Sound Pressure Curves - Hitachi UTOPIA R32 Series Technical Catalogue

5 Acoustic characteristic curves

Sound pressure curves

5.2 Sound pressure curves
RAS-3HVRC2
(Hi) Heating
Night Shift
mode
Approximate
threshold of hearing
for continuous noise
Central frequency (cycle per second)
Cooling/Heating/Night mode: 54/52/48 dB(A)
RAS-5H(V)(R/N)C2E
Night Shift
mode
Approximate
threshold of hearing
for continuous noise
Central frequency (cycle per second)
Cooling/Heating/Night mode: 54/54/51 dB(A)
63 TCGB0136 rev.1 - 05/2021
(Hi) Cooling
(Hi) Heating
(Hi) Cooling
RAS-4H(V)(R/N)C2E
(Hi) Heating
(Hi) Cooling
Night Shift
mode
Approximate
threshold of hearing
for continuous noise
Central frequency (cycle per second)
Cooling/Heating/Night mode: 54/54/51 dB(A)
RAS-6H(V)(R/N)C2E
(Hi) Heating
(Hi) Cooling
Night Shift
mode
Approximate
threshold of hearing
for continuous noise
Central frequency (cycle per second)
Cooling/Heating/Night mode: 56/56/51 dB(A)
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