ENGLISH
8
b
Arrange the flue gas discharge pipe so it slopes by 3° towards
the boiler.
b
The boiler automatically adapts the purging to the type of
installation and the length of the pipe.
Maximum length of the flue gas
discharge pipe Ø 80 mm
Pressure loss
45° curve
90° curve
20 R.S.I.
80 m
1 m
1.5 m
“AIRTIGHT” INSTALLATION (TYPE C)
The boiler must be connected to concentric or twin flue gas discharge
pipes and air suction pipes, both leading outdoors. The boiler must
not be operated without them.
Concentric pipes (Ø 60-100 mm) (Fig. 13)
The concentric pipes can be fitted in most suitable direction in
relation to installation requirements complying with the maximum
lengths show on the table.
b
Arrange the flue gas discharge pipe so it slopes by 3° towards
the boiler.
b
Non-insulated outlet pipes are potential sources of danger.
b
The boiler automatically adapts the purging to the type of
installation and the length of the pipe.
b
Do not obstruct or choke the combustion air suction pipe in any
way.
For installation, follow the instructions supplied with the kit.
Horizontal
Max straight length of concentric
pipe Ø 60-100 mm
Pressure loss
45° curve
90° curve
20 R.S.I.
7.8 m
1.3 m
1.6 m
Vertical
Max straight length of concentric
pipe Ø 60-100 mm
Pressure loss
45° curve
90° curve
20 R.S.I.
8.8 m
1.3 m
1.6 m
Concentric pipes (Ø 80-125 mm) (Fig. 14)
For this configuration the specific adaptor kit must be installed. The
concentric pipes can be fitted in most suitable direction in relation
to installation requirements. For installation, follow the instructions
supplied with the specific kits for condensing boilers.
Maximum straight length of
concentric pipe Ø 80-125 mm
Pressure loss
45° curve
90° curve
20 R.S.I
20 m
1 m
1.5 m
Twin pipes (Ø 80 mm) (Fig. 15)
The twin pipes can face in the direction most suitable for installation
requirements.
For installation, follow the instructions supplied with
the specific accessory kit for condensation boilers.
b
Arrange the flue gas discharge pipe so it slopes by 3° towards
the boiler.
b
The boiler automatically adapts the purging to the type of
installation and the length of the pipes. Do not obstruct or choke
the pipes in any way.
b
For the maximum length indications of the individual pipe see
the graphic (fig. 16).
b
The use of longer pipes reduces the boiler output.
Maximum straight length
of twin pipe Ø 80 mm
Pressure loss
45° curve
90° curve
20 R.S.I.
50+50 m
1 m
1.5 m
Ø 80 twin pipes with Ø 50, Ø 60, Ø 80 pipework (Fig. 17)
The characteristics of the boiler allow the Ø 80 flue gas discharge
pipe to be connected to the Ø 50, Ø 60
and
Ø 80 range of pipework.
b
For the pipework we recommend carrying out a design
calculation in order to comply with the applicable prevailing
standards.
The allowed base configurations are indicated in the table.
Base pipe configuration table (*)
Air suction
1 90° ø 80 curve
4.5 m ø 80 pipe
Flue gas exhaust
1 90° ø 80 curve
4.5 m ø 80 pipe
Reduction from ø 80 to ø 50 or ø 80 to ø 60
flue base curve 90° ø 50 or ø 60 or ø 80
for pipework pipe lengths see the table
(*) Use the plastic (PP) flue accessory systems for condensing
boilers that can be found on the residential catalogue price list, ø 50
H1 class and ø 60 P1 class.
The boilers leave the factory regulated to:
20 R.S.I.:
4.500 r.p.m. for domestic hot water and for heating and the
maximum achievable length is 2m for the pipe ø 50, 10m for the pipe
ø 60 and 80m for the pipe ø 80.
If you need to reach greater lengths compensate for the pressure
drop with an increase of the number of fan rotations as shown in the
adjustments table in order to guarantee the rated heat input.
b
The minimum calibration must not be modified.
If the prevailing value is greater than 200 Pa the law requires the use
of H1 pressure class flue accessories.
MySMART R.S.I. adjustments table
Maximum
number of fan
rotations
rpm
Ø 50
pipework
pipes
maximum
length
Ø 60
pipework
pipes
maximum
length
Ø 80
pipework
pipes
maximum
length
ΔP at the
boiler
output with
max length
DHW
CH
m
m
m
Pa
4.500
4.500
2
10
80
70
4.600
4.600
4
14
90
90
4.700
4.700
6
20
108
120
4.800
4.800
8
25
136
146
4.900
4.900
11 (*)
30 (*)
165 (*)
172
(*) Maximum installable lenght ONLY with exhaust pipes in H1 class
NOTE
If pipes different than those in the Beretta catalogue are used you must
see the ΔP values on the above tables to calculate the maximum length
of the pipes.
The Ø 60 and Ø 50 configurations have experimental, laboratory checked
data.
In the event of installations other than those indicated in the “base
configurations” and “adjustments” table, see the equivalent Ø 80 - Ø
60 or Ø 50 linear lengths shown below.
b
In any case the maximum lengths declared in the booklet are
guaranteed and it is essential that they are not exceeded.
Ø 60 component
Linear equivalent in
metres Ø 80 (m)
45° Ø 60 curve
5
90° Ø 60 curve
8
0.5 m Ø 60 extension
2.5
1.0 m Ø 60 extension
5.5
2.0 m Ø 60 extension
12
Ø 50 COMPONENT
Linear equivalent in
metres Ø 80 (m)
45° Ø 50 curve
12,3
90° Ø 50 curve
19,6
0.5 m Ø 50 extension
6,1
1.0 m Ø 50 extension
13,5
2.0 m Ø 560 extension
29,5
