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6.11.1
Coaxial duct (Ø 60/100mm and Ø 80/125mm)
Coaxial accessories
Description
Coaxial duct kit
Extension W. 1000 mm
Extension W. 500 mm
Vertical extension W. 200 mm with
smoke analysis take-off point
Adapter for Ø 80/125 mm
Additional 90° curve
Additional 45° curve
Tile with joint
Roof outlet terminal W. 1284 mm
Vertical condensation recovery W. 200
mm
Load loss - Equivalent lengths
Model
90° curve
45° curve
Minimum-Maximum Lengths
Duct Length Ø 60/100
W Horizontal
Model
H Vertical (m)
(m)
Min.
Max.
Brava Slim
-
3,5
1,3 (*)
25 BF
Brava Slim
-
3,0
1,3 (*)
30 BF
Brava Slim
-
3,0
1,3 (*)
40 BF
m
CAUTION
(*) Vertical condensate recovery MUST be introduced
for vertical ducts (Type C32) or vertical sections of the
duct (Type C42) longer than 1.3m.
Diaphragms for coaxial ducts
Boilers leave the factory equipped with a diaphragm (1) with the
following characteristics:
– Brava Slim 25 BF : diaphragm Ø 79 mm
– Brava Slim 30 BF : diaphragm Ø 81 mm
– Brava Slim 40 BF : diaphragm Ø 87,5 mm.
66
Code
Ø 60/100
Ø 80/125
mm
8084813
8084830
8096103
8096130
8096102
8086908
-
8093120
8095801
8095820
8095900
8095920
8091300
8091300
8091200
8091200
8092803
8092803
Leq (linear metres)
Ø 60/100
Ø 80/125
mm
1
0,5
Duct Length Ø 80/125
W Horizontal
H Vertical (m)
(m)
Min.
Max.
Min.
Max.
Min.
5
3,5
6
4
5
3
6
4
5
3
6
4
1
When the outlets are Type C12 or C42 the diaphragm is to be re-
moved or kept following the indications below:
Model
Brava Slim 25 BF
Brava Slim 30 BF
mm
Brava Slim 40 BF
Brava Slim 25 BF
Brava Slim 30 BF
-
Brava Slim 40 BF
-
When the outlet is Type C32 (vertically straight without any curves),
the presence of the diaphragm modifies the maximum length of
the duct as shown below:
Model
Brava Slim 25 BF
Brava Slim 25 BF
Brava Slim 30 BF
Brava Slim 30 BF
Brava Slim 40 BF
Brava Slim 40 BF
6.11.2
Separate ducts (Ø 80mm)
mm
Constructing outlets for separate ducts indicates the use of the
1
"air-flue split pipe system". This is to be ordered separately from
0,8
the boiler and when connected to the other accessories, from
those listed in the table below, completes the smoke-outlet/
combustion air inlet assembly.
The total maximum length, obtained by adding the length of the
outlet and inlet pipes, is determined by the load loss of the indi-
vidual accessories and must not be greater than 9 mm H
Brava Slim 25 BF
Max.
H
O for Brava Slim 40 BF .
2
7
Separate accessories
7
Description
7
Air-flue split pipe system (with take-off
point) + Diaphragm
90° curve M-F (6 pieces)
90° curve M-F (with take-off point)
90° curve M-F (insulated)
Extension W. 1000 mm (6 pieces)
Extension W. 1000 mm (insulated)
Extension W. 500 mm (6 pieces)
Extension W. 135 mm (with take-off
point)
Wall outlet terminal
Internal and external ring nut kit
Inlet terminal
45° curve M-F (6 pieces)
Condensate recovery W. 135 mm
Manifold
Tile with joint
Roof outlet terminal W. 1390 mm
Condensate recovery Tee
Inlet/outlet fitting Ø 80/125 mm
Fig. 22
Diaphragm
YES
(leave mounted)
NO
(remove it)
Diaphragm
YES
NO
YES
NO
YES
NO
, 9.5 mm H
O for Brava Slim 30 BF and 15 mm
2
Diameter Ø 80 (mm)
EN
for duct L
< 1 m
> 1 m
Max L (m)
2,5
5
2,5
5
2,5
5
O for
2
Code
8093020
8077410
8077407
8077408
8077309
8077306
8077308
8077304
8089501
8091500
8089500
8077411
8092800
8091400
8091300
8091201
8093300
8091401
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