ALHENA TECH H
Connection with separate pipes
C
fig. 33- Examples of connection with separate pipes (
Table 6- Typology
Type
Description
Wall horizontal exhaust and intake. The inlet/outlet terminals must be concentric or close enough to be
C1X
subjected to similar wind conditions (within 50cm)
Roof vertical exhaust and intake. Inlet/outlet terminals like for C12
C3X
Separate wall or roof intake and exhaust and in any case in areas with different pressures. The exhaust
C5X
and intake must not be located on opposite walls
Intake and exhaust with separately certified pipes (EN 1856/1)
C6X
Intake from installation room and wall or roof exhaust
B2X
IMPORTANT- THE ROOM MUST BE PROVIDED WITH APPROPRIATE VENTILATION
For the connection of separate ducts, fit the unit with the following starting accessory:
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 8 and identify the losses in m
the installation position.
3.Check that the sum total of losses is less than or equal to the maximum permissible length in
table 7.
Table 7- Max. length separate ducts
Max. permissible length
EN
5x
80
cod. 041082X0
fig. 34- Starting accessory for separate ducts
ALHENA TECH 28 H = 70 m
ALHENA TECH 34 H = 70 m
ALHENA TECH 45 H = 40 m
cod. 3541V622 - Rev 00 - 05/2022
B
2x
= Air /
100
80
60
(equivalent m) of every component, according to
eq
eq
eq
eq
C
1x
= Fumes)
325