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- Position the discharge pipe so that the connection sits fully up against
the fl ue gases turret of the boiler.
- After positioning it, make sure the 4 notches (A) slip into the groove
(B).
- Fully tighten the screws (C) that hold the two fl ange locking terminals,
so the bend itself is restrained held in place.
b
For fumes exhaust lengths, please refer to section 8.9 at
page 94.
B23P-B53P Ø60-100
Ø80-80
B
B
A
C
b
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.
Loss of length (m)
Twin pipes with Ø 80 pipework (Ø50 - Ø60 - Ø80)
Thanks to the boiler characteristics, a Ø80 fl ue 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 confi gurations allowed.
Air suction
Flue gas
Reduction from Ø80 to Ø50 from Ø80 to Ø60
discharge
Flue base bend 90°, Ø50 or Ø60 or Ø80
For ducting pipe lengths see table
The boilers are factory set to:
CH rpm
5.800
6.400
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, referring to paragraph "4.9 Adjustments".
b
The minimum calibration should not be modifi ed.
b
In case of new fan speed adjustment, carry out the CO
procedure as indicated in paragraph "4.8 Combustion analysis".
Adjustment tables INSIDE CHIMNEY PIPES
Ø80-125
B
A
B
Ø 50
Ø 60
Ø 80
5,5 for fl ue gases pipe
0,5
1,2
7,5 for air pipe
1 bend 90° Ø 80
4.5m pipe Ø80
1 bend 90° Ø 80
4.5m pipe Ø80
DHW rpm
max length pipes (m)
Ø50
Ø60
6
19
7.100
1
9
4
16
7.700
0
7
Fan rotations rpm
CH
DHW
5.800
7.100
5.900
7.200
6.000
7.300
6.100
7.400
6.200
7.500
6.300
7.600
6.400
7.700
6.500
7.800
6.400
7.700
6.600
7.900
6.700
8.000
6.800
8.100
6.900
8.200
7.000
8.300
7.100
8.400
7.200
8.500
B
(*) Maximum length that can be installed ONLY with class H1 discharge pipes.
Fan rotations rpm
CH
DHW
5.800
7.100
5.900
7.200
C
6.000
7.300
6.100
7.400
6.200
7.500
6.300
7.600
6.400
7.700
6.500
7.800
6.400
7.700
6.600
7.900
6.700
8.000
6.800
8.100
6.900
8.200
7.000
8.300
7.100
8.400
7.200
8.500
(*)
Maximum length that can be installed ONLY with class H1 discharge pipes.
The Ø50 or Ø60 or Ø80 confi gurations contain Lab test data. In the event of
installations that diff er from the indications in the "standard confi gurations"
and "adjustments" tables, refer to the equivalent linear lengths below.
b
In any case, the maximum lengths declared in the booklet are gua-
ranteed, and it is essential not to exceed them.
COMPONENT
Bend 45°
Bend 90°
Extension 0.5m
Extension 1.0m
Extension 2.0m
3.9
Installation on collective fl ues in positive
pressure
The collective fl ue is a fl ue gas exhaust system suitable for collecting
and expelling the combustion products of several appliances installed
on several fl oors of a building. The positive pressure collective fl ues can
only be used for type C condensing appliances. Therefore the B53P/
Ø80
B23P confi guration is forbidden. The installation of boilers under collective
pressure fl ues is allowed exclusively in G20. The boiler is sized to operate
95
correctly up to a maximum internal pressure of the fl ue no higher than the
value of 25 Pa. Check that the fan speed corresponds to what is shown
in the "technical data" table.
45
Make sure that the air intake and exhaust pipes of the combustion prod-
ucts are watertight.
80
WARNIGS:
b
35
The appliances connected to a collective pipe must all be of the same
b
type and have equivalent combustion characteristics.
The number of devices connected to a positive pressure collective
pipe is defi ned by the fl ue designer.
The boiler is designed to be connected to a collective fl ue sized to op-
erate in conditions where the static pressure of the collective fl ue 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
check
2
boiler at the minimum rated heat input allowed by the controls.
b
The minimum permissible pressure diff erence between the fl ue
gas outlet and the combustion air inlet is -200 Pa (including - 100
Pa of wind pressure).
25
twin fl ue pipe
Pipes Ø50
Pipes Ø60
Pipes Ø80
Maximum length (m)
6
19
95
12 *
33 *
165 *
16 *
39 *
195 *
19 *
46 *
230 *
23 *
53 *
265 *
27 *
61 *
305 *
29 *
67 *
335 *
32 *
73 *
365 *
4
16
80
8 *
26 *
130 *
11 *
32 *
160 *
14 *
38 *
190 *
17 *
44 *
220 *
19 *
50 *
250 *
22 *
56 *
280 *
25 *
62 *
310 *
compact twin fl ue pipe
Pipes Ø50
Pipes Ø60
Pipes Ø80
Maximum length (m)
1
9
45
7 *
23 *
115 *
11 *
29 *
145 *
14 *
36 *
180 *
18 *
43 *
215 *
22 *
51 *
255 *
24 *
57 *
285 *
27 *
63 *
315 *
0
7
35
4 *
17*
85 *
7 *
23 *
115 *
10 *
29 *
145 *
13 *
35 *
175 *
15 *
41 *
205 *
18 *
47 *
235 *
21 *
53 *
265 *
Linear equivalent in metres Ø80 (m)
Ø 50
12,3
19,6
6,1
13,5
29,5
EN
∆P at boiler outlet
(Pa)
180
260
300
342
383
431
465
500
180
260
300
342
383
431
465
500
∆P at boiler outlet
(Pa)
180
260
300
342
383
431
465
500
190
256
300
340
380
417
458
500
Ø 60
5
8
2,5
5,5
12
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