ENGLISH
7
b
Make sure the flue gas discharge pipe is tilted 3° towards the boiler.
b
The exhaust pipes can face in the direction most suited to the installation
requirements.
b
As envisaged by current legislation, the boiler is designed to take in and dispose of
flue gas condensate and/or meteoric water condensate deriving from the flue gas
discharge system using its own siphon.
b
If a condensate relaunch pump is installed, check the technical data (provided by the
manufacturer) regarding output, to ensure it operates correctly.
“Forced open” installation (B23P-B53P) (Fig.14)
In this configuration the boiler is connected to the ø 80 mm flue gases discharge pipe by
means of an adaptor.
-
Position the adaptor so that the Ø 60 pipe goes fully into the flue gases turre
t of the boiler.
-
Once positioned, make sure that the 4 notches (
A
) on the flange connect to the groove
(
B
) on the Ø 100 of the adaptor.
-
Fully tighten the screws (
C
) that tighten the two locking terminals of the flange so the
adaptor itself is restrained.
Coaxial pipes (ø 60-100 mm) (Fig. 15)
-
Position the bend so that the Ø 60 pipe goes fully up against the flue gases turret of the boiler.
-
Once positioned, make sure that the 4 notches (
A
) on the flange connect to the groove
(
B
) on the Ø 100 of the bend.
-
Fully tighten the screws (
C
) that tighten the two locking terminals of the flange so the
bend itself is restrained.
Twin pipes (ø 80 mm) (Fig. 16)
The combustion air suction pipe should be selected from the two inputs, remove the closing
plug fixed with the screws and fix the specific air deflector.
-
Position the adaptor on the flue gases pipe so that the Ø 60 pipe goes fully u
p against
the flue gases turret of the boiler.
-
Once positioned, make sure that the 4 notches (
A
) on the flange connect to the groove
(
B
) on the Ø 100 of the adaptor.
-
Fully tighten the screws (
C
) that tighten the two locking terminals of the flange so the
adaptor itself is restrained.
If the Ø 60-100 to Ø 80-80 splitter kit is used instead of the twin pipe system, there is a loss
in the maximum lengths as shown in the table.
-
Pla
ce the splitter so that the Ø 60 pipe goes fully up against the flue gases turr
et of the boiler.
-
On
ce positioned, make sure that the 4 notches (
A
) on the flange connect to the
groove
(
B
) on the Ø 100 of the splitter.
-
Fully
tighten the screws (
C
) that tighten the two locking terminals of the flang
e so the
adaptor itself is restrained.
Ø50
Ø60
Ø80
Loss of length (m)
0.5
1.2
5.5 for flue gases pipe
7.5 for air pipe
Coaxial pipes (ø 80-125 mm) (Fig. 17)
-
Place the adaptor vertical attachment so that the Ø 60 pipe goes fully up against the flue
gases turret of the boiler.
-
Once positioned, make sure that the 4 notches (
A
) on the flange connect to the groove
(
B
) on the Ø 100 of the adaptor.
-
Fully tighten the screws (B) that tighten the two locking terminals of the flange so the
adaptor itself is restrained.
-
Then fit the Ø 80-125 adaptor kit on the vertical fitting.
Twin pipes with Ø 80 pipework Ø50 - Ø60 - Ø80) (Fig. 18)
Thanks to the boiler characteristics, a Ø80 flue gas exhaust pipe can be connected to
the Ø50 - Ø60 - Ø80 piping ranges.
b
For the pipe, you are advised to make a project calculation in order to respect the
relevant regulations in force.
The table shows the standard configurations allowed.
Table of standard pipe configuration (*)
Air suction
1 Bend 90° Ø 80
4.5m pipe Ø80
Flue gas discharge
1 Bend 90° Ø 80
4.5m pipe Ø80
Reduction from
Ø
80 to
Ø
50 from
Ø
80 to
Ø
60
Flue base bend 90°, Ø
50 or
Ø
60 or
Ø
80
For ducting pipe lengths see table
(*) Use flue gas system accessories made of plastic (PP) for condensing boilers: Ø50
and Ø80 class H1 and Ø60 class P1.
The boilers are factory set to:
25 KIS:
6,200 r.p.m. in heating mode and 7,600 in domestic hot water mode and the maxi
-
mum length that can be reached is 5m for the
Ø 50 pipe, 18m for the Ø 60 pipe and 98m
for the
Ø
80 pipe.
30 KIS:
5,800 rpm in heating mode and 6,900 in domestic hot water mode, and the maxi
-
mum length that can be reached is 2m for the
Ø50, 11m for the Ø
60 pipe and 53m for the
Ø
80 pipe.
35 KIS:
6,900 rpm in heating mode and 7,800 in domestic hot water mode, and the maxi
-
mum length that can be reached is 2m for the
Ø50 pipe, 11m for the Ø
60 pipe and 57m for
the
Ø
80 pipe.
Should greater lengths be required, compensate the pressure drop with an increase in the
r.p.m.of the fan, as shown in the adjustments table, to provide the rated heat input.
b
The minimum calibration should not be modified.
Table of adjustments
Fan rotations
r.p.m.
Pipework ducts
ΔP at boiler
outlet
Maximum length [m]
Heating
DHW
Ø 50
Ø 60
Ø 80
Pa
25 KIS
6,200
7,600
5
18
98
174
6,300
7,700
7 (*)
23 (*)
125 (*)
213
6,400
7,800
9 (*)
28 (*)
153 (*)
253
6,500
7,900
11 (*)
33 (*)
181 (*)
292
6,600
8,000
13 (*)
38 (*)
208 (*)
332
6,700
8,100
15 (*)
43 (*)
236 (*)
371
6,800
8,200
17 (*)
48 (*)
263 (*)
410
6,900
8,300
19 (*)
53 (*)
291 (*)
450
7,000
8,400
22 (*)
58 (*)
319 (*)
489
7,100
8,500
24 (*)
63 (*)
346 (*)
528
30 KIS
5,800
6,900
2
11
53
150
5,900
7,000
4
15
73
189
6,000
7,100
5 (*)
19 (*)
93 (*)
229
6,100
7,200
7 (*)
24 (*)
113 (*)
268
6,200
7,300
9 (*)
28 (*)
133 (*)
308
6,300
7,400
10 (*)
32 (*)
153 (*)
347
6,400
7,500
12 (*)
36 (*)
173 (*)
386
6,500
7,600
14 (*)
40 (*)
193 (*)
426
6,600
7,700
16 (*)
44 (*)
214 (*)
465
6,700
7,800
17 (*)
49 (*)
234 (*)
504
35 KIS
6,900
7,800
2
11
57
190
7,000
7,900
3 (*)
15 (*)
75 (*)
229
7,100
8,000
4 (*)
19 (*)
93 (*)
269
7,200
8,100
6 (*)
22 (*)
112 (*)
308
7,300
8,200
7 (*)
26 (*)
130 (*)
348
7,400
8,300
9 (*)
30 (*)
148 (*)
387
7,500
8,400
10 (*)
33 (*)
166 (*)
426
7,600
8,500
12 (*)
37 (*)
184 (*)
466
7,700
8,600
13 (*)
40 (*)
202 (*)
505
7,800
8,700
15 (*)
44 (*)
220 (*)
544
(*) Maximum length that can be installed ONLY with class H1 discharge pipes.
The Ø50 or Ø60 or Ø80 configurations contain Lab test data. In the event of installations that
differ from the indications in the “standard configurations” and “adjustments” tables, refer to
the equivalent linear lengths below.
b
In any case, the maximum lengths declared in the booklet are guaranteed, and it is
essential not to exceed them.
Linear equivalent in metres Ø80 (m)
COMPONENT
Ø 50
Ø 60
Bend 45°
12.3
5
Bend 90°
19.6
8
Extension 0.5m
6.1
2.5
Extension 1.0m
13.5
5.5
Extension 2.0m
29.5
12
3.14
Installation on collective flues in positive pressure (fig.
18a-18b-18c)
The collective flue is a flue gas exhaust system suitable for collecting and expelling the
combustion products of several appliances installed on several floors of a building.
The positive pressure collective flues can only be used for type C condensing appliances.
Therefore the B53P/B23P configuration is forbidden. The installation of boilers under
collective pressure flues is allowed exclusively in G20. The boiler is sized to operate
correctly up to a maximum internal pressure of the flue no higher than the value of 25 Pa.
Check that the fan speed corresponds to what is shown in the “technical data” table.
Make sure that the air intake and exhaust pipes of the combustion products are watertight.
WARNINGS:
b
The appliances connected to a collective pipe must all be of the same type and have
equivalent combustion characteristics.
b
The number of devices connected to a positive pressure collective pipe is defined
by the flue designer
.
The boiler is designed to be connected to a collective flue sized to operate in conditions
where the static pressure of the collective flue pipe can exceed the static pressure of the
collective air duct of 25 Pa in the condition in which n-1 boilers work at maximum rated heat
input and 1 boiler at the minimum rated heat input allowed by the controls.
b
The minimum permissible pressure difference between the flue gas outlet and the
combustion air inlet is -200 Pa (including - 100 Pa of wind pressure).
For both types of exhaust, further accessories are available (curves, extensions, terminals,
etc.) which make possible the flue gas exhaust configurations foreseen in the boiler booklet.
b
The pipes must be installed in such a way as to avoid condensation sticking which
would prevent the correct evacuation of the combustion products.
