PART I: INSTALLATION MANUAL
11
REGULATIONS
Pump priming
Before regulating, the oil pump must be primed as follows:
!
Before starting up the burner, make sure the storage tank return pipe is not blocked. Blockage could cause the pump seal to
break.
!
Start up the burner, open the solenoid valve and vent the air at the pressure gauge connection, then illuminate the photoresi-
stor.
Oil flow regulation
Oil flow is regulated by choosing the correct size of nozzle and calibrating pump delivery pressure (see outline oil circuit diagram
in Fig. 10). To select the nozzle, consult Tab. 1. To regulate pump pressure, see page 12. Further information on oil pump cha-
racteristics are given in the appendix.
SINGLE TUBE INSTALLATION
The burners leave the factory with two-tube fuel supply. They can, however, be converted to single-tube fuel supply.
See appendix for details.
Oil circuit - operating principle
Key
1 Filter
2 Pump
3 Pre-heating tank
4 Pre-heating resistor
5 Pre-heating resistors thermostat
6 Oil enabling thermostat and safety ther-
mostat
7 Oil thermostat
8 Check valve
9 Piston
10 Normally open valve
11 Nozzle
A Nozzle inlet
B By-passed oil
C Returned oil
D Manual drain
E Suction
F Return
Fig. 10
11
9
10
C
B
A
8
7
5
4
3
6
2
E
F
1
