Zehnder ComfoWell attenuator, CW-S 520

Data Table

Label	Value
Catalogue number	990323502
GTIN	7640138031083
Surface protection	Sendzimir galvanised
Height	241 mm
Width	236 mm
Max. air volume	550 m³/h
Air extraction
Damping 1000 Hz	12 dB
With inspection opening and cover
Damping 4000 Hz	15 dB
Damping 2000 Hz	20.4 dB
Connection 1	Other
Damping 125 Hz	6.3 dB
Damping 250 Hz	10.3 dB
Air extraction
Damping 500 Hz	16.5 dB
Bottom connection
Expansion link finish	Other
Nominal duct diameter, main duct	Other
With edge links
Embeddable in concrete
Material	Sendzimir-galvanised steel
Connection 2	Other
With flow approach cap
Type of housing	Part with main air duct
Resonance plate	None
Material	Steel
Connection main duct	Other
Damping 63 Hz	0.2 dB
Material quality	Other
Max. medium temperature (continuous)	80 °C
Air supply
Max. air volume	550 m³/h
Damping 8000 Hz	13.5 dB
Length	536 mm
Embeddable in concrete
Nominal duct height	230 mm
With inspection opening and cover
Nominal duct width	520 mm
Bottom connection
Length	500 mm
Air supply

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