AAC125LPCWL – Rytons Cowled Super Acoustic LookRyt® AirCore®

General Details

AAC125LPCWL – Rytons Cowled Super Acoustic LookRyt AirCore

  • Retro-fitted combustion air vent with external cowl for boilers, stoves and fires.
  • Cowl protects against excessive weather conditions and alleviates air blasts through the cavity.
  • Use in noisy areas to reduce the amount of noise entering the building for a more peaceful environment.
  • Unique draught reducing panel disperses air evenly for improved comfort.
  • Paint or wallpaper the panel to match room décor for a discreet appearance.
  • External water baffle prevents transfer of water across the cavity.
  • Cowl and external grille U.V. stabilised to slow down the effects of sunlight.
  • HETAS approved for use with solid fuel appliances.
  • LookRyt Panel: Patent No. GB 2490138.

Sound Reduction & Equivalent Area:

  • Sound reduced by 45 dB (Dn,e,w) (tested by BRE Acoustics).
  • 7,200mm² (72cm²) equivalent area (tested to BS EN 13141-1:2004 and independently verified by the BRE).

Size:

  • Cowl: 217mm L x 210mm H x 93mm D.
  • External grille: 166mm L x 160mm H.
  • Tube: 127mm (5″) Dia. x 358mm L.
  • LookRyt panel: 172mm L x 172mm H.

Colours:

  • Terracotta: AAC125LPTCWL.
  • Buff/Sand: AAC125LPBCWL.
  • White: AAC125LPWCWL.
  • LookRyt panel: Magnolia (may be painted or wallpapered to match décor).

Composition:

  • Cowl and external grille: U.V. stabilised high impact polystyrene.
  • Tube: High impact polystyrene containing sound absorbent foam lining (tube contains recycled plastic). Softening point: 70ºC (unlined). Melting point: 120ºC (unlined).
  • LookRyt panel: High impact styrene. Melting point: 160-180ºC (unlined).

Handling Information:

  • Box quantity: 1 set.
  • Box size: 44cm W x 19cm H x 22.5cm D.
  • Box weight: 0.859kg.

Reference Material:

  • Measurement of airborne sound insulation was made in accordance with BS EN 20140-10: 1992.
  • Single number quantities were calculated in accordance with BS EN ISO 717-1:1997.
  • Equivalent area tested to BS EN 13141-1:2004 and independently verified by the BRE.
  • Also refer to: The Building Regulations, Approved Document J,
  • The Building (Scotland) Regulations, Mandatory Standard 3.21,
  • The Building Regulations (Northern Ireland), Technical Booklet L,
  • British Standard BS 5440-2,
  • British Standard BS 5871-3 (decorative fuel effect gas fires).

Questions & Answers:

  • Will installing more than one vent to achieve a greater free area have an effect on the acoustic performance? We asked the BRE who said “The performance of the ventilator will not degrade when you put in more of them. The composite sound insulation performance of the façade will degrade if you increase the number of ventilators, assuming that they are one of the weaker links.”
  • Will the vent reduce sound from inside to outside as well as from outside to inside? The BRE has advised us that it’s reasonable to assume that ‘reciprocity’ applies to the vents. That is, the third octave values for sound reduction index are the same in both directions (out to in and in to out).
BRE Test Report

BRE Test Report Rytons Cowled Super Acoustic LookRyt AirCore AAC125LPCWL

Fitting Instruction Sheet