Sime Open.zip 25 BF TS, Installer'S Instructions

Page: 61 / 80

the outer surface of the pipes, especially
in cold weather.
– Discharge pipes fitted outside the buil-
ding or in cold environments must be
insulated, otherwise the burner may not
start up. In such cases, a condensation
collection system must be fitted onto the
pipes.
– If the duct passes through flammable
walls, insulate the stretch of the fumes
discharge duct concerned with a fiber-
glass covering 30 mm thick, density 50
kg/m
3 .
The overall maximum length, i.e. the sum
of the length of the aspiration and of the
discharge pipes, depends on the charge
loss of the single accessories inserted,
and must not exceed 7.6 mm H
2
O in
model “25 BF TS” - 9 mm H
2
O in model
“30 BF TS”.
For charge losses of accessories, refer to
Table 2 .
To provide for this type of discharge, a
separate duct kit cod. 8089904 is sup-
plied. To fit the components of the kit, see
the instructions given under point 2.7.1.
For connection to the boiler and the various
types of discharge modalities, see fig. 8/a.
59
max 3,5 m vers. "25"
max 3 m vers. "30 - 35"
Fig. 8
C12
C32
C42
3
1
2
7
6
4
3
2
min 1
,3 m - max 5 m
8
x
y
x + y = max 3,5 m "25"
x + y = max 3,0 m "30-35"
max 3,5 m "25"
max 3,0 m "30-35"
KEY
1
Coaxial duct kit
cod. 8084811
2 a Extension L. 1000 cod. 8096103
2 b Extension L. 500
cod. 8096102
3 Vertical extension L. 200
cod. 8086908
4 Extra 90° curve
cod. 8095801
6 Articulated tile
cod. 8091300
7 Terminal roof exit
L. 1284 cod. 8091200
8 Vertical condensation recovery
L. 200 cod. 8092803
In discharge types C12-
C42, use diaphragms ø
86 and ø 87.5 only when
the length of the coaxial
duct is less t han 1
meter.
TYPE OF COAXIAL DISCHARGE
IMPORTANT
- The insertion of every extra 90° curve reduces the
available section by 0.90 meters.
- The insertion of every extra 45° curve reduces the
available section by 0.45 meters.
- The insertion of the condensation recovery (8) is
recommended for vertical sections of more than
2.5 meters and limits the max. length to 4 meters.
Min L = 1.3 m Min L = 2.5 m Min L = 4 m Max L = 2.5 m Min L = 2.5 m
Max L = 2.5 m Max L = 4 m Max L = 5 m Max L = 4 m
TABLE 2
Accessories ø 80 Total discharge loss (mm H2O)
25 BF TS 30 BF TS
Aspiration Discharge Roof exit Aspiration Discharge Roof exit
Curve at 90° MF 0,30 0,40 – 0,30 0,45 –
Curve at 45° MF 0,20 0,30 – 0,20 0,35 –
Extension L. 1000 (horizontal) 0,20 0,30 – 0,20 0,35 –
Extension L. 1000 (vertical) 0,30 0,20 – 0,30 0,25 –
Discharge terminal – 0,30 – – 0,35 –
Aspiration terminal 0,10 – – 0,10 – –
Manifold 0,20 – – 0,30 – –
Terminal roof exit L.1390 – – 0,50 – – 0,55
Condensation recovery "T" – 1,00 – – 1,05 –
Example of installation calculation allowed for with model “25 BF TS” since the sum of the
charge loss of the single accessories inserted is less than 7.6 mm H
2
O:
Aspiration Discharge
8 meters of horizontal pipe ø 80 x 0.20 1,60
8 meters of horizontal pipe ø 80 x 0.30 2,40
n° 2 curves 90° ø 80 x 0.30 0,60
n° 2 curves 90° ø 80 x 0.40 0,80
n° 1 terminal ø 80 0,10 0,30
Total loss of charge 2,30 + 3,50 = 5.8 mm H
2
O
With this total charge loss, sectors from number 1 to number 5 must be removed from
the aspiration diaphragm.
Installations with vertical extension
L. 200 cod. 8086908
Installations with condensation
recovery cod.8092803
In discharge type C32, according to the length of the duct and without extra curves,
use ø 86 and ø 87.5 diaphragms as follows:
Diaphragm
ø 86
(cod. 6028623)
Diaphragm
ø 87,5
(cod. 6028624)
Without
diaphragm
Diaphragm
ø 87,5
(cod. 6028624)
Without
diaphragm