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Viessmann vitodens Technical Manual page 125

Gas fired condensing boiler
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Flue pipe, flexible, system size 80 (components) for Vitodens up to 35 kW
(type B
, according to TRGI '86/96)
23x
B
B
B
B
B
B
B
B
B
B
B
B
B
B
A
A
A
A
A
A
A
A
A
A
A
A
A
A
1
1
1
1
1
1
1
1
1
1
1
1
1
1
8
8
8
8
8
8
8
8
8
8
8
8
8
8
6
6
6
6
6
6
6
6
6
6
6
6
6
6
7
7
7
7
7
7
7
7
7
7
7
7
7
7
9
9
9
9
9
9
9
9
9
9
9
9
9
9
F
F
F
F
F
F
F
F
F
F
F
F
F
F
B
B
B
B
B
B
B
B
B
B
B
B
B
B
A
A
A
A
A
A
A
A
A
A
A
A
A
A
D
D
D
D
D
D
D
D
D
D
D
D
D
D
E
E
E
E
E
E
E
E
E
E
E
E
E
E
C
C
C
C
C
C
C
C
C
C
C
C
C
C
Max. total length of the flue pipe (system size 80)
Vitodens 200
Rated output range
Max. length
Vitodens 300 up to 35 kW and Vitodens 333
Rated output range
Max. length
Allowed for:
2 bends of 87º
(incl. support bends)
or
3 bends of 45º
and 0.5 m length of union D.
VITODENS
4.2 Design and sizing information for flue pipe connections
2
2
2
2
2
2
2
2
2
2
2
2
2
2
C
C
C
C
C
C
C
C
C
C
C
C
C
C
3
3
3
3
3
3
3
3
3
3
3
3
3
3
4
4
4
4
4
4
4
4
4
4
4
4
4
4
2
2
2
2
2
2
2
2
2
2
2
2
2
2
5
5
5
5
5
5
5
5
5
5
5
5
5
5
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
kW
m
kW
m
For any different number of bends,
deduct from/add to the given max. length
1 m for 87º bends or 0.5 m for 45º bends.
For a different length of union D, deduct
or add the difference.
Rated output
1 Boiler adaptor
(part of the standard boiler delivery)
2 Basic duct set
comprising:
H Support bend
H Support rail
H Duct cover
H Spacers (5 pieces, max. clearance 2 m)
Spacers (5 pieces, max. clearance 2 m)
3 Inspection piece, straight
for installation into the flexible flue pipe
4 Flue pipe, flexible, on a roll
8, 12.5 or 25 m
5 Union
for connecting residual lengths of the
flexible flue pipe
Pipe lowering attachment
with 20 m rope
6 Flue pipe
1 m long (1 piece)
0.5 m long (1 piece)
7 Inspection piece, straight (1 piece)
8 Flue pipe bend
87º (1 piece)
45º (2 pieces)
or
Inspection tee piece
87º (1 piece)
9 Ventilation flashing (1 piece)
A Secondary ventilation
B Flue gas
C Inspection aperture
D Union
E Ventilation opening, min. 150 cm
F Ventilation air
4.5 12.0
10
Example:
Vitodens 300, 6.6 26.0 kW, with 3 bends 87º
and 1 m length of union D:
Deduct 1 m for the bend and 0.5 m for the
union from max. flue pipe length of 15 m.
Consequently, the max. length would be
13.5 m.
kW
12 26 35
System size
∅ mm
60
80
80
80
80
80
80
80
80
80
80
80
2
2
or 2 × 75 cm
8.8 26.0
15
6.6 26.0
8.7 35.0
15
10
125
4
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