGULATION:
This is set at 15 bar at the factory.
Should it be necessary to re-set or alter
such pressure, this can be done, by ad-
justing screw (9).
The pressure gauge must be mounted in
place of cap (8), (see fig. 15).
When burner shuts down the air damper au-
tomatically closes till a
max. chimney depressure of 0,5 mbar.
4.4 FUEL HEATING
In order to assure regular ignition and working also at low temperature the burner has an oil pre-heater
fitted in combustion head. The pre-heater starts when thermostats close.
When the required temperature for ignition is reached the thermostat fitted on the nozzle holder starts the
burner. The pre heater remains energised during working and cuts out when burner shuts-down.
2328
Fig. 15
S7078
8
GB
Fig. 14