Separate Ducts - Sime benchmark FRIENDLY FORMAT Installation And Servicing Instrucnions

– Secure the elbow onto the top of the appliance using the
four screws and washers provided, and refit the sealed
chamber front panel.
3.6

SEPARATE DUCTS

(Optional alternative twin pipe system)
When installing the separate ducts, comply with the require-
ments of the current standards, as well as the following prac-
tical pointers:
– The temperature on the surface of the discharge pipe, in
the portions that pass through masonry and/or come into
contact with walls should not exceed room temperature by
more than 60°C (pr EN 483).
– With direct intake from outside, when the pipe is longer
than 1 m, you are recommended to insulate the piping so
as to prevent formation of dew on the outside of the piping
during particularly cold periods of the year.
– With the outlet pipe outside the building or in cold indoor
environments, insulation is necessary to prevent burner
ignition failure.
In such cases, provide for condensate drainage.
The maximum overall length of the intake and exhaust ducts
depends on the head losses of the single fittings installed
(excluding the adaptors) and must not be greater than 7.00
mm H O ("80 - 80 E" models) and 11.00 mm H
2
model). For head losses in the fittings, refer to Table 8 .
Example of allowable installation calculation ("FRIENDLY
FORMAT 80 - 80 E" models) in that the sum of the head
losses of the single fittings is less than 7.00 mm H
7 meter horizontal pipe ø 80 x 0.20
7 meter vertical pipe ø 80 x 0.30
n° 2 90° elbows ø 80 x 0.30
n° 2 90° elbows ø 80 x 0.40
N° 1 terminal ø 80
Total head loss
With this total head loss, remove the ø 38 baffle from the
intake pipe.
TABLE 8
Accessories ø 80
90° elbow MF
45° elbow MF
Extension L. 1000 (horizontal)
Extension L. 1000 (vertical)
Outlet terminal
Intake terminal
Doubler fitting
Roof outlet terminal L. 1 240
Tee condensation outlet
O ("100 E"
2
O:
2
Intake Outlet
1.40 –
– 2. 1 0
0.60 –
– 0.80
0. 1 0 0.30
2. 1 0 + 3.20
= 5.3 mm H O
2
"FRIENDLY FORMAT 80 - 80 E"
Inlet Outlet
0,30 0,40
0,20 0,30
0,20 0,30
0, 1 0 0,20
– 0,30
0, 1 0 –
0,50 1,50
– –
– 0,90
3.6. 1 Separate flue accessories
Part No 8093000 is supplied for this purpose (fig. 14).
The sectored diaphragm is to be used according to the max-
imum head loss allowed in both pipes, as given in fig. 15. The
complete range of accessories necessary for satisfying all
installation requirements is shown in fig. 16.
KEY
1 Sponge-rubber gasket ø125/95
2 Fixing screw
3 Air-smokes flow splitting unit
with take-off point
4 Sectors diaphragm ø 38
Head loss (mm H O)
2
"FRIENDLY FORMAT 100 E"
Roof outlet Inlet
– 0,30
– 0,20
– 0,20
– 0, 1 0
– –
– 0, 1 0
– 0,50
0,50 –
– –
=
=
120
Outlet Roof outlet
0,50 –
0,40 –
0,40 –
0,30 –
0,40 –
– –
1,80 –
– 0,60
1, 1 0 –
Fig. 14
11