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BMV3 / BMV4 / BMV5 : 662Y1000 • A
2. ASSEMBLY
2.1. Assembly dimensions
The dimensions of the burner and boiler connection are ac-
cording to DIN EN 226 (dimensions in mm), see gure 7.
2.2. Installing the burner
Install sliding ange and seal onto the heat generator us-
ing the supplied M8 screws. The mounting screw of the
sliding ange must be turned upwards.
Insert burner with burner pipe into the ange until the
burner pipe is ush with the inside of the combustion
chamber. Observe special instructions of the heat genera-
tor manufacturer, if any.
Tighten the mounting screw of the ange clamp.
Caution: The flange must be oriented to ensure that the
burner is installed with the correct angle (see fig. 6).
Install the recirculation tube.
2.3. Service position
Loosen the service screw by 1/2 turn using a 4 mm hexagon
socket wrench (see g. 8). Turn the burner to the left and re-
move it from the burner pipe. Then, place it in the service
position (see g. 9).
2.4. Change of the nozzle
Loosen screw (2) using a 4 mm hexagon socket wrench
and remove the bae plate (1) (see g. 9).
Select a new nozzle according to the required perfor-
mance range (see table on page 9).
Remove installed nozzle (3) and screw on the selected
nozzle (see g. 9).
Check the distance between the bae plate (1) and the
nozzle (3) (see g. 10).
Install the bae plate (1) back in place and tighten the
screw (2).
Caution: The baffle plate and nozzle could be hot!
Control and re-adjust the ignition electrodes if necessary
(see g. 10).
Bring the burner in operating position and tighten the
service screw.
2.5. Nozzle table
The oil ow rate specied in the nozzle table refers to a vis-
cosity of the preheated heating oil of approx. 2 mm2/s.
2.6. Combustion chamber – minimum dimensions
According to GN 267, low-emission combustion values can only
be reached if the combustion chamber minimum dimensions
are complied with.
Combustion chamber - minimum dimensions
Oil flow rate
Diameter resp.
height and width
Depth from the baffle
plate
1.0 - 2.0 kg/h Ø 225 mm 250 - 350 mm
2.0 - 6.0 kg/h Ø 300 mm 350 - 612 mm
Figure 7
Figure 9
3
1
2
spacer ring
2,5 mm
Figure 8
Service screw
4


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