Beretta MYNUTE X C Installer And User Manual page 7

b
The maximum lengths of the pipes refer to the flue accessories available in the
catalogue.
b
It is compulsory to use specific pipes.
b
The non insulated flue gas outlet pipes are potential sources of danger.
b
The use of a longer pipe causes a loss of output of the boiler.
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.13)
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 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.
Coaxial pipes (ø 60-100 mm) (Fig. 14)
- 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. 15)
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 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 (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 (fig. 15a).
- Place the splitter 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 splitter.
- Fully tighten the screws (C) that tighten the two locking terminals of the flange so the
adaptor itself is restrained.
Loss of length (m)
Coaxial pipes (ø 80-125 mm) (Fig. 16)
- 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 (C) 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. 17)
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 (*)
1 Bend 90° Ø 80
Air suction
4.5m pipe Ø80
1 Bend 90° Ø 80
4.5m pipe Ø80
Flue gas discharge Reduction from Ø80 to Ø50 from Ø80 to Ø60
Flue base bend 90°, Ø50 or Ø60 or Ø80
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:
25C: 6,200 r.p.m. in heating mode and 7,600 in domestic hot water mode and the maximum
attainable length is 5m for Ø 50 pipe, 18m for Ø 60 pipe and 98m for Ø 80 pipe.
Ø50 Ø60 Ø80
5.5 for flue gases pipe
0.5 1.2
7.5 for air pipe
30C: 5,800 rpm in heating mode and 6,900 in domestic hot water mode, and the maximum
length that can be reached is 2m for Ø50, 11m for Ø60 pipe and 53m for Ø80 pipe.
35C: 6,900 rpm in heating mode and 7,800 in domestic hot water mode, and the maximum
length that can be reached is 2m for Ø50 pipe, 11m for Ø60 pipe and 57m for Ø80 pipe.
40C: 6,900 rpm in heating mode and 9,100 in domestic hot water mode, and the maximum
length that can be reached is 7m for Ø60 pipe and 42m for Ø80 pipe (not applicable for
Ø50 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.
Heating DHW
6,200 7,600
6,300 7,700
6,400 7,800
6,500 7,900
6,600 8,000
25C
6,700 8,100
6,800 8,200
6,900 8,300
7,000 8,400
7,100 8,500
5,800 6,900
5,900 7,000
6,000 7,100
6,100 7,200
6,200 7,300
30C
6,300 7,400
6,400 7,500
6,500 7,600
6,600 7,700
6,700 7,800
6,900 7,800
7,000 7,900
7,100 8,000
7,200 8,100
7,300 8,200
35C
7,400 8,300
7,500 8,400
7,600 8,500
7,700 8,600
7,800 8,700
6,900 9,100
7,000 9,200
7,100 9,300
7,200 9,400
7,300 9,500
40C
7,400 9,600
7,500 9,700
7,600 9,800
7,700 9,900
7,800 10,000
(*) 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.
Bend 45°
Bend 90°
Extension 0.5m
Extension 1.0m
Extension 2.0m
Pipework ducts
Maximum length [m]
Ø 50 Ø 60 Ø 80
5 18 98
7 (*) 23 (*) 125 (*)
9 (*) 28 (*) 153 (*)
11 (*) 33 (*) 181 (*)
13 (*) 38 (*) 208 (*)
15 (*) 43 (*) 236 (*)
17 (*) 48 (*) 263 (*)
19 (*) 53 (*) 291 (*)
22 (*) 58 (*) 319 (*)
24 (*) 63 (*) 346 (*)
2 11 53
4 15 73
5 (*) 19 (*) 93 (*)
7 (*) 24 (*) 113 (*)
9 (*) 28 (*) 133 (*)
10 (*) 32 (*) 153 (*)
12 (*) 36 (*) 173 (*)
14 (*) 40 (*) 193 (*)
16 (*) 44 (*) 214 (*)
17 (*) 49 (*) 234 (*)
2 11 57
3 (*) 15 (*) 75 (*)
4 (*) 19 (*) 93 (*)
6 (*) 22 (*) 112 (*)
7 (*) 26 (*) 130 (*)
9 (*) 30 (*) 148 (*)
10 (*) 33 (*) 166 (*)
12 (*) 37 (*) 184 (*)
13 (*) 40 (*) 202 (*)
15 (*) 44 (*) 220 (*)
not applicable 7 42
not applicable (*) 10 (*) 60 (*)
1 (*) 13 (*) 78 (*)
3 (*) 16 (*) 96 (*)
4 (*) 19 (*) 114 (*)
5 (*) 23 (*) 138 (*)
7 (*) 26 (*) 156 (*)
8 (*) 29 (*) 174 (*)
9 (*) 32 (*) 192 (*)
10 (*) 35 (*) 210 (*)
Linear equivalent in metres Ø80 (m)
COMPONENT Ø 50 COMPONENT Ø 60
12.3
19.6
6.1
13.5
29.5
ENGLISH
ΔP at boiler
outlet
Pa
174
213
253
292
332
371
410
450
489
528
150
189
229
268
308
347
386
426
465
504
190
229
269
308
348
387
426
466
505
544
196
235
275
314
354
393
432
472
511
550
5
8
2.5
5.5
12
7