LVN25S Intumescent Air Transfer Grille
Verified by manufacturer 6 months ago
Certifire Certificate
Certificate type
High-performance non-vision fire and smoke air transfer grille.
Application
Suitable for FD30 and FD60 doors, greater than 50 mm thick. Must be installed in the vertical plane.
In applications where high levels of humidity or wetness are anticipated, contact the manufacturer's Technical Department for alternatives.
Description
High-performance non-vision fire and smoke air transfer grille.
Uses the same intumescent louvred slat configuration as the LVN25, but also incorporates an electro-mechanically operated smoke shutter mechanism.
Features and benefits:
- Can provide up to 60 minutes' fire and smoke resistance.
- Contains cold smoke and toxic gases remote from source of fire.
- Simple installation.
- Auto reset and failsafe.
- Safe low d.c. voltage.
- Status reporting and auto-cycling via Talkback Damper Control Monitor (DCM), specified separately.
- Optional audio warning facility.
- Connects to fire panel and/ or Building Management System (BMS).
- BMS alarm notification via Alarm Monitoring System (AMS).
- Nominal 5 mA current open/ closed
- Maximum 200 mA in operation.
- Allows bi-directional airflow.
- Louvred slats give privacy.
- Certifire approved CF 564.
General information
Color | Silver |
Finish | Smooth |
Material | PVC Steel |
Shape | Square Rectangle |
Length | Manufacturer guidanceHeight: 200mm - 400mm (in 50mm increments). |
Width | Manufacturer guidanceThickness: 2 pieces x 25mm |
Height | Manufacturer guidance200mm - 400mm (in 50mm increments). |
Uniclass | |
CAWS | P21/66 Door-mounted air transfer grilles P21/895 Door-mounted air transfer grilles P21/896 Door-mounted fire-resisting air transfer grilles |
Specification data - Fire-resisting air transfer grilles
Standard | Fire: To BS 476-20 and 22:1987; Smoke: To BS 476-31.1:1983 (shutterplate).Guidance for specification option: Smoke: BS 476-31.1:1983 (shutterplate). |
Third party certification | Certifire CF564. |
Category | Intumescent. |
Size | 198 x 198 mm.Guidance for specification option: Standard. 198 x 248 mm.198 x 298 mm.198 x 348 mm.198 x 398 mm.248 x 198 mm.248 x 248 mm.Guidance for specification option: Standard. 248 x 298 mm.248 x 348 mm.248 x 398 mm.298 x 198 mm.298 x 248 mm.298 x 298 mm.Guidance for specification option: Standard. 298 x 348 mm.298 x 398 mm.348 x 198 mm.348 x 248 mm.348 x 298 mm.348 x 348 mm.Guidance for specification option: Standard. 348 x 398 mm.398 x 198 mm.398 x 248 mm.398 x 298 mm.398 x 348 mm.398 x 398 mm.Guidance for specification option: Standard. Other.Guidance for specification option: Consult manufacturer for options and insert requirements. Manufacturer guidanceEach air transfer grille is manufactured 2 mm less than a nominal aperture size to provide clearance when installed in a duct or other aperture of the same nominal dimensions. e.g. a 198 x 198 mm nominal size air transfer grille will suit a 200 x 200 mm aperture. Thickness: 2 x 25-mm thick pieces. |
Fire resistance (minimum) | 60 minutes.Guidance for specification option: EI rating of 60 minutes in accordance with BS 476 (Test report: Applus 19/19940-1428). |
Material and finish | Rigid PVC slats with an intumescent core, steel flange. |
Colour | Silver. |
Execution | Manufacturer guidancePositional requirements:
|
Fixing | Screwed into door with an aperture lined with Lorient intumescent liner (B24402). |
Free area | 30% approx. |
Sustainability data
Country of product manufacture | United Kingdom |
Third party certifications
Certifire Certificate
Certifire CF564
Literature
Lorient Air Transfer Grille Product Selector
Lorient Air Transfer Grille Datasheets
Air Transfer Grille Installation Manual
Fire and Smoke Resistant Dampers / Air Transfer Grilles
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