Worcester 12/14 Installation And Servicing Instructions page 22

Fig. 21. Electro Oil Inter B9B Burner.
(15/19 model)
Combustion Head
A 2 mm
10 mm
Draught tube Nozzle
Output Dimension
kW Head Type
15 PL 6/7/21.5/10
17 PL 6/7/21.5/10
19 PL 6/7/21.5/10
To adjust the nozzle position, undo the
locking screw located at the rear of the
nozzle line and rotate the adjusting
disc one turn anti-clockwise to move
forward by 1 mm.
Fig. 22. Electro Oil Inter B11 Burner.
(20/25 model).
Combustion Head
A
8 mm
Draught tube Nozzle
Output
Combustion Head
kW
20/25 PL 10/4/24/10 x 78 mm
Spark gap
2-2.5 mm
Photocell
Adjusting
disc
Nozzle block
Pressure Adjustment
Screw
A
3 mm
5 mm
Oil pump
5 mm
Air control indicator
Air adjustment screw
(4mm hexagonal head)
Air adjustment screw
(4 mm hexagonal head)
Spark gap
1 mm
3-3.5 mm
Photocell
Nozzle block
Dimension
A
5 mm
Locking screw
Air control indicator
22
Combustion head
Lockout reset button
Lockout
Pressure
gauge port reset button
Control box
Pressure
Oil pump
adjustment
screw
Transformer
Control box
Transformer