Acoustic and Aeraulic T-piece branch connector: CP2A + seals
Connector
Acoustic and Aeraulic T-piece branch connector: CP2A + seals
Connector
The sealed CP2A branch connector provides a junction and accessibility to the vertical collector system and horizontal ducting, improves acoustic and aeraulic performance, while delivering class C airtight performance.
Acoustic and Aeraulic T-piece branch connector: CP2A + seals
The sealed acoustic and aeraulic T-piece connector (CP): galvanised steel accessory used to join the vertical collector system and horizontal ducting while delivering class C airtight performance, as per the requirements of DTU 68.1 and 68.2, accessibility to the vertical riser and horizontal ducting. It is specifically designed for risers opening out into attics or flat roofs of non-residential and multi-occupancy residential buildings, for which the airtight reading is made before the T-piece is installed (> 95% of cases). The sealed acoustic and aeraulic T-piece connector is fitted with a stop ring on the unit body to hold the plug in a stable position and limit the risk of leaks. The aeraulic properties of the CP2A reduce the pressure drop required by the fan and it is therefore possible to select a less powerful fan, which in turn generates less noise and consumes less energy.
The + products
- exclusive CP2A (ALDES patent) - reduced fan consumption,
- 35% less pressure loss compared to a standard CP,
- improved noise attenuation: 7 dB(A) on noise radiated from the fan (3 dB(A) better than a standard CP connector).
- reduced fan consumption,
- access to riser preserved.
- range available from diameter 125 to 400.
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performance of CP2A compared to standard CP connector:
- acoustic: acoustic foam B-s1,d0 offering high attenuation of fan noise (by 7 dB(A), or 3 dB(A) better than a standard CP),
- aeraulic: sheet metal deflector offering tool-free removal, reducing pressure losses by 35% or -7 Pa at 4 m/s.
- galvanised steel compliant with EN 10346 ensuring regularity of the coating.
- temperature range: - 30°C to 100°C,
- resistant to ageing (> 30 years), UV and ozone,
- material compliant with requirements of DTU 68.3: 2013-06 P1-1: “Mechanical Ventilation Installations”,
- M0 fire certification,
- class C airtight performance as per standard NF EN 12237.
- to slot in or remove an accessory, rotate it slightly in the duct,
- as an airtight seal is automatically provided by the ALDES seal, no need to use sealant or adhesive tape,
- for vertical installations especially, the use of self-tapping screws remains recommended,
- time savings in relation to ducting with standard accessories is in the range of 20 % (at least 15 to 30 seconds saved per junction for diameters 125 to 315, or at least 30 to 60 seconds saved for each accessory in these diameters),
- ALDES sealed accessories are specially designed to ensure easy connection / disconnection. The ALDES range offers class C airtight performance and low connection torque,
- if the air tightness reading is made after the T-piece connector is installed, use a CPT or CPT2A,
- installation requires a flat roof penetration sleeve: FT.
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to install a deflector in an existing CP T-piece:
- identify the type of T-piece installed: header diameter, external diameter (often marked on plug),
- use the appropriate deflector for the T-piece installed,
- remove the plug,
- position the lower part of the deflector on the bottom of the T-piece (galvanised part in contact with the airflow),
- bend the deflector to insert the upper part in the connector,
- replace the plug and ensure the seal is airtight.
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to remove a deflector for header servicing access:
- remove the plug,
- grasp and press the upper part of the deflector then withdraw it from the T-piece,
- remove the deflector and perform servicing operations,
- re-position the lower part of the deflector on the bottom of the T-piece (galvanised part in contact with the airflow),
- bend the deflector to insert the upper part in the connector,
- replace the plug and ensure the seal is airtight.
