8
b
If a condensate relaunch pump is installed, check the technical
data (provided by the manufacturer) regarding output, to ensure
it operates correctly.
-
Position the discharge pipe so that the connection sits fully up against
the flue 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 flange locking terminals,
so the bend itself is restrained held in place.
b
For fumes exhaust lengths, please refer to section 8.9 at
page 111.
A
A
C
C
B
B
B
B23P-B53P Ø60-100
Ø80-125
B
B
Ø80-80
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.
Ø 50
Ø 60
Ø 80
Loss of length (m)
0,5
1,2
5,5 for flue gases pipe
7,5 for air pipe
Twin pipes with Ø 80 pipework (Ø50 - Ø60 - Ø80)
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.
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 Ø80 to Ø50 from Ø80 to Ø60
Flue base bend 90°, Ø50 or Ø60 or Ø80
For ducting pipe lengths see table
The boilers are factory set to:
CH rpm
DHW rpm
max length pipes (m)
Ø50
Ø60
Ø80
25 KIS
7.000
8.700
6
19
95
1
9
45
30 KIS
6.900
8.300
4
16
80
0
7
35
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 modified
.
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
twin flue pipe
Fan rotations rpm
Pipes Ø50
Pipes Ø60
Pipes Ø80
∆P at boiler outlet
CH
DHW
Maximum length (m)
25 KIS
7.000 8.700
6
19
95
180
7.100 8.800
12 *
33 *
165 *
260
7.200 8.900
16 *
39 *
195 *
300
7.300
9.000
19 *
46 *
230 *
342
7.400
9.100
23 *
53 *
265 *
383
7.500
9.200
27 *
61 *
305 *
431
7.600
9.300
29 *
67 *
335 *
465
7.700
9.400
32 *
73 *
365 *
500
30 KIS
6.900
8.300
4
16
80
180
7.100 8.500
8 *
26 *
130 *
260
7.200 8.500
11 *
32 *
160 *
300
7.300 8.700
14 *
38 *
190 *
342
7.400 8.800
17 *
44 *
220 *
383
7.500 8.900
19 *
50 *
250 *
431
7.600 9.000
22 *
56 *
280 *
465
7.700 9.100
25 *
62 *
310 *
500
(*) Maximum length that can be installed ONLY with class H1 discharge pipes.
compact twin flue pipe
Fan rotations rpm
Pipes Ø50
Pipes Ø60
Pipes Ø80
∆P at boiler outlet
CH
DHW
Maximum length (m)
25 KIS
7.000 8.700
1
9
45
180
7.100 8.800
7 *
23 *
115 *
260
7.200 8.900
11 *
29 *
145 *
300
7.300
9.000
14 *
36 *
180 *
342
7.400
9.100
18 *
43 *
215 *
383
7.500
9.200
22 *
51 *
255 *
431
7.600
9.300
24 *
57 *
285 *
465
7.700
9.400
27 *
63 *
315 *
500
30 KIS
6.900
8.300
0
7
35
190
7.100 8.500
4 *
17*
85 *
256
7.200 8.500
7 *
23 *
115 *
300
7.300 8.700
10 *
29 *
145 *
340
7.400 8.800
13 *
35 *
175 *
380
7.500 8.900
15 *
41 *
205 *
417
7.600 9.000
18 *
47 *
235 *
458
7.700 9.100
21 *
53 *
265 *
500
(*) 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 configu
-
rations” 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.
3.9
COMPONENT
Linear equivalent in metres Ø80 (m)
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
Installation on collective flues in positive
pressure
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 con
-
densing appliances. Therefore the B53P/B23P configuration is forbid
-
den. 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 prod-
ucts are watertight.
WARNIGS:
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 op
-
erate 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.
