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0745 FANTECH attenuators and acoustic louvres - NATSPEC

By Florence Murray,2014-11-22 07:02
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0745 FANTECH attenuators and acoustic louvres - NATSPEC

MECHANICAL 错误?使用“开始”选项卡将 Heading 1 应用于要在此处显示的文字。

0745 FANTECH ATTENUATORS AND ACOUSTIC LOUVRES

    1 GENERAL

    1.1 RESPONSIBILITIES

    General

    General: Provide FANTECH attenuators and acoustic louvres as documented. 1.2 COMPANY CONTACTS

    Fantech technical contacts

    Website: www.fantech.com.au.

    1.3 CROSS REFERENCES

    General

    Requirement: Conform to the following worksection(s):

    - General requirements.

    - Ductwork.

    Manufacturer's documents

    Fantech documents relating to this worksection are:

    - Fans by Fantech catalogue and website provide detailed attenuator and acoustic louvre product information.

    - The Fans by Fantech Product Selection Suite CD has Acoustic and Silencer modules that enable acoustic analysis and selection of suitable products

    Copies of the catalogue and CD may be requested from Fantech.

    1.4 SUBMISSIONS

    Product data

    General: Submit type test data from an Australian Registered testing authority as follows: - Duct attenuators: Broad band sound insertion loss and generated noise level to BS EN ISO 7235. Include air flow resistance.

    - Acoustic louvres: Sound reduction index to AS 1191 and AS/NZS ISO 717.1. Include air flow resistance. Test reports meeting BCA requirements for test to AS/NZS 1276.1 may be submitted in lieu of test reports to AS/NZS ISO 717.1.

    2 PRODUCTS

    2.1 GENERAL

    Product substitution

    Other attenuators and acoustic louvres: Conform to SUBMISSIONS, Substitutions in the General

    requirements worksection.

    Manufacture

    Supply: Provide only attenuators and acoustic louvres manufactured, type-tested and supplied by a specialist supplier.

    Fire hazard properties

    General: Fire hazard indices for all materials when tested in conformance with AS/NZS 1530.3: - Spread of flame index: 0.

    - Smoke developed index: ? 3.

    Facing materials when tested to AS 1530.2:

    - Flammability index: ? 5.

     ? NATSPEC (Apr 12) 1 [insert date]

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2.2 DUCT ATTENUATORS

    Selection

    Proprietary item: Provide Fantech products as follows:

    - Circular: CC, circular or Q-Seal series.

    - Rectangular: RS, RT or Q-Seal series.

    Features: If documented, provide Q-Seal silencers.

    Construction

    Type: Rectangular or circular, with or without internal pod.

    Casing: Metallic-coated sheet steel case stiffened to meet the functional criteria of AS 4254 Section 4. Provide welded end flanges conforming to Ductwork or proprietary riveted flanges as appropriate to the size of the silencer.

    Splitters: Conform to the following:

    - Fill: Heavy density acoustic infill with factory applied tissue facing.

    - Waterproofing: Wrap insulation with polyester film. Seal edges with aluminium foil laminate tape. - Sheathing: Provide perforated metallic-coated sheet steel sheathing over the fill, 0.6 mm thick on the sides and 1.0 mm thick at bull-nose ends.

    Finish: Clean weld areas and touch up with a zinc rich primer, wire brush generally and prime. 2.3 ACOUSTIC LOUVRES

    Selection

    Proprietary item: Provide Fantech Sound Bar louvres SBL1 and SBL2 series.

    Features: Provide acoustic louvres having acoustic performance based on tests conducted in Australia to AS 1191.

    Construction

    General: Folded sheet steel or channel frame fully welded at each corner, with acoustic perforated blades filled with inert non-combustible acoustic material. Provide factory applied tissue facing to acoustic fill. Provide stainless steel fixings for external applications.

    Weatherproofing: Provide a raised lip on the louvre elements to prevent the ingress of water. Impervious lining: If documented, provide Fantech Q-Seal acoustic louvres.

    Materials:

    - Steel: 1.2 mm metallic-coated sheet steel.

    - Aluminium: 2 mm grade 5005 aluminium sheet, powder coated.

    Screens: Provide metallic coated steel wire or PVC-U mesh screens behind louvres to prevent the entry of vermin, birds, rodents and wind blown extraneous material such as leaves and papers. 2.4 CROSS-TALK ATTENUATORS

    Selection

    Proprietary item: Provide Fantech Cross-talk attenuators types CTS, CTL, CTU or CTZ.

    Features: Provide silencers with performance quoted as airborne sound transmission loss to AS 1191. Installation

    General: Provide an airtight acoustic seal between the attenuator and the wall or ceiling in which it is mounted.

    Grilles: Provide grilles over visible openings conforming to the Air grilles worksection.

    3 SELECTIONS

    3.1 SOUND ATTENUATOR SCHEDULES

    Duct attenuator schedule

    Designation SA 1 SA 2 SA 3

    System

    Make Fantech Fantech Fantech

     ? NATSPEC (Apr 12) 2 [insert date]

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    Designation SA 1 SA 2 SA 3 Fantech model Fantech Q-Seal required (yes/no)

    Air quantity (L/s) Maximum pressure drop (Pa)

    Type Approximate diameter x length or width x height x

    length

    Insertion loss at above air flow (dB)

     63 Hz 125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz 8000 Hz

Acoustic louvre schedule

    Designation SA 1 SA 2 SA 3 System Make Fantech Fantech Fantech Fantech model Fantech Q-Seal required (yes/no)

    Air quantity (L/s) Maximum pressure drop (Pa)

    Type Approximate diameter x length or width x height x

    depth

    Insertion loss at above air flow (dB):

     63 Hz 125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz

     ? NATSPEC (Apr 12) 3 [insert date]

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    Designation SA 1 SA 2 SA 3 8000 Hz

    Cross-talk attenuator schedule Designation CTA 1 CTA 2 CTA 3 Location Make Fantech Fantech Fantech Fantech model Air quantity (L/s) Maximum pressure drop (Pa)

    Approximate width x depth x length

    (excluding spigots)

    Transmission loss at above air flow (dB)

     125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz

     ? NATSPEC (Apr 12) 4 [insert date]

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