LVH20S Fire Plus Smoke Resistant Air Transfer Grille

The LVH20S damper is a unique combination of intumescent slats to provide two hour fire resistance and excellent insulation properties together with a servo powered set of shutter plates that control cold and warm smoke.

Features and benefits:

• Ideal for low velocity air handling systems, it can be operated as a stand-alone unit or in multiple units.
• It can be interfaced with a fire alarm panel through the Lorient Talkback damper control system.
• Contains cold smoke plus toxic gases remote from source of fire.
• Simple installation.
• Auto reset plus failsafe.
• Safe low DC voltage.
• Status reporting plus auto-cycling via Talkback Damper Control Monitor (DCM).
• Optional audio warning facility.
• Connects to fire panel plus/or building management system (BMS).
• BMS alarm notification via Alarm Monitoring System (AMS).
• Nominal 5 mA current open/ closed.
• Max 200 mA in operation.
• Allows bi-directional airflow.
• Use with talkback damper control system. Optional Alarm Monitoring System (AMS) and battery backup. Optional cover grille.
• Other non-standard sizes may be available - consult the manufacturer for details.
• Performance: Can be used to provide up to 120 minutes resistance to fire and cold smoke. May provide 30 minutes insulation when used in conjunction with a cover grille.
• Orientation: LVH20S must be used in the vertical plane.
• Free area: 30% free area (approximately).
• Material: Z275 galvanized steel. Metal slats with an intumescent core. Electro mechanically operated smoke shutter mechanism.
• Fixing: Each damper is manufactured 5 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 195 x 195 mm nominal size damper will suit a 200 x 200 mm aperture. Screwed and bedded in Lorient intumescent sealant.