HomeMy WebLinkAboutFTF000001-B 25 Bar HFC-227ea DIOM Manual
Firetrace International
8435 N. 90th Street, Suite2 • Scottsdale, AZ 85258 USA • +1-480-607-1218 • +1-480-315-1316 (Fax) • www.firetrace.com
DIOM FTF000001-B UL File: EX15893 06/07/2018
DIOM Manual
Part Number: FTF000001
25 Bar
Engineered Clean Agent
Fire Suppression System
Designed for use with:
HFC-227ea Clean Agent
DESIGN, INSTALLATION, OPERATION, AND
MAINTENANCE MANUAL
Clean Agent Extinguishing System Unit 4DM0 EX15893
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DIOM FTF000001-B UL File: EX15893 06/07/2018
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DIOM FTF000001-B UL File: EX15893 06/07/2018
FOREWARD
General
This manual is written for the fire protection professional that designs, installs, and maintains Firetrace Engineered
Clean Agent Fire Suppression Systems with HFC-227ea. This document outlines system components as well as and
procedures required for proper design, installation, operation, and maintenance.
Firetrace assumes no responsibility for the design or function of any systems other than those addressed in this
manual. The technical data contained herein is limited strictly for informational purposes only.
Firetrace Engineered Clean Agent Fire Suppression Systems with HFC-227ea are to be designed, installed, inspected,
tested, maintained, and serviced by qualified trained personnel in accordance with the following:
• All instructions, limitations, etc. contained in this manual P/N FTF000001
• All information contained on the agent cylinder nameplate(s)
• NFPA 2001: Standard on Clean Agent Fire Extinguishing Systems
• Underwriters Laboratories, Inc. Listing
• Local authority having jurisdiction
Warnings
Safety precautions are essential when any electrical or mechanical equipment is involved. These precautions should
be followed when handling, servicing, and recharging Firetrace fire suppression unit cylinders and equipment. If
safety precautions are overlooked or ignored, personal injury or property damage may occur.
The following notations are used throughout this manual. Always heed these precautions. They are essential to the
safe use of the equipment described in this manual.
DANGER:
Identifies immediate hazards and provides specific instructions or procedures, which if not correctly followed WILL
result in severe personal injury or death.
WARNING:
Identifies specific instructions or procedures, which if not correctly followed, COULD result in severe personal
injury or death.
CAUTION:
Identifies specific instructions or procedures, which if not correctly followed, COULD result in minor personal
injury or equipment or property damage.
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Safety Precautions
The following safety precautions should always be followed:
WARNING:
Pressurized cylinders are extremely hazardous and if not handled properly can cause property damage, bodily
injury, or death. Always wear safety glasses and make sure the Anti-Recoil Device is properly in place before unit
installation, servicing, or other general handling.
1) Read and understand this manual and the other documents referenced herein.
2) The valve discharge Anti-Recoil Device MUST be installed on the cylinder valve always and only removed
when connected into the discharge piping or when performing charging, testing, or salvaging operations in
accordance with the procedures contained in this manual.
3) Wear safety glasses when working with pressurized cylinders and charging equipment. It is recommended
to wear leather gloves to avoid any cryogenic burns.
4) Follow all the safety procedures included on the cylinder nameplate and in this manual.
5) Never assume that a cylinder is empty. Treat all cylinders as if they are fully charged.
Questions regarding the information contained in this manual can be addressed to:
Firetrace International
8435 N. 90th Street, Suite 2
Scottsdale, AZ 85258 USA
Phone: +1-480-607-1218
Fax: +1-480-315-1316
Web: www.firetrace.com
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Table of Contents
SECTION Page Number
FOREWARD ........................................................................................................................................................... iii
General ..................................................................................................................................................................... iii
Warnings .................................................................................................................................................................. iii
Safety Precautions .................................................................................................................................................... iv
Section 1: General Information ....................................................................................................................... 1
1.1 Introduction ................................................................................................................................................... 1
1.2 HFC-227ea Clean Agent ................................................................................................................................. 1
1.2.1 Properties .............................................................................................................................................. 1
1.3 Quality Requirements .................................................................................................................................... 2
1.4 Personnel Safety ............................................................................................................................................ 2
1.4.1 Agent Concentration .............................................................................................................................. 2
1.4.2 Thermal Decomposition Products ......................................................................................................... 3
Section 2: System Hardware ............................................................................................................................ 4
2.1 Essential Hardware ........................................................................................................................................ 4
2.1.1 Cylinder with Valve Assemblies ............................................................................................................. 4
2.1.1.1 Cylinder Valve Assembly .................................................................................................................... 5
2.1.1.1.1 Cylinder Valve Assembly: Pressure Supervisory Switch FTF503007 .............................................. 6
2.1.1.1.2 Cylinder Valve Assembly: Actuation Adapter ................................................................................ 7
2.1.1.1.3 Cylinder Valve Assembly: Auxiliary “M” Port ................................................................................. 7
2.1.1.2 Cylinder Mounting Straps .................................................................................................................. 8
2.1.2 Electric Linear Actuator FTF500125 ..................................................................................................... 10
2.1.3 Nozzles ................................................................................................................................................. 13
2.1.3.1 Part Numbering and Nozzle Types ................................................................................................... 13
2.2 Optional Components .................................................................................................................................. 15
2.2.1 Manual Override FTF500126 ............................................................................................................... 15
2.2.2 Pneumatic Actuator FTF700041 .......................................................................................................... 16
2.2.3 Discharge Flex Hoses ........................................................................................................................... 18
2.2.4 Check Valves ........................................................................................................................................ 19
2.2.5 Main/Reserve Selector Switch FTF502001 .......................................................................................... 20
2.2.6 Pressure Operated Switch FTF503013 ................................................................................................. 20
2.2.7 Liquid Level Indicator ........................................................................................................................... 21
2.3 Non-Firetrace Supplied Items ....................................................................................................................... 22
2.3.1 Pipe, Fittings, and Pipe Supports ......................................................................................................... 22
2.3.1.1 Pipe Requirements ........................................................................................................................... 22
2.3.2 Pipe Fittings and Piping Joining............................................................................................................ 23
2.3.3 Piping Reductions ................................................................................................................................ 23
2.3.4 Pipe Supports ....................................................................................................................................... 23
Section 3: Design ........................................................................................................................................... 23
3.1 Introduction ................................................................................................................................................. 23
3.2 Defining the Scope of Protection ................................................................................................................. 24
3.2.1 Ventilation and Unclosable Openings .................................................................................................. 24
3.3 Amount of Agent Required .......................................................................................................................... 24
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3.3.1 Minimum Design Concentration .......................................................................................................... 24
3.3.2 Agent Storage Temperature ................................................................................................................ 25
3.3.3 Pressure Adjustment ........................................................................................................................... 25
3.3.4 Flooding Factors ................................................................................................................................... 26
3.3.5 Agent Calculation ................................................................................................................................. 27
3.4 Design Parameters ....................................................................................................................................... 29
3.4.1 Pipe Limitations ................................................................................................................................... 29
3.4.2 Tee Limitations..................................................................................................................................... 30
3.5 Storage Cylinders ......................................................................................................................................... 32
3.5.1 Manifolding .......................................................................................................................................... 32
3.6 Nozzle Coverage ........................................................................................................................................... 34
3.6.1 Area ...................................................................................................................................................... 34
3.6.2 Height................................................................................................................................................... 36
3.6.3 Equivalent Length Data ........................................................................................................................ 39
3.7 Example Calculation..................................................................................................................................... 40
3.7.1 Cylinder Selection ................................................................................................................................ 42
3.7.2 Software Output Example .................................................................................................................... 42
Section 4: Operation and Maintenance ......................................................................................................... 43
4.1 Component Verification ............................................................................................................................... 43
4.1.1 Electric Linear Actuator FTF500125 ..................................................................................................... 43
4.1.2 Manual Override FTF500126 ............................................................................................................... 43
4.1.3 Pneumatic Actuator FTF700041 .......................................................................................................... 44
4.1.4 Liquid Level Indicator operation .......................................................................................................... 45
4.2 Inspection Schedule ..................................................................................................................................... 46
4.2.1 Weekly ................................................................................................................................................. 46
4.2.2 Semi-Annual ......................................................................................................................................... 46
Section 5: Post Discharge .............................................................................................................................. 47
5.1 Enter the Protected Enclosure ...................................................................................................................... 47
5.2 Remove from Service ................................................................................................................................... 47
5.3 Return to Service .......................................................................................................................................... 47
Section 6: Parts Lists ...................................................................................................................................... 48
6.1 Base HFC-227EA Cylinder and Valve Assemblies ......................................................................................... 48
6.2 Cylinder Valve Controls and Monitoring Devices ......................................................................................... 48
6.3 Engineered Nozzles ...................................................................................................................................... 49
6.4 System Accessories ...................................................................................................................................... 49
6.5 Legacy Parts ................................................................................................................................................. 50
6.5.1 Legacy Manual Actuator FTF700010 .................................................................................................... 51
6.5.2 Legacy Electric Solenoids FTF500011, FTF500023 & FTF501223 ......................................................... 51
Appendix A – Flow Calculation Example .............................................................................................................. 53
Appendix B – Liquid Level Indicator Charts .......................................................................................................... 60
Appendix C – SDS ................................................................................................................................................. 66
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List of Tables
Table 1 – Agent Properties ............................................................................................................................................ 2
Table 2 – Agent Quality Specifications .......................................................................................................................... 2
Table 3 – NOAEL and LOAEL of HFC-227ea .................................................................................................................... 3
Table 4 – Cylinder Fill Range .......................................................................................................................................... 4
Table 5 – System Assembly Dimensions ........................................................................................................................ 5
Table 6- Mounting Strap Dimensions ............................................................................................................................ 8
Table 7 – Electric Linear Actuator Part Numbers ......................................................................................................... 11
Table 8- Aluminum Nozzle Configurations .................................................................................................................. 14
Table 9- Brass Nozzle Configurations .......................................................................................................................... 14
Table 10- Stainless Steel Nozzle Configurations .......................................................................................................... 15
Table 11- Manual Override Part Numbers................................................................................................................... 16
Table 12 – Pneumatic Actuator Limitations................................................................................................................. 17
Table 13 – Flex Hose Dimensions ................................................................................................................................ 19
Table 14 – Check Valve Dimensions ............................................................................................................................ 20
Table 15- LLI Part Numbers.......................................................................................................................................... 21
Table 16 – Minimum Design Concentrations (MDC) ................................................................................................... 25
Table 17– Atmospheric Correction Factor ................................................................................................................... 26
Table 18 – Typical Application Flooding Factors – US Customary Units ...................................................................... 26
Table 19 – Typical Application Flooding Factors – SI Units .......................................................................................... 27
Table 20 – Design Limitations ...................................................................................................................................... 29
Table 21 – Minimum and Maximum Flow Rate Guidelines ......................................................................................... 30
Table 22 – Tee Limitations ........................................................................................................................................... 30
Table 23 – Equivalent Length Assemblies .................................................................................................................... 39
Table 24 – Total Amount of Agent Required ............................................................................................................... 42
Table 25 – Base System Assemblies ............................................................................................................................ 48
Table 26 – System Releasing and Monitoring Devices ................................................................................................ 48
Table 27- System Accessories ...................................................................................................................................... 49
Table 28 – Legacy Parts ............................................................................................................................................... 50
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List of Figures
Figure 1 – Cylinder Valve and Assembly ........................................................................................................................ 5
Figure 2- Valve Internals ................................................................................................................................................ 6
Figure 3 – Pressure Supervisory Switch ......................................................................................................................... 6
Figure 4 - Stacked Electronic Linear Actuator and Local Manual Actuator ................................................................... 7
Figure 5 – Cylinder Wall Strap ....................................................................................................................................... 9
Figure 6 – Cylinder Floor Strap ...................................................................................................................................... 9
Figure 7 – Cylinder Securing Options ........................................................................................................................... 10
Figure 8 – Strap Installation Example .......................................................................................................................... 10
Figure 9 – Electric Linear Actuator ............................................................................................................................... 12
Figure 10- Electronic Linear Actuator Wiring Schematic ............................................................................................. 12
Figure 11 – Nozzle Examples ....................................................................................................................................... 13
Figure 12 – Nozzle Port Orientation ............................................................................................................................ 13
Figure 13 –Manual Override ........................................................................................................................................ 16
Figure 14 – Pneumatic Actuator .................................................................................................................................. 17
Figure 15 – Secondary Control Arrangement Example................................................................................................ 18
Figure 16 – Flex Hoses ................................................................................................................................................. 18
Figure 17 – Check Valve ............................................................................................................................................... 19
Figure 18 – Main/Reserve Selector Switch .................................................................................................................. 20
Figure 19- Pressure Operated Switch .......................................................................................................................... 21
Figure 20- LLI Illustration ............................................................................................................................................. 22
Figure 21 – Maximum Bull Tee Imbalance................................................................................................................... 31
Figure 22 – Minimum Bull Tee Imbalance ................................................................................................................... 31
Figure 23 – Maximum Side Tee Imbalance .................................................................................................................. 31
Figure 24 – Minimum Side Tee Imbalance .................................................................................................................. 31
Figure 25 – Bull Tee Configurations ............................................................................................................................. 32
Figure 26 – Side Tee Configurations ............................................................................................................................ 32
Figure 27- Typical Center Outlet Manifold .................................................................................................................. 33
Figure 28- Typical End Outlet Manifold ....................................................................................................................... 33
Figure 29- 360° Central Nozzle Coverage .................................................................................................................... 34
Figure 30 – Nozzle Installation Limitations .................................................................................................................. 36
Figure 31 – Single Sidewall Nozzle Height Limit .......................................................................................................... 37
Figure 32 – Single Central Nozzle Height Limit ............................................................................................................ 37
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Figure 33 – Tiered Nozzle Example .............................................................................................................................. 38
Figure 34- Nozzle Elevation Difference ........................................................................................................................ 38
Figure 35- Sample Calculation Layout ......................................................................................................................... 40
Figure 36- Electronic Linear Actuator Layout .............................................................................................................. 43
Figure 37- Pneumatically Operated Cylinder Assembly............................................................................................... 45
Figure 38 – Legacy Manual Actuator FTF700010 ......................................................................................................... 51
Figure 39 – Legacy Electric Solenoid ............................................................................................................................ 51
Figure 40 – Legacy Electric Solenoid on Side Port ....................................................................................................... 52
Figure 41 – Legacy Electric Solenoid on Top Port ........................................................................................................ 52
Figure 42- 150 lb. [62 L] LLI Chart ................................................................................................................................ 60
Figure 43- 250 (103L) LLI Chart .................................................................................................................................... 61
Figure 44- 375 (153L) LLI Chart .................................................................................................................................... 62
Figure 45- 560 lb. (227) LLI Chart ................................................................................................................................. 63
Figure 46- 900 lb. (369) LLI Chart ................................................................................................................................. 64
Figure 47 – 1,200 lb. [490 L] LLI Chart ......................................................................................................................... 65
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Section 1: General Information
1.1 Introduction
The Firetrace Engineered Clean Agent Fire Suppression Systems with HFC-227ea are UL Listed by Underwriters
Laboratories and ULC Listed by Underwriters Laboratories of Canada. These units are designed for use in total
flooding applications using HFC-227ea in accordance NFPA 2001: Standard on Clean Agent Fire Extinguishing
Systems.
The Firetrace Engineered Clean Agent Fire Suppression Systems with HFC-227ea have been tested to limits
established by UL/ULC in compliance with the requirements specified in UL 2166 Standard for Halocarbon Clean
Agent Extinguishing System Units as detailed in this manual.
The engineered concept of automatic fire suppression systems allows a range of flexibility in design parameters. The
information contained in this manual will allow a systems designer to properly design a Firetrace Engineered HFC-
227ea System. It will also permit an authority having jurisdiction to determine that all required design and
engineering parameters have been satisfied.
1.2 HFC-227ea Clean Agent
1.2.1 Properties
HFC-227ea (heptafluoropropane, CF₃-CHF-CF₃) Clean Agent is a very stable liquefied gas, super-pressurized with
nitrogen and stored in cylinder and valve assemblies as part of a Firetrace Engineered Suppression System.
HFC-227EA is a safe and effective fire extinguishing agent that can be used on type A, B, and C fires. HFC-227EA
suppresses fire primarily by physical mechanisms due to its relatively high heat capacity with minimal impact on
available oxygen. This allows hazard occupants to see and breathe, permitting them to safely exit the hazard area.
It is a stable, liquefied gas and can be used to safely protect electronic equipment, will completely vaporize, and
requires no clean up after a system discharge. Additional information on agent properties can be found in
Table 1, as well as the MSDS located in Appendix C – SDS of this document.
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Chemical Formula CF₃-CHF-CF₃
Molecular Weight 170.03 g/mol
Freezing Point -204 °F [-131 °C]
Boiling Point at 1 atm 2.6 °F [-16.36 °C]
Critical Temperature 215 °F [101.7 °C]
Critical Density 38.76 lb./ft3 [0.621 kg/L]
Critical Pressure 422 psia [2.91 MPa]
Critical Volume 0.0258 ft3/lbm [1.61 L/kg]
Density, Saturated Liquid 87.58 lbm/ft3 [1.3886 kg/L]
Density, Gas at 1 atm 0.4530 lbm/ft3 [0.00705 kg/L]
Liquid Viscosity at 77 °F [25 °C] 0.184 centipoise
Heat of Vaporization at Boiling Point 57 Btu/lbm [132.6 kJ/kg]
Vapor Pressure at 70 °F [21 °C] 58.8 psia
Table 1 – Agent Properties
1.3 Quality Requirements
Strict agent quality specifications must be maintained. These values are as outlined below:
HFC-227EA - Mole % (Minimum) 99
Acidity - PPM by Weight (Maximum) 3
Water Content - % by Weight (Maximum) 0.001
Table 2 – Agent Quality Specifications
1.4 Personnel Safety
1.4.1 Agent Concentration
As indicated in NFPA 2001: Standard on Clean Agent Fire Extinguishing Systems, the areas into which HFC-227EA is
discharged must be evacuated by personnel and the areas ventilated after discharge.
HFC-227EA has acceptable toxicity for use in occupied spaces when the guidelines in this manual, NFPA 2001, and
any relevant international standards found applicable by the authority having jurisdiction are followed.
HFC-227EA has been evaluated for cardiac sensitization through test protocols approved by the United States
Environmental Protection Agency (EPA). The EPA’s Significant New Alternative Policy (SNAP) Program classifies
HFC-227EA as acceptable for use as a total flooding agent in occupied spaces with no use limitations. Refer to SNAP
Program rules for more information.
HFC-227EA has acceptable toxicity and cardiac sensitization levels for use in occupied spaces when used as specified
in the United States EPA SNAP program rules.
NFPA 2001 specifies a “No Observed Adverse Effects Level” (NOAEL) for clean agent concentration. This is the highest
concentration for which no adverse physiological or toxicological effect has been observed. Additionally, NFPA 2001
specifies a “Lowest Observable Adverse Effects Level” (LOAEL). This is the lowest concentration for which an adverse
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physiological or toxicological effect has been observed.
NOAEL
(% Vol.)
LOAEL
(% Vol.)
9.0 10.5
Table 3 – NOAEL and LOAEL of HFC-227ea
Consideration shall be given to the possibility of a clean agent migrating to adjacent areas outside of the protected
space. Care must be taken to ensure that the calculated concentration for normally occupied spaces does not exceed
the NOAEL.
WARNING: When HFC-227EA is discharged through the nozzle, the vaporizing HFC-227EA discharge mixture will
have a significant cooling effect which could cause skin irritation. Do not stand in direct line of the nozzle flow as
the force of discharge could cause injury. The nozzles are designed to discharge the HFC-227EA in a horizontal
plane. The flow of HFC-227EA should not be obstructed where obstructions are avoidable.
1.4.2 Thermal Decomposition Products
There is a direct correlation amount of agent, surface area of the flame front, and the quantity of thermal
decomposition products (TDP) created.
The discharge of the HFC-227EA at 70 °F (21.1°C) has been established at 10 seconds maximum regardless of the
weight discharged to:
1. Limit thermal decomposition products (TDP).
2. Limit of fire damage and its effects.
3. Enhance agent mixing into hazard environment.
Personnel within the area, including installers, maintenance, construction, and all those working within the area are
to be instructed in the following areas:
1. Emergency lighting and directional exit signs.
2. Clear aisles and passages for exit routes.
3. Self-closing exit doors that have panic hardware provisions.
4. Continuous alarm during HFC-227EA discharge and afterward until normal atmosphere has been restored
in the area.
5. Alarms within and outside of the area that will operate upon first detection of fire.
6. Warning signs located at the entrances to, and inside the areas, to inform that a HFC-227EA system is
installed with instructions that are needed for the hazard.
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Section 2: System Hardware
Firetrace system hardware is separated into two distinct categories:
• Essential Hardware: Components required to achieve a functional system
• Secondary components: Optional equipment which is not required for a system to normally function.
Firetrace Engineered HFC-227EA Systems are intended to be designed and installed to protect single or multiple
hazards within the limitations as stated in this manual. The equipment described in this manual has been tested in
accordance with UL 2166 Standard for Halocarbon Agent Extinguishing System Units. The successful result of this
test program has produced a fire suppression system listed by both UL and ULC. The authority having jurisdiction
should follow the information specified by this manual, NFPA 2001: Standard on Clean Agent Fire Extinguishing
Systems, and any other applicable standards.
2.1 Essential Hardware
The components shown in the following sections are essential to the functionality of the Firetrace system. Without
any one of these components, the Firetrace system is incomplete and will result in the system’s inability to operate.
2.1.1 Cylinder with Valve Assemblies
The engineered clean agent system cylinders are available in the following sizes: 35 lb. [15 L], 70 lb. [29 L], 150 lb.
[62 L], 250 lb. [103 L], 375 lb. [153 L], 560 lb. [227 L], 900 lb. [368 L], and 1200 lb. [490 L]. Each of the system
assemblies can be in filled in one pound [0.5 kg] increments between their indicated fill range as shown in table 4.
System operational temperature limits are 32 °F [0 °C] to 130 °F [54.4 °C] and system operating pressure is 360 psi
[25 bar] at 70 °F [21.1 °C]. System cylinders with a capacity of 15 to 368 liters are manufactured, tested, and
stamped in accordance with DOT-4BW500 and TC-4BWM34. System cylinders with a capacity of 490 liters are
manufactured, tested, and stamped in accordance with DOT-SP 11953 500
System
Assembly Part
Number
Cylinder Size
(Nominal)
Fill Range [lb.] Fill Range [kg]
Empty Weight Valve Size
(Nominal) Minimum Maximum Minimum Maximum
FTF000035 35 lb. [15 L] 16 35 7.5 16.0 37.6 lb. (17.1 kg) 1 in [25 mm]
FTF000070 70 lb. [29 L] 31 71 14.0 32.0 54 lb. (24.5 kg) 1 in [25 mm]
FTF000150 150 lb. [62 L] 66 152 30.0 69.0 106.2 lb. (48.2 kg) 1 ½ in [40 mm]
FTF000250 250 lb. [103 L] 109 253 49.5 114.5 154.8 lb. (70.3 kg) 1 ½ in [40 mm]
FTF000375 375 lb. [153 L] 163 379 74.0 172.0 250 lb. (113.4 kg) 2 ½ in [65 mm]
FTF000560 560 lb. [227 L] 241 561 109.5 254.5 340 lb. (154.3 kg) 2 ½ in [65 mm]
FTF000900 900 lb. [368 L] 390 910 177.5 412.5 465.5 lb. (211.2 kg) 2 ½ in [65 mm]
FTF001200 1,200 lb. [490 L] 519 1,211 234.0 549.5 762.5 lb. (345.9 kg) 4 in [100 mm]
Table 4 – Cylinder Fill Range
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Figure 1 – Cylinder
Valve and Assembly
System
Assembly Part
Number
Cylinder Size
(Nominal)
Dimension "A" Dimension "B" Dimension "C"
in mm in mm in mm
FTF000035 35 lb. [15 L] 17.00 432 21.50 547 10.00 254
FTF000070 70 lb. [29 L] 28.75 731 33.25 845 10.00 254
FTF000150 150 lb. [62 L] 37.75 959 43.00 1,093 12.75 324
FTF000250 250 lb. [103 L] 39.00 991 44.50 1,131 16.00 407
FTF000375 375 lb. [153 L] 55.50 1,410 64.00 1,626 16.00 407
FTF000560 560 lb. [227 L] 54.00 1,372 61.75 1,569 20.00 508
FTF000900 900 lb. [368 L] 60.50 1,537 68.25 1,734 24.00 610
FTF001200 1,200 lb. [490 L] 60.25 1,531 68.75 1,747 30.00 762
Table 5 – System Assembly Dimensions
Included in each of the cylinder assemblies are the following components:
• Cylinder Valve Assembly
• Cylinder Mounting Straps
Details of these included components can be seen in sections 2.1.1.1 through 2.1.2
2.1.1.1 Cylinder Valve Assembly
The cylinder valves are pressure differential type valves that include an actuation adapter, pressure monitoring
switch, auxiliary “M” port for a discharge activation switch or other pneumatically actuated devices.
Internally within each valve is a piston equipped with elastomeric seals which separate the pressure contained within
the top half of the valve from the pressure contained in the cylinder. When the pressure contained within the top
half of the valve is vented via an actuation device, the piston can rise within the assembly, exposing the discharge
ports. Once the discharge ports are exposed, the pressure contained within the cylinder drives the agent out the
discharge port into the pipe network.
If any of the elastomeric seals should fail, a small hole in the axis of the piston allows the cylinder pressure to equalize
with the pressure stored in the top half of the valve preventing any unintended actuation.
The 35 lb. [15 L] and 70 lb. [29 L] size cylinders are equipped with 1 in [25 mm] valves. The 150 lb. [62 L] and 250 lb.
[103 L] size cylinders are equipped with 1 ½ in [40 mm] valves. The 375 lb. [153L], 560 lb. [227 L], and 900 lb. [368 L]
cylinders are equipped with 2 ½ in [65 mm] valves. The 1,200 lb. [490 L] cylinder is equipped with a 4 in [100 mm]
valve.
NOTE: All size system assemblies utilize straight siphon tubes, therefore the cylinders are to be installed
only in a vertically upright (valve on top) position.
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Figure 2- Valve Internals
CAUTION:
All Cylinder Valves are factory equipped with Anti-Recoil Devices. The Anti-Recoil Device SHALL ALWAYS be
installed in the valve outlet unless the system is connected to the discharge piping or recharge adapters.
2.1.1.1.1 Cylinder Valve Assembly: Pressure Supervisory Switch FTF503007
The Pressure Supervisory Switch included in the valve assembly is used to monitor the pressure inside the system
cylinder. It is permanently attached to the port marked “P”. If the cylinder assembly were to experience a pressure
drop below 300 ± 10 psig [20.7 ± 1.0 bar], the switch contacts will activate providing a signal to the control panel
that the cylinder has lost pressure.
The Pressure Supervisory Switch is single pole, double throw (SPDT) and can be wired in either the normally open
(NO), normally closed (NC) configurations, where the normal condition is at atmospheric pressure. When the cylinder
is pressurized, the contacts close.
Refer to the control panel for correct wiring of the Pressure Supervisory Switch. When the switch is used on a
standard supervisory input circuit, there will be no distinction between a wiring fault and device actuation. The
switch shall be installed onto a circuit suitable for system supervision in accordance with NFPA 72: National Fire
Alarm and Signaling Code. This device is only to be utilized when accepted by the authority having jurisdiction. All
other uses of this switch should be approved by the authority having jurisdiction.
Switch Specification
Electrical Rating: 240 VAC – 3 A, 24 VDC – 3 A
Switch: SPDT snap action
Contacts: NO, NC, and Common
Pressure setting: 300 ± 14 psig [20.7 ± 1.0 bar]
deactivation point
Figure 3 – Pressure Supervisory Switch
1 in [25 mm]
Cylinder Valve
1 ½ in [40 mm]
Cylinder Valve
2 ½ in [65 mm]
Cylinder Valve
4 in [100 mm]
Cylinder Valve
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2.1.1.1.2 Cylinder Valve Assembly: Actuation Adapter
Each Valve is manufactured with an actuation adapter which allows the Linear Actuator (see section 2.2 for details)
and/or a Manual Override Switch (Section 2.2.1) to be mounted to the valve assembly. The actuation adapter
contains an integrated Schrader core which allows for the removal or installation of the actuator or local manual
release while system is under pressure.
Should both an electronic linear actuator and a local manual actuator be required, these units are stackable as
indicated in figure 4.
Figure 4 - Stacked Electronic Linear Actuator and Local Manual Actuator
2.1.1.1.3 Cylinder Valve Assembly: Auxiliary “M” Port
An additional 1/8-inch NPT outlet on the cylinder valve, stamped “M”, is available for use as a pressure source to
drive the Pneumatic Actuators as secondary control heads on a multiple cylinder system. This port can also be used
to actuate a Pressure Operated Switch or additional approved accessory.
The “M” port is only pressurized during system discharge therefore components can be mounted or dismounted
while the system is under pressure.
Linear Actuator
Local Manual
Actuator
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2.1.1.2 Cylinder Mounting Straps
The last component included in the Cylinder assemblies are the Cylinder Mounting Straps. The cylinder mounting
straps are manufactured steel bands formed to the diameters of the cylinders with flanges for anchoring to solid
surfaces or appropriately sized continuous slot metal framing channel. The channel is to be supplied by the installer.
The cylinder bracket must be secured to a surface appropriate for retaining the weight of the cylinder in event of a
discharge. This precaution is intended to safely support the weight of the cylinder and the reaction force of the HFC-
227EA discharge.
A single cylinder bracket is required for the 35 lb. [15 L], 70 lb. [29 L], 150 lb. [62 L], and 250 lb. [103 L] cylinders. The
375 lb. [153 L], 560 lb. [227 L], 900 lb. [368 L] and 1,200 lb. [490 L] cylinders require two bracket straps per cylinder
assembly. All cylinders must be mounted vertically only, with the valve up, resting firmly on the floor.
Each cylinder assembly is supplied with the relevant number of cylinder mounting straps – for reference only
Cylinder Size
(Nominal)
Required
Strap Part
Number
Qty
Required
Per
Cylinder
Anchor
Point
Dimension
"A"
Dimension
"B"
Dimension
"C"
Dimension
"D"
in mm in mm in mm in mm
35 lb. [15 L] FTF400035 1 Wall 9.8 248 12.3 311 11.3 286 1.4 35
70 lb. [29 L] FTF400035 1 Wall 9.8 248 12.3 311 11.3 286 1.4 35
150 lb. [62 L] FTF400150 1 Wall 12.5 318 15.0 381 14.0 356 1.4 35
250 lb. [103 L] FTF400250 1 Wall 15.8 400 18.3 464 17.3 438 1.4 35
375 lb. [153 L] FTF400250 2 Wall 15.8 400 18.3 464 17.3 438 1.4 35
560 lb. [227 L] FTF400560 2 Wall 19.8 502 22.3 565 21.3 540 1.4 35
900 lb. [368 L] FTF400950 2 Wall 23.8 603 26.3 667 25.3 643 1.4 35
1,200 lb. [490
L] FTF401200 2 Wall 29.0 737 32.3 819 31.3 794 1.4 35
1,200 lb. [490
L] FTF401201 2 Floor 4.5 114 10.5 267 9.5 241 1.37 35
Table 6- Mounting Strap Dimensions
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Figure 5 – Cylinder Wall Strap
Figure 6 – Cylinder Floor Strap
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Figure 7 – Cylinder Securing Options
Figure 8 – Strap Installation Example
2.1.2 Electric Linear Actuator FTF500125
The Electronic Linear Actuator operates the cylinder/valve assembly by venting the pressure above the piston in the
cylinder valve allowing the piston to slide upward and commence system discharge.
The Electric Linear Actuator mounts to the Actuation Adapter threads located on top of the cylinder valve assembly.
The threaded attachment allows for ease of removal for inspection and maintenance purposes.
The Electric Linear Actuator houses a pin, magnetically held in place while the system remains in an idle state. Once
powered, the pin moves downward, thereby depressing the Actuation Adapter valve core, releasing pressure from
the cylinder valve, and actuating the system.
The Electric Linear Actuator must be actuated from a UL Listed control panel for releasing device service that is
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compatible with Firetrace equipment. Prior to the installation of the Electric Linear Actuator to the actuation circuit,
confirm the electrical rating is compatible with the electrical ratings of the actuation circuit. The Electric Linear
Actuator is available in 24 VDC only.
NOTE: The actuation circuit is rated at 24 VDC, 0.5 Amps. The maximum supervisory current should not
exceed 30mA.
Wiring of the Electric Linear Actuator to the actuation circuit shall comply with NFPA requirements. For more
information review the wiring methods found in NFPA 72, Chapter 17. The method outlined in NFPA is also seen
in Figure 10.
Wiring of the dual leads provided for the Electric Linear Actuator with monitoring switch shall comply with wiring
methods in accordance with the installation instructions provided with the UL Listed control panel for releasing
device service, or as shown in Figure 10.
The removal of the Electric Linear Actuator will result in the internal monitoring switch to close, resulting in the
annunciation of a supervisory signal at a required operator interface for the releasing service fire alarm control panel.
The Electric Linear Actuator shall be installed with UL Listed conduit connectors. By utilizing flexible metal conduit
connectors or liquid-tight conduit connectors, the solenoid coil wires and dual leads for the internal monitoring
switch are mechanically protected from damage.
CAUTION:
Do not electrically activate the Electric Linear Actuator at any time unless the discharge valve outlet has the
Anti-Recoil Device installed or the discharge piping is installed.
Table 7 – Electric Linear Actuator Part Numbers
NOTE: Use of the Electric Linear Actuator is not optional. This part is required to be ordered with the
system should anything other than a local manual actuator be required for actuation
Electric Actuator
Part Number
Voltage
(Nominal) Description Compatible with Cylinder
Valve Size(s)
FTF500125 24 VDC Electric Linear Actuator with
Monitoring Switch All Sizes
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Figure 9 – Electric Linear Actuator
Figure 10- Electronic Linear Actuator Wiring Schematic
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2.1.3 Nozzles
Discharge nozzles are made of aluminum, brass, or stainless steel with female pipe threads. Nozzles are available in
½ in [13 mm], ¾ in [19 mm], 1 in [25 mm], 1 ¼ in [32 mm], 1 ½ in [40 mm], and 2 in [50 mm] nominal connection
sizes. The nozzles are available in 180° sidewall or 360° central discharge patterns. Any combination of types of
nozzles may be used in a single area. When multiple nozzles are employed, the coverage for each nozzle must not
exceed its maximum length and area of coverage. Refer to Section 0for nozzle coverage information.
Figure 11 – Nozzle Examples
2.1.3.1 Part Numbering and Nozzle Types
Refer to Tables 8,9, and 10 for the initial Nozzle part numbers. An additional suffix is required to denote the decimal
size drill diameter of the nozzle orifice.
Figure 12 – Nozzle Port Orientation
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Table 8- Aluminum Nozzle Configurations
The –XXXX of the nozzle part number designates the orifice drill size. Drill diameter size shall be determined using Firetrace flow
calculation software.
Table 9- Brass Nozzle Configurations
The –XXXX of the nozzle part number designates the orifice drill size. Drill diameter size shall be
determined using Firetrace flow calculation software.
Nozzle
Part Number
NPT Pipe Connection Size
(Nominal) Port Orientation Drill Diameter
Range, [in]
FTF610000-XXXX ½ in [13 mm] 360° Central 0.078 - 0.196 FTF610001-XXXX ½ in [13 mm] 180° Sidewall
FTF620000-XXXX ¾ in [19 mm] 360° Central 0.136 - 0.261 FTF620001-XXXX ¾ in [19 mm] 180° Sidewall
FTF630000-XXXX 1 in [25 mm] 360° Central 0.166 – 0.332 FTF630001-XXXX 1 in [25 mm] 180° Sidewall
FTF640000-XXXX 1 ¼ in [32 mm] 360° Central 0.218 – 0.438 FTF640001-XXXX 1 ¼ in [32 mm] 180° Sidewall
FTF650000-XXXX 1 ½ in [40 mm] 360° Central 0.257 – 0.500 FTF650001-XXXX 1 ½ in [40 mm] 180° Sidewall
FTF660000-XXXX 2 in [50 mm] 360° Central 0.328 – 0.657 FTF660001-XXXX 2 in [50 mm] 180° Sidewall
Nozzle
Part Number
NPT Pipe Connection Size
(Nominal) Port Orientation Drill Diameter
Range, [in]
FTF610002-XXXX ½ in [13 mm] 360° Central 0.078 - 0.196 FTF610003-XXXX ½ in [13 mm] 180° Sidewall
FTF620002-XXXX ¾ in [19 mm] 360° Central 0.136 - 0.261 FTF620003-XXXX ¾ in [19 mm] 180° Sidewall
FTF630002-XXXX 1 in [25 mm] 360° Central 0.166 – 0.332 FTF630003-XXXX 1 in [25 mm] 180° Sidewall
FTF640002-XXXX 1 ¼ in [32 mm] 360° Central 0.219 – 0.438 FTF640003-XXXX 1 ¼ in [32 mm] 180° Sidewall
FTF650002-XXXX 1 ½ in [40 mm] 360° Central 0.257 – 0.500 FTF650003-XXXX 1 ½ in [40 mm] 180° Sidewall
FTF660002-XXXX 2 in [50 mm] 360° Central 0.328 – 0.657 FTF660003-XXXX 2 in [50 mm] 180° Sidewall
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Table 10- Stainless Steel Nozzle Configurations
The –XXXX of the nozzle part number designates the orifice drill size. Drill diameter size shall be
determined using Firetrace flow calculation software.
2.2 Optional Components
The components in the following sections are optional meaning they are not required for essential operation of the
Firetrace Engineered Fire Suppression System. Customer requirements, local specifications/standards, and final
system configuration will dictate if they are necessary or required.
2.2.1 Manual Override FTF500126
A Manual Override can be added to cylinder valves in the event a Local Manual Actuator is required. If a Local
Manual Actuator is required, per NFPA 2001, you must also include a Pressure Operated Switch (P/N FTF503013)
The Manual Override mounts to the actuation adapter threads located on top of the Electric Linear Actuator. The
threaded attachment allows for ease of removal for inspection and maintenance purposes.
The Manual Override features a push-button that moves the internal pin downward and manually actuates the
Electric Linear Actuator.
Nozzle
Part Number
NPT Pipe Connection Size
(Nominal) Port Orientation Drill Diameter
Range, [in]
FTF610004-XXXX ½ in [13 mm] 360° Central 0.078 - 0.196 FTF610005-XXXX ½ in [13 mm] 180° Sidewall
FTF620004-XXXX ¾ in [19 mm] 360° Central 0.136 - 0.261 FTF620005-XXXX ¾ in [19 mm] 180° Sidewall
FTF630004-XXXX 1 in [25 mm] 360° Central 0.166 – 0.332 FTF630005-XXXX 1 in [25 mm] 180° Sidewall
FTF640004-XXXX 1 ¼ in [32 mm] 360° Central 0.217 – 0.438 FTF640005-XXXX 1 ¼ in [32 mm] 180° Sidewall
FTF650004-XXXX 1 ½ in [40 mm] 360° Central 0.257 – 0.500 FTF650005-XXXX 1 ½ in [40 mm] 180° Sidewall
FTF660004-XXXX 2 in [50 mm] 360° Central 0.328 – 0.657 FTF660005-XXXX 2 in [50 mm] 180° Sidewall
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Figure 13 –Manual Override
CAUTION:
Do not remove the safety pin until ready to actuate system discharge.
Manual Override
Part Number Parts Required
FTF500126 FTF500125 – Electric Linear Actuator
Table 11- Manual Override Part Numbers
2.2.2 Pneumatic Actuator FTF700041
The Pneumatic Actuator is required if more than one cylinder must be actuated simultaneously. Situations in which
this could arise are:
• Primary/Secondary Cylinder Banks (Figure 13)
• When two systems must operate simultaneously from one electronic signal
The Pneumatic Actuator mounts to the threads on the Actuation Adapter, located on top of the valve assembly. The
Pneumatic Actuator features a pneumatically driven piston that slides downward, thereby depressing the Schrader
Core contained within the actuation adapter, releasing pressure from the cylinder valve and actuating the system.
The pressure required to operate the Pneumatic Actuator is obtained from the “M” port of the primary cylinder.
Multiple cylinders equipped with a Pneumatic Actuator can be activated from one master cylinder using ¼ inch metal
flex hose, see Table 12 and Figure 15 for additional information.
NOTE: Pneumatic Actuators must be mounted directly to the actuation adapter threads on top of the valve. These are not to be
used in a stacked configuration.
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Figure 14 – Pneumatic Actuator
Cylinder Size (Nominal) Cylinder Valve Size Maximum Quantity of
Pneumatic Actuators
Maximum Overall
Length of Actuation Line
(Tube, Pipe or Hose)
35 lb. [15 L] 1 in [25 mm] 7 50 ft. [15.24 m]
70 lb. [29 L] 1 in [25 mm] 7 50 ft. [15.24 m]
150 lb. [62 L] 1 ½ in [40 mm] 7 50 ft. [15.24 m]
250 lb. [103 L] 1 ½ in [40 mm] 7 50 ft. [15.24 m]
375 lb. [153 L] 2 ½ in [65 mm] 6 30 ft. [9.14 m]
560 lb. [227 L] 2 ½ in [65 mm] 6 30 ft. [9.14 m]
900 lb. [368 L] 2 ½ in [65 mm] 6 30 ft. [9.14 m]
1,200 lb. [490 L] 4 in [100 mm] 6 30 ft. [9.14 m]
Table 12 – Pneumatic Actuator Limitations
NOTE: When using the ¼ inch metal flex hose (24 inch or 36 inch), the length of the flex hose is to be subtracted from the maximum
length of tubing to determine the maximum amount of tubing that can be used. At no time may the total length of tubing and the flex
hose exceed the stated lengths under Table 12.
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Figure 15 – Secondary Control Arrangement Example
2.2.3 Discharge Flex Hoses
Discharge flex hoses are used to connect the agent storage containers to the manifold in single or multiple
(manifolded or main/reserve) cylinder arrangements. The 1 in [25mm] and 1 ½ in [40mm] discharge flex hoses are
constructed of high pressure hydraulic rubber. The 2 ½ in [65 mm] and 4 in [100 mm] discharge flex hoses are
constructed of stainless steel braided hose. The 1 in [25 mm], 1 ½ in [40 mm] and 2 ½ in [65 mm] sizes are fitted with
male NPT threads on both ends. The 4 in [100 mm] sizes are fitted with grooved ends.
The recommended assembly configuration is to install an elbow to the cylinder valve discharge outlet, then install
the flex hose between the elbow and a check valve, with the check valve connected to the appropriate fitting in the
manifold.
Figure 16 – Flex Hoses
Primary Cylinder Secondary Cylinder Secondary Cylinder
A
B
C
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Table 13 – Flex Hose Dimensions
2.2.4 Check Valves
Check Valves must be used anytime more than one cylinder is discharging into a common pipe network. This occurs
when:
• Cylinders set up in a Primary/Secondary arrangement
• Main/Reserve arrangements
Their purpose is to prevent loss of agent if any of the agent storage cylinders are not connected to the manifold at
time of system discharge.
All component valve bodies are constructed of brass for durability and protection against corrosion, except for the
4 inch, which is constructed of steel. All check valves have a wrench flat on the outer surface for installation. Check
valves may be installed in the vertical or horizontal position.
Figure 17 – Check Valve
Flex Hose
Part
Number
Flex Hose Size
(Nominal)
Dimension "A" Dimension "B" Dimension "C"
Fitting Style, Size
in mm in mm Fitting Style Size (Nominal)
FTF701004 1 in [25 mm] 18 457.2 2.25 57.2 NPT 1 in
FTF701504 1 ½ in [40 mm] 18 457.2 2.75 69.9 NPT 1 ½ in
FTF702502 2 ½ in [65 mm] 18 457.2 3.5 88.9 NPT 2 ½ in
FTF704001 4 in [100 mm] 30.5 762.0 5 127.0 Grooved 4 in
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Check Valve
Part Number
Check Valve Size
(Nominal)
Dimension "A" Dimension "B" Dimension "C"
Fitting Style, Size
in mm in mm Fitting Style
(female) Size (Nominal)
FTF701001 1 in [25 mm] 2.76 70.1 1.93 49.0 NPT 1 in
FTF701501 1 ½ in [40 mm] 3.17 80.5 2.87 72.9 NPT 1 ½ in
FTF702501 2 ½ in [65 mm] 4.37 111.0 4.39 111.5 NPT 2 ½ in
FTF704003 4 in [100 mm] 5.38 137.0 6.00 152.0 Grooved 4 in
Table 14 – Check Valve Dimensions
2.2.5 Main/Reserve Selector Switch FTF502001
The Main/Reserve Selector Switch is a means of transferring the electrical supply from the main cylinder releasing
solenoid to the reserve cylinder releasing solenoid.
Figure 18 – Main/Reserve Selector Switch
2.2.6 Pressure Operated Switch FTF503013
The Pressure Operated Switch provides additional electrical contacts for indication of discharge, see Figure 19. The
switch may be installed into the same pneumatic line for the piston actuators, provided the maximum length for
tubing outlined in Table 12 is not exceeded. The switch may also be connected to any point of the discharge piping
between the cylinder and nozzle. The Pressure Operated Switch must be included in the system if a Local Manual
Actuator is used to be compliant with NFPA 2001
Switch Specification
Electrical Rating : 240 VAC – 3 A, 24 VDC – 3 A
Switch : Single pole, double throw (SPDT) snap action
Contacts : NO, NC, and Common
Pressure setting : 20 ± 10 psig [1.4 ± 0.7 bar] actuation upon pressure rise
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Figure 19- Pressure Operated Switch
2.2.7 Liquid Level Indicator
The Firetrace Liquid Level Indicator is a simple, manually operated device which provides a means to determine the
clean agent liquid level in vertically mounted agent storage containers. Once the liquid level is determined, it can
then be converted into pounds (kilograms) of clean agent present in the agent storage container.
A float equipped with a magnet moves with the liquid level along the unit stem. Level readout is obtained by simply
removing the protective cap and pulling out a calibrated tape until magnetic interlock with the float is felt. With the
tape in this position, the readout is obtained at the point where the tape emerges from the unit housing. Using the
graph (per cylinder size) located in Appendix B – Liquid Level Indicator Charts, to determine the corresponding
amount of clean agent in the cylinder. Graph data is for conditions at 32 °F [0 °C], 70 °F [21 °C], and 130 °F [54.4 °C].
Liquid Level Indicator
Part Numbers Cylinder Sizes (Nominal)
FTF720150 150 lb. – 250 lb. [62 L – 103 L]
FTF720375 375 lb. – 900 lb. [153 L – 368 L]
FTF721200 1,200 lb. [490 L]
Table 15- LLI Part Numbers
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Figure 20- LLI Illustration
2.3 Non-Firetrace Supplied Items
The items listed in the section below are to be sourced through local suppliers. These items are essential to the
installation of the Firetrace system, however they are not supplied by Firetrace. To ensure the items meet proper
industry as well as UL and NFPA 2001 standards they must meet the following criteria. If they do not conform to
the noted standards the system is not in compliance with the established limitations.
2.3.1 Pipe, Fittings, and Pipe Supports
All piping must be installed in accordance with good commercial practices and applicable national standards.
2.3.1.1 Pipe Requirements
Piping must be Schedule 40 steel pipe, either galvanized or black. Specifications ASTM A-53 or A-106, ANSI B36.10
must be used for steel pipe. Where Schedule 40 steel pipe is not used, piping shall be in accordance with the
requirements of NFPA 2001.
NOTE: Cast iron pipe and steel pipe to specification ASTM A-120 or non-metallic pipe shall NOT be used.
NOTE: All piping must be thoroughly cleaned to remove burrs and swabbed with a degreasing solvent
to remove all traces of cutting oils and chips.
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2.3.2 Pipe Fittings and Piping Joining
Piping, fittings, and pipe supports shall be in accordance with the latest edition of NFPA 2001 available from National
Fire Protection Association. Also, consult ANSI B31.1., The Power Piping Code. Temperature ratings of the fittings
must not be exceeded. All threaded joints must be in accordance with ANSI B20.1. Ductile iron 300-pound class or
higher ASTM A-395, or steel ASTM A-234 is acceptable. The method of joining all pipe must be in accordance with
the latest requirements listed in NFPA 2001. Acceptable fittings include screwed, flanged, welded, or grooved.
NOTE: Grooved fittings are to be machined groove or rolled grooved only.
2.3.3 Piping Reductions
Reductions in pipe size can be made by using concentric “bell” reducers or reducing bushing fittings after the tee.
2.3.4 Pipe Supports
The piping system shall be securely supported by listed and/or approved hangers. Pipe supports must be installed
with allowance for expansion and contraction and must be rated to support the dead weight of the piping and the
thrust forces of the HFC-227EA discharge. Refer to ANSI B31.1 for bracing requirements.
NOTE: Discharge piping, no matter what length, must be rigidly supported with pipe hangers and supports to structural members
to prevent potential cylinder valve rotation. Consult ANSI B31.1.
Section 3: Design
3.1 Introduction
The design section provides an understanding of the characteristics of HFC-227EA in relation to its flow from its
storage container, through the piping network and discharging from the distribution nozzles. Information is also
given for the authority having jurisdiction for approving the system installation. Systems shall be installed and
maintained in accordance with NFPA 2001, all applicable codes and regulations, and this manual.
The Firetrace Engineered HFC-227EA System is primarily designed for total flooding applications to extinguish
Class A, B, and C type fires. For systems requiring extended discharge or “local application” design please contact
Firetrace for additional guidance.
In general, HFC-227EA systems are not suitable in fire suppression applications involving hazards other than
Class A, B, or C fuels. The concentration by volume for flame extinguishment for various liquids and gases included
in NFPA 2001 are shown in Table 16.
CAUTION:
Clean agent shall NOT be used on fires involving the following materials:
1. Certain chemicals or mixtures of chemicals, such as cellulose nitrate and gunpowder, which are capable
of rapid oxidation in the absence of air.
2. Reactive metals such as lithium, sodium, potassium, magnesium, titanium, zirconium, uranium, and
plutonium.
3. Metal hydrides.
4. Chemicals capable of undergoing auto-thermal decomposition, such as certain organic peroxides and
hydrazine.
It is important that every system be designed to provide maximum extinguishing characteristics and that the
limitations stated in this manual are followed.
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3.2 Defining the Scope of Protection
Before performing any calculations, the following hazard information must be established to determine the proper
design parameters required to sufficiently protect the hazard:
1. The hazard class: A, B, or C. Based on the class of fire, the design concentration by volume will be assigned.
2. Pressure Adjustment: The design quantity of agent shall be adjusted to compensate for ambient pressures
that vary with elevations greater than 3,000 ft. [915 m] above standard sea level.
3. The minimum and maximum temperature of the agent storage cylinder(s) must be established.
4. The minimum and maximum ambient temperature in the volume being protected must be established.
5. The exact internal dimensions of the hazard; in terms of length, width and height.
6. Will materials, stock, etc. that accrue on a daily basis affect the volume in any appreciable amounts?
7. If any air handling equipment is assigned to the hazard, review equipment capacity as to air changes per
hour. A hold time of the agent after discharge must be taken into consideration.
3.2.1 Ventilation and Unclosable Openings
Openings in the hazard volume must be sealed. When the system is discharged into an enclosure, normal gaps and
openings under doorways must not impact system performance. Doors and normal vents that are required in the
enclosure must be closed prior to, or at the time of system discharge. Doors or closures that normally swing to a
closed position and are not held open do not require a system-generated mechanism to operate. Doors and closures,
including ventilation, which are held open while operating must have devices installed to close at the start or prior
to system discharge. All doors should be closed and ventilation fans shut down prior to discharge.
3.3 Amount of Agent Required
3.3.1 Minimum Design Concentration
Minimum design concentrations required for Class A, B, and C fire extinguishment can be found in the table below.
The minimum design concentrations are referenced from NFPA 2001, 2018 edition. Please refer to the applicable
edition of NFPA 2001 for the most correct information.
For Class B hazards, refer to Annex B of NFPA 2001 for the cup burner extinguishment concentration value of the
particular Class B fuel(s) to be protected. Choose the fuel with the highest cup burner extinguishment value in the
hazard and apply a 30% safety factor (multiply this extinguishment concentration value by 1.3) for the design
concentration. The minimum design concentration for the protection of all Class B hazards shall be 5.9%. Contact
Firetrace for guidance on hazards deviating from these requirements or for fuels not listed.
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Fuel Concentration % by Volume (Per NFPA 2001)
Class A
The minimum design concentration for a Class A hazard shall be the minimum extinguishing concentration for
Heptane as determined by UL2166, 2127 or equivalent test standard.
6.7%
Class B
The design concentration of a Class B fire shall be the greater value of the two following scenarios:
A) The Highest cup burner extinguishing value of Class B fuel found within protected hazard, times a safety
factor of 1.30.
B) The cup burner value of Heptane (6.7%) times a factor of safety of 1.30
This value is typically:
8.7%
Class C
The minimum design concentration for a Class C hazard shall be the extinguishing concentration for a Class A
hazard as determined by UL 2166 (5.2%) times a safety factor of 1.35.
7.0%
Table 16 – Minimum Design Concentrations (MDC)
3.3.2 Agent Storage Temperature
CAUTION:
The highest and lowest foreseeable container operating/storage temperatures must be input into the software
calculation to accurately predict flow characteristics.
Hazard enclosure temperature will impact the agent quantity required. The higher the enclosure temperature, the
less HFC-227EA agent is required. Conversely, the lower the enclosure temperature, the more HFC-227EA agent is
required. When calculating the minimum required amount of agent, always use the lowest foreseeable temperature.
3.3.3 Pressure Adjustment
The design quantity of agent shall be adjusted to compensate for ambient pressures that vary with elevations
greater than 3,000 ft. [915 m] above standard sea level, see Table 17 for the list of multipliers.
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Altitude Enclosure Pressure Correction
Factor (CF) ft. km psia mm Hg
-3,000 -0.92 16.25 840 1.11
-2,000 -0.61 15.71 812 1.07
-1,000 -0.30 15.23 787 1.04
0 0.00 14.70 760 1.00
1,000 0.30 14.18 733 0.96
2,000 0.61 13.64 705 0.93
3,000 0.91
13.12 678 0.89
4,000 1.22
12.58 650 0.86
5,000 1.52 12.04 622 0.82
6,000 1.83 11.53 596 0.78
7,000 2.13 11.03 570 0.75
8,000 2.45 10.64 550 0.72
9,000 2.74 10.22 528 0.69
10,000 3.05 9.77 505 0.66
Table 17– Atmospheric Correction Factor
3.3.4 Flooding Factors
Table 18 – Typical Application Flooding Factors – US Customary Units
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Table 19 – Typical Application Flooding Factors – SI Units
3.3.5 Agent Calculation
The minimum required amount of agent can be calculated from either of the following formulas:
W = V * C.F. * F.F.
𝑉=𝐶.𝐹.(𝑉
𝑠(𝐶
100 −𝐶))
For US Customary Units:
W = weight of agent (lb.)
V = volume of enclosure to be protected (ft3)
F.F. = flooding factor (see Table 18 or 19)
C.F. = atmospheric correction factor (see Table 17)
s = specific volume of superheated HFC-227ea vapor (ft3/lb.)
This can be approximated by the formula:
s = 1.885 + 0.0046*t
t = design temperature in the hazard area (°F)
C = concentration of agent required (%)
NOTE: The agent required is always rounded up to the nearest whole pound when determining agent fill in US Customary Units.
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For SI Units:
W = weight of agent (kg)
V = volume of enclosure to be protected (m3)
F.F. = flooding factor (see Table 18 or 19)
C.F. = atmospheric correction factor (see Table 17)
s = specific volume of superheated HFC-227ea vapor (m3/kg)
This can be approximated by the formula:
s = 0.1269 + 0.0005*t
t = design temperature in the hazard area (°C)
C = concentration of agent required (%)
NOTE: The agent required is always rounded up to the nearest half kilogram when determining agent fill in SI
Units.
NOTE: Care must be taken that the calculated concentration for normally occupied spaces at the highest expected
ambient temperature in the space does not exceed 10% V/V, per NFPA 2001.
NOTE: This calculation includes an allowance for the normal leakage from a “tight” enclosure due to agent
expansion.
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3.4 Design Parameters
The flow of HFC-227EA through the discharge piping is a complex two-phase flow. The Firetrace HFC-227EA
Engineered Systems have been investigated and comply with UL test standards for clean agents. NFPA 2001
compliance, or other international codes where applicable, shall be followed by the system designer. The flow
calculation software and design parameters are intended to insure proper application for “balanced” and
“unbalanced” systems.
For unbalanced systems, one or more of the following conditions apply:
1. Unequal flow rates at one or more nozzles.
2. Unequal orifice areas in multiple nozzle systems.
3. Unequal pipe sizes and/or lengths of branch legs.
4. Odd number of nozzles.
5. Both bullhead tees and side/thru tee applications are used.
The hydraulic flow calculation program will select the pipe sizes for each section in the piping network based on the
HFC-227EA flow rate for each section. However, if so desired, pipe sizes can be manually input into the program.
The verification of flow testing was conducted at 500 psi and 70 °F ± 10 °F, using the specified piping and fittings
available within the manual. If storage temperature is outside the ± 10 °F temperature range and the piping and
fittings are varied from the specified piping, there is a risk that the system may not supply the designed quantity of
extinguishing agent.
Duration of Discharge 10 sec maximum
6 sec minimum
Agent to Pipe Volume 82.1%
Limit of Agent Before First Tee 9.3%
Minimum Orifice Area to Pipe Ratio 10% [½ in nozzles] or 20% [all others]
Maximum Orifice Area to Pipe Ratio 81.3%
Minimum Nozzle Pressure 68 psig [4.7 bar]
Maximum Arrival Time Imbalance 1.02 sec
Maximum Run-out Time Imbalance 2.16 sec
Table 20 – Design Limitations
* NOTE: The maximum difference in transport time limitation has been found as an acceptable means of evaluating maximum
allowable nozzle arrival and runout imbalances.
3.4.1 Pipe Limitations
The table below provides an indication of flow rate through a range of pipe sizes. A flow calculation shall be
performed to confirm both pipe sizing and feasibility of the piping network.
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NPT Pipe Size
(Nominal), [in]
Flow Rate Range Pipe Type [lbm/sec] [kg/sec]
½ 0.7 - 3.4 0.32 - 1.54 SCH 40
¾ 2.0 - 5.8 0.90 - 2.63 SCH 40
1 3.4 - 8.4 1.54 - 3.81 SCH 40
1 ¼ 5.8 - 13.0 2.63 - 5.90 SCH 40
1 ½ 8.4 - 19.5 3.81 - 8.85 SCH 40
2 13.0 - 33.0 5.89 - 14.97 SCH 40
2 ½ 19.5 - 58.0 8.85 - 26.31 SCH 40
3 33.0 - 95.0 14.96 - 43.09 SCH 40
4 58.0 - 127.0 26.30 - 57.61 SCH 40
5 95.0 - 222.0 43.09 - 100.70 SCH 40
6 127.0 - 317.8 57.60 - 144.15 SCH 40
Table 21 – Minimum and Maximum Flow Rate Guidelines
3.4.2 Tee Limitations
To obtain the most economical piping for a given hazard layout, tees are employed to branch the HFC-227EA flow
to the various locations within the hazard or multiple hazards. The exit branches of the tees must be in the horizontal
plane. The maximum and minimum percent imbalances permitted are shown below in Table 22.
Description Limitation, [%] Figure
Maximum Bullhead Tee Imbalance 30/70 Figure 21
Minimum Bullhead Tee Imbalance 50/50 Figure 22
Maximum Side Tee Imbalance 35/65 Figure 23
Minimum Side Tee Imbalance 10/90 Figure 24
Bullhead tees shall have both outlets in the same horizontal plane Figure 25
Side tee splits shall have the inlet and both outlets in the same
horizontal plane Figure 26
Minimum distance of elbow before tee splits 10 nom pipe
diameter Not Shown
Minimum distance between tee splits 10 nom pipe
diameter Not Shown
Table 22 – Tee Limitations
*When using a Side T, the strait through path is always the path always has the highest flow.
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Figure 21 – Maximum Bull Tee Imbalance
Figure 22 – Minimum Bull Tee Imbalance
Figure 23 – Maximum Side Tee Imbalance
Figure 24 – Minimum Side Tee Imbalance
70%
100% 30%
50%
100% 50%
90%
100%
10%
65%
100%
35%
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Figure 25 – Bull Tee Configurations
Figure 26 – Side Tee Configurations
3.5 Storage Cylinders
The following are configurations for cylinder use in the engineered design method:
1) Single hazard with one cylinder and its piping and nozzle system.
2) Single hazard with multiple cylinders, each with their own piping and nozzle system.
3) Single hazard with multiple cylinders discharging through a common piping and nozzle system.
4) Multiple hazards with one cylinder discharging through its piping and nozzle system.
5) Multiple hazards with multiple cylinders discharging through a common piping and nozzle system.
3.5.1 Manifolding
When required by hazard size, a manifold may be used to connect multiple cylinders together to feed the common
piping network. Details of these configurations are as follows.
NOTE: When designing systems connected to a common pipe network, all connected cylinders must be of the same size and fill
density.
NOTE: If the hazard requires an even number of cylinders, a center outlet manifold can be used. If the hazard requires an odd
number of cylinders, an end outlet type of manifold is required.
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Figure 27- Typical Center Outlet Manifold
Figure 28- Typical End Outlet Manifold
Check Valve
Flex Hose
Union Elbow
Union Elbow
Check Valve
Flex Hose
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3.6 Nozzle Coverage
3.6.1 Area
Nozzles shall be installed vertically upright or vertically down (pendant) with the outlet path of the nozzles projected
perpendicular to the walls of the enclosure.
The 360° central nozzle shall be installed centrally in the hazard where possible, see Figure 29. The maximum linear
coverage shall not exceed 28 ft. 3-5/16 in [8.62 m].
When installing the 180° type nozzle, the outlet ports are to be oriented directly opposite the wall on which the
nozzle is being installed. A single 180° sidewall nozzle shall be installed adjacent to a wall, see Figure 29
Two 180° nozzles may be installed centrally in the hazard in a “back-to-back” orientation, providing a larger area of
coverage, see Figure 30. The Linear throw from the nozzle to any one point in the hazard shall not exceed 44 ft. 8-
11/16 in [13.63 m] for a single nozzle.
NOTE: Maximum coverage area may not exceed 1600 sq. ft. per nozzle
Figure 29- 360° Central Nozzle Coverage
40 ft. [12.19 m]
40 ft. [12.19 m]
28 ft. 5-3/16 in
[8.67 m]
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80 ft. [24.38 m]
Figure 29 – 180° Single Sidewall Nozzle Coverage
Figure 30 – Back to Back Dual Sidewall Nozzle Coverage
40 ft. [12.19 m]
40 ft. [12.19 m]
44 ft. 8-11/16 in
[13.63 m]
40 ft. [12.19 m]
Minimum
Distance: 4 in
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3.6.2 Height
Nozzles shall be installed 2 to 12 inches down from the top of the hazard when referenced from the ceiling. When
referencing the wall to the nozzle, the range of installation is from 0 to 12 inches from the wall to the center of the
nozzle, see Figure 30 for illustration.
All nozzles are rated for a maximum hazard height of 16 ft. [4.88 m], see Figure 31 and 32 for examples. If the hazard
exceeds 16 ft. [4.88 m] in height, multiple tiers of nozzles must be used for each 16 ft. [4.88 m] increment of
enclosure of height, see Figure 33 for an example.
Listed below are the elevation difference limitations for the system design, these are also illustrated in Figure 34
1) If nozzles are only located above the container outlet, the maximum elevation difference between the
container outlet and the farthest horizontal pipe run or discharge nozzle (whichever is furthest) shall not
exceed 30 ft. [9.14 m].
2) If nozzles are only located below the container outlet, the maximum elevation difference between the
container outlet and the farthest horizontal pipe run or discharge nozzle (whichever is furthest) shall not
exceed 30 ft. [9.14 m].
3) If nozzles are located above and below the container outlet, the maximum elevation difference between
the farthest horizontal pipe runs or nozzles (whichever is furthest) shall not exceed 30 ft. [9.14 m].
The minimum hazard height at maximum nozzle spacing is 1 ft. [0.30 m]. For hazard heights less than 1 ft. [0.30 m],
nozzle quantity and spacing density must be increased. Contact Firetrace for additional guidance.
Figure 30 – Nozzle Installation Limitations
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Figure 31 – Single Sidewall Nozzle Height Limit
Figure 32 – Single Central Nozzle Height Limit
16 ft. [4.88 m]
16 ft. [4.88 m]
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Figure 33 – Tiered Nozzle Example
Figure 34- Nozzle Elevation Difference
16 ft. [4.88 m]
16 ft. [4.88 m]
32 ft. [9.75 m]
30 ft. [9.14 m]
30 ft. [9.14 m]
30 ft. [9.14 m]
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3.6.3 Equivalent Length Data
Table 23 – Equivalent Length Assemblies
Nominal Size Valve and
Siphon Tube
Discharge
Flex Hose Check Valve Shuttle
Valve
ft m ft m ft m ft m
1 in (35 lb) 16.5 5.0 7.0 2.1 5.2 1.6 8.1 2.5
1 in (70 lb) 17.5 5.3 7.0 2.1 5.2 1.6 8.1 2.5
1 ½ in 28.3 8.6 7.6 2.3 37.7 11.5 12.3 3.7
2 ½ in 30.8 9.4 11.6 3.5 20.4 6.2 N/A
4 in 75.0 22.9 10.0 3.0 40.5 12.3 N/A
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3.7 Example Calculation
An example calculation is contained below.
Figure 35- Sample Calculation Layout
Scope of Protection
Three volumes require protection:
1. Equipment Room: 10 ft. x 20 ft. x 8 ft. (L x W X H)
2. Tape Library: 15 ft. x 10 ft. x 8 ft. (L x W x H)
3. Storage Room: 15 ft. x 10 ft. x 8 ft. (L x W x H)
Concentration specified, by the requirements of the end user are 6.7% for Class A Hazard.
Minimum ambient temperature: 70 °F [21 °C]
Application Elevation: <1,000 ft. [<0.30 km]
Agent Calculation
Equipment Room:
Area (A):
A = L W
A = 10 ft. x 20 ft. = 200 ft²
A = 3.05 m 6.10 m = 18.61 m2
Volume (V):
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V = H A
V = 8 ft. 200 ft2 = 1,600 ft3
V = 2.44 m 18.61m2 = 45.41 m3
Minimum Required Agent Amount (W):
W = V F.F.
W = 1,600 ft³ .03254 lb./ft3 = 52.064 lb. or 53 lb. after rounding
W = 45.41 m3 x 0.5233 kg/m3 = 23.763 kg or 24 kg after rounding
Tape Library:
Area (A):
A = L W
A = 15 ft. 10 ft. = 150 ft²
A = 4.57 m x 3.05 m = 13.94 m2
Volume (V):
V = H A
V = 8 ft. 150 ft² = 1,200 ft³
V= 2.44 m x 13.94 m2 = 34.01 m3
Minimum Required Agent Amount (W):
W= V F.F.
W = 1,200 ft³ 0.03254 lb./ft3 = 39.04 lb. or 40 lb. after rounding
W = 34.01 m3 x 0.5233 kg/m3 = 17.79 kg or 18 kg after rounding
Storage Room:
Area (A):
A = L W
A = 8 ft. 10 ft. = 80 ft²
A = 2.95 m x 3.05 m = 9 m2
Volume (V):
V = H A
V = 8 ft. 150 ft² = 640 ft³
V= 2.44 m x 13.94 m2 = 21.96 m3
Minimum Required Agent Amount (W):
W= V F.F.
W = 640 ft³ .03254 lb./ft3 = 20.82 lb. or 21 lb. after rounding
W = 21.96 m3 x 0.5233 kg/m3 = 11.49 kg. or 11.5 kg. after rounding
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Total Agent Quantity
Agent Amount [lb.] Agent Amount [kg]
Equipment Room 53 24
Tape Library 40 18
Storage Room 21 11.5
Total 114 53.5
Table 24 – Total Amount of Agent Required
3.7.1 Cylinder Selection
Referring to Table 4, the following system assembly should be selected:
Assembly Number : FTF000062
Nominal Size : 160 lb. [62 L]
Minimum Fill Weight : 33 lb. [15.0 kg]
Maximum Fill Weight : 164 lb. [74.0 kg]
3.7.2 Software Output Example
Please refer to Appendix A – Flow Calculation Example.
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Section 4: Operation and Maintenance
4.1 Component Verification
WARNING:
Electrically operated control devices that are not supervised, are not to be removed during the installation and/or servicing of the
system.
4.1.1 Electric Linear Actuator FTF500125
WARNING:
Prior to any functional tests, supervised electrically operated releasing devices must be electrically disabled to prevent cylinder
discharge during inspection and/or maintenance.
The Electric Linear Actuator can be tested with the following procedure:
1) Disconnect the supervisory leads from the control panel.
2) Remove the Electric Linear Actuator from the Top Plug Actuation Adapter.
3) Reconnect the supervisory leads to the control panel.
4) Energize the Electric Linear Actuator by cycling the control panel. The Electric Linear Actuator pin will move
downward.
5) De-energize the Electric Linear Actuator and disconnect the supervisory leads from the control panel.
6) Manually push the pin to the top of the Electric Linear Actuator assembly.
7) Once the pin is reset, return the Electric Linear Actuator to the Top Plug Actuation Adapter.
8) Reconnect the supervisory leads to the control panel.
CAUTION:
Do not return the Electric Linear Actuator to the Top Plug Actuation Adapter without resetting the pin.
If you do not reset the pin, the valve will discharge.
Figure 36- Electronic Linear Actuator Layout
4.1.2 Manual Override FTF500126
The Manual Override can be tested with the following procedure:
1) Remove the Manual Override from the top of the Electric Linear Actuator.
2) Remove the safety pull pin.
3) Operate the push-button and observe that the internal pin fully travels downward.
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4) Reset the Manual Override push-button. Push the internal pin firmly to the top of the assembly.
5) Return the safety pull pin to the assembly.
6) Return the Manual Override to the top of the Electric Linear Actuator.
CAUTION:
Do not return the Manual Override to the top of the Electric Linear Actuator without resetting the internal pin.
If you do not reset the pin, the valve will discharge.
CAUTION:
Ensure the safety pull pin is correctly installed and secured in the Manual Override assembly until the system is to be activated by
use of the device.
Figure 39- Stacked Electronic Linear Actuator and Manual Override
4.1.3 Pneumatic Actuator FTF700041
The Pneumatic Actuator can be tested with the following procedure:
1) Detach ¼ inch flex hose or actuation tubing from the top of the Pneumatic Actuator.
2) Remove the Pneumatic Actuator from the Top Plug Actuation Adapter.
3) Attach a regulated nitrogen source to the top of the Pneumatic Actuator.
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4) Apply 20 – 25 psig pressure to the top of the Pneumatic Actuator. The piston rod must travel a full stroke,
becoming locked into place.
5) Relieve pressure from the top of the Pneumatic Actuator.
6) Reset the internal piston of the Pneumatic Actuator. Push the internal piston firmly to the top of the
assembly.
7) Return the Pneumatic Actuator to the Top Plug Actuation Adapter.
8) Attach the ¼ inch flex hose or actuation tubing to the top of the Pneumatic Actuator.
CAUTION:
Do not return the Pneumatic Actuator to the Top Plug Actuation Adapter without resetting the internal piston
Figure 37- Pneumatically Operated Cylinder Assembly
4.1.4 Liquid Level Indicator operation
Level readout is obtained by simply removing the protective cap and pulling out the calibrated tape until magnetic
interlock with the float is felt. With the tape in this position, the reading is obtained at the point where the tape
emerges from the unit housing. With the graph (one per cylinder size) the tape reading is converted to pounds of
clean agent in the cylinder. Graph data is for conditions at 0 °F [-17.7 °C], 70 °F [21 °C], and 130 °F [54.4 °C]. Tolerance
is ± 2% of cylinder fill weight. From the reading in inches Y axis, trace to the intercept line and drop down to the X
axis for the read indication of agent fill in the cylinder.
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4.2 Inspection Schedule
Only Firetrace qualified HFC-227EA recharge personnel shall inspect cylinder, valve, and controls for operability or
damage.
4.2.1 Weekly
The following are to be performed on a weekly basis by the owner or designated personnel:
1) Check pressure gauge on cylinder valve(s). If the pressure is 10% below the pressure required for the
temperature of the cylinder at time of inspection, the cylinder must be serviced by an authorized Firetrace
distributor.
2) Check for physical damage or missing parts of the HFC-227EA system hardware.
3) Check that the discharge nozzles are properly oriented and secured.
4) Check for obstructions that would interfere with nozzle discharge pattern or mechanical operation of the
system.
5) Check that all tamper seals are intact and properly secured.
4.2.2 Semi-Annual
The semi-annual maintenance is to be performed by an authorized Firetrace distributor:
1) Repeat weekly inspection.
2) Check agent quantity and pressure of refillable containers. If a container shows a loss in net weight of more
than 5% or a loss in pressure (adjusted for temperature) of more than 10%, it shall be refilled or replaced.
3) Perform functional test of all component parts of the entire system. Follow instructions provided in
Section4.1: Component Verification.
NOTE: Inspection of the 38 lb. [15 L] and 75 lb. [29 L] units must include being weighed. The 160 lb. [62 L], 270 lb. [103 L], 400 lb.
[153 L], 600 lb. [227 L], 950 lb. [368 L] and the 1,300 lb. [490 L] units can be inspected using the Liquid Level Indicator or by being
weighed.
NOTE: This system consists of components tested within limitations contained in this manual. The designer of this system must be
consulted prior to any planned changes to either the system or the area being protected. An authorized Firetrace distributor must
be consulted after the system has discharged.
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Section 5: Post Discharge
5.1 Enter the Protected Enclosure
In the event of a discharge or fire, trained first responders must provide clearance of the enclosure to ensure it has
been be properly vented to remove any residual suppressant and Thermal Decomposition Products. HFC-227EA
does not leave a residue, thus, there are no clean-up operations resulting from an HFC-227EA discharge. An
authorized Firetrace distributor must be consulted after the system has discharged to service the system. The
cylinder must be removed from the bracket to be recharged with HFC-227EA and re-pressurized with dry nitrogen.
5.2 Remove from Service
The subsequent steps should be followed when removing a system from service:
1) Disconnect power source from all actuation and monitoring devices
2) Remove cylinder piping from cylinder valves.
3) Attach Anti-Recoil Device on all cylinder valve outlets.
4) Disconnect all cylinder assembly electronic devices
5) Loosen cylinder bracketing and remove cylinders.
6) Secure until a qualified Firetrace technician can remove the system for service.
7) Have cylinders recharged by a qualified Firetrace HFC-227EA recharge facility.
8) Replace all parts as necessary. Check nozzles for any damage, misalignment, or foreign matter. After system
discharges through a check valve, functionally test the check valve for free movement.
5.3 Return to Service
The subsequent steps should be followed when returning a system to service:
1) Replace cylinder(s) in bracket(s) and secure brackets.
2) Remove Anti-Recoil Device from all cylinder valve outlets.
3) Reconnect discharge piping.
4) Reset control panel.
5) Re-install all cylinder valve controls, follow instructions given in Section 4: Operation and Maintenance.
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Section 6: Parts Lists
6.1 Base HFC-227EA Cylinder and Valve Assemblies
Part Number Description
FTF000035 35 lb. [15 L] Cylinder / 1 in [25 mm] Valve Assembly
FTF000070 70 lb. [29 L] Cylinder / 1 in [25 mm] Valve Assembly
FTF000150 150 lb. [62 L] Cylinder / 1 ½ in [40 mm] Valve Assembly
FTF000250 250 lb. [103 L] Cylinder / 1 ½ in [40 mm] Valve Assembly
FTF000375 375 lb. [153 L] Cylinder / 2 ½ in [65 mm] Valve Assembly
FTF000560 560 lb. [227 L] Cylinder / 2 ½ in [65 mm] Valve Assembly
FTF000900 900 lb. [368L] Cylinder / 2 ½ in [65 mm] Valve Assembly
FTF001200 1,200 lb. [490 L] Cylinder / 4 in [100 mm] Valve Assembly
Table 25 – Base System Assemblies
6.2 Cylinder Valve Controls and Monitoring Devices
Part Number Description
FTF500125 Electric Linear Actuator with Monitoring Switch (24 VDC)
FTF500126 Manual Override for Electric Linear Actuator
FTF502001 Main/Reserve Switch
FTF503007 Pressure Supervisory Switch, 300 psig
FTF503013 Pressure Operated Switch
FTF700041 Pneumatic Actuator, Next Gen
Table 26 – System Releasing and Monitoring Devices
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6.3 Engineered Nozzles
See Section 2.1.3 for Nozzle Part Numbers and Drill Sizing
6.4 System Accessories
Part Number Description
FTF700024 Flex Hose, Actuation, 24 in
FTF700025 Flex Hose, Actuation, 36 in
FTF700004 Flex Hose, Actuation, 48 in
FTF701004 Flex Hose, Discharge, 1 in
FTF701504 Flex Hose, Discharge, 1 ½ in
FTF702502 Flex Hose, Discharge, 2 ½
FTF704001 Flex Hose, Discharge, 4 in
FTF701001 1 in [25 mm] Check Valve
FTF701501 1 ½ in [40 mm] Check Valve
FTF702501 2 ½ in [65 mm] Check Valve
FTF704003 4 in [100 mm] Check Valve
FTF720150 Liquid Level Indicator – 150 lb. [62 L] and 250 lb. [103 L]
FTF720375 Liquid Level Indicator – 375 lb. [153 L], 560 lb. [227 L], and 900 lb. [368 L]
FTF721200 Liquid Level Indicator – 1,200 lb. [490 L]
Table 27- System Accessories
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6.5 Legacy Parts
Part Number Description
FTF200035 35 lb. [15 L] Cylinder / 1 in [25 mm] Valve No Top Cap Assembly
FTF200070 70 lb. [29 L] Cylinder / 1 in [25 mm] Valve No Top Cap Assembly
FTF200150 150 lb. [62 L] Cylinder / 1 ½ in [40 mm] Valve No Top Cap Assembly
FTF200250 250 lb. [103 L] Cylinder / 1 ½ in [40 mm] Valve No Top Cap Assembly
FTF200375 375 lb. [153 L] Cylinder / 2 ½ in [65 mm] Valve No Top Cap Assembly
FTF200560 560 lb. [227 L] Cylinder / 2 ½ in [65 mm] Valve No Top Cap Assembly
FTF200900 900 lb. [368L] Cylinder / 2 ½ in [65 mm] Valve No Top Cap Assembly
FTF201200 1,200 lb. [490 L] Cylinder / 4 in [100 mm] Valve No Top Cap Assembly
FTF500011 Electric Solenoid (12 VDC) for valves: 1 in [25 mm], 1 ½ in [40 mm], 2 ½ in [65 mm]
FTF500023 Electric Solenoid (24 VDC) for valves: 1 in [25 mm], 1 ½ in [40 mm], 2 ½ in [65 mm]
FTF501223 Electric Solenoid (24 VDC) for valve: 4 in [100 mm]
FTF700010 Manual Actuator (not compatible with linear actuator – direct valve fitment only)
FTF400035 Single wall strap for 38 lb [15 L] (one required)
FTF400035 Single wall strap for 75 lb [29 L] (one required)
FTF400150 Single wall strap for 160 lb [62 L] (one required)
FTF400250 Single wall strap for 270 lb [103 L] (one required)
FTF400250 Single wall strap for 400 lb [153 L] (one required)
FTF400560 Single wall strap for 600 lb [227 L] (two required)
FTF400950 Single wall strap for 950 lb [368 L] (two required)
FTF401200 Single wall strap for 1,300 lb [490 L] (two required)
FTF401201 Single floor strap for 1,300 lb [490 L] (two required)
Table 28 – Legacy Parts
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6.5.1 Legacy Manual Actuator FTF700010
Manual actuation of the system can be accomplished using this component. The Manual Actuator features a
push-button that moves the internal pin downward, thereby depressing the Actuation Adapter valve core and
releasing pressure from the cylinder valve. This allows the piston to slide upward and commence system discharge.
The Manual Actuator mounts to the threads on the Actuation Adapter, located on the Top Plug of the cylinder valve.
CAUTION:
Do not remove the safety pin until ready to actuate system discharge.
NOTE: Use of the Manual Actuator requires a cylinder valve equipped with a Top Plug
Actuation Adapter and is not intended to be mounted on to the linear actuator. Using
this device would not allow for an electrical releasing mechanism on the system.
Installation is performed at the factory before filling and pressurizing the system.
Figure 38 – Legacy Manual Actuator FTF700010
6.5.2 Legacy Electric Solenoids FTF500011, FTF500023 & FTF501223
The Electric Solenoid is permanently fixed to the cylinder valve body. It is factory installed in the side port of the
cylinder valve or the top port of the 4 in [100mm] cylinder valve. (See Figures 40 & 41) The Electric Solenoid valve is
normally closed, and the valve requires electrical energy to remain open. The Electric Solenoid valves are available
in 12 VDC and 24 VDC configurations.
Cylinder valves equipped with the Electric Solenoid must be actuated from a UL Listed control panel for releasing
device service that is compatible with Firetrace equipment. Prior to the installation of the Electric Solenoid to the
actuation circuit, confirm the electrical ratings of the solenoid are compatible with the electrical ratings of the
actuation circuit.
Wiring of the Electric Solenoid to the actuation circuit
shall comply with NFPA requirements. The solenoid valve
circuit must be supervised for a break in the wiring,
and/or a ground in accordance with the control unit
provided for the extinguishing system.
The threaded nut provided for the securement of the
enclosure for the coil to the valve body for the Electric
Solenoid shall be mechanically secured against removal.
They shall not be disassembled or removed during
servicing and/or maintenance of the system.
Figure 39 – Legacy Electric Solenoid
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WARNING:
The solenoid valve shall not be removed from the cylinder valve. In case of malfunction, please contact an
authorized Firetrace distributor.
CAUTION:
Do not electrically activate the Electric Solenoid at any time unless the discharge valve outlet has the Anti-Recoil
Device installed or the discharge piping is installed.
WARNING:
Electrically operated releasing devices that are not supervised, are not to be removed during the installation and
servicing of the system.
Figure 40 – Legacy Electric Solenoid on Side Port
Figure 41 – Legacy Electric Solenoid on Top Port
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Appendix A – Flow Calculation Example
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Appendix B – Liquid Level Indicator Charts
Figure 42- 150 lb. [62 L] LLI Chart
0
1.25
2.5
3.75
5
6.25
7.5
8.75
10
11.25
12.5
13.75
15
16.25
17.5
18.75
20
0 25 50 75 100 125 150 175Liquid Level Indicator Reading, [in]Fill Weight, [lbs]
32 °F [0 °C]
61
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Figure 43- 250 (103L) LLI Chart
0
1.25
2.5
3.75
5
6.25
7.5
8.75
10
11.25
12.5
13.75
15
16.25
17.5
18.75
20
0 50 100 150 200 250 300Liquid Level Indicator Reading, [in]Fill Weight, [lbs]
32 °F [0 °C]
70 °F [21 °C]
130 °F [54.4 °C]
62
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Figure 44- 375 (153L) LLI Chart
0
1.25
2.5
3.75
5
6.25
7.5
8.75
10
11.25
12.5
13.75
15
16.25
17.5
18.75
20
21.25
22.5
23.75
25
26.25
27.5
28.75
30
31.25
32.5
0 50 100 150 200 250 300 350 400Liquid Level Indicator Reading, [in]Fill Weight, [lbs]
32 °F [0 °C]
70 °F [21 °C]
130 °F [54.4 °C]
63
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Figure 45- 560 lb. (227) LLI Chart
0
1.25
2.5
3.75
5
6.25
7.5
8.75
10
11.25
12.5
13.75
15
16.25
17.5
18.75
20
21.25
22.5
23.75
25
26.25
27.5
28.75
30
31.25
32.5
0 100 200 300 400 500 600Liquid Level Indicator Reading, [in]Fill Weight, [lbs]
32 °F [0 °C]
64
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Figure 46- 900 lb. (369) LLI Chart
0
1.25
2.5
3.75
5
6.25
7.5
8.75
10
11.25
12.5
13.75
15
16.25
17.5
18.75
20
21.25
22.5
23.75
25
26.25
27.5
28.75
30
31.25
32.5
33.75
35
0 125 250 375 500 625 750 875 1000Liquid Level Indicator Reading, [in]Fill Weight, [lbs]
32 °F [0 °C]
70 °F [21 °C]
130 °F [54.4 °C]
65
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Figure 47 – 1,200 lb. [490 L] LLI Chart
0
1.25
2.5
3.75
5
6.25
7.5
8.75
10
11.25
12.5
13.75
15
16.25
17.5
18.75
20
21.25
22.5
23.75
25
26.25
27.5
28.75
30
0 250 500 750 1000 1250Liquid Level Indicator Reading, [in]Fill Weight, [lbs]
32 °F [0 °C]
70 °F [21
°C]
66
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Appendix C – SDS
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