Trox Technik CA Manual de usuario

Product overview

Fig. 1: Schematic representation, CA

1 Casing of the silencer

2 Spigot

3 Lip seal

Important notes

Safety

Correct use

Circular silencers are used to reduce noise in the

circular ducts of ventilation and air conditioning sys-

tems within closed rooms.

For the reduction of air-regenerated noise of air

terminal units and mechanical self-powered control-

lers, etc.

Do not use circular silencers in extract air systems

in commercial kitchens unless the extract air has

been cleaned as much as possible with high-effi-

ciency aerosol separators; see VDI 2052.

Use in potentially explosive atmos-

pheres (ATEX)

Circular silencers do not fall under the scope

in accordance with Chapter 1, Article 1, Point

1a, 1b and 1c of EU Directive 2014/34/EU. The

circular silencers must be used in areas with

a potentially explosive atmosphere, zones 1, 2

and zones 21, 22 (outside), in accordance with

Guideline 1999/92/EC.

Please note:

–Max. operating temperature 90 °C

–Max. airflow velocity 20 m/s

–When using lip seals for tube attachment,

a grounding cable must be provided for the

sound attenuator/tube.

–Earth circular silencers!

–Clean sound attenuators regularly to prevent

accumulated dust!

–Clean circular silencers in such a way that

no electrostatic charge builds up!

Manufacturer's statement

www.troxtechnik.com.

Installation manual GB/en

Circular silencer

TROX GmbH

Heinrich-Trox-Platz

47504 Neukirchen-Vluyn, Ger-

many

Germany

+49 (0) 2845 202-0

+49 (0) 2845 202-265

E-mail: [email protected]

www.troxtechnik.com

A00000071256, 01/2023, © TROX GmbH 2022

Circular silencer CA 1

Incorrect use

WARNING!

Danger of injury or risk of damage to property

due to incorrect use

Incorrect use of the circular silencer can lead to

dangerous situations.

Never use the circular silencer:

–outdoors without sufficient protection against

the effects of weather

– in rooms and systems with aggressive or

contaminated air (to be assessed on a case

to case basis)

– in process air systems

Modifying the unit or using replacement parts that

have not been approved by TROX is not permitted.

Staff

Qualification

The work described in this manual has to be car-

ried out by individuals with the qualification, training,

knowledge and experience described below:

Specialized personnel

Specialised personnel are personnel, who due to

their specialized training, skills, and experience,

as well as knowledge of the applicable standards

and regulations, are capable of executing the tasks

assigned to them, and of recognizing possible haz-

ards and avoiding them on their own.

Personal protective equipment

Personal protective equipment is equipment that

protects the user against health or safety risks at

work.

Personal protective equipment must be worn for

various types of work; the protective equipment

required is listed in this manual together with the

description of each type of work.

Description of personal protective equipment

Industrial safety helmet

Industrial safety helmets protect the head from

falling objects, suspended loads, and the effects of

striking the head against stationary objects.

Protective gloves

Protective gloves protect hands from friction, abra-

sions, punctures, deep cuts, and direct contact with

hot surfaces.

Safety shoes

Safety shoes protect the feet against crushing,

falling parts, and from slipping on slippery ground.

Repair and replacement parts

Only qualified personnel must repair the products,

and they have to use genuine replacement parts.

Transport, storage and packaging

Delivery check

Check delivered items immediately after arrival for

transport damage and completeness. In case of

any damage or an incomplete shipment, contact the

shipping company and your supplier immediately.

Transport, storage and packaging

Circular silencer CA2

Transport on site

Please note:

Be careful when unloading or moving the

product, and pay attention to the symbols and

information on the packaging.

If possible, take the product in its transport

packaging up to the installation location.

Use only lifting and transport gear designed for

the required load.

Always secure the load against tipping and

falling.

Do not move bulky items just by yourself. Get

help to prevent injuries and damage.

Storage

Please note:

Store the product only in its original packaging

Protect the product from the effects of weather

Protect the product from humidity, dust and

contamination

Storage temperature: -30 °C to 90 °C.

Relative humidity: 80 % max., no condensation

Packaging

Properly dispose of packaging material.

Installation

General installation information

Personnel:

Specialized personnel

Protective equipment:

Protective gloves

Industrial safety helmet

Safety shoes

CAUTION!

Danger of injury from sharp edges, sharp cor-

ners and thin sheet metal parts!

Sharp edges, sharp corners and thin sheet metal

parts may cause cuts or grazes.

– Be careful when carrying out any work.

–Wear protective gloves, safety shoes and a

hard hat.

Please note:

Horizontal or vertical installation orientation.

Duct connection on both sides.

Installation in ducts outside closed rooms

requires sufficient protection against the effects

of weather.

Length (L) refers to the airflow direction.

Installation material is not part of the supply

package unless stated otherwise.

Airflow direction freely selectable.

Torsion-free installation.

InstallationOperation

Circular silencer CA 3

Installation information for circular silencer

General information

When designing and constructing ventilation

and air conditioning systems, take into account

the requirements of VDI6022, in particular:

–Hygienic, clean installation of all compo-

nents and their air distribution surfaces

– Inspection and cleaning options by plan-

ning inspection/cleaning openings in the

ducting system

– Avoidance of leaks

Affix the circular silencer proficiently and only

to load-bearing components.

Load suspension systems only with the weight

of the circular silencer. Adjacent components

and connecting ducts must be supported sepa-

rately.

Only use approved and sufficiently dimen-

sioned suspensions for fixing. Secure screw

connections against self-loosening, e.g., by

locking them. Fixing material is not included in

the supply package.

Use only the shortest possible self-tapping

screws in the vicinity of the spigot for fixing

Fig. 2: Installation example for circular silencer

1 Duct

2 Circular silencer

3 Drilling screw for affixing to the ducting

4 Clamp

5 Suspension, e.g., with threaded rod

Fig. 3: Examples of fixings for rounded units

1 Fixing to pipe clamps

2 Fixing to suspension element

When installing the circular silencer, choose

a load-bearing structure that will support the

entire weight of the circular silencer construc-

tion.

The weight of the circular silencer must not be

supported by the spigots or flanges alone.

Tension-free assembly

Structure-borne sound transmission must be

avoided by taking suitable measures.

Installation in ducts outside closed rooms

requires sufficient protection against the effects

of weather

Take standard DIN EN 12236 into considera-

tion (suspensions and supports for air ducts)

Flange constructions

Flange constructions are designed according to DIN

EN 12220. Connection dimensions of the flanges

can be found in the standard.

Assembly to control components

Circular silencers without splitters can be used for

the reduction of air-regenerated noise of air terminal

units and mechanical self-powered controllers. The

installation takes place immediately downstream of

the control component.

InstallationOperation

Circular silencer CA4

Connecting the duct

When connecting the ducting, the customer must

ensure that the connection points are installed as

air-tight as possible in order to avoid negative influ-

ences from leakages such as air volume deviations,

power consumption, etc. Unless otherwise stated,

the connecting material is not included in the supply

package.

Before connecting the ducting:

Check the inside of the unit for damage and

loose parts.

Remove any contamination from the ducting.

Leakage classes

In order to be able to achieve the required tight-

ness of the duct system, it is necessary that suit-

able sound attenuators and duct components have

been selected. In addition, the following should be

observed:

Proper and expert assembly

Provide seals

Establish the cable fastening (suspension/sup-

port)

Circular ducting – metal

Spigot without lip seal

Plug-in mounting on ducting in accordance with EN 1506 or EN 13180.

Fixing and sealing with ventilation strip, e.g., KLP180.

When using heat-shrinkable tape near the spigot, watch out for plastic

parts of other components and heat carefully.

Spigot with optional lip seal

Plug-in mounting on ducting in accordance with EN 1506 or EN 13180.

Connect the spigot with the ducting, e.g., using drilling screws.

No further sealing required.

Spigot with steel flanges (galvanised steel)

Matching flanges available as accessories

Seal and screw connection M8 (to be provided by others)

Dimensions and number of holes in accordance with EN 12220.

Position the ducting exactly. Do not pull the distances together via the

flange connection.

Retrofitting of lip seals

Double lip seal: Fit the short lip (1) on the connection side

Fit the ring seal as shown; avoid excessive stretching.

Check for proper seating in the groove

Apply talcum around the ring seal

InstallationOperation

Circular silencer CA 5

Technical data

General data

Item Value

Nominal sizes 80 - 800 mm

Operating pressure Minimum -750 Pa

2000 Pa max.

Airflow velocity ≤ 20 m/s

Air temperature -30 °C to 90 °C

Relative humidity ≤ 80%, no condensation

Casing leakage according to

EN 15727

Class D (up to and including

nominal size 400)

Class C (from nominal size

450)

* No corrosion resistance according to ISO 12944-2 has been speci-

fied for circular silencers.

Item Value

Materials of circular

silencer*

Galvanised steel

(1.0917)

Stainless steel V2A

(1.4301)

Stainless steel V4A

(1.4571)

* No corrosion resistance according to ISO 12944-2 has been speci-

fied for circular silencers.

Technical data

Circular silencer CA6

Dimensions and weightCA

ØD

ØD₃

ØD₂

60 L₁

Dimensions

nominal size ØD CA025 CA050 CA100

ØD2 ØD3 ØD2 ØD3 ØD2 ØD3

80 79 80 129 80 184 284

100 99 100 154 100 204 100 304

125 124 125 184 125 228 125 319

160 159 160 204 160 254 160 354

200 199 200 254 200 304 200 405

250 249 250 354 250 455

315 314 315 405 315 505

400 399 400 505 400 605

450 448 450 636

500 498 500 716

560 558 560 806

630 628 630 806

710 708 710 908

800 798 800 1008

No registration: Spigot with groove according to EN 1506 / ØD

D2 Spigot with lip seal on both sides acc. to EN 1506 / ØD

AS Spigot with lip seal - ØD and socket-type spigot on one end - ØD2

ØD3 outer diameter

Technical data

Circular silencer CA 7

Lengths

Nominal length L L1

[mm]

500 500 380

1000 1000 880

1500 1500 1380

Weights (plain casing)

nominal

size

CA025 CA050 CA100

Nominal length

500 1000 500 1000 1500 500 1000 1500

m [kg]

80 3 4 3 6

100 3 5 4 6 5 9 13

125 3 6 4 7 6 10 14

160 4 7 5 8 7 11 16

200 5 8 6 10 8 13 19

250 7 12 17 9 15 22

315 8 14 21 10 18 25

400 10 18 26 13 23 32

450 24 33

500 28 40

560 45

630 47

710 54

800 62

Commissioning

Commissioning and operation

Personnel:

Specialized personnel

Before you start commissioning:

Check proper installation of the circular

silencers.

Ensure that all sound attenuators are

clean and free from residues and for-

eign matter.

Commissioning

Code of good practice for commis-

sioning

Commissioning is governed by the standard "DIN

EN 12599 Testing and measuring procedures

for the transfer of installed ventilation and air

conditioning systems", and, if applicable, contrac-

tually agreed services between HVAC contrac-

tors, system owners and installation engineers.

The standard describes the essential commis-

sioning steps of the completeness check, func-

tion check, function measurement as well as

report generation and handover.

Commissioning

Circular silencer CA8

Operation

Once commissioning has been completed, the cir-

cular silencer will operate in a self-powered manner

and require no intervention from the system owner.

Depending on the area of application of the circular

silencer, test specifications and intervals may have

to be observed.

Maintenance

System owner's responsibility

WARNING!

Only authorised specialist personnel are

allowed to perform the described mainte-

nance measures.

The system owner is responsible for maintenance.

The system owner is responsible for creating a

maintenance plan, for defining the maintenance

goals, and for the functional reliability of the equip-

ment.

The legal regulations must be observed during

maintenance, e.g. the system owner is responsible

for hygienic operation in accordance with VDI 6022.

Maintenance

The circular silencers are low-maintenance in terms

of wear, but they must be included in the regular

cleaning of the ventilation system. Regular care and

maintenance ensure long service life of the circular

silencer.

Inspection measures

1. Remove contamination that affects the func-

tion of the circular silencer.

2. Check all screws for firm seating and

retighten them, if necessary.

3. Document the maintenance work.

Repair

Repair work is only allowed to be carried out by

specialist personnel or by the manufacturer. Only

genuine replacement parts must be used.

Disposal

ENVIRONMENT!

Risk of harm to the environment due to incor-

rect disposal of goods and packaging!

Incorrect disposal can harm the environment.

– Be sure to comply with the relevant national

guidelines and regulations.

–If you are not sure how to dispose of any-

thing in an environmentally friendly manner,

contact your local authorities or a specialist

disposal company.

Note: The sound attenuator has to be disassem-

bled for disposal.

If no take back (disposal) agreement with

TROX GmbH is in place, we recommend disposing

of the various materials as described below:

Fig. 4: Schematic illustration of the circular silencer

Maintenance

Circular silencer CA 9

No. Part Material/

waste dis-

posal code

Disposal

1 Casing, inner

duct and

spigot

Casing, inner

duct, spigot

and splitter

frame

Galvanised

sheet steel,

stainless

steel EAK

170405

Scrap and

metal recy-

cling

2 Lip seal,

cover fleece

Plastic EAK

170203

According to

EAK

3 Absorption

material

Mineral wool

EAK 170604

According to

EAK

EWC European Waste Catalogue

Maintenance

Circular silencer CA10

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