M thermal Mono 
202005                                                                                                                                                                                                                      63 
 
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Data 
Part 2 - Engineering Data 
Figure 2-8.6: MHC-V12W/D2N8-B octave band levels 
Octave band sound pressure level /dB 
 
Octave band center frequency (Hz) 
  
Cooling in rated frequency 
Outdoor air temperature 35⁰C DB; 
EWT 12⁰C, LWT 7⁰C 
  
Cooling in rated frequency 
Outdoor air temperature 35⁰C DB; 
EWT 23⁰C, LWT 18⁰C 
  
Heating in rated frequency 
Outdoor  air  temperature  7⁰C  DB, 
85% R.H.; EWT 30⁰C, LWT 35⁰C. 
      
Heating in rated frequency 
Outdoor  air  temperature  7⁰C  DB, 
85% R.H.; EWT 40⁰C, LWT 45⁰C. 
  
Heating in rated frequency 
Outdoor  air  temperature  7⁰C  DB, 
85% R.H.; EWT 47⁰C, LWT 55⁰C. 
NR-90 
NR-80 
NR-70 
NR-60 
NR-50 
NR-40 
NR-30 
NR-20 
NR-10 
NR-0 
Figure 2-8.7: MHC-V14W/D2N8-B octave band levels 
Octave band sound pressure level /dB 
 
Octave band center frequency (Hz) 
  
Cooling in rated frequency 
Outdoor air temperature 35⁰C DB; 
EWT 12⁰C, LWT 7⁰C 
  
Cooling in rated frequency 
Outdoor air temperature 35⁰C DB; 
EWT 23⁰C, LWT 18⁰C 
      
Heating in rated frequency 
Outdoor  air  temperature  7⁰C  DB, 
85% R.H.; EWT 30⁰C, LWT 35⁰C. 
      
Heating in rated frequency 
Outdoor  air  temperature 7⁰C DB, 
85% R.H.; EWT 40⁰C, LWT 45⁰C. 
  
Heating in rated frequency 
Outdoor  air  temperature  7⁰C  DB, 
85% R.H.; EWT 47⁰C, LWT 55⁰C. 
NR-90 
NR-80 
NR-70 
NR-60 
NR-50 
NR-40 
NR-30 
NR-20 
NR-10 
NR-0 
   
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31.5 63 125 250 500 1000 2000 4000 8000
-10
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10
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30
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80
90
100
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120
31.5 63 125 250 500 1000 2000 4000 8000