Mounting the collar shaft
Depending on the length and the form of the concentric duct
system Ø100 - Ø150 mm and the outlet construction, you must
mount a collar shaft with a diameter of Ø70mm, Ø65 mm or
Ø40mm according to the tables. The standard passage for
flue gases is Ø 100 mm on the upper side of the combustion
chamber.
Ensure that the collar shaft is properly fitted. Fitting
!
the collar shaft incorrectly may cause defects to the
appliance.
Gastype
A (min.-max.)
Nat. gas
1,0 - 3,0 m
Nat. gas
1,2 - 3,0 m
all dimensions are exclusive the length of the wall outlet
Gastype
B (min. -
A1 (min. -
max.)
max.)
Nat. gas
1 - 3 m
1 - 10 m
(A1 + A2 : B) : 1
Proportion vertical: horizontal (or 45
is always at least 2 : 1
all dimensions are exclusive the length of the roof outlet
B (min. - max.)
Collar shaft
0 - 0,5 m
70 mm
1,0 - 3,0 m
NO
A1 + A2
Collar
(min. - max.)
shaft
1 - 10 m
NO
up)
o
Gastype
A (min. - max)
Nat. gas
5,0 - 10,0 m
Nat. gas
1,0 - 5,0 m
all dimensions are exclusive the length of the roof outlet
Collar shaft
Ø 40 mm
Ø 65 mm
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