Application

Suitable for doors, walls and ducts.

Description

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. 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.

Features and benefits:

  • 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.

Test evidence:

Fire: AS1530.4: 2014. Fire: BS 476-20: 1987 and BS EN 1364-5: 2017. Smoke: BS 476-31.1: 1983 (shutterplate).

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.

Application:

Suitable for doors, walls and ducts.

General information

Size

See 'Options' below and insert requirements.

Finish

Silver as standard

Material

Z275 galvanized steel. Metal slats with an intumescent core. Electro mechanically operated smoke shutter mechanism

Uniclass 2015

Pr_30_59_94_32 Fire-resisting air transfer grilles with smoke shuttersPrimary

CAWS

L20/20 Wood flush doors

L20/230 Wood flush doors

L20/25 Wood panelled doors

L20/250 Wood panelled doors

L20/270 Wood doors

L20/280 Doors

L20/30 Wood doors

L20/410 Wood doorsets

L20/420 Wood doorsets

L20/430 Wood doorsets

L20/480 Doorsets

L20/55 Doorsets

P21/66 Door mounted air transfer grilles

P21/896 Door mounted fire resisting air transfer grilles

P21/897 Door mounted fire resisting air transfer grilles with smoke shutter

U90/360 Air transfer grilles

U90/360 Air transfer grilles

Specification data - Fire-resisting air transfer grilles with smoke shutters

Product Reference

LVH20S Fire Plus Smoke Resistant Air Transfer Grille

Size

See 'Options' below and insert requirements.

Accessories

None

Alarm Monitoring System (AMS) and battery backup.

Cover grille

Standard product features

Thickness:

47 mm.

Free area:

30% free area (approximately).

Material

Z275 galvanized steel. Metal slats with an intumescent core. Electro mechanically operated smoke shutter mechanism.

Finish:

Silver as standard.

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.

Product Options

Size:

200–600mm (in 50 mm increments).

Literature

Specialised Fire Resistant Door Hardware

Specialised Fire Resistant Door Hardware

Similar products from Lorient Polyproducts Ltd

LVH44S Fire Plus Smoke Resistant Air Transfer Grille

LVN20S Fire Plus Smoke Resistant Air Transfer Grille

LVV40S Fire Plus Smoke Resistant Air Transfer Grille