Preparing the boiler front
• Prepare the burner mounting plate/
boiler door in accordance with the
diagram.
• Establish the internal diameter a of
155-190 mm.
• To mount the burner head bracket, drill
four M10 holes (drill diameter 175 to
220 mm) as shown in the diagram
opposite.
Burner head assembly
• Screw the bolts into the burner fixing
plate/boiler door and position the
insulation material. For a drill hole of
< 220 mm, elongated slots should be
cut to the required dimensions.
• Remove the combustion components
from the head
• Attach the burner head with 4 nuts (ref.
4). At this point, check that the gas
connection flange is correctly
positioned (on the left or right).
Burner tube installation depth and
brickwork surround
Unless otherwise specified by the boiler
manufacturer, heat generators without a
cooled front wall require brickwork or
insulation 5 as shown in the illustration
opposite. The brickwork must not
protrude beyond the leading edge of the
flame tube, and should have a maximum
conical angle of 60°. Space 6 must be
filled with an elastic, non-flammable
insulation material.
Exhaust gas evacuation system
To avoid unpleasant noise emissions,
right-angled connectors should not be
used on the flue gas side of the boiler.
Fitting the burner body
• Remove the cover (2 screws W).
• Unscrew the two screws on the burner
body completely.
• Bring the burner body into contact after
having swivelled it at least 15° to the
left.
• Engage the two screws Z on the body
into the two lugs provided.
• Tighten the 2 screws.
For assembly in the position with
the volute facing upwards, unclip
the display, turn it over 180°, and
refit it.
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