Det-Tronics HD - User Manual

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Summary

INSTRUCTIONS

DESCRIPTION

Provides a detailed explanation of the Model HD Risk Area Heat Detector's functionality and design.

FEATURES

Lists the key attributes and benefits of the Model HD detector, highlighting its performance and durability.

APPLICATIONS

Details the various industrial environments and scenarios where the Model HD detector is suitable for use.

IMPORTANT SAFETY NOTES

Provides critical safety warnings and precautions for handling and installing the detector in hazardous areas.

INSTALLATION

DETECTOR LOCATION

Guidance on selecting optimal mounting positions for the detector to ensure accurate temperature sensing.

MOUNTING SURFACE

Describes the ideal characteristics of a surface for mounting the detector to prevent damage or malfunction.

DETECTOR ORIENTATION

Information on the detector's mounting flexibility, whether horizontal or vertical.

PROTECTION AGAINST MOISTURE DAMAGE

Advises on necessary precautions to prevent moisture ingress and protect electrical connections.

WIRING PROCEDURE

Wire Size and Type

Specifies the recommended wire gauge, type, and preparation for connecting the detector.

End-of-Line (EOL) and Short-Circuit-Monitoring (SCM) Resistors

Guidelines for installing EOL and SCM resistors to ensure proper circuit monitoring and prevent terminal damage.

Wiring Temperature Requirement

Information on selecting field wiring suitable for the ambient temperature range the detector will operate in.

Detector Wiring

Illustrates terminal identification and recommended wiring connections for single and multiple detectors.

STARTUP

WARNINGS

Lists critical warnings to prevent damage or incorrect operation during the detector's startup phase.

VISUAL INSPECTION

Procedure for inspecting the detector's physical condition and identifying any damage or foreign matter.

DETECTOR OPERATION VERIFICATION

Steps to test the functional operation of individual detectors by applying heat and checking contacts.

SYSTEM OPERATION VERIFICATION

Procedure for testing the detector's integration and response within the overall fire alarm system.

MAINTENANCE

CALIBRATION VERIFICATION

Information on the required test kits and factory contact for verifying the detector's temperature setting.

SPECIFICATIONS

TERMINALS-

Details the specifications for the detector's terminal connections, including wire gauge and torque.

ELECTRICAL RATING-

Specifies the electrical limits for open circuit and open & short circuit monitoring.

AMBIENT TEMPERATURE RANGE-

Defines the acceptable operating and storage temperature limits for the detector.

TEMPERATURE PERFORMANCE RANGE

Refers to the Model Matrix for specific temperature performance characteristics.

HUMIDITY RANGE-

Specifies the acceptable non-condensing humidity range for the detector's operation.

THREAD OPTIONS-

Lists the available thread types (NPT and M25) for conduit entries.

DIMENSIONS-

Refers to Figure 14 for detailed physical dimensions of the heat detector.

CERTIFICATION-

Lists the various agency certifications (FM, CSA, ATEX, IECEx, SIL) applicable to the detector.

APPENDIX A

FM APPROVAL DESCRIPTION

Details the FM approval standards and classifications applicable to the Model HD detector.

APPLICABLE REQUIREMENTS

Lists the specific FM standards (e.g., FM 3600, FM 3615) that the detector complies with.

Stop Plugs

Information on FM-approved stop plugs and their installation requirements for maintaining IP ratings.

APPENDIX B

CSA APPROVAL DESCRIPTION

Details the CSA approval standards and classifications for the Model HD detector in hazardous locations.

DIVISION CLASSIFICATION

Specifies the division classifications (Class I, II, III) and hazardous location groups for CSA approval.

ZONE CLASSIFICATION:

Details the zone classifications (Zone 1, Zone 2) and corresponding protection methods for CSA approval.

APPLICABLE REQUIREMENTS

Lists the CSA standards (e.g., CAN/CSA-C22.2 No. 60079-0) the detector complies with for explosive atmospheres.

Stop Plugs

Information on CSA-approved stop plugs and their installation requirements for maintaining IP ratings.

APPENDIX C

ATEX APPROVAL DESCRIPTION

Details the ATEX directive compliance and hazard protection ratings for the Model HD detector.

Compliance with:

Lists the EN standards (e.g., EN 60079-0, EN 60079-1) the detector meets for ATEX certification.

Stop Plugs

Information on ATEX-approved stop plugs and their installation requirements for maintaining IP ratings.

Special conditions for safe use:

Specifies special safety conditions for the painted enclosure and cleaning methods to prevent electrostatic discharge.

APPENDIX D

IECEX APPROVAL DESCRIPTION

Details the IECEx scheme compliance and hazard protection ratings for the Model HD detector.

Compliance with:

Lists the IEC standards (e.g., IEC 60079-0, IEC 60079-1) the detector meets for IECEx certification.

Stop Plugs

Information on IECEx-approved stop plugs and their installation requirements for maintaining IP ratings.

Special conditions for safe use:

Specifies special safety conditions for the painted enclosure and cleaning methods to prevent electrostatic discharge.

APPENDIX E

ADDITIONAL APPROVALS

Details other significant certifications like SIL 2 Capability and INMETRO approvals for the detector.

SIL 2

Information regarding the detector's certification as SIL 2 Capable, referencing the safety manual for details.

INMETRO

Details the INMETRO approval standards and hazard protection ratings for the detector in Brazil.

Special conditions for safe use:

Specifies special safety conditions for the painted enclosure and wiring for ambient temperatures.

Stop Plugs

Information on INMETRO-approved stop plugs and their installation requirements for maintaining IP ratings.

The Model HD Risk Area Heat Detector is a precision temperature-sensing device designed to actuate an electrical contact output at a predetermined temperature. It is specifically engineered for use in hazardous (classified) locations and comes with an integral explosion-proof junction box. The detector's design incorporates Rate Compensation, which enhances its performance compared to traditional fixed-temperature or rate-of-rise detectors. This allows it to respond more quickly as the fire growth rate increases, activating its output when the ambient temperature reaches the setpoint, regardless of the fire growth rate. The unique properties of the alloy outer shell contribute to its rapid response.

Function Description:

The primary function of the Model HD detector is to sense excessive heat or fire. It can serve as an alarm device to warn personnel or as a signaling device to send a signal to an alarm panel, which can then actuate a fire suppression system. The detector's electrical contact is factory-wired to a screw terminal block within the junction box, where all external wiring connections are also made.

Important Technical Specifications:

Temperature Settings: Available in various temperature settings ranging from 140°F (60°C) to 725°F (385°C).
Tolerance: Ranges from ±7/-8°F (±4°C) for lower settings to ±20°F (±11°C) for higher settings.
Spacings (UL, ULc, FM): Varies based on temperature setting, with typical spacings of 25-50 feet (8-15 meters) for UL/ULc and 25-30 feet (8-9 meters) for FM.
Response Time Index (RTI): Classified as "Fast" or "V-Fast" depending on the temperature setting, indicating its sensitivity and speed of response.
Color Coding: The printing on the detector is color-coded (Black, White, Blue, Red, Green, Orange) to indicate its temperature setting.
Electrical Rating:
- Open circuit monitoring: 1.0 Amp maximum @ 30 Vdc (resistive).
- Open & short circuit monitoring: 1.0 Amp maximum @ 30 Vdc (resistive).
Wire Size and Type: UL/CSA rated for 12-26 AWG, 2.5-1.5 mm² wire. Screw terminal torque range is 3.5–5.3 in.-lbs. (0.4-0.6 N•m). Shielded cable (typically 16 AWG, 2.5 mm²) is recommended to protect against EMI and RFI.
Ambient Temperature Range:
- Operating: -40°F to +257°F (-40°C to +125°C).
- Storage: -40°F to +257°F (-40°C to +125°C).
Humidity Range: 5 to 95% RH, non-condensing.
Thread Options: Available with 3/4 inch NPT or M25 threads. Two or four port models are available.
Enclosure Rating: NEMA 4 / IP66 / IP67 rating, requiring the use of IP washers/IP glands (M25) for compliance.
Junction Box Material: Available in aluminum or stainless steel.
Detector Material: Stainless steel heat detector.
Approvals and Certifications: FM, CSA, ATEX, IECEx, and INMETRO Hazardous Location standards. Certified by Exida for SIL 2 Safety Instrumented System applications.
Dimensions: Approximately 3.77 inches (9.6 cm) in height, with a sensing shell length of approximately 10.6 inches (26.9 cm).

Usage Features:

Repeatable: The detector resets itself, eliminating the need for replacement after activation, and is testable.
Rugged: Designed to withstand shock and vibration, making it suitable for industrial environments.
Versatile: Offers various temperature settings to suit different application requirements.
Economical: Wide spacing capabilities help reduce installation costs.
Hermetically Sealed: The factory-set internal contact area is hermetically sealed in stainless steel, ensuring reliability.
Ease of Wiring and Installation: Features a screw terminal block for straightforward wiring.
Hazardous Location Suitability: Ideally suited for use in hazardous (classified) locations, with approvals for various Class and Zone classifications.
Mounting: Not position sensitive; can be mounted horizontally or vertically. Should be mounted to a solid surface free from high vibration, shock, or impact.
Protection Against Moisture Damage: Requires proper precautions during installation, including the use of IP washers/glands, inclined conduit raceways with drains, and conduit seals to prevent water ingress.
EOL and SCM Resistors: Supports End-of-Line (EOL) and Short-Circuit-Monitoring (SCM) resistors for system integrity, with specific guidelines for installation to prevent heat damage to the terminal block.

Maintenance Features:

Visual Inspection: Regular visual inspections are recommended per NFPA 72 guidelines, EN 54 practice, and other applicable local requirements. This includes checking the sensing shell for dents, dings, paint, or foreign matter. Damaged or painted units should be replaced. Dust buildup can be cleaned with a vacuum or damp cloth.
Detector Operation Verification: Involves removing power, disconnecting the detector, connecting an ohmmeter, applying heat to close contacts, removing heat, allowing cooling, reconnecting, and restoring power.
System Operation Verification: For systems with automatic fire extinguishing, this involves placing the fire panel in Bypass/Inhibit mode, heating the detector, verifying panel annunciator change, removing heat, allowing cooling, resetting the system, and returning the panel to Normal mode.
Calibration Verification: Requires a special calibration test kit with a repeatable heat source to accurately determine the detector's temperature setting. Contact Det-Tronics for suitable test kits.
Replacement Recommendation: While repeatable, replacement is recommended if the unit has been subjected to the intense heat of a fire to maintain performance reliability.
Junction Box Covers: Threaded covers should be properly lubricated (Lubriplate grease recommended) for ease of installation and removal. A hex head set screw secures the cover, preventing unauthorized access to the wiring compartment.
Repair: Repair of internal and external threaded joints is not intended.
Spare Detector: It is highly recommended to keep a spare detector on hand for field replacement to ensure continuous protection.
Return Material Authorization (RMA): For device repair and return, contact the local Detector Electronics office for an RMA number and provide a written statement describing the malfunction. Proper packing with antistatic bags is required.