Combustion air supply via horizontal pipes
Rated heat-
ing output
range in
kW
System size
Max. height/length in m
Flue sys-
tem
Ventilation
air routing
Flue
Ventilation
air line
Vitocrossal 200, type CM2
80 to 87
DN 125
DN 150
25
11
80 to 87
DN 150
DN 150
30
30
105 to 115
DN 125
DN 150
10
5
105 to 115
DN 150
DN 150
30
30
130 to 142
DN 150
DN 150
28
11
130 to 142
DN 200
DN 150
30
30
170 to 186
DN 200
DN 150
30
10
170 to 186
DN 200
DN 200
30
30
225 to 246
DN 200
DN 200
26
6
285 to 311
DN 250
DN 250
30
30
Vitocrossal 300, type CT3U
370 to 400
DN 250
DN 250
30
30
460 to 500
DN 250
DN 250
25
15
375 to 630
DN 250
DN 250
8
5
The details apply subject to the following assumptions:
■ Length of the connection piece (flue): 2 m and 3 x 87° bends (includ-
ing support bends)
■ Length of the connection piece (ventilation air line): 2.5 m and 2 x
87° bends
Note
With the Vitocrossal 200 with MatriX radiant burner, a draught of 70
Pa is available for the balanced flue system.
Minimum distance for secondary ventilation between the internal
cross-section of the shaft and the female connection, see page 31.
For
balanced
flue operation, the Vitocrossal 200 requires a flue pipe
between the gas condensing boiler and the shaft (chimney) (type C
33
to TRGI 2008).
System size flue pipe
7
125, 150, 200 and 250 mm.
If the ventilation air supply is routed separately, use individual com-
ponents of the flue pipe size
7
150 or 200 mm.
A boiler flue connection must be ordered for the connection to the
Vitocrossal.
For routing through shafts or ducts with longitudinal ventilation
that meet the requirements for domestic chimneys to DIN V
18160-1, or have a fire rating of 90 min (L90).
For system size diameter 125, 150, 200 and 250 mm
2
A
B
3
4
3
2
3
2
2
4 6
5
C
3
1
3
A
D
A
Ventilation air
B
Flue gas
C
Inspection port
D
Minimum internal shaft dimension (see page 31)
1
Boiler flue connection
(order separately)
Extension
2
Basic shaft unit
comprising
– Support bend
– Support rail
– Shaft cover
– Spacers (3 pce)
Spacers
(3 pce)
3
Pipe
– 2 m long (2 pce = 4 m long)
– 2 m long (1 pce)
– 1 m long (1 pce)
– 0.5 m long (1 pce)
4
Inspection piece
Straight (1 pce)
5
Flue bend
87° (1 pce)
45° (2 pce)
Flue bend
(for use in corbelled chimneys)
30° (2 pce)
15° (2 pce)
6
Inspection bend
87° (1 pce)
Reducer
Design information
(cont.)
36
VIESMANN
Gas condensing boilers
8
5822 449 GB