82
refer to
Table 1
and to the example given in
fig. 7/a.
2.8.1
Separate ducts kit
(fig. 8 - fig. 8/a - fig. 9)
The separate ducts kit code 8089904 (fig.
8) is supplied with the aspiration diaph-
ragm which must be used, according to the
maximum loss of charge allowed in both
the ducts, as indicated in fig. 8/a.
To use the air intake vent in this type of
discharge, the following operations must be
carried out (fig. 9):
– Remove the base of the air intake vent
by cutting it with a tool (a);
– Turn the air intake vent upside down and
replace the gasket (5) with that supplied
in the kit code 8089904;
– Insert the aspiration diaphragm supplied
in the kit code 8089904, pushing it
home;
Now the extension or the curve can be fit-
ted into the special seat in order to comple-
te the aspiration pipe (no washer or sealant
is necessary).
Example of allowable installation
“25/55 BF”
calculation in that the sum of the head losses
of the single fittings is less than 8.5 mm H
2
O:
Intake
Outlet
7 meter horizontal pipe ø 80 x 0.25
1.75
–
7 meter horizontal pipe ø 80 x 0.35
–
2.45
No. 2 90° elbows ø 80 x 0.40
0.80
–
No. 2 90° elbows ø 80 x 0.45
–
0.90
No. 1 wall terminal ø 80
0.15
0.60
Total head loss
2.70
+
3.95 =
6.65 mmH
2
O
With this total head loss, remove the segments from No. 1 to No. 8 from diaphragm in the intake
pipe.
1
2
3
4
6
188
91
14
9
10
4
ø80
15
6
10
0
Fig. 8
Fig. 8/a
Fig. 7/a
KEY
1 ø 125/95 sponge seal
2 Fixing screw
3 Flue outlet flange
4 Inlet air diaphragm
6 Manifold with intakes
TABLE 1
Accessories ø 80
Load loss (mmH
2
O)
25/55
30/55
Intake
Outlet
Intake
Outlet
90° curve MF
0.40
0.45
0.60
0.65
45° curve MF
0.35
0.40
0.55
0.60
Extension L. 1000 (horizontal)
0.25
0.35
0.30
0.40
Extension L. 1000 (vertical)
0.25
0.15
0.30
0.20
Wall terminal
0.15
0.60
0.20
1.10
T-shaped condensation collector
---
0.90
---
1.30
Roof exit terminal*
1.80
0.15
2.30
0.25
* The loss of the roof exit terminal in aspiration concludes the collector code 8091400
No. segments
Total load loss mm H
2
O
to remove
25/55
30/55
none
0 ÷ 1.0
0 ÷ 2.0
No. 1
---
2.0 ÷ 3.0
No. 1 e 2
1.0 ÷ 2.0
3.0 ÷ 5.0
from No. 1 to 3
2.0 ÷ 3.0
---
from No. 1 to 4
3.0 ÷ 4.0
5.0 ÷ 6.0
from No. 1 to 5
4.0 ÷ 5.0
6.0 ÷ 7.0
from No. 1 to 6
---
7.0 ÷ 8.0
from No. 1 to 7
5.0 ÷ 6.0
8.0 ÷ 9.0
from No. 1 to 8
6.0 ÷ 7.0
9.0 ÷ 10.0
from No. 1 to 9
---
10.0 ÷ 11.0
from No. 1 to 10
---
---
without diaphragm
7.0 ÷ 8.5
11.0 ÷ 12.0
Summary of Contents for MURELLE EV 25/55 BF
Page 1: ...MURELLE EV 25 30 55 Fonderie SIME S p A Cod 6304353 12 2012 ES PT ENG...
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