Regin SDD-OE65(-RAC) Smoke Detector for Duct Mounting

Safety Precautions

⚠️ Caution! Read and understand the instruction before using the product.

⚠️ Caution! Ensure that the installation complies with local safety regulations.

⚠️ Caution! Before installation or maintenance, the power supply should first be disconnected. Installation or maintenance of this unit should only be carried out by qualified personnel. The manufacturer is not responsible for any eventual damage or injury caused by inadequate skills during installation, or through removal of or deactivation of any safety devices.

Product Overview

The Regin SDD-OE65 is a smoke detector designed for duct mounting. It is available in two types: with or without a relay.

The SDD-OE65 connects to Regin's ABV control units via a two-wire current loop. The SDD-OE65-RAC features a built-in relay and is designed for independent alarm operation, not for connection to ABV control units.

Functionality

The detector housing includes a window providing a clear view of the flow indicator and the alarm LED. The alarm LED illuminates when a fire alarm is active, and is normally off.

Service Alarm

The SDD-OE65 incorporates a service alarm function to detect dust and dirt accumulation. When contamination reaches a level that risks false alarms, a service alarm is triggered. This is indicated by a red LED on the detector and a yellow LED on the connected control unit (e.g., ABV-S-300/D or ABV24-S-300/D). Cleaning is required when this alarm is active.

Flow Indication

A built-in flow indicator with a red signal flag is located at the air inlet. During normal operation, the airflow lifts this flag, indicating that air is passing through the detector.

Installation

The detector must be mounted at least three duct widths away from duct bends and fresh air inlets. The mounting holder is designed to fit directly onto round ducts.

Mounting Steps:

1. Drill a hole for the venturi tube in the duct (Ø 30 mm).
2. Remove the housing lid and the bayonet-mounted detector head.
3. Mount the venturi tube: Remove the screw from the tube's open end, insert the tube into the hole in the housing's bottom. Align the tube's holes with the housing's longitudinal axis. Fasten the screw through the PC-board.
4. Replace the detector head.
5. Temporarily replace the lid so the detector head's LED is visible through the window. Insert the tube through the duct hole and orient the unit so the arrows on the lid point in the flow direction.
6. Fasten the unit to the duct using the mounting "wings". These wings can be bent to fit the curvature of round ducts.

For insulated ducts, the mounting plate TDS is available as an accessory.

Venturi Tube Adjustment:

The venturi tube has lips that fit the housing's tube holder. For smaller ducts, the tube can be shortened by removing the end cap and gasket, cutting the tube at a right angle, and re-mounting the gasket and plate. After re-installation, check the flow indicator to ensure airflow.

A longer venturi tube can be ordered for larger ventilation ducts.

If the detector needs to be mounted at a distance from the duct (e.g., due to insulation), use the mounting plate TDS. A distance bushing for mounting on the venturi tube is included with the TDS plate.

Wiring

SDD-OE65: The detector is wired to the control unit via a two-wire current loop. The loop is closed by connecting the supplied 2.2 kΩ end resistor. If the loop contains more than one detector, the end resistor should only be mounted in the last detector in the loop. If the loop lacks an end resistor or has more than one, the control unit will trigger an alarm.

SDD-OE65-RAC: These models are not to be connected to Regin's control units ABV... They operate independently using their built-in relay.

Wiring Diagram Description:

The wiring diagram shows the connection between an ABV control unit and the SDD detector. The ABV unit is connected via terminals 7 through 12, while the SDD detector uses terminals 1 through 5. A 2.2 kΩ end resistor (indicated by '1' in the diagram) is used to close the current loop, typically installed at the final detector in a series configuration.

Features

Alarm Indication

A red LED on the detector housing is visible through a window. It is normally off and lights up during a fire alarm.

Resetting Alarms:

• For SDD-OE65: Press the RESET button on the ABV control unit or momentarily cut the power supply.
• For SDD-OE65-RAC: Momentarily cut the power supply.

Service Alarm (not -RAC model)

A red LED on the detector and a yellow LED on the connected ABV control unit indicate a service alarm due to contamination. The detector requires cleaning, and the service alarm resets upon re-installation after cleaning.

Function Test

Test the detector using approved test gas (available from Regin). A red plastic plug on the lid simplifies access for testing. Avoid spraying gas directly onto the detector head; use small amounts to prevent contamination.

Maintenance

The detector should be tested and cleaned annually to ensure proper function. Cleaning of the venturi tubes, housing, and exterior of the detector head can be done with a vacuum cleaner.

ℹ️ Note! Do not disassemble the detector head for cleaning.

Technical Data

This product carries the CE-mark. More information is available at www.regincontrols.com.

Contact Information

AB Regin

Box 116, 428 22 Kållered, Sweden

Tel: +46 31 720 02 00

Fax: +46 31 720 02 50

Email: info@regincontrols.com

Website: www.regincontrols.com