Sound And Vibration Data; Sound Level And Acoustic Hood - Danfoss VCH115 Application Manual

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Sound and vibration data

Typical sounds and vibrations in systems can be broken down into the following three categories:
• Sound radiation (through air)
• Mechanical vibrations (through parts and structure)
• Gas pulsation (through refrigerant)
The following sections focus on the causes and methods of mitigation for each of the above sources.

Sound level and acoustic hood

Model
VCH115
VCH115 with IP54 E-Box
 NOTE:
Nominal sound power for reference at ARI A/C (7.2°C/54.4°C/11.1°C/8.3°C) (45°F/130°F/20°F/15°F) conditions
measured in free space.
• Max. tolerance +3dBA for individual compressor.
• With acoustic hood in the table, acoustic can decrease 5~7dBA.
© Danfoss | Climate Solutions | 2023.08
Frequency RPS Without accoustic hood (dBA)
120
120
Acoustic hood code
89
89
AB392939083370en-000202 | 11
120Z0850
120Z0897