ï Indoor Units ï R-410A ï FHQ-BVV1B9ï Split Sky Air ï Indoor Units169 Sound data9 - 2 Sound pressure spectrum4D028280BOctave band sound pressure levelOctave band center frequency (Hz)FHQ35Bapproximatethreshold hearingfor continuousnoiseNOTES1 Sound pressure levels are measured in an anechoicroom.2 Operation sound levels are valid at nominaloperation condition3 Operation sound level differs with operation andambient conditions.H (230V)L (230V)4D028281BOctave band sound pressure levelOctave band center frequency (Hz)FHQ50Bapproximatethreshold hearingfor continuousnoiseNOTES1 Sound pressure levels are measured in an anechoicroom.2 Operation sound levels are valid at nominaloperation condition3 Operation sound level differs with operation andambient conditions.H (230V)L (230V)4D037997AFHQ60BOctave band sound pressure levelOctave band center frequency (Hz)NOTES1 Sound pressure levels are measured in an anechoicroom.2 Operation sound levels are valid at nominaloperation condition3 Operation sound level differs with operation andambient conditions.approximatethreshold hearingfor continuousnoiseH (230V)L (230V)4D028355BFHQ71BOctave band center frequency (Hz)Octave band sound pressure levelapproximate thresholdhearing for continuousnoiseHLNOTES1 Operation sound is measured in an anechoicchamber.2 Operation sound level differs with operation andambient conditions.3 Sound levels are valid at nominal operationconditions.