Worcester 70/90, Installation And Servicing Instructions

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