Operating manual Fireplac inserts schieb flat + II
EN
5 | Technical data
39
TIP
When the draft is too great, the draft must be limited. Ensuring the correct draft is a matter for the
stove/tiled stove builder.
TIP
For a chimney draft above 18 Pa it is urgently recommended that a throttle valve (available as an ac-
cessory) be incorporated into the connecting piece!
NOTICE
Operation allowed only with closed firebox.
Minimum cross-sections of chimney / combustion air pipe
Appliance
Minimum chimney cross-section
Minimum exterior air cross-section (for closed
operation)
Up to 3 m length - max.
1 elbow
Up to 6 m length -
max. 2 elbows
65x
75x
Ø 180 mm
180 / 180 mm
120cm²
Pipe Ø 125 mm
175cm²
Pipe Ø 150 mm
80x64 S/SII
97x45/74 S
120x45 S
Ø 180 mm
180 / 180 mm
175cm²
Pipe Ø 150 mm
255cm²
Pipe Ø 180 mm
The following points are to be observed for exterior air conduits:
• do not create a bend, as the cross-section will be reduced
• keep cross-section constant
• The free air passage at the air grille must not be less than the actual cross-section of the recom-
mended external air duct
• there must be no negative pressure (suction) at the point of the air duct intake, even in unfavour-
able wind conditions