6
x
Oil burner
42
FA ROTEX A1 BO - 10/2007
6.3.2 Instructions for burner setting
The oil burner is factory-set for a certain output range (see tab. 6-1, values printed in bold).
To change the burner output:
– Change the pump pressure,
– Adjust air quantity,
– Regulate the distance of the oil-air nozzles,
– If large adjustment to output is made: change oil nozzle and air nozzle.
Conversion kit
To set some output ranges, a conversion kit URS is needed (see tab. 6-1).
Oil nozzles
ROTEX recommends using
Danfoss Type 80
°
H
oil nozzles to maintain the emission limits as specified in RAL-UZ 46
(see tab. 6-1).
6.3.3 Check vacuum in the oil pump and set the oil pump pressure
Setting oil pressure
The oil pressure on the pump can be varied within the range of 10–18 bar. Increasing the oil pressure leads to higher boiler
output, while reducing the oil pressure leads to lower boiler output.
Tools required
: Screw driver; Allen key SW 4 mm; Manometer 1/8", 0 to 20 bar.
• To increase pressure: Adjusting screw (fig 6-4, pos. 2) for oil pressure to be turned to the
right
.
• To reduce the pressure: Adjusting screw (fig 6-4, pos. 2) for oil pressure to be turned to the
left
.
• To check the oil pressure, connect the manometer to the manometer connection (fig 6-4, pos. 5) of the oil pump.
Check vacuum
For a long and fault-free operation, the oil supply system must be adjusted such that the vacuum does not exceed 0.2 bar.
Tools required: Vacuum meter R 1/8"; Allen key SW 4 mm;
• Connect vacuum meter to the V connection (fig 6-4, pos. 1) and measure vacuum with active burner.
1
Vacuum meter connection
2
Adjusting screw for oil pressure
3
Solenoid valves
4
Pump cover
5
Manometer connection
6
Flow connection
7
Return connection
8
Oil pump filter
Fig. 6-4
Oil pump
CAUTION!
If the vacuum at the oil pump is too high, it causes greater wear to the pump and can destroy it.
If the vacuum is greater than 0.4 bar, the heating oil can degasify. There will be whistling noises in the pump,
the pump can be destroyed. Vacuum greater than 0.2 bar causes greater pump wear.
• Reduce the vacuum, check oil supply if necessary.
