Type CA FOR THE REDUCTION OF NOISE IN CIRCULAR DUCTS, GALVANISED SHEET STEEL CONSTRUCTION

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1 Hoepage > Products > Airflow Control - VAV and CAV > Variable air volue flow control - VARYCONTROL > Secondary silencer > Type CA Type CA FOR THE REDUCTION OF NOISE IN CIRCULAR DUCTS, GALVANISED SHEET STEEL CONSTRUCTION Circular silencers Type CA for the reduction of noise in the circular ducts of air conditioning systes Absorption aterial is non-cobustible ineral wool with RAL quality ark, biosoluble and hence hygienically safe according to the Geran TRGS 905 (Technical Rules for Hazardous Substances) and EU directive 97/69/EC Mineral wool faced with non-woven glass fibre as protection against erosion due to airflow velocities up to 20 /s Casing and perforated inner duct are galvanised sheet steel Variant with spigot has a groove for a lip seal, suitable for circular connecting ducts to EN 1506 or EN Insertion loss easured according to ISO 7235 Casing air leakage to EN 15727, class B Optional equipent and accessories

2 With flanges on both ends With lip seals on both ends APPLICATION Application Circular silencers Type CA for the reduction of noise in the circular ducts of air conditioning systes For the reduction of air-regenerated noise of air terinal units such as LVC and TVR, and of echanical self-powered controllers such as RN and VFC For the reduction of fan noise Can be used as cross talk silencer to reduce the transfer of noise through ducts between neighbouring roos Special features Insertion loss easured according to ISO 7235 Absorption aterial is non-cobustible Insulation thickness 50 or 100 Noinal sizes 100, 125, 160, 200, 250, 315, 400, 450,, 560, 630, 710, 800 For VAV terinal units and CAV controllers 100, 125, 160, 200, 250, 315, 400 DESCRIPTION Variants 050: Circular silencer with 50 insulation 100: Circular silencer with 100 insulation VF1: Circular silencer with flange on one end VF2: Circular silencer with flanges on both ends

3 Parts and characteristics Casing Perforated inner tube Absorption aterial Accessories GE: Matching flange for one end GZ: Matching flanges for both ends VD2: With lip seals on both ends Construction features Circular casing Spigot suitable for circular ducts to EN 1506 or EN Spigot with groove for lip seal Operating pressure up to 1000 Pa Operating teperature up to 100 C Materials and surfaces Casing and perforated inner duct are galvanised sheet steel Lining is ineral wool Mineral wool To EN 13501, fire rating class A1, non-cobustible RAL quality ark RAL-GZ 388 Biosoluble and hence hygienically safe according to the Geran TRGS 905 (Technical Rules for Hazardous Substances) and EU directive 97/69/EC Faced with glass fibre as protection against erosion through airflow velocities up to 20 /s Inert to fungal and bacterial growth Standards and guidelines Insertion loss easured according to ISO 7235

4 Casing air leakage to EN 15727, class B Maintenance Maintenance-free as construction and aterials are not subject to wear TECHNICAL INFORMATION Technical data, Quick sizing, Specification text, Order code, Produktbeziehungen TECHNICAL DATA Noinal sizes Operating pressure 1000 Pa ax. Operating teperature 100 C ax. QUICK SIZING The stated differential pressures for circular silencers correspond to the values for sooth pipes. Deviations, if any, are of no practical relevance. For ductwork calculation, if the length of a circular silencer is included in the total length of the ductwork, no extra length ust be added. CA050 (insulation thickness 50 ), insertion loss

5 Centre frequency f [Hz] Noinal size Noinal length Noinal size Noinal length De Hz CA100 (insulation thickness 100 ), insertion loss

6 Centre frequency f [Hz] Noinal size Noinal length Noinal size Noinal length De Hz

7 CA, differential pressure Noinal size V Nennlänge [] Noinal size 100 V Δpst l/s ³/h Pa

8 <2 <2 < < <2 <2 < < < <2 <2 < <2 < < < <2 < <2 < <

9 <2 < < < < < < < < < < < < < < < <2

10 SPECIFICATION TEXT Circular silencers for air conditioning systes, rigid construction, available in 13 noinal sizes. Insertion loss easured according to ISO Casing with acoustic and theral insulation. Various types of connection, suitable for circular ducts to EN 1506 or EN Casing air leakage to EN 15727, class B. Special features Insertion loss easured according to ISO 7235 Absorption aterial is non-cobustible Insulation thickness 50 or 100 Materials and surfaces Casing and perforated inner duct are galvanised sheet steel Lining is ineral wool Mineral wool To EN 13501, fire rating class A1, non-cobustible RAL quality ark RAL-GZ 388 Biosoluble and hence hygienically safe according to the Geran TRGS 905 (Technical Rules for Hazardous Substances) and EU directive 97/69/EC Faced with glass fibre as protection against erosion through airflow velocities up to 20 /s Inert to fungal and bacterial growth Technical data Noinal sizes: 100 to 800 Operating pressure: 1000 Pa ax. Operating teperature: 100 C ax. Sizing data

11 D [] H [] Insulation thickness [] V [³/h] D at 250 Hz [db] e Δp [Pa] st ORDER CODE Order exaple: CA100/315 1/GZ/VF2 Insulation thickness 100 Noinal size 315 Length 1 Matching flange Both ends Type of connection Flanges on both ends

12 CA Type Circular silencer Insulation thickness [] Noinal length [] Noinal size [] GE GZ Matching flange No entry: none on one end (only VF1) on both ends (only VF2) Type of connection No entry: spigot VD2 VF1 VF2 Spigot with lip seal on both ends Flange on one end Flanges on both ends Variants, Diensions and weight

13 VARIANTS CA Variant Circular silencer for the reduction of noise Spigot CA/.../VF1 Variant Circular silencer for the reduction of noise Spigot on one end to ake connections to the ducting With flange on one end to ake a detachable connection to the ducting CA/.../VF2 Variant Circular silencer for the reduction of noise With flanges on both ends to ake detachable connections to the ducting DIMENSIONS AND WEIGHT The tables show the available noinal sizes CA, diensions

14 CA-050 CA-100 Noinal size ØD3 ØD3 ØD ØD1 ØD2 n T CA, lengths Noinal length LN CA L CA/.../VF1 L CA/.../VF2 L L CA, weights

15 CA-050 CA-050 CA-050 CA-100 CA-100 CA-100 Noinal size CA/.../VF1, weights

16 CA-050 CA-050 CA-050 CA-100 CA-100 CA-100 Noinal size CA/.../VF2, weights

17 CA-050 CA-050 CA-050 CA-100 CA-100 CA-100 Noinal size CA

18 CA/.../VF1 CA/.../VF2

19 Hoepage > Products > Airflow Control - VAV and CAV > Variable air volue flow control - VARYCONTROL > Secondary silencer > Type CA Installation details, Basic inforation and noenclature INSTALLATION DETAILS Installation and coissioning Any installation orientation Installation in ducts outside of closed roos requires sufficient protection against the effects of weather BASIC INFORMATION AND NOMENCLATURE Principal diensions ØD [] Outer diaeter of the spigot ØD₃ [] Outer diaeter of circular silencers L [] Length of attenuator/silencer including spigot (in airflow direction) L₁ [] Length of acoustic cladding and acoustically effective length B [] Attenuator width and duct width (upright splitters) H [] Attenuator height and duct height (upright splitters) T [] Splitter thickness S [] Hoe Contacts Iprint Delivery and payent ters Privacy Disclaier TROX UK Ltd.

20 Hoepage > Products > Airflow Control - VAV and CAV > Variable air volue flow control - VARYCONTROL > Secondary silencer > Type CA Airway width n [ ] Nuber of flange screw holes [] Weight Noenclature f [Hz] Octave band centre frequency L [db(a)] WA A-weighted sound power level of air-regenerated noise D [db] e Insertion loss V [³/h] and [l/s] Volue flow rate Δp [Pa] st Static differential pressure All sound power levels are based on 1 pw. All values were easured in a TROX lab and to EN ISO Interediate values ay be achieved by interpolation. Lab easureents exceeding 50 db are indicated as 50 db, in line with coon practice. Hoe Contacts Iprint Delivery and payent ters Privacy Disclaier TROX UK Ltd.

21 Hoepage > Products > Airflow Control - VAV and CAV > Variable air volue flow control - VARYCONTROL > Secondary silencer > Type CA TROX UK Ltd Online-Services Service-Hotlines TROX Acadey Your contact partner Our Office London Our Office Thetford Sales: +44 (0) Contact Service: +44 (0) Contact Caxton Way, Thetford, Norfolk, IP24 3SQ, UK Tel: +44 (0) Fax: +44 (0) Technical service +44 (0) Contact General Enquiries info@troxuk.co.uk Sales & Custoer Services sales@troxuk.co.uk Accounts accounts@troxuk.co.uk Hoe Contacts Iprint Delivery and payent ters Privacy Disclaier TROX UK Ltd.