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Sea-Fire FK-5-1-12 Installation, Operation And Maintenance Manual

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This manual is an integral part of the system approval. The suppression system must
be installed and maintained in accordance with all listed requirements.
Read and comply with these instructions, warnings, and limitations before installing.
PN: 123-330, Rev. F
Model NFG and NFD Fire Suppression Systems
Installation, Operation, and Maintenance Manual
U.S. Coast Guard Approved
Suitable for use on:
NFG 25-100 Models:
NFD 101-825 Models:
NFD 826-1800 Models:
Always maintain this manual
nearby for operator reference.
Manual PN: 123-330, Rev. F
Printed in the USA.
FK-5-1-12
162.029/248/0
FM Approved
3045557
20F (-7C) to 130F (54C)
20F (-7C) to 130F (54C)
32F (0C) to 130F (54C)
Page 1 of 52

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  • Page 1 FK-5-1-12 Model NFG and NFD Fire Suppression Systems Installation, Operation, and Maintenance Manual This manual is an integral part of the system approval. The suppression system must be installed and maintained in accordance with all listed requirements. U.S. Coast Guard Approved 162.029/248/0...

  • Page 2: Warnings

    Warnings WARNING CONCENTRATED AGENT AND BY-PRODUCT OF APPLICATION TO FIRE ARE TOXIC. AVOID BREATHING OF FUMES OR PROLONGED EXPOSURE. ACCIDENTAL DISCHARGE DURING HANDLING OR INSTALLATION MAY CAUSE SERIOUS INJURY. BEFORE ATTEMPTING TO INSTALL THIS DEVICE, READ AND COMPLY WITH INSTRUCTIONS, WARNINGS, AND LIMITATIONS CONTAINED IN THIS MANUAL.

  • Page 3: Table Of Contents

    Table of Contents Warnings .......................... 2 Application ........................4 Limitations ........................5 System Operations ......................8 Supervisory Pressure Switch ..................9 Switch Specifications ....................9 System Status Indicator Light Operation ..............9 Pressure Relief Assembly (Burst Disk)............... 10 Interaction with Engines, Generators and Powered Ventilation (Blowers) ....10 Diesel Engines or Generators, Powered Ventilation (Blowers) ........

  • Page 4: Application

    Application FK-5-1-12 (1,1,1,2,2,4,5,5,5-NONAFLUORO-4-(Trifluoromethyl)-3- Pentanone), the extinguishing agent used in all Sea-Fire NFG and NFD series fire suppression systems, is a suitable EPA accepted alternate replacement for Halon. FK-5-1-12 is an electrically nonconductive and residue free extinguishing agent that requires no cleanup. FK-5-1- 12 is also referred to as dodecaflouro-2-methylpentan-3-one, which is a fluoroketone.

  • Page 5: Limitations

    Limitations Sea-Fire NFG and NFD model series FK-5-1-12 automatic fire suppression systems are designed and tested to extinguish Class B (flammable liquid) fires in enclosed compartments only. The Maximum (Max) area of coverage is based on the Minimum (Min) height box footprint.
  • Page 6 30% safety factor on a 4.5% Minimum Extinguishing Concentration (MEC). In addition to gasoline and diesel fuel, other flammable liquids with MEC values equal to or below 4.5% for FK-5-1-12 may be protected by Sea-Fire NFG and NFD systems.
  • Page 7 CAUTION: NEVER INSTALL A UNIT WITH A VOLUME RATING LESS THAN THE GROSS VOLUME OF THE COMPARTMENT TO BE PROTECTED. DO NOT DEDUCT FOR ENGINES, REMOVABLE TANKS OR OTHER EQUIPMENT. Exception: If the boat manufacturer has placed a permanently affixed label in the engine compartment specifying the gross volume less the volume of permanently installed tankage, then this volume may be used to determine the proper size suppression system.

  • Page 8: System Operations

    System Operations Sea-Fire units described in this manual are automatically actuated by a temperature sensitive UL listed glass bulb tested in accordance with *UL 199. These bulbs are manufactured and tested to be activated at a minimum temperature. • 200°F (93°C) when immersed in a liquid bath or approximately 250°F (121°C) when tested using an air bath.

  • Page 9: Supervisory Pressure Switch

    (blowers) must be shut down. Supervisory Pressure Switch • Sea-Fire NFG and NFD series suppression systems are equipped with a factory installed pressure switch which is intended for Cylinder pressure monitoring and supervision and may also be used to control other electrical functions (engine shutdown, air exchange equipment etc.).

  • Page 10: Pressure Relief Assembly (Burst Disk)

    CGA S-1.1 installed on the manifold. Do not remove or perform any maintenance on this device. Removing or loosening this device will cause the contents under pressure to escape. Only Sea-Fire provided PRDs are authorized for use with these systems.

  • Page 11: Diesel Engines Or Generators, Powered Ventilation (Blowers)

    Manual Discharge Capability US Coast Guard approval requires the installation of manual discharge capability on all systems installed in compartments of 1,000 ft³ and larger. Sea-Fire offers manual discharge cables for this purpose. Models with manual cable connections are designated as “M” following the system size. “M” designates manual/automatic. “A”...

  • Page 12: Installation

    READ THE ENTIRE INSTRUCTION MANUAL AND CYLINDER NAMEPLATE PRIOR TO INSTALLATION. These installation instructions are intended to cover most normal installations. Additional technical or application information can be obtained by contacting: Sea-Fire Marine - USA Sea-Fire Europe, LTD 9351 G Philadelphia Rd. Unit D2...

  • Page 13: Wall Mounting

    Step 3 Best practices: Do Place Unit: Do Not Place Unit: As high as possible, no more than 3 Near a fresh air or ventilation duct feet below the ceiling, on supply opening. compartment bulkhead for b. Near an access door. mounting.
  • Page 14 Models NFG 25 - 100 • Vertical installation. • Horizontal with a minimum 8° angle or 1” (25.4mm) offset below level. Models NFD 101 - 200 • Vertical installation. • Horizontal with a minimum 5° angle or 1/2” (12.7mm) offset below level.

  • Page 15: Ii. Cable Assembly Installation

    Step 6 Carefully attach the Cylinder to the Bracket. The Sensor Valve / Detector Head should point towards the engine or the center of the compartment. The nameplate and gauge should be visible. Tighten the bracket straps so that the Cylinder body is firmly and securely held in place by its bracket (worm drive clamps must be torqued to 75-85 in-lb, (6-7 ft-lb)).
  • Page 16 720°. This is equivalent to eight right (90°) angles. Use extreme care when bending cable to avoid kinking. Never form a bend with a radius of less than 5” (127 mm). Selection of the correct size Sea-Fire cable length will reduce excess cable coil.
  • Page 17 Following the diagram in Figure 3, install the jam nut and lock washer on the cable end-outer. Screw the jam nut to the end of the threads. Insert the cable end through the panel and faceplate hole. Pull the cable end-inner (threaded shaft) out to its fullest travel.
  • Page 18 e. Pull on the Cylinder (S-Hook) end of the cable to retract the handle into the Ferrule. It may be necessary to softly push on the T-Handle at the same time to seat the O-Ring. Align the cross holes in the T-Handle and ferrule and insert the safety pin through both items so that the end of the safety pin shows out the far side of the Ferrule.

  • Page 19: Test Procedure

    NFPA 2001, Section 4.3 requires “Manual Controls shall not require a pull force of more than 40 lb (178 N) nor a movement of 14 inches. • Sea-Fire: minimum of 10 lb of force required at the S-Hook (extinguisher) to activate system discharge. Test Procedure...
  • Page 20 Attach a scale (PN: 128-092 Digital Scale) to the T-Handle (pull station) end of the cable assembly. A Testing Hook, PN: 128-115 is available to facilitate attaching the scale. (Scales available from Sea-Fire or others may be used) Pull on the T-Handle scale, monitoring the displayed force, until 10 lb (4.5 kg) is shown on the S-Hook (Cylinder end) scale.
  • Page 21 CAUTION: THERE SHOULD NOT BE TENSION IN THE CABLE PULLING ON THE LEVER. TENSION ON THE LEVER CAN CAUSE THE CYLINDER TO DISCHARGE WHEN THE SAFETY PIN IS REMOVED. d. With Step c successfully complete, use care to remove the factory installed safety pin from the actuator assembly (Figure 7-E).
  • Page 22 Release Bracket Insert “S” Hook into Release Safety Pin is in Center Position Fig A Fig B Lock Cable Place with Hairpin Cotter Fig C Fig D Release Arm Locate Behind Release Arm as a Backstop Remove Pin from Cylinder Farthest Fig E Head Bi-...

  • Page 23: Iii. System Status Indicator Light Installation

    III. System Status Indicator Light Installation Supplies, which are not included with your Sea-Fire system and should be at hand before the indicator light installation, are as follows: 1. 5A in-line fuse and holder 2. Sufficient length of insulated minimum 16 AWG stranded wire 3.
  • Page 24 ELECTRICAL SYSTEMS VARY FROM VESSEL TO VESSEL AND THESE DIRECTIONS MAY NOT BE APPLICABLE FOR YOUR INSTALLATION. SHOULD YOU HAVE ANY DOUBTS OF SAFELY ACCOMPLISHING THIS INSTALLATION, CONTACT A QUALIFIED MARINE ELECTRICIAN OR SEA-FIRE MARINE USA AT (410) 687-5500 FOR TECHNICAL ASSISTANCE. Ignition...

  • Page 25: Installation Requirements

    Refer to page 10 for additional details on engine interruption devices offered by Sea-Fire. • All Sea-Fire systems are designed so that in no case shall the gas be used at a concentration above its lowest-observed-adverse-effect level (LOAEL).

  • Page 26: System Maintenance / Inspection

    US and Canada Reciprocity Agreement. Assembly Manufacture Date versus Cylinder Manufacture Date: The Sea-Fire Cylinder Assembly MANUFACTURE DATE is listed on the specification label, described in the next section. This indicates the fill action and final assembly date. This is not the Cylinder manufactured date and has no impact on the Cylinder requalification interval.
  • Page 27 transportation if re-filled – penalty up to $500,000 fine and 5 years imprisonment (49 U.S.C. 5124). Models NFD 101 – 825 (DOT) • These units are built with DOT 3AL Cylinders. • The periodic inspection interval for DOT 3AL cylinders filled as a Fire suppression system with the agent as supplied is 12 years from the date stamped on the Cylinder.
  • Page 28 approved systems. International requirements need to be followed as well as other requirements according to the local authorities having jurisdiction (AHJ). Models NFG 25 – 100 (CE/UKCA) These systems are “CE” and “UKCA” marked in accordance with the Pressure Equipment Directive (PED) 2014/68/EU and the Pressure Equipment (Safety) Regulation 2016.

  • Page 29: Agent Weight Inspection

    • These units have welded steel Cylinders built to technical standard EN 13322-1. The Cylinders need to be maintained in accordance with BS EN 1803. • The periodic inspection interval for Cylinders built to European directives and maintained in accordance with those directives in the European community, is 10 years from the manufacture date hard stamped into the Cylinder.

  • Page 30: Pressure Gauge Inspection

    70°F (21°C). Per applicable design standards, this is defined as ± 10% of nominal fill pressure. Sea-Fire systems are rated for operating temperatures from 0°F (-17°C) or 20°F (-7°C) up to 130°F (54°C). Note: This is storage and ambient operating temperature.

  • Page 31: Pressure Vs. Temperature Graphs

    Pressure vs. Temperature Graphs Figure 10: FK-5-1-12 Pressure vs. Temperature, 500 psi at 70°F System Status Indicator Light Inspection Before operating vessel, visually check to ensure green indicator light or alternate display is operational, indicating that the pressure in the cylinder is in the normal range.

  • Page 32: Cable Inspection

    Re-assemble in reverse order (see Figure 7). Specification Tables Table 6: NFG - Automatic and Manual/Automatic Fire Suppression Systems Cylinder Minimum Maximum NFG Model Volume of Protection Diameter Installation Dimension Requirements FK-5-1-12 FK-5-1-12 (Nominal) ft³ m³ Auto Manual Only Auto Range...
  • Page 33 Table 7A: NFD - Automatic and Manual/Automatic Fire Suppression Systems Cylinder Minimum Maximum NFD Model Volume of Protection Diameter Installation Dimension Requirements FK-5-1-12 FK-5-1-12 (Nominal) ft³ m³ Auto Manual Only Auto Range Range 125A 125M 101 - 125 2.8 – 3.5...
  • Page 34 Operating Temperature Range: NFD 101-825: 20°F to 130°F (-7°C to 54°C) NFD 826-1800: 32°F to 130°F (0°C to 54°C) Discharge Temperature Range: NFD 101-1800: 175 to 225°F (79 to 107°C) • Models NFD 101 through NFD 825 are approved for vertical or horizontal mounting.
  • Page 35 Table 7B: NFD Automatic and Manual/Automatic Fire Suppression Systems Cylinder Minimum Maximum NFD Model Volume of Protection Diameter Installation Dimension Requirements FK-5-1-12 FK-5-1-12 (Nominal) ft³ m³ Manual Auto Range Range 850M 826 - 850 23.4 - 24.1 44.3 20.1 45.7 20.7...

  • Page 36: Two Year Nfg And Nfd Series Limited Warranty

    RESPECT TO THE PRODUCT, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. NO PERSON IS AUTHORIZED TO GIVE ANY OTHER WARRANTY, OR TO ASSUME FOR SEA-FIRE MARINE ANY OTHER LIABILITY IN CONNECTION WITH THE SALE OR INSTALLATION OF ITS PRODUCTS.

  • Page 37: Additional Servicing

    Service Manual 123-349 is available to these individuals. Out of Warranty Replacements / Recharges Sea-Fire NFG Model Series Cylinders comply with US DOT Specification 39 and PED/PESR. These Cylinders are not refillable. The discharged Cylinder will be replaced with a comparable SEA-FIRE extinguisher. Contact the factory or authorized dealer for details.

  • Page 38: Safety Data Sheets

    Safety Data Sheets Page 38 of 52 PN: 123-330, Rev. F...
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  • Page 46: Installation Inspection Checklist

    Installation Inspection Checklist Page 46 of 52 PN: 123-330, Rev. F...
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  • Page 52 Sea-Fire Marine - USA Sea-Fire Europe, LTD 9351 G Philadelphia Rd. Unit D2 Baltimore, Maryland Discovery, Voyager Park Tel: (410) 687-5500 Portfield Rd. Website: www.Sea-Fire.com Portsmouth, Hants PO3 5FN, United Kingdom Tel: +44(0)2392679666 Website: www.Sea-Fire.co.uk Page 52 of 52 PN: 123-330, Rev. F...

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