Ferroli FORCE B Instrucciones De Uso, Instalación Y Mantenimiento página 152

Important
The unit is a B23-type with combustion air drawn from the place of installation, and fume exhaust by means of a fan
(operation with flue pressurised), and must be connected to one of the discharge systems indicated below. Before pro-
ceeding with installation, check and carefully comply with the local regulations and provisions. Also, comply with the
provisions on the positioning of wall and/or roof terminals and the minimum distances from windows, walls, ventilation
openings, etc.
Manifold, ducts and flue must be suitably sized, designed and made in compliance with the current regulations. They
must be made of suitable materials, i.e. resistant to heat and corrosion, smooth on the inside and tight. In particular,
joints must be condensate proof. Also, provide for adequate condensate drainage points, connected to a trap to prevent
the condensate formed in the flues from running into the generators.
Connection with separate pipes
Before installation, make sure the maximum permissi-
ble head has not been exceeded, by means of a sim-
ple calculation:
1. Completely define the layout of the flue system.
2. Consult the table 4 and identify the losses of each
component.
3. Check that the sum total of losses is less than or
equal to the maximum permissible head in table 4.
Table 4Accessories table
Max permissible head (Pa)
PIPE 1 M m/f
PIPE 0.5 M m/f
Ø80 90° BEND
45° BEND
TERMINAL
PIPE 1 M m/f
PIPE 0.5 M m/f
Ø100 90° BEND
45° BEND
TERMINAL
Calculation examples
FORCE B 80: available head 166 Pa
5 meters PIPE Ø80 + 3 BENDS 90° Ø80 = (5 x 7.5) + (3 x 17) = 88.5<166 = OK
8 meters PIPE Ø80 + 8 BENDS Ø80 = (8 x 7.5) + (8 x 17) = 196>166 = NO
152
fig. 56- Connection examples (
cod. 3541T170 - Rev. 00 - 09/2019
FORCE B
=Air /
MODELS
FORCE B 80 FORCE B 120
166 199
7.5 16.0
3.8 8
17 39
8.5 19.5
2.5 5.4
1.3 2.7
7 16
3.5 8
=Fumes)
FORCE B 150
235
24.5
12.3
63
31.5
8.2
4.1
26
13
EN