DOMItech F 24 - F 32
31
EN
cod. 3540R832 - 0
/201
(Rev. 00)
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.
Baffles
Boiler operation requires fitting the baffles supplied with the unit. Check that the boiler
has right baffle (if to be used) and its correct positioning.
A
Baffle replacement with
boiler not installed
B
Baffle replacement with
boiler and fume ducts already installed
Connection with coaxial pipes
fig. 9 - Examples of connection with coaxial pipes (
= Air /
= Fumes)
Table. 2 - Typology
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 outside, to prevent condensate from
flowing back towards the unit.
fig. 10 - Starting accessory for coaxial ducts
Table. 3 - Baffles for coaxial ducts
Connection with separate pipes
fig. 11 - Examples of connection with separate pipes (
= Air /
= Fumes)
Table. 4 - Typology
For connection of the separate ducts, fit the unit with the following starting accessory:
fig. 12 - Starting accessory for separate ducts
Before installation, check the baffle to be used and make sure the maximum permissible
length has not been exceeded, by means of a simple calculation:
1.
Establish the layout of the system of split flues, including accessories and outlet ter-
minals.
2.
Consult the table 6 and identify the losses in m
eq
(equivalent metres) of every com-
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 - Baffles for separate ducts
Type
Description
C1X
Wall horizontal exhaust and inlet
C3X
Roof vertical exhaust and inlet
Coaxial 60/100
Coaxial 80/125
Max. permissible length
DOMItech F 24 = 5 m
DOMItech F 32 = 4 m
10 m
Reduction factor
90° bend
1 m
0.5 m
Reduction factor
45° bend
0.5 m
0.25 m
Baffle to use
DOMItech F 24
0 ÷ 2 m = Ø 43
DOMItech F 32
0 ÷ 2 m = Ø 47
DOMItech F 24
0 ÷ 3 m = Ø 43
DOMItech F 32
0 ÷ 3 m = Ø 47
DOMItech F 24
2 ÷ 5 m = no baffle
DOMItech F 32
2 ÷ 4 m = no baffle
DOMItech F 24
3 ÷ 10 m = no baffle
DOMItech F 32
3 ÷ 10 m = no baffle
A
1
1
2
2
4
3
3
5
6
B
C
1X
C
1X
C
3X
C
3X
C
3X
C
1X
010014X0
010006X0
010007X0
80
100
60
125
68
11
8
123.5
45.6
100
60
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
DOMItech F 24
DOMItech F 32
Max. permissible length
60 m
eq
45 m
eq
Baffle to use
0 - 20 m
eq
Ø 43
0 - 15 m
eq
Ø 47
20 - 45 m
eq
Ø 47
15 - 30 m
eq
Ø 50
45 - 60 m
eq
No baffle
30 - 45 m
eq
No baffle
C
5x
C
3x
B
2x
C
1x
max 50 cm
50
80
010011X0
80
32
