(C) IDM Energiesysteme GmbH
Installation instructions AERO ILM
23
Installation
Relevant place of Immission
.
The sound immission have to be determined 0.5 m
in the middle in front of the open window (outside the
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-
ticular protection. According DIN 4109:1989 rooms
needing particular protection are:
• living- and bed rooms
• children rooms
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• classrooms/seminar rooms
Rating level Lr
.
The rating level corresponds to an equivalent conti-
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period. The rating level is determined for both rating
periods „day“ (6am-10pm) and „night“ (10pm-6am)
separately. The operation time of the heat pump has
particular impact on the resulting equivalent conti-
nuous sound pressure level. Reducing the operation
time from 16 h per day to 4 h per day the rating level
is reduced by 6 dB(A).
But the equivalent continuous sound pressure level
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disruptive, if individual tones are clearly discernable
or the noise is irregular (impulsiveness). These noise
characteristics will be taken into account by applying
a surcharge. Additionally, daytimes with increased
sensitivity are taken into consideration. According the
„TA Lärm“ the following corrections are applied:
information incorporation
0.3 or 6 dB
impulsiveness
0.3 or 6 dB
daytimes with increased
sensitivity
6 dB
The rating level Lr shall be obtained by summing the
calculated immission level and the applied correc-
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Finally, the determined rating level can be compared
with legal limit values (e.g. „TA Lärm“).
Standard Immission Values (SIV) - relevant place of
immission outside the building:
Territory
SIV-day
SIV-night
Industrial area
70 dB(A)
70 dB(A)
business park,
commercial areas
65 dB(A)
50 dB(A)
village areas and mixed
areas
60 dB(A
45 dB(A)
settlement area
55 dB(A)
40 dB(A)
residential area
50 dB(A)
35 dB(A)
spa area, hospitals
45 dB(A)
35 dB(A)
In case of sound propagation inside buildings or
structure-borne sound transmission the Standard Im-
mission Values for the rating level of rooms needing
particular protection are as following:
SIV - day:
35 dB(A)
SIV - night:
25 dB(A)
For the calculation of the rating level according „TA
Lärm“ a calculation tool is provided at the homepage:
http://www.idm-energie.com
Tips for the installation of heat pumps
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possible
• The installation on acoustically hard ground and
areas with depression in the terrain should be
avoided
• The distance from the heat pump and the relevant
place of immission should be as big as possible
• In case of outdoor installation the blow out of air
in direction to the neighbour or relevant receiver
location should be avoided
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pressure levels accordingly.