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Idiomas disponibles
Idiomas disponibles
VENUS BA MS 24- 34
3.6 Fume ducts
Important
The unit is "type C" with sealed chamber and forced draught; the air inlet and fume outlet
must be connected to one of the following extraction/suction systems. Before installation,
check and carefully observe the above prescriptions. Also, comply with the provisions
concerning the positioning of wall and/or roof terminals and the minimum distances from
windows, walls, vents, etc.
Connection with coaxial pipes
fig. 15 - Examples of connection with coaxial pipes (
Table. 2 - Typology
Type
Description
C1X
Wall horizontal exhaust and inlet
C3X
Roof vertical exhaust and inlet
For coaxial connection, fit the unit with one of the following starting accessories. For the
wall hole dimensions, refer to the figure on the cover. Any horizontal sections of the fume
exhaust must be kept sloping slightly towards the boiler, to prevent possible condensate
from flowing back towards the outside and causing dripping.
Ø 100
Ø 60
041002X0 / 08519740
041001X0 / 08519750
fig. 16 - Starting accessory for coaxial ducts
Table. 3 - Max. length of coaxial pipes
Coaxial 60/100
VENUS BA MS 24 VENUS BA MS 34 VENUS BA MS 24 VENUS BA MS 34
Max. permissible length
7 m
(horizontal)
Max. permissible length
8 m
(vertical)
Reduction factor
1 m
90° bend
Reduction factor
0.5 m
45° bend
= Air /
= Fumes)
Ø 127
Ø 80
041006X0 / 08516120
Coaxial 80/125
7 m
28 m
28 m
8 m
1 m
0.5 m
0.5 m
0.5 m
0.25 m
0.25 m
cod. 3541I710 - Rev. 00 - 06/2016
Connection with separate pipes
C
5x
fig. 17 - Examples of connection with separate pipes (
Table. 4 - Typology
Type
Description
C1X
Wall horizontal exhaust and intake. The inlet/outlet terminals must be concentric or close enough to be
undergo similar wind conditions (within 50 cm)
C3X
Roof vertical exhaust and intake. Inlet/outlet terminals like for C12
C5X
Wall or roof exhaust and intake separate or in any case in areas with different pressures. The exhaust
and intake must not be positioned on opposite walls.
C6X
Intake and exhaust with separately certified pipes (EN 1856/1)
B2X
Intake from installation room and wall or roof exhaust
IMPORTANT - THE ROOM MUST BE PROVIDED WITH APPROPRIATE VENTILATION
For the connection of separate ducts, fit the unit with the following starting accessory:
Ø 81
fig. 18 - Starting accessory for separate ducts
Before installation, make sure the maximum permissible length has not been exceeded,
by means of a simple calculation:
1.
Completely establish the layout of the system of split flues, including accessories
and outlet terminals.
2.
Consult the table 6 and identify the losses in m
ponent, according to the installation position.
3.
Check that the sum total of losses is less than or equal to the maximum permissible
length in table 5.
Table. 5 - Maximum length of separate ducts
Max. permissible length
Table. 6 - Accessories
PIPE 1 m M/F
BEND 45° M/F
90° M/F
PIPE SECTION with test point
Ø 80
TERMINAL air, wall
fumes, wall with antiwind
FLUE Split air/fumes 80/80
Fume outlet only Ø80
PIPE 1 m M/F
BEND 90° M/F
Ø 60
REDUCTION 80/60
TERMINAL fumes, wall with antiwind
ATTENTION: CONSIDER THE HIGH PRESSURE LOSSES OF Ø60 ACCESSORIES;
USE THEM ONLY IF NECESSARY AND AT THE LAST FUME EXHAUST SECTION.
B
C
2x
1x
= Air /
Ø 81
041039X0
(equivalent metres) of every com-
eq
VENUS BA MS 24
VENUS BA MS 34
80 m
70 m
eq
Losses in m
Air
Fume exhaust
inlet
Vertical
1KWMA83W
1.0
1.6
1KWMA65W
1.2
1KWMA01W
1,5
1KWMA70W
0.3
1KWMA85A
2.0
1KWMA86A
-
010027X0
-
010026X0 +
-
1KWMA86U
1KWMA89W
1KWMA88W
041050X0
1KWMA90A
EN
= Fumes)
eq
eq
Horizontal
2.0
1.8
2.0
0.3
-
5.0
12.0
4.0
6.0
4.5
5.0
7.0
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