TROX A00000071256 Circular Silencer Instruction Manual
- May 15, 2024
- TROX
Table of Contents
TROX A00000071256 Circular Silencer
Specifications
- Product: Circular silencer CF
- Manufacturer : TROX GmbH
- Usage: Reduce noise in circular ducts of ventilation and air conditioning systems
Product Usage Instructions
Installation
Before installing the circular silencer, ensure that the extract air system in commercial kitchens has been cleaned with high-efficiency aerosol separators as per VDI 2052 guidelines.
Transport, Storage, and Packaging
Personal Protective Equipment
- Industrial safety helmet: Protects the head from falling objects
- Protective gloves: Protect hands from various hazards
- Safety shoes: Ensure foot protection during handling
Delivery Check
Check the delivered items for any transport damage or missing components. Contact the shipping company and supplier immediately if any issues are found.
Transport on Site
- Handle the product with care during unloading and moving.
- Follow packaging symbols and information.
- Use appropriate lifting and transport equipment.
- Secure the load properly to prevent accidents.
- Avoid moving heavy items alone to prevent injuries.
Storage
- Store the product in its original packaging.
- Protect it from weather conditions, humidity, and dust.
(FAQ)
- Q: Can the circular silencer be used in commercial kitchens without prior cleaning of extracted air?
- A : No, it is recommended to clean the extracted air using high-efficiency aerosol separators as specified in VDI 2052 beforeusing the circular silencer in commercial kitchens.
- Q: What personal protective equipment is required for handling the circular silencer?
- A : Personal protective equipment such as an industrial safety helmet, protective gloves, and safety shoes should be worn to ensure safety during handling and installation.
Product overview
Fig. 1: Schematic illustration, CF
- Case of the silencer
- Spigot
- Lip seal
Important notes
Safety
Correct use
Circular silencers are used to reduce noise in the circular ducts of
ventilation and air conditioning systems within closed rooms. For the
reduction of air-regenerated noise of air terminal units and mechanical self-
powered controllers, 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-
efficiency aerosol separators; see VDI 2052.
Incorrect use
WARNING!
The danger of injury or risk of damage to property due to 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 carried out by individuals with
the qualifications, 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.
Transport, storage and packaging
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, abrasions, 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 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
InstallationOperation
Installation
General installation information Personnel:
Personnel
- Specialized personnel
Protective equipment
- Protective gloves
- Industrial safety helmet
- Safety shoes
CAUTION
The danger of injury from sharp edges, sharp corners 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
Installation information for circular silencer
General installation information
- When designing and constructing ventilation and air conditioning systems, take into account the requirements of VDI6022, in particular:
- Hygienic, clean installation of all components and their air distribution surfaces
- Inspection and cleaning options by planning 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 separately.
- Only use approved and sufficiently dimensioned 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
- The smallest permissible bending radius of the circular silencer is 3 × outer diameter ØD3
Fig. 2: Installation example for circular silencer
- Duct
- Circular silencers
- Drilling screw for affixing to the ducting
- Pipe clamp
- Suspension, e.g. with threaded rod
Fig. 3: Examples of fixings for circular units
- Fixing to pipe clamps
- Fixing to suspension element
- When installing the circular silencer, choose a load-bearing structure that will support the entire weight of the circular silencer construction.
- 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 consideration (suspensions and supports for air ducts
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. Installation can be carried out without a minimum distance to the control component
Connecting the air 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.
Technical data
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 tightness of the duct system,
suitable sound attenuators and duct components must been selected. In
addition, the following should be observed:
- Proper and expert assembly
- Provide seals
- Establish the cable fastening (suspension/support)
Circular ducting – metal
Spigot without lip seal
- Plug-in mounting on ducting in accordance with EN 1506 or EN 13180.
- Fixing and sealing with a 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
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
Technical data
General data
| Item | Value |
|---|---|
| Nominal sizes | 80 – 400 mm |
| Operating pressure | Minimum -750 Pa |
2000 Pa max.
Airflow velocity| ≤ 20 m/s
- No corrosion resistance according to ISO 12944-2 has been specified for circular silencers.
Item| Value
---|---
Air temperature| -30 °C to 90 °C
Relative humidity| ≤ 80%, no condensation
Casing leakage according to EN 15727| Class D
Materials of circular silencer*| AlMg3 (aluminium) - No corrosion resistance according to ISO 12944-2 has been specified for circular silencers.
Dimensions and weights CF
Dimensions
| nominal size | ØD | ØD3 (CF-025) | ØD3 (CF-050) |
|---|
[mm]
80| 79| 135| 192
100| 99| 160| 212
125| 124| 191| 236
160| 159| 221| 271
200| 199| 261| 311
250| 249| 311| 366
315| 314| 376| 426
400| 399| 461| 511
Lengths
| Nominal length | L | L1 |
|---|
[mm]
500| 650| 500
1000| 1150| 1000
1500| 1650| 1500
2000| 2150| 2000
CF/…/AS2
Dimensions
| nominal size | ØD | ØD3 (CF-025) | ØD3 (CF-050) |
|---|
[mm]
80| 80| 135| 192
100| 100| 160| 212
125| 125| 191| 236
160| 160| 221| 271
200| 200| 261| 311
250| 250| 311| 366
315| 315| 376| 426
400| 400| 461| 511
Lengths
| Nominal length | L | L1 |
|---|
[mm]
500| 650| 500
1000| 1150| 1000
1500| 1650| 1500
2000| 2150| 2000
CF/…/BK2
Dimensions
| nominal size | ØD | ØD2 | ØD3 (CF-025) | ØD3 (CF-050) |
|---|
[mm]
80| 79| 93| 135| 192
100| 99| 113| 160| 212
125| 124| 138| 191| 236
160| 159| 173| 221| 271
200| 199| 213| 261| 311
250| 249| 263| 311| 366
315| 314| 328| 376| 426
400| 399| 413| 461| 511
Lengths
| Nominal length | L | L1 |
|---|
[mm]
500| 638| 500
1000| 1138| 1000
1500| 1638| 1500
2000| 2138| 2000
Weights
nominal size
| CF025| CF050
---|---|---
500| 1000| 1500| 2000| 500| 1000| 1500|
2000
| | | | | | |
80| 1| 1| 2| 2| 1| 2| 2| 3
100| 1| 1| 2| 2| 1| 2| 3| 3
125| 1| 2| 2| 3| 1| 2| 3| 4
160| 1| 2| 3| 3| 1| 2| 3| 4
Commissioning
nominal size
| CF025| CF050
---|---|---
500| 1000| 1500| 2000| 500| 1000| 1500|
2000
| | | | | | |
200| 1| 2| 3| 4| 2| 3| 4| 5
250| 2| 3| 4| 5| 2| 4| 5| 6
315| 2| 3| 5| 6| 2| 4| 6| 7
400| 3| 4| 6| 7| 3| 5| 7| 9
Commissioning Commissioning and operation
Personnel:
- Specialized personnel
- Before you start commissioning:
- Check the proper installation of the circular silencers.
- Ensure that all sound attenuators are clean and free from residues and foreign matter
Commissioning
Code of good practice for commissioning 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,
contractually agreed services between HVAC contractors, system owners and
installation engineers. The standard describes the essential commissioning
steps of the completeness check, function check, function measurement as well
as report generation and handover
Operation
Once commissioning has been completed, the circular 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
maintenance 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 under 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
- Remove contamination that affects the func-tion of the circular silencer.
- Check all screws for firm seating and retighten them, if necessary.
- 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.
Maintenance
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 anything in an environmentally friendly manner, contact your local authorities or a specialist disposal company.
Note: The sound attenuator has to be disassembled 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
| No. | Part | Material/ waste dis-postal code | Disposal |
|---|---|---|---|
| 1 | Casing, inner duct and spigot | Aluminium EAK 170402 | Scrap and metal |
recycling
2| Lip seal, cover fleece| Plastic EAK 170203| According to EAK
3| Absorption material| Mineral wool EAK 170604| According to EAK
4| Adhesive tape| Waste plastic EAK 150102| According to EAK
EWC European Waste Catalogue
contact
- TROX GmbH
- Heinrich-Trox-Platz 47504 Neukirchen-Vluyn, Ger-many Germany
- +49 (0) 2845 202-0
- +49 (0) 2845 202-265
- E-mail: trox@trox.de
- www.troxtechnik.com