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5.2.3 Acoustic Dispersion with Heat Exchanger (RBS 2106)
The cabinet noise dispersion for an RBS 2106 with Heat Exchanger Climate
Unit is shown in the tables below. The figures and tables show the noise
dispersion generated by a free-standing cabinet and by a cabinet mounted
against a wall.
Note: The acoustic noise dispersion values for a free-standing cabinet
and a cabinet installed against a wall were tested according to
the ISO 9614-2 standard. Deviations from these values can be
experienced due to the nature of materials in the environment where
the cabinet is installed. Objects near the cabinet can reflect or absorb
sound and thus affect acoustic dispersion.
The following two tables show the sound pressure levels, calculated at the
bystander position at a distance of 1 metre from the cabinet and 1.5 metre
above the floor. The calculations are valid in free field. If the RBS is placed in a
room the sound pressure level will be higher than indicated in the tables below.
Table 10 Sound Pressure Level, Bystander Position without Sound Hood
Sound Pressure Level at the Bystander Position at a
Distance of one metre, L
pA
dB
Operating
Condition
Front Left Right Back
15
C
49 47 47 45
20
C
55
52 52 48
25
C
59 56 56 52
30
C
62 59 59 53
Table 11 Sound Pressure Level, Bystander Position with Sound Hood
Sound Pressure Level at the Bystander Position at a
Distance of one Metre, L
pA
dB
Operating
Condition
Front Left Right Back
15
C
45 45 44 45
20
C
48 48 48 47
25
C
51 50 50 50
30
C
53 52 52 51
The following figures and tables show the noise dispersion for different ambient
temperature and at different distances from the cabinet.