Siemens OH720 Technical Manual

Siemens OH720 Technical Manual

Automatic fire detectors
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OH720, OP720, HI720, HI722
Automatic fire detectors
Technical Manual
A6V10212047_m_en_--
2015-05-04
Building Technologies
Control Products and Systems

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Summary of Contents for Siemens OH720

  • Page 1 OH720, OP720, HI720, HI722 Automatic fire detectors Technical Manual Building Technologies A6V10212047_m_en_-- 2015-05-04 Control Products and Systems...
  • Page 2 Issued by: Siemens Switzerland Ltd. Building Technologies Division International Headquarters Gubelstrasse 22 CH-6301 Zug Tel. +41 41 724-2424 www.siemens.com/buildingtechnologies Edition: 2015-05-04 Document ID: A6V10212047_m_en_-- © Siemens Switzerland Ltd, 2008 2 | 64 Building Technologies A6V10212047_m_en_-- Fire Safety 2015-05-04...
  • Page 3: Table Of Contents

    Table of contents About this document ................... 5 Applicable documents ..................7 Download center ..................... 7 Technical terms ....................7 History of changes................... 8 Safety ....................... 10 Safety instructions ..................10 Safety regulations for the method of operation ..........12 Standards and directives complied with ............
  • Page 4 3.5.11 Protective cage DBZ1194 .............. 29 3.5.12 Detector locking device LP720 ............29 3.5.13 Micro terminal DBZ1190-AA ............29 3.5.14 Connection terminal DBZ1190-AB ..........30 Planning ....................31 Compatibility ....................31 Multi-sensor smoke detector ................. 31 4.2.1 Parameter sets ................31 4.2.2 Specifications .................
  • Page 5: About This Document

    This document contains information on automatic fire detectors. Following the instructions consistently will ensure that the product can be used safely and without any problems. Scope The document is valid for the following automatic fire detectors: ● OH720 ● OP720 ● HI720 ●...
  • Page 6 0BAbout this document 8BApplicable documents Document identification The document ID is structured as follows: ID code Examples ID_ModificationIndex_Language_COUNTRY A6V10215123_a_de_DE -- = multilingual or international A6V10215123_a_en_-- A6V10315123_a_--_-- Date format The date format in the document corresponds to the recommendation of international standard ISO 8601 (format YYYY-MM-DD). Conventions for text marking Markups Special markups are shown in this document as follows:...
  • Page 7: Applicable Documents

    LP720, base attachment BA720 A6V10201731 Installation Detector exchanger DX791, adapter for detector exchanger FDUD491 A6V10202198 Data sheet Automatic fire detectors OH720, OP720, HI720, HI722 A6V10203222 Data Sheet Testequipment and accessories FDUL221, DX791, RE6, RE7T, RE8ST, RE8STCO, FDUM29x, LE3, StabexHF A6V10229261 List of compatibility (for 'Cerberus™...
  • Page 8: History Of Changes

    0BAbout this document 11BHistory of changes 1.4 History of changes The reference document's version applies to all languages into which the reference document is translated. The first edition of a language version or a country variant may, for example, be version 'd' instead of 'a' if the reference document is already this version.
  • Page 9 0BAbout this document 11BHistory of changes The table below shows the published language versions with the corresponding modification index: Modification index en_-- de_-- fr_-- it_-- es_-- – – – – – – – X = published – = no publication with this modification index 9 | 64 A6V10212047_m_en_-- Building Technologies...
  • Page 10: Safety

    1BSafety 12BSafety instructions 2 Safety 2.1 Safety instructions The safety notices must be observed in order to protect people and property. The safety notices in this document contain the following elements: ● Symbol for danger ● Signal word ● Nature and origin of the danger ●...
  • Page 11 1BSafety 12BSafety instructions How risk of injury is presented Information about the risk of injury is shown as follows: WARNING Nature and origin of the danger Consequences if the danger occurs ● Measures / prohibitions for danger avoidance How possible damage to property is presented Information about possible damage to property is shown as follows: NOTICE Nature and origin of the danger...
  • Page 12: Safety Regulations For The Method Of Operation

    2.2 Safety regulations for the method of operation National standards, regulations and legislation Siemens products are developed and produced in compliance with the relevant European and international safety standards. Should additional national or local safety standards or legislation concerning the planning, mounting, installation,...
  • Page 13 Disregard of the safety regulations Before they are delivered, Siemens products are tested to ensure they function correctly when used properly. Siemens disclaims all liability for damage or injuries caused by the incorrect application of the instructions or the disregard of danger warnings contained in the documentation.
  • Page 14: Standards And Directives Complied With

    1BSafety 14BStandards and directives complied with 2.3 Standards and directives complied with A list of the standards and directives complied with is available from your Siemens contact. 2.4 Release Notes Limitations to the configuration or use of devices in a fire detection installation with a particular firmware version are possible.
  • Page 15: Structure And Function

    3 Structure and function 3.1 Overview In this document the following point detectors are referred to collectively using the term 'Automatic fire detectors': ● Multi-sensor smoke detector OH720 ● Smoke detector OP720 ● Heat detector (static and differential) HI720 ●...
  • Page 16: Product Version Es

    2BStructure and function 16BOverview 3.1.2 Product version ES The product version ES provides the technical status of a device in terms of software and hardware. The product version is provided as a two-digit number. You will find the details of your device's product version: ●...
  • Page 17: Point Detector

    2BStructure and function 17BPoint detector 3.2 Point detector 3.2.1 Multi-sensor smoke detector The multi-sensor smoke detector OH720 is a multiple criteria fire detector with one optical and one thermal sensor. Structure and function 1 Labyrinth 3 Optical receiver 2 Optical transmitter 4 Heat sensor The detector has a high-quality opto-electronic measuring chamber.
  • Page 18: Smoke Detector

    2BStructure and function 17BPoint detector 3.2.2 Smoke detector The wide-spectrum smoke detector OP720 is an optical smoke detector with an optical sensor. Structure and function 1 Labyrinth 3 Optical receiver 2 Optical transmitter The wide-spectrum smoke detector has the same measuring chamber as the multi- sensor smoke detector.
  • Page 19: Heat Detector

    2BStructure and function 17BPoint detector 3.2.3 Heat detector The heat detectors HI720 and HI722 have a straightforward design featuring a thermal sensor. The following table indicates the most important differences between the two heat detectors. HI720 HI722 Alarm activation by: ●...
  • Page 20: Function

    2BStructure and function 18BFunction 3.3 Function 3.3.1 Parameter sets The detection behavior of the detectors is influenced by the parameter sets, so that it can be specifically adjusted to the fire phenomena and environmental conditions to be expected in the environment to be monitored. All parameter sets are programmed in the detectors.
  • Page 21: Line Separator

    2BStructure and function 18BFunction 3.3.4 Line separator All C-NET devices are equipped with a line separator. The C-NET device is equipped with electronic switches which isolate the defective part in case of a short-circuit on the C-NET detector line. The rest of the detector line remains serviceable.
  • Page 22: Extended Flashing Behavior Of Alarm Indicators In The Case Of

    2BStructure and function 18BFunction 3.3.6 Extended flashing behavior of alarm indicators in the case of ES ≥10 Internal alarm indicators The table below describes the flashing behavior of internal alarm indicators in the case of an ES ≥10: Several flashing patterns are available for normal operation. The flashing pattern is selected using the 'Cerberus-Engineering-Tool' software.
  • Page 23: Connection For External Alarm Indicators

    2BStructure and function 18BFunction External alarm indicators The table below describes the flashing behavior of external alarm indicators in combination with a point detector with an ES ≥10: Operating condition Flashing mode Graphic Alarm EAI flashes red every second Normal Configuration EAI off default...
  • Page 24: Behavior In Degraded Mode

    2BStructure and function 18BFunction 3.3.9 Behavior in degraded mode Applicable for the C-NET: When the main processor of the fire control panel fails, the control panel works in degraded mode operation. Depending on the control panel type, the fire control panel can continue to perform the most important alarming and signaling functions in degraded mode operation.
  • Page 25: Mechanical Setup

    2BStructure and function 19BMechanical setup 3.4 Mechanical setup One of the following devices is required to install a point detector: ● Detector base DB72x ● Sounder base DBS720 After installing the detector base or sounder base, simply insert the point detector in the base and turn it, either manually or using the detector exchanger DX791, until you hear and feel it snap in.
  • Page 26: Accessories

    ● Seal integrated in the detector base. Protection category: IP42. ● Cable connection via spring clips ● Compatible with: – Multi-sensor fire detector OH720 – Smoke detector OP720 – Heat detector HI720 – Heat detector HI722 – Multi-sensor smoke detector, ASA OOH740 –...
  • Page 27: Detector Base Db720

    2BStructure and function 20BAccessories 3.5.3 Detector base DB720 ● For the installation of point detectors ● For the recess-mounted cable entry ● For surface-mounted cable entry, up to 8 mm cable diameter ● Compatible with: ● Order no.: S54319-F4-A1 See also ...
  • Page 28: Base Attachment Ba720

    2BStructure and function 20BAccessories 3.5.7 Base attachment BA720 ● There are several potential break-out points in the base attachment for surface-mounted cable entry ● For the recess-mounted cable entry ● Permanent connection and joint installation with detector base ● Compatible with: ●...
  • Page 29: Protective Cage Dbz1194

    2BStructure and function 20BAccessories 3.5.11 Protective cage DBZ1194 ● To protect the devices against mechanical damage ● Can only be used in conjunction with the following accessories: ● Order no.: BPZ:4677110001 See also  Base attachment wet BA721 [➙ 41] 3.5.12 Detector locking device LP720 ●...
  • Page 30: Connection Terminal Dbz1190-Ab

    2BStructure and function 20BAccessories 3.5.14 Connection terminal DBZ1190-AB ● Auxiliary terminal for connecting cables ● For T-branches of additional cabling e.g., for cable shielding, detector heating units, sounder base, external alarm indicators, etc. ● For wire diameters of 1…2.5 mm² ●...
  • Page 31: Planning

    See also  Applicable documents [➙ 7] 4.2 Multi-sensor smoke detector Like all optical smoke detectors, the multi-sensor smoke detector OH720 is able to detect slow-burning fires that generate smoke. However, when compared to standard optical smoke detectors, the multi-sensor smoke detector OH720 also offers improved response behavior in the event of open fires and increased resistance to misleading sources of false alarms.
  • Page 32: Specifications

    3BPlanning 23BSmoke detector 4.2.2 Specifications The following table shows the properties of the parameter sets for the multi-sensor smoke detector OH720: Name Thermal Typ. response Sensitivity Static activation Differential activation Differential activation time temperature temperature possible from: [%/m] [°C] ∆T [K] [°C]...
  • Page 33: Specifications

    3BPlanning 24BHeat detector 4.3.2 Specifications The following table shows the properties of the parameter sets for the smoke detector OP720: Name Response time [s] Sensitivity [%/m] Standard Sensitive All parameter sets meet the criteria of standard EN 54-7. 4.4 Heat detector The heat detectors HI720 and HI722 respond when the temperature exceeds a preset threshold value.
  • Page 34: Specifications

    3BPlanning 24BHeat detector 4.4.2 Specifications The following table shows the properties of the parameter sets for the heat detectors HI720 and HI722: Name Operating temperature Static activation Differential activation Differential activation typ. / max. temperature temperature possible from: [°C] [°C] ∆T [K] [°C] 25 / 50...
  • Page 35: Mounting / Installation

    4BMounting / Installation 25BRequired space 5 Mounting / Installation 5.1 Required space ● Upon insertion of the detector base and sounder base, the detector base is placed under stress by compression, tension, and torsion. The fastening method must, therefore, be designed accordingly. ●...
  • Page 36: Detector Base Db72X

    4BMounting / Installation 26BDetector base DB72x 5.2 Detector base DB72x ● Install the detector base DB72x directly on the ceiling. ● Insert the cables into the detector base. You have the option of using the following types of line: – Recess-mounted cable entry –...
  • Page 37 4BMounting / Installation 26BDetector base DB72x Connection terminals The following detector bases have screw terminals: ● DB721 ● DB720 The following detector bases have spring clips: ● DB722 DB721 DB720 DB722 Figure 3: Screw terminals and spring clips See also ...
  • Page 38: Sounder Base Dbs720

    4BMounting / Installation 27BSounder base DBS720 5.3 Sounder base DBS720 1. Install the sounder base DBS720 directly on the ceiling. 2. Insert the cables into the sounder base DBS720. You have the option of using the following types of line: –...
  • Page 39: Detector Base Seal Rs720

    4BMounting / Installation 28BDetector base seal RS720 5.4 Detector base seal RS720 ● Use the detector base seal RS720 to install point detectors in wet rooms. Protection category: IP42. ● Compatible with the detector bases DB72x and the sounder base DBS720. ●...
  • Page 40: Base Attachment Ba720

    4BMounting / Installation 29BBase attachment BA720 5.5 Base attachment BA720 Install base attachment BA720 if you are using a cable with a diameter >8 mm for surface-mounted cable entry. The base attachment BA720 is attached to the ceiling together with a detector base.
  • Page 41: Base Attachment Wet Ba721

    4BMounting / Installation 30BBase attachment wet BA721 Mounting for surface-mounted cable entry: 1. Break out the areas required for cable entry in base attachment BA720 (1). 2. Insert the cables into the base attachment BA720 (1) through the broken-out areas. 3.
  • Page 42 4BMounting / Installation 30BBase attachment wet BA721 Click Click Fig. 2 DB110xx DB721 DB721D Fig. 1 DBZ1193A FDBZ294 Fig. 4 Fig. 3 DBZ1194 Figure 7: Installation and removal of protective cages and designation plates on base attachment wet BA721 Fig. 1 Installation of base attachment wet BA721 ●...
  • Page 43 4BMounting / Installation 30BBase attachment wet BA721 Installation (Fig. 1 and Fig. 2) 1. Install the M20 x 1.5 metal cable gland(s) in the back box of the base attachment wet. 2. Fit the back box securely to the substructure with 2 screws (detail A). 3.
  • Page 44: Detector Locking Device Lp720

    4BMounting / Installation 31BDetector locking device LP720 5.7 Detector locking device LP720 A point detector can be protected against theft with the detector locking device LP720. Figure 8: Installing the detector locking device LP720 A Set screw M3 x 12 mm B Allen key 1.
  • Page 45: Designation Plate Fdbz291

    4BMounting / Installation 32BDesignation plate FDBZ291 5.8 Designation plate FDBZ291 1. Label designation plate FDBZ291 with location address of point detector. 2. Attach designation plate FDBZ291 to detector base DB72x or sounder base DBS720. If the detector base seal RS720 is being used, it is not possible to install the designation plate FDBZ291.
  • Page 46: Cable Entry

    4BMounting / Installation 33BCable entry 5.9 Cable entry The detector bases DB72x have four terminals. ● A maximum of 2 cables may be connected to each screw terminal. ● Only one cable may be connected to each spring clip. The cable cross section of the terminals is 0.2…1.6 mm Terminal name Connection +Connection for external alarm indicator...
  • Page 47: Auxiliary Terminals Dbz1190-Aa/-Ab

    4BMounting / Installation 34BDetector lines 5.9.1 Auxiliary terminals DBZ1190-AA/-AB Use the following auxiliary terminals for multiple connections: ● DBZ1190-AB connection terminal 1…2.5 mm² ● DBZ1190-AA micro terminal 0.28…0.5 mm² Figure 11: Detector base with connection terminals and micro terminals See also ...
  • Page 48 4BMounting / Installation 34BDetector lines C-NET connection diagram – – – – – Figure 12: Connection diagram for addressed detector lines 1 Control panel 5 Cable –EAI6 2 Detector base DB72x, sounder base DBS720 6 Cable –EAI5 (optional) 3 Auxiliary terminal DBZ1190-xx 7 Short circuit (error) 4 External alarm indicator 8 Short circuit (error)
  • Page 49: Detector Dust Cap

    4BMounting / Installation 35BDetector dust cap 5.11 Detector dust cap 1. Cover the point detector with the detector dust cap during the construction phase. This will protect the point detector from dust and dirt. 2. Once construction work is complete, remove the detector dust cap from the point detector.
  • Page 50: Detector Heating Unit Fdbh291

    4BMounting / Installation 36BDetector heating unit FDBH291 5.12 Detector heating unit FDBH291 5.12.1 Installation of the detector heating unit When the detector is exposed to icing or moisture condensation (e.g., in cooling rooms, attics, loading ramps), detector heating unit FDBH291 is installed in the detector base.
  • Page 51: Connection Of The Detector Heating Unit

    4BMounting / Installation 36BDetector heating unit FDBH291 5.12.2 Connection of the detector heating unit ● Connect the cables for the monitored supply from the control panel and the detector heating unit to the supplied micro terminals DBZ1190-AA. ● The cables can be placed in the same cable harness as the detector line or separately.
  • Page 52: Commissioning

    5BCommissioning 37BCommissioning on the C-NET 6 Commissioning 6.1 Commissioning on the C-NET The devices are commissioned via the control panel. The exact procedure is described in the control panel documentation. 52 | 64 Building Technologies A6V10212047_m_en_-- Fire Safety 2015-05-04...
  • Page 53: Maintenance / Repair

    ● Detector tester RE7T The following table shows which detectors may be tested with which test aids. Detector Test gas Hot air fan / detector tester RE7T OH720 – OP720 – HI720 – HI722 The flashing behavior of the alarm indicators in test mode is described in the 'Internal alarm indicator in the case of ES <10 [➙...
  • Page 54: Specifications

    8.1 Multi-sensor smoke detector technical data The following section lists the technical data for the multisensor smoke detector OH720. You will find information on approvals, CE marking, and the relevant EU directives for this device (these devices) in the following document(s); see 'Applicable documents' chapter: ●...
  • Page 55 7BSpecifications 40BMulti-sensor smoke detector technical data Device characteristics Response sensitivity 2.5 or 3.5 %/m (depending on the at 0.2 m/s (typ.) parameter set) Permissible wind speed Max. 5 m/s Compensation speed ≤1/45 voltage increase for detection/h Flashing interval times AI: ●...
  • Page 56: Smoke Detector Technical Data

    7BSpecifications 41BSmoke detector technical data 8.2 Smoke detector technical data The following section lists the technical data for the smoke detector OP720. You will find information on approvals, CE marking, and the relevant EU directives for this device (these devices) in the following document(s); see 'Applicable documents' chapter: ●...
  • Page 57 7BSpecifications 41BSmoke detector technical data Connections Detector line and external alarm indicators: ● Design Screw terminal ● Cable cross section 2x 0.2…1.6 mm Ambient conditions Operating temperature/permissible ambient -10…+55 °C temperature Storage temperature -30…+70 °C Air humidity ≤95 % rel. Protection categories according to EN 60529 / IEC 60529: ●...
  • Page 58: Heat Detector Technical Data

    7BSpecifications 42BHeat detector technical data 8.3 Heat detector technical data The following section lists the technical data for the heat detectors HI720 and HI722. You will find information on approvals, CE marking, and the relevant EU directives for this device (these devices) in the following document(s); see 'Applicable documents' chapter: ●...
  • Page 59 7BSpecifications 42BHeat detector technical data Connections Detector line and external alarm indicators: ● Design Screw terminal ● Cable cross section 2x 0.2…1.6 mm Ambient conditions Operating temperature/permissible ambient -10…+55 °C temperature Storage temperature -30…+70 °C Air humidity ≤95 % rel. Protection categories according to EN 60529 / IEC 60529: ●...
  • Page 60: Dimensions

    7BSpecifications 43BDimensions 8.4 Dimensions OH720 OP720 HI720, HI722 OH720 with base OP720 with base HI720, HI722 with base 8.5 Environmental compatibility This equipment is manufactured using materials and procedures which comply with current environmental protection standards as best as possible. More specifically, the following measures have been undertaken: ●...
  • Page 61: Index

    Index Index Danger levels Alarm indicator Degraded mode operation external Collective behavior Approvals 54, 56, 58 Fire control panel failure Auxiliary terminals Designation plate Connection terminal Detector base Micro terminal Installation Sounder base Cables Detector CE marking 54, 56, 58 Performance check C-NET Detector base...
  • Page 62 Index Fire control panel failure Scope Degraded mode operation Screw terminals 37, 46 Flashing behavior Short-circuit Steady-on Line separator Flashing mode Smoke detector 15, 18 Internal alarm indicator Sounder base Flashing pattern Source language Configuration Spring clips 37, 46 Internal alarm indicator Standards 55, 57, 59 Steady-on...
  • Page 63 Index 63 | 64 A6V10212047_m_en_-- Building Technologies Fire Safety 2015-05-04...
  • Page 64 Issued by © Siemens Switzerland Ltd, 2008 Siemens Switzerland Ltd Technical specifications and availability subject to change without notice. Building Technologies Division International Headquarters Gubelstrasse 22 CH-6301 Zug +41 41-724 24 24 www.siemens.com/buildingtechnologies Document ID: A6V10212047_m_en_-- Manual FD720 Edition: 2015-05-04...

This manual is also suitable for:

Op720Hi720Hi722

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