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Subject to change without notice | 83051400cUK – Translation into English of the original German operating manual | ait-deutschland GmbH
The directivity factor Q for the different installation var-
iants:
Q = 2
Q = 4
Q = 8
In case of 2 or more units of the same heat pump type,
the respective level increase must be added to the corre-
sponding sound pressure level from the following table
Number of n equally
loud sound sources
Level increase
∆ L in dB
1
0,0
2
3,0
3
4,8
4
6,0
5
7,0
6
7,8
7
8,5
8
9,0
9
9,5
10
10,0
12
10,8
In case of different, not equally loud units, the level in-
crease is read off the following diagram:
Le
ve
l i
nc
re
as
e i
n d
B
Level difference in dB
Example: If the level difference between two unequal
sound sources is 5 dB, the level increase is an addition-
al 1.2 dB.
INSTALLATION
Place the unit on a solid, level foundation that is capable
of bearing weight. Make sure that the foundation is de-
signed for the weight of the heat pump. Materials that
meet this requirement can be used for the foundation
(concrete, stone slabs, etc.). The ground surface in the
air outlet area of the heat pump must be permeable to
water.
ATTENTION
In the air outlet area the air temperature is ca.
5 K below the ambient temperature. Under cer-
tain climatic conditions, therefore, an ice layer
can form in the air outlet area.
Install the heat pump so that the air blower does
not blow in the direction of footpaths.
WARNING!
Several people are required to install the
unit.
NOTICE
Always comply with the installation plan for the
respective model. Adhere to the size and mini-
mum clearances.
Installation plan for respective model.
NOTICE
Set up the unit so that the switch cabinet side (=
operating side) is accessible at all times.
