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2451 Datasheet(PDF) 2 Page - Systemsensor advanced ideas. |
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2451 Datasheet(HTML) 2 Page - Systemsensor advanced ideas. |
2 / 4 page Page 2 A05-201-02 SAMPLING TUBE FILTERS CONDUIT HOLES DUCT DETECTOR HOUSING PC BOARD INSULATOR DUCT DETECTOR COVER SAMPLING TUBE MOUNTING SCREWS DETECTOR HEAD EXHAUST FILTER ADAPTER DETECTOR BASE INLET SAMPLING TUBE (SUPPLIED SEPARATELY) O-RINGS FOAM GASKETS HOUSING MOUNTING SCREWS TEST MAGNET TUBE END PLUG Exploded View of DH400ACDC Duct Detector Components Architectural/Engineering Specifications The air duct smoke detector shall be a System Sensor Model DH400ACDC Series Duct Smoke Detector. The detector housing shall be UL listed per UL 268A specifically for use in air handling systems. The detector shall operate at air velocities of 500 feet per minute to 4000 feet per minute. The detector housing shall be equipped with an integral mounting base capable of accommodating either photoelectronic or ionization detector heads. It shall be capable of local testing via magnetic switch or remote testing using the RTS451KEY Remote Test Station. The duct detector housing shall incorporate an airtight smoke chamber in compliance with UL 268A, Standard for Smoke Detectors for Duct Applications. The housing shall be capable of mounting to either rectangular or round ducts without adapter brackets. An integral filter system shall be included to reduce dust and residue effects on detector and housing, thereby reducing maintenance and servicing. Sampling tubes shall be installed after the housing is mounted to the duct by passing through the duct housing. Terminal connections shall be of the strip and clamp method suitable for 14–18 AWG wiring. Electrical Ratings – DH400ACDC Power Supply Voltage 20 - 29 VDC 24 VAC 50 - 60 Hz 120 VAC 50 - 60 Hz 220/240 VAC 50 - 60 Hz CURRENT REQUIREMENTS (USING NO ACCESSORIES) Max. standby current 25 mA 35 mA RMS 20 mA RMS 20 mA RMS Max. alarm current 95 mA 55 mA RMS 55 mA RMS 30 mA RMS CONTACT RATINGS Alarm initiation contacts (SPST) 2.0A @ 30 VAC/DC (0.6 power factor) Alarm auxiliary contacts (DPDT) 10A @ 30 VDC 10A @ 277 VAC (0.75 power factor) 240 VA @ 240 VAC (0.4 power factor) 1/8 HP @ 120 VAC 1/4 HP @ 240 VAC Trouble contacts (SPST) 0.3A @ 32 VDC (resistive) ACCESSORY CURRENT LOADS AT 24 VDC DEVICE APA451 PA400 RA400Z RTS451KEY STANDBY 12mA MAX 0mA 0mA 0mA* ALARM 30mA MAX 15mA MAX 7mA MAX 7mA MAX* ANY COMBINATION OF ACCESSORIES MAY BE USED SUCH THAT THE GIVEN CURRENT LOADS TOTAL: 100mA OR LESS IN THE STANDBY STATE, 150mA OR LESS IN THE ALARM STATE. *NOTE: WHEN INITIATING AN ALARM, THE RTS451 REQUIRES 71mA MAXIMUM IN PRE-ALARM AND 78mA MAXIMUM IN ALARM. NOMINAL STANDBY CURRENT IS 0mA. ALARM CURRENT IS 7mA MAXIMUM WHEN TEST MAGNET IS REMOVED. |
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