Table of Contents
7
Sound data
7 - 2 Sound pressure night quiet mode
ERHQ011AAW1*
HEATING
Octave band center frequency (Hz)
Notes:
1
Data is valid at free field condition (measured in a semi-anachoic room)
2
dBA = A-weighted sound power level (A-scale according to IEC)
3
Reference acoustic pressure 0dB = 20μPa
4
If sound is measured under actual installation conditions, the measured
value will be higher due to environmental noise and sound reflections.
ERHQ011AAW1*
COOLING
Octave band center frequency (Hz)
Notes:
1
Data is valid at free field condition (measured in a semi-anachoic room)
2
dBA = A-weighted sound power level (A-scale according to IEC)
3
Reference acoustic pressure 0dB = 20μPa
4
If sound is measured under actual installation conditions, the measured
value will be higher due to environmental noise and sound reflections.
• Outdoor units • ERHQ011-016AAW1
Measuring location (discharge side)
ERHQ014AAW1*
Measuring location (discharge side)
TM
• Altherma
• Outdoor units
ERHQ014AAW1*
HEATING
Octave band center frequency (Hz)
COOLING
Octave band center frequency (Hz)
ERHQ016AAW1*
HEATING
Octave band center frequency (Hz)
3TW57919-4
ERHQ016AAW1*
COOLING
Octave band center frequency (Hz)
3TW57919-3
2
7
65
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