16
2.5.4 Maximum usable length
for separate ø 80 flues
The maximum overall length of ø 80 inlet
and exhaust flues is determined by the
load losses of the single accessories
installed and should not exceed 42 mm
H2O.
ATTENTION!When the load loss exceeds
4 mm H 2O, in order to assure the cor-
rect operation of the appliance, set the
installer parameter PAR 9 as indicated
in TABLE 2 (see point 3.3 to access
installer parameters).
2.5.5 Maximum usable
length for coaxial
ø 80/125 flues
In installations with ø 80/125 coaxial flue,
the maximum horizontal length including
the 90° curve, should not exceed 4 m
when the boiler is operating on natural
gas G20 and 3 m when it is operating on
LPG G31.
For vertical flues, it must not be greater
than 5 m straight vertical lines when the
boiler is operating on natural gas G20 and
4 m when operating on LPG G31.
WARNING:
In order to assure the correct operation
of the appliance, set the installer para-
meter PAR 9 as indicated in TABLES
3-3/a (see point 3.3 to access the instal-
ler parameters).
B type
Fig. 6
!
G
N
I
N
R
A
W
When load loss of the individual accessories connected
exceeds 4 mm H2O, in order to assure the correct ope-
ration of the appliance, set the installer parameter PAR
9 as indicated in TABLE 1 (see point 3.3 to access the
installer parameters).
TABLE 1
Load loss
PAR 9
(mm H2O)
(long chimneys)
0
4
-
0
1
8
-
4
8 - 12
2
12 - 16
3
16 - 20
4
20 - 24
5
24 - 28
6
28 - 32
7
32 - 36
8
36 - 40
9
40 - 42
10
WARNING: Before installing accessories, lubricate the internal
part of gaskets with silicon-based products. Avoid using oils
and greases.
80 mm accessories
Key Code
Description
Load loss
mm H20
1
8077450 90° bend
3.0
2a
8077351 1000mm Extension
1,2
2b
8077350 500mm Extension
0,6
3
8091300 Articulated Tile
4
8091204 Roof terminal (1381 mm)
4,3
5
6296513 Extension with test point (250mm)
0.3
6
8077451 45° bend
2,0
7
8089501 Exhaust terminal
3,6
8
8091500 Inner/outer wall seal
(2 of each)
11
Gasket (supplied with boiler)
600
