Sime Dewy 30 Guia Del Usuario página 89

2.6. 1 Separate pipe accessories
Kit code 8089903 is supplied for this pur-
pose (fig. 9).
The sectored diaphragm is to be used
according to the maximum head loss
allowed in both pipes, as given in fig. 10.
3 2
4
5
KEY
1 Blind flange
2 Flue gas duct flange
3 Fixing screw
4 Gasket ø 125/95
5 Intake duct collar
2.6.2 Connection with existing flues
The ø 80 flue gas pipe may be connected to
an existing flue.
When the "DEWY 30/80" boiler is running
at a low temperature, a regular flue may be
used under the following conditions:
– No other boiler must be using the flue.
– The flue interior must be shielded
from direct contact with condensation
from the boiler.
The products of combustion must be
conveyed through a flexible or rigid pla-
stic pipe around 100 to 150 mm in dia-
KEY
1 Tile with articulated joint
2 Lead panel
3 Collar
4 Locking screw
5 Reducing fitting
with washer
3 1
Fig. 9
meter, and condensation must be sipho-
ned off at the foot of the pipe.
The usable height of the water trap must
be at least 150 mm.
2.6.3 Separate-pipes roof outlet
The roof outlet terminal L. 1240 cannot be
shortened and when positioning the tile, the
minimum distance from the discharge head
terminal must not be less than 700 mm
(fig. 11).
The accessories to be used for this type of
installation and some of the connecting
systems that may be adopted are illustra-
ted in fig. 12.
Fig. 11
KEY
1 Separate pipes kit code 8089903
2 90° elbow MF code 8077404
3 90° elbow MF with take-off points code 8077407
4a Extension L. 1000 code 8096000
4b Extension L. 500 code 8096001
5 Outlet terminal code 8089501
6 Int.-est. ring kit code 8091500
7 Inlet terminal code 8089500
8 90° elbow MF code 8077406
There is the possibility of doubling the air-
intake and smoke-outlet pipes and then brin-
ging them back together again so as to
obtain a concentric discharge by using the
doubler fitting (9 fig. 12).
In these cases, when assembling, recover
the silicone gasket used on the terminal
adapter (5 fig. 11), which is to be replaced
by the doubler, and insert it into the seat
made in the doubler.
For this type of discharge the sum of the
maximum
allowed for the pipes must not exceed
15,5 mm H
When calculating the lengths of pipe, take
into account the parameters given in the
Table 2.
KEY
1 Separate pipes kit code 8089903
2 90° elbow MF code 8077404
3 90° elbow MF
with take-off points code 8077407
4 a Extension L. 1000 code 8096000
4 b Extension L. 500 code 8096001
6 Int.-est. ring kit code 8091500
7 Inlet terminal code 8089500
9 Doubler fitting code 8091400
10 Tile with articulated joint code 8091300
11 Roof outlet terminal L. 1240 code 8091201
12 Extension L. 135
with take-off points code 8077304
Fig. 10
rectilinear development
O.
2
Fig. 12
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