Description
Item Description:
The VESDA VLS is similar to the flagship VESDA VLP aspirating smoke detector but also includes a valve mechanism in the inlet manifold and software to control the airflow from the four sectors (pipes). This configuration enables a single VESDA zone to be divided into four separate sectors, for example, distinguishing between separate voids within a room. The VLS locates the origin of smoke by identifying the first sector (pipe) with the highest level of smoke and then continues to sample from all sectors to monitor fire growth. The VLS provides four alarm levels for each individual pipe (Alert, Action, Fire 1 and Fire 2). Sector factors (sensitivity) can be set individually to ensure the optimal alarm thresholds are applied for each sector. An extra LED indicates when the first alarm sector has been established.
Product Specs:
| Brand | Xtralis |
| MPN | VLS-314 |
| Model | VLS |
| Supply Voltage | 18-30 VDC |
| Power Consumption @ 24 VDC | No Display or Programmer Aspirator @ 3000 rpm: Quiescent – Power 5.8 W, Current 240 mA With Alarm – Power 6.24 W, Current 260 mA Aspirator @ 4200 rpm: Quiescent – Power 6.72 W, Current 280 mA With Alarm – Power 7.2 W, Current 300 mA |
| Dimensions (WHD) | 350 mm x 225 mm x 125 mm (13.8 in x 8.9 in x 4.9 in) |
| Weight | 4.0 kg (9 lbs) including Display and Programmer modules |
| Operating conditions | Tested to: -10°C to 55°C* (14°F to 131°F) Detector Ambient: 0°C to 39°C* (32° to 103°F) (Recommended) Sampled Air: -20° to 60°C* (-4° to 140°F) Humidity: 10% to 95% RH, non-condensing Please consult your Xtralis office for operation outside these parameters or where sampled air is continually above 0.05% obs/m (0.015% obs/ft) under normal operating conditions. * Product UL listed for use from 0°C to 38°C (32°F to 104°F) |
| Storage conditions (non-operational) | Battery life: Up to 2 years Humidity: Dry (<95%) Temperature: 0° to 85° C (32° to 185°F) Must not exposed to sunlight or other radiation sources |
| Sampling network | Maximum length per pipe: 100m (328 ft) Aggregate pipe length: 200 m (656 ft) Minimum flow per pipe: 15 liters/min. Pipe Modelling Design Tool: ASPIRE™ These pipe lengths represent best practice for systems with single pipe runs on each port (no branching). For longer and/or more complex pipe arrangements, predictions of EN 54-20 compliance are determined using ASPIRE. |
| Area Coverage | Up to 2000 m2 (21520 sq. ft.) depending on local codes and standards |
| Pipe Size | External Diameter 25 mm (1 in) Internal Diameter 15–21 mm (9/16 in–7/8 in) |
| Programmable Relays | 7 or 12 Relays option Contacts rated 2 A @ 30 VDC Default: 7 Relays: NO/NC contacts Alert, Action, Fire 1, Fire 2, Maintenance, Urgent Fault & Isolate Default: 12 Relays: 10 x NO, 2 x NO/NC contacts Alert, Action, Fire 1, Fire 2, Maintenance, Urgent Fault & Isolate, First Alarm Sector 1 to 4 and Scan |
| IP Rating | IP30 |
| Cable access | 8 x 25 mm (1 in) knockouts in various positions |
| Cable termination | Screw terminals 0.2–2.5 sq mm (30–12 AWG) |
| Sensitivity Range | 0.005%–20% obs/m (0.0016%–6.25% obs/ft) |
| Alarm Threshold Setting Range | Alert: 0.005%–1.990% obs/m (0.0016%–0.6218% obs/ft) Action: 0.010%–1.995% obs/m (0.0031%–0.6234% obs/ft) Fire 1: 0.015%–2.00% obs/m (0.0046%–0.625% obs/ft) Fire 2: 0.020%–20.00% obs/m (0.0063%–6.25% obs/ft)* *Limited to 12% obs/m (4% obs/ft) in UL mode |
| Software Features | Event Log: Up to 18,000 events stored on FIFO basis. AutoLearn: Minimum 15 minutes, maximum 15 days. Recommended minimum period 1 day. During AutoLearn thresholds are NOT changed from pre-set values. Referencing: Compensation for external ambient conditions. Four Alarm Levels (per sector pipe): Alert, Action, Fire 1 & Fire 2. Two Fault Warning Levels: Maintenance and Major fault. Software Programmable Relays: 7 or 12. Maintenance Aids: Filter & Flow monitoring. Event reporting via VESDAnet or Event Log. Adaptive Scan Threshold: Detector selects the appropriate scan threshold automatically. |
