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47
INSTALLATION OF THE HORIZONTAL AIR/FLUE DUCT
☞ Observe the maximum flue
lengths as detailed in table on
page 42.
Horizontal air/flue duct
Vaillant Accy No.: 303 209
Contents of the accessory:
• Horizontal air/flue duct
• 87° elbow
• 2 x 70 mm air duct clamps
• 1 x internal plastic ring Ø 125
• 1 x external metal plate
☞ See page 39 et seq. for details of
air/flue duct elements.
Fig. 4.1: Horizontal air/flue conduit
GU_LAZ 82/0
Fig. 4.2: Example of installation with horizontal air/flue duct
IMPORTANT:
The air/flue duct is not concentric
and the air duct has a slope of 1.5°
(if the air flue duct is not cut). The
hole through the wall can therefore
be drilled horizontally with no slope.
Where extensions are used, these
must be installed with a slope at 3° ±
1° (equivalent to 50 mm ± 20 mm
rise per metre length) to ensure that
condensate dows not remain in the
sleeve.
PART 2 CONCENTRIC 80/125
834449_09GB_082006.qxd 10.08.2006 12:20 Seite 47
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