Viessmann vitodens Technical Manual page 123
Gas fired condensing boiler
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Flue pipe, system size 80 and 100 (components)
(type B
/B
according to TRGI '86/96)
23
33
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
5
5
5
5
5
5
5
5
5
5
5
5
5
4
4
4
4
4
4
4
4
4
4
4
4
4
6
6
6
6
6
6
6
6
6
6
6
6
6
A
A
A
A
A
A
A
A
A
A
A
A
A
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
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
C
C
C
C
C
C
C
C
C
C
C
C
C
A Secondary ventilation
B Flue gas
C Inspection aperture
D Union
E Ventilation aperture, min. 150 cm
F Ventilation air
VITODENS
4.2 Design and sizing information for flue pipe connections
B
B
B
B
B
B
B
B
B
B
B
B
B
2
2
2
2
2
2
2
2
2
2
2
2
2
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
2
2
2
2
2
2
2
2
2
2
2
2
2
3
3
3
3
3
3
3
3
3
3
3
3
3
2
2
2
2
2
2
2
2
2
2
2
2
2
3
3
3
3
3
3
3
3
3
3
3
3
3
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
or 2 × 75 cm
up to 49 kW or min. 170 cm
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 (3 pieces,
max. clearance 5 m)
Spacers (3 pieces,
max. clearance 5 m)
3 Flue pipe
1.95 m long (2 pieces @ 1.95 m = 3.9 m)
2 m long (2 pieces @ 2 m = 4 m)
1.95 m long (1 piece)
2 m long (1 piece)
1 m long (1 piece)
0.5 m long (1 piece)
4 Inspection piece, straight (1 piece)
5 Flue pipe bend
87º (1 piece)
45º (2 pieces)
6 Ventilation flashing (1 piece)
Flue pipe bend
(for use in corbelled ducts)
30º (2 pieces)
15º (2 pieces)
Balanced flue inspection tee piece
87º (1 piece)
2
at 66 kW
kW
12 26 35 49 66
System size
∅ mm
60
80
100
60
80
100
60
80
100
60
80
100
60
80
100
60
80
100
60
80
100
60
80
100
60
80
100
60
80
100
60
80
100
4
60
80
100
123
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