Additional Devices For Sound Insulation; Requirements; Burner Silencer Hood; Flue Gas Silencer (Round) With Sealing Collar For Structure-Borne Noise Separation - Buderus Logano GE315 Technical Manual

8.6 Additional devices for sound
insulation
8.6.1

Requirements

The necessity and scope of measures for sound insulation
are based on the sound level and the noise disturbance
this causes. Buderus offers three devices that are
specially adapted to the Ecostream cast iron boilers,
which can be supplemented with additional on-site sound
insulation measures.
On-site measures include fixing the pipework to attenuate
structure-borne noise, compensators in the connection
lines and flexible connections with the building. The
devices for sound insulation require extra space, which
should be factored in at the planning stage.
8.6.2

Burner silencer hood

The airborne noise created by the burner during operation
can be attenuated with a burner silencer hood. This can
reduce the sound pressure level in the installation room by
approx. 10 dB(A) to 15 dB(A), depending on the version.
Matching burner silencer hoods are sold by Buderus as
accessories or by the burner manufacturers. The
selection of a suitable burner silencer hood can be
discussed in detail with the Buderus sales office (
cover) or with the burner manufacturer.
When designing the installation room, allow extra space
to remove the silencer hood.
8.6.3 Flue gas silencer (round) with sealing collar
for structure-borne noise separation
A large proportion of the noise caused by combustion can
be transferred via the flue system to the building. Specially
adapted flue gas silencers can significantly reduce the
sound level ( Tab. 37, page 68).
For example, the flue gas silencer shown (
achieves attenuation of approx. 10 dB(A) to 15 dB(A) in
the flue pipe. The pressure drop in the flue gas silencer
can be ignored when sizing the flue system.
The flue gas silencer has a connector (
and a special sealing collar (
flue pipe graded sealing collar and the additional packing
cord provide separation of the structure-borne noise
between the boiler and flue system (connection piece).
6 720 646 864 (12/2010) – Technical guide Logano GE315, GE515 and GE615
back
Fig. 50)
Fig. 50, pos. 2)
Fig. 50, item 3+4). This
Fig. 49 Flue gas silencer made of steel (round)
4 3
L4
L 2
L1
Fig. 50 Flue gas silencer with sealing collar for
structure-borne noise separation for Logano
GE315, GE515 and GE615 (schematic)
1 Flue pipe sealing collar
2 Threaded female connection for pipe connector
3 Packing cord
4 Flue pipe graded sealing collar
L [dB(A)]
D
30
25
20
15
10
5
0
10
Fig. 51 Flue gas silencer made of steel (round)
f Frequency
L Attenuation
D
Installation
6 720 644 097-47.1il
1
2
L 3
6 720 644 097-48.1il
100
1000
f [Hz]
6 720 644 097-49.1il
8
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