Simplex 4098-XAD Duct Smoke Detection System

The Simplex 4098-XAD is an addressable duct smoke detector (IGF) that uses air-sampling technology combined with a TrueAlarm photoelectric smoke sensor. It is designed to detect smoke in HVAC ducts or hard-to-access areas. The unit features environmental compensation, airflow monitoring, replaceable dust filters, and remote test/maintenance capability, ensuring high reliability and convenient servicing.

Key Features

• Detects smoke in air ducts (not a replacement for open-area detectors).

• Airflow supervision: alerts when abnormal airflow is detected.

• Aspirator fan with 10 programmable speeds, LED bar-graph display.

• Replaceable air filter (recommended replacement every 12 months).

• Remote testing functions: smoke test, magnet test, or via remote test station 2098-9806.

• Status LED indicators (on housing or via remote).

• Compatible with external relay (4098-9843) for auxiliary equipment control.

• Dedicated 24VDC power supply, easy integration with fire alarm systems.

Main Models

• 4098-XAD-110: 1 detector + 1 sampling tube set.

• 4098-XAD-210: 2 detectors + 2 sampling tube sets (for ducts wider than 90 in / 2.3 m).

• 4098-XAD-100: 1-port version for open-area applications.

• 4098-XAD-200: 2-port version for open-area applications.

Accessories & Options

• Sampling tubes (27", 54", 90").

• Flexible tubing (25 ft or 50 ft).

• Water trap to prevent moisture/condensation.

• Remote LED (2098-9808) and Remote Test Station (2098-9806).

• Relay 4098-9843 + EOL resistor 4081-9008.

• Replacement filter 02-FL53.

Technical Specifications

• Power supply: 18–30 VDC, initial inrush current 680 mA.

• Fan current: 110–300 mA depending on speed.

• Supervision relay output: up to 15 relays, max distance 152 m.

• Rigid tubing: up to 25 m (duct applications) or 50 m (open-area applications).

• Flexible tubing: up to 15 m.

• Air velocity: 0–4000 ft/min (0–1220 m/min).

• Smoke sensitivity range:

  • Duct: 0.5–1.0 %/ft

  • Open area: 1.5–3.0 %/ft

• Operating temperature: 0–50 °C.

• Humidity: 10–95% RH, non-condensing.