n
Calculate refrigerant concentration
Refrigerant concentration =
Total amount of replenished refrigerant in refrigerant facility (kg)
Capacity of smallest room where indoor unit is installed (m
3
)
Limiting concentration: 0.44kg/m
3
(R410A)
Check Points, Maintenance and Troubleshooting
The A-weighted sound pressure emitted by this product is below 70 dB.
• The noise level can vary depending on the site.
The figures quoted are emission level and are not necessarily safe working levels. Whilst there is a
correlation between the emission and exposure levels, this cannot be used reliably to determine
whether or not further precautions are required. Factor that influence the actual level of exposure of
the workforce include the characteristics of the work room and the other sources of noise, i.e. the
number of equipment and other adjacent processes and the length of time for which an operator ex-
posed to the noise. Also, the permissible exposure level can vary from country to country. This infor-
mation, however, will enable the user of the equipment to make a better evaluation of the hazard
and risk.
Airborne Noise Emission
Limiting concentration is the limit of Freon gas concentration where immediate measures can be
taken without hurting human body when refrigerant leaks in the air. The limiting concentration shall
be described in the unit of kg/m
3
(Freon gas weight per unit air volume) for facilitating calculation
Limiting concentration
96
Air-to-Water Heat Pump
Summary of Contents for Therma V AHUW096A2
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