Cuenod NC29 GX207/8A [11/52] Assembly

Cuenod NC29 GX207/8A [11/52] Assembly
11/2009 - Art. Nr. 4200 1018 3800A 11
Assembly
Burner assembly
Ø a Ø b c d
140 165-220 M10 45°
Preparing the boiler front
• Prepare the burner mounting plate/
boiler door in accordance with the
diagram.
• Establish the internal diameter a of
140mm.
• To mount the burner head bracket, drill
four M10 holes (drill diameter 165 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)
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
• 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.
On boilers with reverse firing, minimum
flame tube insertion depth A should be
observed as per the boiler
manufacturer's instructions.
en

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