OP921 SIEMENS | Alldatasheet
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Smart Infrastructure - Building Products usa.siemens.com/fire Cerberus® PRO Detectors and Peripherals Photoelectric Smoke Detector [with ISOtechnologyTM] Model OP921 Model OP921 Photoelectric Smoke Detector Architect & Engineer Specifications UL 268 7th Edition Listed Built-in ISOtechnologyTM 252 Isolation devices per SLC Each detector is self -testing: - Self-monitored for sensitivity with UL Listed limits - complete diagnostics performed every 10 seconds Compatible with Model 8720 | DPU (device programmer / loop tester) Polarity insensitive via SureWireTM technology Functions with Model DB -11–series mounting bases Tri-color detector-status light-emitting diode (LED) with 360 ° view Field-selectable application-sensitivity profiles Remote sensitivity- measurement capability Utilizes advanced , microprocessor-based signal processing Extended temperature-and-humidity operating range Automatic environment compensation Superior electromagnetic interference (EMI) and radio-frequency interference (RFI) immunity Restriction of Hazardous Substances (RoHS compliant) UL Listed | FM, CSFM Approved - UL 268: \Open Area Smoke Detection ’ - UL 268A (Duct) - \In-duct housing’ use - UL 268A (Duct) - \`Direct-in-Duct’ use - ULC-S529: ‘System Smoke Detector’ - ULC-S530: ‘Heat Actuated Fire Detection’ - FM 3230 - CSFM | File: 7272 -0067:0258 Product Overview The Photoelectric Smoke Detector (Model OP921) uses state-of-the-art microcontroller circuitry and surface -mount technology for maximum reliability. Model OP921 incorporates an optical sensor using a light-scattering detection principle. The device utilizes advanced software algorithms to analyze the signals provid ing highly stable and accurate smoke detection. Model OP921 is UL 268 7th edition listed incorporating advanced built -in ISOtechnologyTM - True Class -X SLC operation (use is optional) greatly improving system reliability and circuit integrity while providing advanced addressable fault finding. Each detector fits into one (1) wall -or-ceiling footprint, and only occupies one (1) address on the signal-line circuit (SLC) Model OP921 is a plug-in, two-wire, addressable photoelectric smoke detector whose value is increased with built -in ISOtechnology feature. Model OP921 is Underwriters’ Laboratories Listed [UL268A Listed for direct in-air duct usage]. Each detector utilizes a dust -resistant photoelectric smoke chamber and microprocessor-based electronics with a low -profile plastic housing. Every Mo del OP921 fire detector is shipped with a protective dust cover. Operation Model OP921 is a wide-spectrum, photoelectric smoke detector that incorporates an infrared light-emitting diode (IRLED), as well as a light -sensing photodiode. Under normal conditi ons, light transmitted by the LED is directed away from the photodiode and scattered through the smoke chamber in a controlled pattern. The smoke chamber is designed to manage light dissipation and extraneous reflections from dust particles or other non-smoke, airborne contaminants in such a way as to maintain stable, consistent detector operation. When smoke enters the detector chamber, light emitted from the IRLED is scattered by the smoke particles and is received by the photodiode (see: images on page 2).
Smart Infrastructure - Building Products –2– usa.siemens.com/fire Sensitivity Settings Application Parameter Sets Model OP921 provides (2) pre-programmed sensitivity parameter sets that can be selected by the Siemens fire-alarm control panel in order to match the expected application or environmental conditions:
- Standard
- Air-Duct Standard: This application parameter set, which is ideal for normal office | hotel- lobby-type applications, is the default setting. Air-Duct: This application parameter set is used when the detector is used a UL268A (DI) compliant, direct in-air duct application without a duct housing. Model OP921 does not require a field sensitivity test. Model OP921 is UL Listed as a self -testing device and complies with NFPA 72 as a self -monitoring detector and control- panel arrangement. This parameter set is a lso used when Model OP921 is used in air -duct housings (Models FDBZ492 and FDBZ492-HR). A quick visual inspection is sufficient to indicate the condition of Model OP921 at any time. If more detailed information is required, a printed report can be provid ed from the compatible FACP, indicating the status and settings assigned to each individual detector. When Model OP921 moves to \`Alarm’ mode, the detector will flash RED and continue flashing until the system is reset at the FACP. At that same time, an y user-defined, system -alarm functions programmed into the system are activated. Model OP921 contains a tri -color LED indicator, capable of flashing any one (1) of three (3) distinct colors: GREEN | YELLOW | RED. During each flash interval, the microprocessor -based detector monitors the following scenarios:
- Smoke sensitivity is within the range indicated on the nameplate label
- Smoke in its sensing chamber
- Internal sensors and electronics are functional Based on the results of the monitoring, the LED indicator flashes the following: denotes LED can be turned OFF Please follow the corresponding description of the panel used. FLASH COLOR CONDITION FLASH INTERVAL [in seconds] GREEN: Normal supervisory operation. Smoke sensitivity is within rated limits. 10 YELLOW: Detector is in trouble and needs replacement. 4 RED: \`Alarm’ condition 1 NO FLASH: Detector is not powered. – Model OP921 1. Labyrinth 2. Optical transmitter 3. Optical receiver 1. Dust cover 2. Photoelectric smoke detector 2
Smart Infrastructure - Building Products –3– usa.siemens.com/fire A quick visual inspection is sufficient to indicate the condition of the detector at any time. If more detailed information is required, a printed report ca n be provided from the respective Cerberus PRO Modular | FireFinder XLS/V | FC/FV9 –series FACP that indicates the status and settings assigned to each individual detector. Installation All Model OP921 intelligent, addressable detectors use a surface- mounting base (Model DB -11 or DB -11E), which mounts on a 4 -inch (10.2 cm.) octagonal, square or single -gang electrical back box. The base utilizes screw -clamp contacts for electrical connections and self-wiping contacts for increased reliability. The Model DB-11 detector base can be used with the optional Siemens Model LK-11 detector locking kit, which contains 50 detector locks and an installation tool to prevent unauthorized removal of the detector head. Model DB-11 has aesthetically conducive plugs to cover the outer mounting-screw holes. Model OP921 may be installed on the same initiating circuit with the Siemens Model \`H’-series detectors [when used with Cerberus PRO Modular | FireFinder XLS/V | FC/FV9–series FACPs] – Each detector, which is shipped with a protective dust cover, consists of the following:
- Built-in ISOtechnology for True-Class-X SLC performance
- Dust-resistant photoelectric chamber
- Microprocessor-based electronics with a low-profile plastic housing All Model OP921 intelligent, addressable detectors are approved for operation with the Underwriters’ Laboratories-specified temperature range of 32° to 100°F (0° to 38°C). (See: installation manual P/N ─ A6V10323928 for further details) Application Data Installation of Model OP921 smoke detectors require a two -wire circuit. In many retrofit cases, existing wiring may be used. \
T -tapping’ is permitted only for Style 4 (Class B) wiring. Model OP921 is polarity insensitive, which can greatly reduce installation and debugging times. When operating in NFPA 72 Class-X applications SLC polarity must be maintained to support u p to 252 isolation ready devices per loop. When used in mixed mode a maximum of 30 non -isolated devices between isolation devices (wired in polarity-insensitive mode). See control panel install document for further details. Model OP921 detectors can be applied within the maximum 30 -feet center spacing (900 sq. ft. areas) as referenced in NFPA 72. This application guideline is based on ideal conditions − specifically, smooth ceiling s urfaces, minimal air movement, and no physical obstructions between potential fire sources and the actual detector. Do not mount detectors in close proximity to ventilation or heating and air conditioning outlets. Exposed joists or beamed ceilings may also affect safe spacing limitations for detectors. Should questions arise regarding detector placement, observe NFPA 72 guidelines. Good fire- protection-system engineering and common sense dictate how and when fire detectors are installed and used. Contact your local Siemens − Fire Safety distributor or sales office whenever you need assistance applying Model OP921 in unusual applications. Be sure to follow NFPA guidelines and UL Listed / ULC Listed installation instructions − included with every Siemens − Fire Safety detector − and local codes as for all fire protection equipment. Field-Device Programmer / Test Unit Model OP921 is compatible with the Siemens field -device programmer / test unit (Model 8720 | DPU), which is a compact, portable menu -driven accessory for electronica lly programming and testing these addressable detectors promptly and reliably. For instance, the field technician selects the accessory’s program mode, and enters the desired address. Model DPU eliminates the need for cumbersome, unreliable mechanical pro gramming methods (e.g. – dials and rotary switches), and reduces installation and service costs by electronically programming and testing the detector prior to installation. When set in \test’ mode, Model DPU will perform a series of diagnostic tests with out altering the address or other stored data, allowing technicians to determine if the detector is operating properly. Each field -device programmer / test unit operates on AC power or rechargeable batteries, providing flexibility and convenience in the programming / testing of fire -safety equipment from practically any location. Additionally, with the use of a Model DPU unit, there is no longer a cause for concern with any vibration, corrosion and other deteriorating conditions that can accompany the vitality of electro-mechanical-addressing mechanisms. Each detector fits into one (1) wall-or-ceiling footprint, and only occupies one (1) address on the signal-line circuit (SLC). - XTRI series interface modules • HFP-11, HFPT-11 detection devices
- HTRI series interface modules • HCP output-control module
- HMS & XMS series manual stations • HZM conventional zone module Dimensional Data
Compatible Devices: See: www.STI-USA.com for further details on ordering Model STI -9604 In Canada order: NOTICE – The information contained in this data- sheet document is intended only as a summary, and is su bject to change without notice. The product(s) described here ha s/hav e a specific instruction sheet (s) that cover various technical, limitation and liability information. Copies of install -type, instruction sheets – as well as the General Product Warning and Limitations document , which also contains important data, are provided with the product, and are available from the Manufacturer. Data contained in the aforesaid type of documentation should be consulted with a fire -safety professional before specifying or using the product. Any further questions or assistance concerning particular problems that might arise, relative to the proper f unctioning of the equipment, please contact the Manufacturer. OPERATING TEMPERATURE: +32° – +100°F (0° – +38°C) RELATIVE HUMIDITY: 0 – 95% (non-condensing) AIR PRESSURE : No effect AIR VELOCITY: 0 − 4,000 feet -per-minute (fpm) (0 – 20 meters-per-second) INPUT VOLTAGE RANGE: 16VDC – 30VDC \ALARM’ CURRENT, MAX.: 410μA \STANDBY’ CURRENT, MAX.: 250μA MAXIMUM SPACING: 30–ft. centers (900 sq. ft.), per NFPA 72 DETECTOR WEIGHT: 0.317 Lbs. (0.144 kg.) MECHANICAL PROTECTION GUARD: UL and ULC Listed (with STI Guard Model STI -9604) SENSITIVITY RANGE: 1.41 - 3.76 % ft obs. (Nominal 2.0% / ft. obs.) MODEL OR TYPE DATA SHEET PANEL XLS 6300 FireFinder® (fire) XLSV 6340 FireFinder (fire w/ voice ) Cerberus PRO Modular
8300 System Overview
pt. addressable (fire ) FC924 Cerberus PRO 504- pt. addressable (fire ) FV922 9821 Cerberus PRO 252-point addressable (fire w/ Intelligent Voice Communication [IVC] ) FV924 504-pt. addressable (fire w/ Intelligent Voice Communication [IVC] ) MODEL OR TYPE PART NUMBER PRODUCT DB-11C 500-095687 Detector Mounting Base, ULC Listed MODEL OR TYPE PART NUMBER PRODUCT OP921 S54320-F4-A2 Photoelectric Smoke Detector MODEL OR TYPE PART NUMBER PRODUCT DB-11 500-094151 Detector Mounting Base DB-11E 500-094151E Detector Base, small DB2-HR S54370-F12- Detector Mounting Base with Relay RL-HC 500-033230 Remote Alarm Indicator: 4” (10.2 cm) octagon. -box mount, red RL-HW 500-033310 Remote Alarm Indicator: single - gang box mount, red FDBZ492 S54319-B22- Addressable Air-Duct Housing FDBZ492-HR S54319-B23- Addressable Air -Duct Detector with Relay LK-11 500-695350 Base Locking Kit Details for Ordering Cerberus® PRO Siemens Industry, Inc. Smart Infrastructure - Building Products
2 Gatehall Drive • Parsippany, NJ 07054
Tel: (973) 593-2600 July - 2023 (Rev. 13) Panel Compatibilities Technical Data