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CD30 / CD60 [e]
Main features
• Silencer for sound attenuation in circular air duct systems
• Type-approved in airtightness class D
• CD30: fire resistance class EI30 (insulation thickness 50 mm)
• CD60: fire resistance class EI60 (insulation thickness 100 mm)
Description
• Sound attenuative silencer for circular air duct systems.
• The product meets airtightness class D according to EN 15727:2010, provided that the installation requirements are met.
• The product is type-approved for fire resistance class E 120.
• CD30 achieves fire resistance class EI 30 with a 50 mm safety distance.
• CD60 achieves fire resistance class EI 60 when the required safety distances are met, depending on the product length. See the product data sheet for details.
• The product complies with the requirements for mechanical ventilation systems, according to type approval SC0234-16 in accordance with the building regulations issued by the Swedish National Board of Housing, Building and Planning.
• All technical assessment of the product, as well as certification, fire integrity testing and calculation of safety distances for fire insulation, has been carried out by RISE – Research Institutes of Sweden AB.
Versions
• CD30: Fire resistance class EI30 (insulation thickness 50 mm).
• CD60: Fire resistance class EI60 (insulation thickness 100 mm).
• Available in 2–4 length options depending on the variant, see list below.
Product sizes – CD30 (mm)
Duct dimension | External dimension | Length options
Ø080 | 180 | 300/600/900/1200 mm
Ø100 | 200 | 300/600/900/1200 mm
Ø125 | 224 | 300/600/900/1200 mm
Ø160 | 250 | 300/600/900/1200 mm
Ø200 | 300 | 300/600/900/1200 mm
Ø250 | 355 | 300/600/900/1200 mm
Ø315 | 400 | 600/900/1200 mm
Ø400 | 500 | 600/900/1200 mm
Product sizes – CD60 (mm)
Duct dimension | External dimension | Length options
Ø080 | 280 | 300/600/900/1200 mm
Ø100 | 300 | 300/600/900/1200 mm
Ø125 | 315 | 300/600/900/1200 mm
Ø160 | 355 | 300/600/900/1200 mm
Ø200 | 400 | 300/600/900/1200 mm
Ø250 | 450 | 300/600/900/1200 mm
Ø315 | 500 | 600/900/1200 mm
Ø400 | 600 | 600/900/1200 mm
Ø500 | 710 | 900/1200 mm
Ø630 | 800 | 900/1200 mm
Ø800 | 1000 | 900/1200 mm
Material options
• Standard version of the product is manufactured from unpainted galvanized steel sheet (EN 10346).
• The product can also be ordered in stainless acid-resistant steel sheet (in accordance with EN 14404).
• Please contact your sales representative if aluzinc-coated steel sheet is required.
• Outer and inner casing made of unpainted galvanized steel sheet (EN 10346) with EPDM rubber gaskets.
• Insulation made of sound-absorbing, non-combustible mineral wool (in accordance with EN 12237 and classified A2-s1,d0 according to EN 13501-1), surface-coated with perforated sheet metal.
• The product can also be ordered in stainless acid-resistant steel sheet (in accordance with EN 14404).
• The following information applies to version e of the products CD (CD30/CD60), CDB (CDB60), CDV (CDB30/CDB60)
• The products meet airtightness class D according to EN 15727:2010. To comply with the requirements for airtightness class D, the attenuators must be installed according to specific requirements*).
Fire Resistance Classes
• The products are type-approved for fire resistance class E 120.
• Products of type XXX30 achieve fire resistance class EI 30 with a 50 mm safety distance*2).
• Products of type XXX60 achieve fire resistance class EI 60 when the required safety distances are met, depending on product size. See the operation and maintenance instructions*) for details.
Installation
• The products are intended for installation in a circular duct.
• During installation, suspension supports that wrap around the outer casing must be used.
• The product must not be mounted solely suspended at the connection points.
• Provide a minimum straight duct length of 4 × ØD upstream of the attenuator to ensure the stated acoustic performance.
• During installation, the applicable safety distances must be observed for the fire resistance classification to be maintained.
• See the operation and maintenance documents*) for more information on installing the product.
*1) Operation and maintenance instructions are provided in a separate document, ...DU-SE/...DV-DK – Operation and Maintenance (pdf), which can be downloaded from our product pages.
*2) Safety distance refers to the applicable requirements for the minimum distance between the silencer and evacuating persons or combustible materials.