69EN
cod. 3540000272 - Rev. 01 - 01/2024
Connection with separate pipes
fig. 23- Examples of connection with separate pipes ( = Air / = Fumes)
Table 5- Typology
For the connection of separate ducts, fit the unit with the following starting accessory:
fig. 24- Starting accessory for separate ducts
Before installation, 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 terminals.
2. Consult table 7 and identify the losses in m
eq
(equivalent m) of every component, 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 6.
Table 6- Max. length separate ducts
Type Description
C1X Wall horizontal exhaust and intake. The inlet/outlet terminals must be concentric or close enough to be
subjected to similar wind conditions (within 50cm)
C3X Roof vertical exhaust and intake. Inlet/outlet terminals like for C12
C5X Separate wall or roof intake and exhaust and in any case in areas with different pressures. The exhaust
and intake must not be located 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
Max. permissible length 24 kW = 80 m
eq
28 kW = 70 m
eq
34 kw = 70 m
eq
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