Worcester 50/70 Installation And Servicing Instructions page 14

Fig. 13. Electro Oil Inter B9 Burner.
(50/70 Model).
Combustion Head
A 2 mm
10 mm
Draught tube Nozzle
Output Combustion
kW Head
15 PL 6/7/21.5/10 x 78 mm
17 PL 6/7/21.5/10 x 78 mm
19 PL 6/7/21.5/10 x 78 mm
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. 14. Electro Oil Inter B11 Burner.
(70/90 Model).
Combustion Head
A
10 mm
Draught tube Nozzle
Output
Combustion Head
kW
20-25 PL 10/4/24/10 x 78 mm
Spark gap
2.0 - 2.5 mm
Photocell
Adjusting
disc
Nozzle block
Pressure
adjustment
screw
Dimension
A
3 mm
5 mm
5 mm
Oil pump
Air control indicator
Air adjustment screw
(4 mm hexagonal head)
Spark gap
2 mm
3-3.5 mm
Photocell
Nozzle block
Dimension
A
5 mm
Locking screw
Air adjustment screw
(4mm hexagonal head)
Air control indicator
14
Combustion head
Lockout reset button
Pressure Lockout
gauge port reset button
Control box
Pressure
Oil pump
adjustment
screw
Transformer
Control box
Transformer