FERtech 18 OV
20
Cod. 3540U291 - 11/2009 (Rev. 00)
Ref.
2
4
5
36
29
1
Vertical air pipe Ø80
Vertical flue pipe Ø80
80 Ø vertical flue Kit
Description
Equivalent
loss
36 m
46,4 m
12,0 m
94,4 m
Total
Table 3
fig. 19
Connection with 80 mm pipe system
The unit can be connected to a system of separate air/flue
pipes for a Horizontal or Vertical outlet as shown fig 18 - 19
. Numerous accessories are available on request to meet
the various installation requirements. The components
used most frequently are stated in tables 4 - 5. Please
refer to the flue manual or the price list for additional
components.
To check you do not exceed the maximum permissible
flue length, it is necessary to make a simple calculation
before installation:
1. For each component, tables 4 - 5 provide an “equiva-
lent loss in linear 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 extraction has
an equivalent loss of 2 linear metres, i.e. it has a loss
equal to that of 2 linear metres of flue length.
2. After completely defining the layout of the system of split
flues, add up the losses in equivalent metres, depending
on the installation position, of all the components and
accessories in the system.
3. Check that the total calculated loss is less than or equal
to
95
equivalent
metres
, i.e. the maximum permissible
for this model of boiler.
For complete flue options please contact fer or
check our comprehensive flue manual.
120
134
66
Ø80
AIR
Ø80
FLUE
Remove
the closing
cap
144
280
4
5
1KWMA83W
1KWMA82U
1KWMA84U
2
041039X0
041039X0
fig. 18
