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MEES19K187
PQ
RY-
P
-Z(
S
)LMU
-A1
285
5. SOUND LEVELS
WR2-Series-575V
 Depending on the operation conditions, the unit generates noise caused by valve actuation, refrigerant flow, and
pressure changes when operating normally. Please consider to avoid location where quietness is required.
For BC controller, it is recommended to be installed in places such as ceilings of corridor, rest rooms and plant rooms.
Measurement condition
PQRY-P288, 312, 336ZSLMU-A1
Measurement
location
3-1/4ft.
(1m)
3-1/4ft.
(1m)
63 125 250 500 1k 2k 4k 8k dB(A)
Standard 60Hz 51.0 53.0 60.5 49.5 51.5 50.5 53.0 46.0 59.0
Low noise mode 60Hz 69.5 48.5 49.5 47.0 49.0 45.0 48.0 43.5 54.5
When Low noise mode is set,the A/C system's capacity is limited. The system could return to normal operation
from Low noise mode automatically in the case that the operation condition is severe.
10
20
30
40
50
60
70
80
90
63 125 250 500 1k 2k 4k 8k
NC-40
NC-30
NC-20
NC-60
NC-50
NC-70
Octave band central frequency (Hz)
Octave band sound level (dB)
Approximate minimum
audible limit on
continuous noise
Stand 60Hz
Low 60Hz
Sound level of PQRY-P336ZSLMU-A1
63 125 250 500 1k 2k 4k 8k dB(A)
Standard 60Hz 78.5 56.5 55.0 51.0 51.0 46.5 43.5 36.5 57.0
Low noise mode 60Hz 57.0 56.5 50.5 46.5 46.5 45.0 47.5 43.5 53.5
When Low noise mode is set,the A/C system's capacity is limited. The system could return to normal operation
from Low noise mode automatically in the case that the operation condition is severe.
10
20
30
40
50
60
70
80
90
63 125 250 500 1k 2k 4k 8k
NC-40
NC-30
NC-20
NC-60
NC-50
NC-70
Octave band central frequency (Hz)
Octave band sound level (dB)
Approximate minimum
audible limit on
continuous noise
Stand 60Hz
Low 60Hz
Sound level of PQRY-P288ZSLMU-A1
63 125 250 500 1k 2k 4k 8k dB(A)
Standard 60Hz 75.5 55.0 58.5 50.5 51.5 49.0 50.5 43.5 58.0
Low noise mode 60Hz 66.5 54.0 50.0 47.0 48.0 45.0 48.0 43.5 54.0
When Low noise mode is set,the A/C system's capacity is limited. The system could return to normal operation
from Low noise mode automatically in the case that the operation condition is severe.
10
20
30
40
50
60
70
80
90
63 125 250 500 1k 2k 4k 8k
NC-40
NC-30
NC-20
NC-60
NC-50
NC-70
Octave band central frequency (Hz)
Octave band sound level (dB)
Approximate minimum
audible limit on
continuous noise
Stand 60Hz
Low 60Hz
Sound level of PQRY-P312ZSLMU-A1
0000005755.BOOK 285 ページ ２０２０年２月２８日 金曜日 午後１時１０分