Ferroli DIVAtop ST F Instrucciones De Uso página 38

3.6 air/fumes
Warnings
The unit is "type C" with an airtight chamber and forced draught, the air inlet and fume
outlet must be connected to one of the following extraction/suction systems. The unit is
type-approved to work with all the Cxy flue configurations stated on the technical data
plate (some setups are given by way of example in this chapter). It is however possible
that some setups are expressly limited or not permitted by law, standards or local regu-
lations. Before proceeding with installation, check and meticulously observe the above-
mentioned prescriptions. In addition, comply with the provisions concerning the position-
ing of wall and/or roof end pieces and the minimum distances from windows, walls, ven-
tilation openings, etc.
B
This C-type unit must be installed using the fume extraction and outlet ducts
supplied by the manufacturer in accordance with UNI-CIG 7129/92. Failure to
use them automatically forfeits all warranty and liability of the manufacturer.
Expansion
For fume exhaust pipes longer than 1 metre, during installation take in account
A
the natural expansion of the materials when the boiler is operating.
To prevent any deformation, leave an expansion space of approx. 2 ÷ 4 mm for
every metre of pipe.
Modulating fan
The unit has an advanced air / fumes flow control system, with modulating fan and pres-
sure sensor.
With this device the unit automatically adapts its operation to the flue type and length,
without requiring adjustments during installation or the use of baffles in the combustion
circuit.
Moreover, in daily operation the unit constantly and automatically regulates the air /
fume flow according to the change in thermal load. In this way, combustion and heat ex-
change always occur in optimum conditions and the unit's thermal efficiency remains
high throughout its power range.
Connection with coaxial pipes
fig. 20 - Examples of connection with coaxial pipes (
For coaxial connection, fit the unit with one of the following starting accessories. For the
wall hole dimensions, refer to the figure on the cover. Any horizontal sections of the fume
exhaust must be kept sloping slightly towards the outside, to prevent possible conden-
sate from flowing back towards the unit.
100
60
010006X0 010018X0
fig. 21 - Starting accessories for coaxial ducts
Before proceeding with installation, check that the maximum permissible length is not
exceeded, bearing in mind that every coaxial bend gives rise to the reduction indicated
in the table. For example, a Ø 60/100 duct comprising a 90° bend + 1 horizontal metre
has a total equivalent length of 2 metres.
Table. 2 - Max. length coaxial ducts
Max. permissible length
Reduction factor 90° bend
Reduction factor 45° bend
38
EN
= Air /
125
80
010007X0
Coaxial 60/100 Coaxial 80/125
5 m 10 m
1 m 0.5 m
0.5 m 0.25 m
cod. 354
Connection with separate pipes
C
52
fig. 22 - Examples of connection with separate pipes (
For connection of the separate ducts, fit the unit with the following starting accessory:
fig. 23 - Starting accessory for separate ducts
Before proceeding with installation make sure the maximum permissible length has not
been exceeded, by means of a simple calculation:
1. Completely establish the layout of the system of split flues, including accessories
and outlet terminals.
2. Consult the table 4 and identify the losses in m
ponent, according to the installation position.
3. Check that the sum total of losses is less than or equal to the maximum permissible
length in table 3.
Table. 3 - Max. length for separate ducts
= Fumes)
Max. permissible length
Table. 4 - Accessories
Ø 80 PIPE 0.5 m M/F
BEND 45° F/F
PIPE SECTION with test point
TEE for condensate drain
TERMINAL air, wall
FLUE Split air/fumes 80/80
Ø 100 REDUCTION from Ø80 to Ø100
PIPE 1 m M/F
BEND 45° M/F
TERMINAL air, wall
- Rev. 00 - 09/2013
DIVAtop ST F
80
010011X0
(equivalent metres) of every com-
eq
DIVAtop ST 24 F
60 m
1KWMA38A
1 m M/F 1KWMA83A
2 m M/F 1KWMA06K
1KWMA01K
45° M/F 1KWMA65A
90° F/F 1KWMA02K
90° M/F 1KWMA82A
90° M/F + Test point 1KWMA70U
1KWMA16U
for condensate drain 1KWMA55U
1KWMA05K
1KWMA85A
fumes, wall with antiwind 1KWMA86A
1KWMA84U
Fume outlet only Ø80 1KWMA83U +
1KWMA86U
1KWMA03U
from Ø100 to Ø80
1KWMA08K
1KWMA03K
90° M/F 1KWMA04K
1KWMA14K
fumes, wall with antiwind 1KWMA29K
B C
22 12
= Air / = Fumes)
80
Separate ducts
DIVAtop ST 32 F
48 m
eq eq
Losses in m
eq
Air Fume exhaust
inlet
Vertical Horizontal
0.5 0.5 1.0
1.0 1.0 2.0
2.0 2.0 4.0
1.2 2.2
1.2 2.2
2.0 3.0
1.5 2.5
1.5 2.5
0.2 0.2
- 3.0
- 7.0
2.0 -
- 5.0
- 12.0
- 4.0
0.0 0.0
1.5 3.0
0.4 0.4 0.8
0.6 1.0
0.8 1.3
1.5 -
- 3.0