Type CA

Circular 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 systems

Absorption material is non-combustible mineral wool with RAL quality mark, biosoluble and hence hygienically safe according to the German 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 m/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 13180
Insertion loss measured according to ISO 7235
Casing air leakage to EN 15727, class B

Optional equipment and accessories

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 systems
For the reduction of air-regenerated noise of air terminal units such as LVC and TVR, and of mechanical 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 rooms

Special features

Insertion loss measured according to ISO 7235
Absorption material is non-combustible
Insulation thickness 50 mm or 100 mm

Nominal sizes

100, 125, 160, 200, 250, 315, 400, 450, 500, 560, 630, 710, 800 mm

For VAV terminal units and CAV controllers

100, 125, 160, 200, 250, 315, 400 mm

Description

Variants

050: Circular silencer with 50 mm insulation
100: Circular silencer with 100 mm insulation
VF1: Circular silencer with flange on one end
VF2: Circular silencer with flanges on both ends

Parts and characteristics

Casing
Perforated inner tube
Absorption material

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 13180
Spigot with groove for lip seal
Operating pressure up to 1000 Pa
Operating temperature up to 100 °C

Materials and surfaces

Casing and perforated inner duct are galvanised sheet steel
Lining is mineral wool

Mineral wool

To EN 13501, fire rating class A1, non-combustible
RAL quality mark RAL-GZ 388
Biosoluble and hence hygienically safe according to the German 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 m/s
Inert to fungal and bacterial growth

Standards and guidelines

Insertion loss measured according to ISO 7235
Casing air leakage to EN 15727, class B

Maintenance

Maintenance-free as construction and materials are not subject to wear

Technical information

Technical data, Quick sizing, Specification text, Order code

Nominal sizes	100 – 800 mm
Operating pressure	1000 Pa max.
Operating temperature	100 °C max.

The stated differential pressures for circular silencers correspond to the values for smooth 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 must be added.

CA050 (insulation thickness 50 mm), insertion loss

Nominal size	Nominal length	Centre frequency f_m [Hz]
Nominal size	Nominal length	63	125	250	500	1000	2000	4000	8000
Nominal size	Nominal length	D_e
Nominal size	mm	Hz
100	500	3	5	8	14	23	30	18	13
100	1000	4	9	15	27	42	50	43	25
125	500	3	4	7	12	21	23	12	10
125	1000	4	7	12	23	38	42	29	20
160	500	2	3	6	10	18	17	8	8
160	1000	3	5	9	19	34	30	18	15
200	500	1	2	5	9	16	13	5	6
200	1000	2	4	8	16	31	22	12	11
250	500	1	2	4	8	14	10	3	4
250	1000	2	3	6	14	28	17	8	9
250	1500	2	4	8	19	39	23	13	12
315	500	1	1	3	7	12	7	2	3
315	1000	1	2	5	12	25	13	5	6
315	1500	2	3	7	17	35	17	9	9
400	500	1	1	3	6	11	6	1	2
400	1000	1	2	4	10	22	10	3	5
400	1500	1	2	6	14	31	13	6	7

CA100 (insulation thickness 100 mm), insertion loss

Nominal size	Nominal length	Centre frequency f_m [Hz]
Nominal size	Nominal length	63	125	250	500	1000	2000	4000	8000
Nominal size	Nominal length	D_e
Nominal size	mm	Hz
100	500	4	9	12	18	35	33	26	14
100	1000	5	17	24	35	50	50	47	25
125	500	4	7	10	17	31	26	19	11
125	1000	5	14	21	32	48	44	33	20
160	500	3	6	9	15	28	20	13	8
160	1000	5	11	18	30	42	33	22	15
200	500	3	5	8	15	25	16	9	7
200	1000	4	9	16	28	38	26	16	12
250	500	2	4	7	14	21	13	6	5
250	1000	3	8	14	26	33	21	11	9
250	1500	4	11	21	37	41	27	15	12
315	500	2	3	6	13	18	10	4	4
315	1000	3	6	12	24	29	16	8	7
315	1500	3	9	18	34	35	21	10	9
400	500	1	3	6	12	17	8	3	3
400	1000	2	5	11	23	25	12	5	5
400	1500	3	7	16	32	31	16	7	7
450	1000	2	5	10	22	23	11	4	5
450	1500	2	6	15	31	29	14	6	6
500	1000	2	4	10	21	22	10	4	4
500	1500	2	6	14	30	27	13	5	6
560	1500	2	5	13	29	25	11	4	5
630	1500	2	5	12	28	23	10	4	4
710	1500	2	5	11	27	22	9	3	4
800	1500	2	4	11	26	20	8	2	3

CA, differential pressure

Nominal size	V		Nennlänge [mm]
Nominal size	V		500	1000	1500
Nominal size	V		∆p_st
Nominal size	l/s	m³/h	Pa
100	30	108	2	2
100	60	216	4	8
100	75	270	6	12
100	90	324	8	18
125	50	180	2	2
125	95	342	4	6
125	120	432	6	10
125	145	522	6	14
160	80	288	2	2
160	155	558	2	6
160	195	702	4	8
160	235	846	6	10
200	125	450	2	2
200	245	882	2	4
200	310	1116	4	6
200	370	1332	4	8
250	195	702	<2	<2	<2
250	385	1386	<2	4	4
250	485	1746	2	4	6
250	580	2088	4	6	8
315	310	1116	<2	<2	<2
315	615	2214	<2	2	4
315	770	2772	<2	4	4
315	925	3330	2	4	6
400	500	1800	<2	<2	<2
400	995	3582	<2	<2	2
400	1245	4482	<2	2	4
400	1495	5382	<2	4	4
450	630	2268		<2	<2
450	1260	4536		<2	<2
450	1575	5670		<2	4
450	1890	6804		2	4
500	780	2808		<2	<2
500	1560	5616		<2	2
500	1950	7020		2	2
500	2335	8406		2	4
560	980	3528			<2
560	1955	7038			<2
560	2445	8802			2
560	2935	10566			4
630	1240	4464			<2
630	2480	8928			<2
630	3095	11142			<2
630	3715	13374			<2
710	1575	5670			<2
710	3150	11340			<2
710	3935	14166			<2
710	4725	17010			<2
800	2000	7200			<2
800	4000	14400			<2
800	5000	18000			<2
800	6000	21600			<2

Circular silencers for air conditioning systems, rigid construction, available in 13 nominal sizes.

Insertion loss measured according to ISO 7235.

Casing with acoustic and thermal insulation.

Various types of connection, suitable for circular ducts to EN 1506 or EN 13180.

Casing air leakage to EN 15727, class B.

Special features

Insertion loss measured according to ISO 7235
Absorption material is non-combustible
Insulation thickness 50 mm or 100 mm

Materials and surfaces

Casing and perforated inner duct are galvanised sheet steel
Lining is mineral wool

Mineral wool

To EN 13501, fire rating class A1, non-combustible
RAL quality mark RAL-GZ 388
Biosoluble and hence hygienically safe according to the German 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 m/s
Inert to fungal and bacterial growth

Technical data

Nominal sizes: 100 to 800 mm
Operating pressure: 1000 Pa max.
Operating temperature: 100 °C max.

Sizing data

D _______________________ [mm]
H _______________________ [mm]
Insulation thickness __________ [mm]
V _______________________ [m³/h]
D_e at 250 Hz ________________ [dB]
Δp_st _______________________ [Pa]

Type
CA Circular silencer

Insulation thickness [mm]
050 50
100 100

Nominal size [mm]
100
125
160
200
250
315
400
450
500
560
630
710
800

Nominal length [mm]
500
1000
1500

Matching flange
       No entry: none
GE       on one end (only VF1)
GZ       on both ends (only VF2)

Type of connection
       No entry: spigot
VD2       Spigot with lip seal on both ends
VF1       Flange on one end
VF2       Flanges on both ends

Order example: CA100/315×1500/GZ/VF2

Insulation thickness	100 mm
Nominal size	315 mm
Length	1500 mm
Matching flange	Both ends
Type of connection	Flanges on both ends

Variants, Dimensions and weight

Variant

Circular silencer for the reduction of noise
Spigot

CA/.../VF1

Variant

Circular silencer for the reduction of noise
Spigot on one end to make connections to the ducting
With flange on one end to make a detachable connection to the ducting

CA/.../VF2

Variant

Circular silencer for the reduction of noise
With flanges on both ends to make detachable connections to the ducting

The tables show the available nominal sizes

CA, dimensions

Nominal size	CA-050 ØD₃ mm	CA-100 ØD₃ mm	ØD mm	ØD₁ mm	ØD₂ mm	n	T mm
100	199	299	99	132	152	4	4
125	224	324	124	157	177	4	4
160	259	359	159	192	212	6	4
200	299	399	199	233	253	6	4
250	349	449	249	283	303	6	4
315	414	514	314	352	378	8	4
400	499	599	399	438	464	8	4
450		648	448	488	514	8	4
500		698	498	538	564	8	4
560		758	558	600	634	12	4
630		828	628	670	704	12	4
710		908	708	750	784	12	4
800		998	798	840	874	16	4

CA, lengths

Nominal length mm L_N	CA L mm	CA/.../VF1 L mm	CA/.../VF2 L mm	L₁ mm
500	500	490	480	380
1000	1000	990	980	880
1500	1500	1490	1480	1380

CA, weights

Nominal size	CA-050 500 m kg	CA-050 1000 m kg	CA-050 1500 m kg	CA-100 500 m kg	CA-100 1000 m kg	CA-100 1500 m kg
100	4	7		6	11
125	5	9		7	13
160	70	12		9	16
200	7	13		9	17
250	9	16	22	11	20	29
315	12	20	28	14	25	35
400	15	25	34	18	30	42
450					33	46
500					36	52
560						55
630						62
710						68
800						76

CA/.../VF1, weights

Nominal size	CA-050 500 m kg	CA-050 1000 m kg	CA-050 1500 m kg	CA-100 500 m kg	CA-100 1000 m kg	CA-100 1500 m kg
100	4	7		6	11
125	5	9		7	13
160	8	13		10	17
200	8	14		10	18
250	10	17	23	12	21	30
315	13	21	29	15	26	36
400	16	26	35	19	31	43
450					34	47
500					38	54
560						57
630						64
710						71
800						79

CA/.../VF2, weights

Nominal size	CA-050 500 m kg	CA-050 1000 m kg	CA-050 1500 m kg	CA-100 500 m kg	CA-100 1000 m kg	CA-100 1500 m kg
100	4	7		6	11
125	6	10		8	14
160	8	13		10	17
200	8	14		10	18
250	10	17	23	12	21	30
315	14	22	30	16	27	37
400	18	28	37	21	33	45
450					36	49
500					39	55
560						59
630						67
710						73
800						82

Installation details, Basic information and nomenclature

Installation and commissioning

Any installation orientation
Installation in ducts outside of closed rooms requires sufficient protection against the effects of weather

Principal dimensions

ØD [mm]

Outer diameter of the spigot

ØD₃ [mm]

Outer diameter of circular silencers

L [mm]

Length of attenuator/silencer including spigot (in airflow direction)

L₁ [mm]

Length of acoustic cladding and acoustically effective length

B [mm]

Attenuator width and duct width (upright splitters)

H [mm]

Attenuator height and duct height (upright splitters)

T [mm]

Splitter thickness

S [mm]

Airway width

n [ ]

Number of flange screw holes

m [kg]

Weight

Nomenclature

f_m [Hz]

Octave band centre frequency

L_WA [dB(A)]

A-weighted sound power level of air-regenerated noise

D_e [dB]

Insertion loss

V [m³/h] and [l/s]

Volume flow rate

Δp_st [Pa]

Static differential pressure

All sound power levels are based on 1 pW.

All values were measured in a TROX lab and to EN ISO 7235. Intermediate values may be achieved by interpolation.

Lab measurements exceeding 50 dB are indicated as 50 dB, in line with common practice.

Downloads

informazioni di prodotto

Stampa pagina Type CA
Product data sheet Type CA

Product data sheet 990 KB pdf

certificati

Declaration of conformity or declaration of incorporation Type CA

Declaration of conformity or declaration of incorporation 130 KB pdf

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Type CA

For the reduction of noise in circular ducts, galvanised sheet steel construction

Application

Description

Technical information

Technical data, Quick sizing, Specification text, Order code

Variants, Dimensions and weight

Installation details, Basic information and nomenclature

Downloads

informazioni di prodotto

Stampa pagina Type CA

Product data sheet Type CA

certificati

Declaration of conformity or declaration of incorporation Type CA

TROX Services

TECNICAMENTE NECESSARIO

STATISTICHE E ANALISI DEL SITO WEB

CONVENIENZA E PERSONALIZZAZIONE

PER LA MIGLIORE ESPERIENZA TROX