Regin SDD-OE65 (-RAC) Single tube smoke detector for duct mounting

OPTICAL SENSOR WITH RELAY OUTPUT & DUCT PROBE

The SDD range of smoke detectors is duct-mounted and for use in ventilation systems. They are constructed to meet the high demands of a modern fire installation.

✓ Optical ✓ Multiple detectors can be connected to a single control unit (does not apply to SDD-OE65-RAC) ✓ Service alarm signal available, with ABV unit ✓ The detector is bayonet-mounted to simplify service and maintenance ✓ Compact design ✓ RFI-protected (radio interferences)

SDD-OE65-RAC have a relay. The built-in relay enables the unit to independently trigger an alarm without a connection to a control unit.

A 540 mm aluminium venturi tube is delivered with the detector. The tube can be shortened to fit more duct sizes.

The detector housing has a window giving a clear view of the flow indicator and the alarm LED.

The detectors are approved according to EN54 and have been tested and approved by SBSC. The detectors used with the ABV units have a built-in service alarm function that detects dust and dirt accumulation, which inevitably occurs over time. When the degree of dirt reaches the level at which false alarms are a risk, a service alarm is triggered in the ABV unit, indicating that cleaning is required. The detectors should be tested and cleaned yearly to ensure proper function. The detectors’ functionality can be tested using test smoke. The cover can be cleaned with a vacuum cleaner.

The optical detector reacts to visible smoke particles (residues from combustion). It operates according to the reflection principle and consists of a measuring chamber with air inlets via a labyrinth that prevents ambient light from entering. An infrared LED and a photo transistor are placed in the measuring chamber. They are located so that the light from the LED doesn’t shine on the light-sensitive transistor. If smoke particles enter the measuring chamber, some of the light from the LED will be reflected by the particles and hit the photo transistor, which activates the alarm.

Features
Alarm indication
The detector has a red LED, clearly visible through the window on the housing. The LED is normally off and lights up when there is a fire alarm.

Flow indication
The detector has a built-in flow indicator with a red signal flag on the air inlet. During normal operation, it will be lifted by airflow, indicating airflow through the detector.

Technical data
Supply voltage, RAC model 24 V AC ± 15 %
Power consumption, RAC model 5 VA Relay,
RAC model Max 24 V AC / 2A or 24 V DC / 1A (Resistive load)
Current consumption, normal 10 mA
Current consumption during alarm 50 mA
Current consumption during service alarm 20 mA
Temperature range -20…+60 °C
Ambient humidity Max. 95% RH
Wind speed Up to 20 m/s
Mounting Duct
Protection class IP54
Smoke alarm Red LED
Service alarm Red LED on detector. Yellow LED on control unit.

Datasheet: sdd-oe65-rac_ps10187_en