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10090943EN
4.5. Connecting the Burner to Oil Supply Line
The burner is equipped for two-pipe system.
Two-pipe system
The piping must be done for two-pipe system according to the drawing, if no Oilon Plus -filter
and deaerator unit is used. Two-pipe system has both suction and return lines for fuel oil to the
tank.
1
Shut-off
valve
2
Oil filter lock
3
Oil
filter
4
Suction
hose
5
Oil
pump
6
Return
hose
7
Shut-off valve/non-return valve
A-A
Delivery
limit
Oilon Plus filter and deaerator unit
We recommend use of an Oilon Plus filter and deaerator unit, where the oil flows from the tank
in one pipe to the unit. The oil pump is connected as in two-pipe system. The by-pass plug must
be fixed in the oil pump. The pressure gauge of the unit indicates if the filter possibly clogs.
1
Oilon Plus filter and deaerator
unit
2 Suction
hose
3 Oil
pump
4 Return
hose
5
Siphonage stop valve,
optional
extra
A siphonage stop valve is
necessary, if the oil level in the
tank lies higher than the filter and
deaerator unit
Filter
The filter should be changed in a two-pipe system at intervals of 1 - 1,5 years. If an Oilon Plus
filter and deaerator unit is used, the time of use is longer.
