Ferroli DOMIcompact F 24 B Instructions For Use, Installation And Maintenance page 19

DOMIcompact F 24 B
Connection with 80 mm pipe system
The unit can be connected to a system of sepa-
rate air/flue pipes for a horizontal or vertical
outlet as shown on the fig. 11- 12. Numerous
accessories are available on request to meet
the various installation requirements.
Please refer to the flue manual catalogue or the
price list for additional components.
To check you do not exceed the maximum per-
missible flue length, it is necessary to make a
simple calculation prior to installation:
1. For each component, tables 4 - 5 (page
20) provide an "equivalent loss in metres",
depending on the position of installation of the
component (with air intake or flue extraction,
vertical or horizontal).
The loss is called "equivalent length" since it
is compared to the loss of one metre of flue
(defined as equal to 1). For example, a bend
at 90° of Ø80 in flue run has an equivalent loss
of 2.5 linear metres, i.e. it has a loss equal to
that of 2.5 metres of flue length.
2. After designing the layout of the system, add
up the losses in equivalent metres, depending
on the installation position, of all the compo-
nents and accessories in the system.
3. Check that the total calculated loss is less
than or equal to 55 equivalent metres, i.e.
the maximum permissible for this model of
boiler.
For further flue options please contact
FERROLI or check our comprensive flue
manual.
fig. 11
fig. 12
19