05/2005 - Art. Nr. 13 018 078A
28
Startup
Fuel-oil pressure regulation
L 04.410 DUO
L 04.500 DUO
Legend
1
Suction connection
M16x1.5
2
Return pipe connection M16x1.5
and access to the bypass screw
(hexagon nut 4mm), that should
be used for single-pipe operation.
In this case, return pipe
2
should
be closed.
3
Connection of nozzle pipe
3.1
Nozzle output Stage 1
M8x1
3.2
Nozzle output Stage 2
M8x1
4
Manometer connection
G1/8
5
Vacuum meter connection or
return pressure (for vacuum
meter or manometer)
G1/8
6
Oil pressure controller
6.1
Low pressure control
6.2
High pressure control
7
Ventilation inlets
8
Special pressure connection
m
Does not correspond to
atomization pressure. Do not use.
Fuel-oil pressure regulation
The fuel-oil pressure, and therefore the
burner power, is adjusted for L 04.410
DUO with screw
6.1
for 1
st
stage and
with screw
6.2
for for 2
d
stage.
For L 04.500 DUO, this occurs by
means of pressure controller
6
for both
1
st
and 2
d
stage. Connect a pressure
gauge at point
4
(with R1/8" thread).
Turn:
–
clockwise to increase pressure,
–
and anticlockwise to decrease
pressure
Checking the negative pressure
The vacuum gauge used for checking
negative pressure (and fitted with an
R1/8" thread) should be attached to
connection
7
. Maximum permitted
negative pressure is 0.4 bar. Higher
negative pressure will cause the
heating fuel-oil to turn to gas, leading to
scraping noises in the pump.
Summary of Contents for VECTRON L 04.410 DUO
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