Kidde IG-55 User manual

P/N 06-237619-001
April 2020, Rev. AA
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This document contains technical
data subject to the EAR
Inert Gas Engineered
Fire Suppression System
Design, Installation, Operation, and
Maintenance Manual with FM Approval

06-237619-001 i April 2020
FOREWORD
This manual is written for those who design, install, operate, or maintain the Kidde Fire Systems Inert Gas
Engineered Fire Suppression System (Kidde®IGS) using IG-55 or IG-100 (herein refer to collectively as
the “Agent”) manufactured after June 2018. For Kidde®Argonite®Engineered Fire Systems manufactured
prior to July 2018, see DIOM P/N: 06-236432-001. For Kidde Nitrogen Engineered Fire Systems
manufactured prior to July 2018, see DIOM P/N: 06-237459-001.
IMPORTANT
Kidde Fire Systems assumes no responsibility for the application of any systems other than those addressed
in this manual. The technical data contained herein is limited strictly for information purposes only.
Kidde Fire Systems believes this data to be accurate, but it is published and presented without any
guarantee or warranty whatsoever. Kidde Fire Systems disclaims any liability for any use that may be made
of the data and information contained herein by any and all other parties.
Kidde IGS is to be designed, installed, inspected, maintained, tested and recharged by authorized, trained
personnel in accordance with the following:
• Standard of the National Fire Protection Association No. 2001, Edition 2015 titled Clean Agent Fire
Extinguishing Systems.
• ISO 14520, BS EN 15004 and any other applicable national standards
• All instructions, limitations, cautions, and warnings, contained in this manual, 06-237619-001.
• All information contained on the system container nameplate(s).
Storage, handling, transportation, service, maintenance, recharge, and test of Agent storage containers
shall be performed only by qualified and trained personnel in accordance with the information in this
manual and Compressed Gas Association pamphlets C-1, C-6 and P-1:
• C-1, Methods for Hydrostatic Testing of Compressed Gas Cylinders.
• C-6, Standards for Visual Inspection of Compressed Gas Cylinders.
• P-1, Safe Handling of Compressed Gases In Containers.
CGA pamphlets are published by the Compressed Gas Association: http://www.cganet.com
All personnel should be trained by Kidde Fire Systems and should have attended a Cylinder
Handling/Installation training session provided by Kidde Fire Systems.
For additional reference information refer to:
• National Fire Protection Association (USA): www.nfpa.org
• Fire Industry Association (UK): www.fia.uk.com
The design concentration for Class A and C fires applies to systems designed to meet and comply with
FM5600, and NFPA 2001, Edition 2015 requirements. As such, our customers are reminded and advised:
• In accordance with 4.3.1.2 and 4.3.1.3 of NFPA 2001, Edition 2015, automatic detection and
automatic actuation shall be used. Manual actuation is permitted only if acceptable by the authority
having jurisdiction.
• Designers should also take note of 4.3.5.6 in NFPA 2001, Edition 2015 with regard to discharge
delays.
• The designer should also review A.5.4.2.4 in NFPA 2001, Edition 2015 and confirm that a protected
Class A hazard does not include any Class B materials (flammable or combustible liquids or gases)
which would classify the protected space as a Class B hazard.
• In addition, the designer should refer to section A.5.6 in NFPA 2001, Edition 2015 and confirm that
the protected space does not include electrical equipment that will not be de-energized prior to or at
the time of Agent discharge. Such energized electrical equipment has the potential to act as a
persistent re-ignition source. If electrical equipment cannot be de-energized, the design Agent
concentration shall be at least that required by 5.4.2.5 in NFPA 2001, Edition 2015. In some cases
consideration should be given to the use of extended Agent discharge or higher design Agent
concentration. When exploring these options, keep in mind the possibility of the formation of
combustion and decomposition products. Please contact applications engineering for design guidance
in such instances.

April 2020 ii 06-237619-001
Questions concerning the information presented in this manual should be addressed to:
SAFETY DATA SHEETS
The Safety Data Sheets (SDS) can be found in Appendix A. The latest version of the SDS can also be found
online at the Kidde Fire Systems website (www.kiddefiresystems.com). Use the built-in navigation links to
view the desired sheet.
SAFETY SUMMARY
Kidde IGS uses pressurized equipment; therefore, personnel responsible for fire suppression systems must
be aware of the dangers associated with the improper handling, installation or maintenance of this
equipment.
Fire suppression system service personnel must be trained in the proper handling, installation and service
of Kidde IGS equipment and follow the instructions used in this manual and in the Safety Bulletin and
cylinder nameplate.
Kidde has provided warnings and cautions at appropriate locations throughout the text of this manual.
These warnings and cautions are to be adhered to at all times. Failure to do so may result in serious injury
to personnel.
DEFINITIONS
Kidde Fire Systems
400 Main Street
Ashland, MA 01721
Phone: [phone]
Fax: [phone]
www.kiddefiresystems.com
Email: [email protected]
WARNING
Indicates an imminently hazardous situation which, if not avoided, could result in death,
serious bodily injury and/or property damage.
CAUTION
Indicates a potentiality hazardous situation which, if not avoided, could result in
property or equipment damage.

06-237619-001 iii April 2020
SAFE CYLINDER HANDLING PROCEDURES
Before handling Kidde IGS products, all personnel must be trained in the safe handling of the containers
as well as in the proper procedures for installation, removal, filling, and connection of other critical devices,
such as flex hoses; actuation devices; pressure monitoring devices; transportation safety caps, guards, or
shrouds; and anti-recoil devices.
READ, UNDERSTAND and ALWAYS FOLLOW the design, installation, operation and maintenance manuals,
owners manuals, service manuals, etc., that are provided with the individual systems.
The following safety procedures must be observed at all times:
TRANSPORTING CONTAINER
Containers must be shipped securely either upright in steel stillages or horizontally on pallets using a
minimum of 3 bands to secure the container/s to the pallet.
On site, containers must not be rolled, dragged, or slid, nor allowed to be slid from tailgates of vehicles. A
suitable hand truck, fork truck, single cylinder trolley, roll platform, or similar device must be used.
ROUGH HANDLING
Containers must not be dropped or permitted to strike violently against each other or other surfaces.
STORAGE
Containers must be stored standing upright where they are not likely to be knocked over and the containers
must be secured.
For additional information on safe handling of compressed gas cylinders, see CGA Pamphlet PI titled
“Standard for Safe Handling of Compressed Gases in Containers”. CGA pamphlets may be purchased from
The Compressed Gas Association: http://www.cganet.com
ANTI-RECOIL SAFETY CAP
• Each Agent cylinder is factory equipped with an anti-recoil safety cap installed on the valve discharge
outlet, and securely fixed to the valve via a stainless steel, PVC coated cable to prevent loss. This
device is a safety feature, and will prevent discharge when installed if the cylinder is actuated
accidentally.
• The anti-recoil safety cap must be installed on the valve outlet AT ALL TIMES except when the
cylinders are connected into the system piping.
WARNING
Any area in which inert gas agent is used or stored must be properly ventilated.
A person working in an area where air has become enriched with agent can
become unconscious without sensing the lack of oxygen. Remove the victim to
fresh air. Administer artificial respiration if necessary and summon a physician.
Never dispose of liquefied agent in an indoor work or storage area.
WARNING
Pressurized (charged) cylinders are capable of violent discharge and, as such, are
extremely hazardous. Pressurized cylinders must be handled safely to avoid accidents
that could cause bodily injury, death, or property damage.
WARNING
The instructions contained in this foreword and throughout the manual must be
followed in the exact sequence as written to prevent serious injury, death, or
property damage.

April 2020 iv 06-237619-001
SAFETY TRANSPORTATION CAP, GUARD, OR SHROUD
The Safety Transportation cap, guard, or shroud is factory installed on the cylinder. The safety
transportation cap, guard, or shroud covers the cylinder valve to protect it during transportation and
handling. No attachments (release unit or slave gauge assemblies) are to be connected to the cylinder
valve during shipment, storage, or handling.
INSTALLATION
THIS SEQUENCE FOR CYLINDER INSTALLATION MUST BE FOLLOWED AT ALL TIMES:
1. Install cylinder into bracketing.
2. Remove the Transport cap.
3. Remove the anti-recoil safety cap and connect all cylinder valves into system piping using
appropriately sized discharge hose.
4. Install all pilot hoses, Pilot Line Bleed Valves etc. leaving the release unit available for installation by
the commissioning engineer only.
REMOVAL FROM SERVICE
THIS SEQUENCE FOR CYLINDER REMOVAL MUST BE FOLLOWED AT ALL TIMES:
1. Remove all release units, slave cylinder pressure gauge units, and pilot lines from cylinder valve.
2. Disconnect discharge hose at the valve outlet.
3. Immediately install anti-recoil safety cap on valve outlet.
4. Attach the transport cap to the cylinder/valve assembly.
5. Remove cylinder from bracketing.
WARNING
In order to prevent injury in the event of accidental cylinder discharge, the discharge
hose must be connected to the system piping before attaching to the cylinder valve
outlet.
WARNING
The safety pin for the manual release must be fully inserted and secured using anti-
tamper seal before attempting to fit the release unit to the valve actuation port
WARNING
The cylinder valve anti-recoil safety cap must be immediately available for installation
on the cylinder valve outlet before disconnecting the cylinder discharge hose from
system piping. If the safety cap is missing obtain a new safety cap from Kidde Fire
Systems.
WARNING
Failure to follow all instructions in this manual on the use and handling of system
components could result in serious bodily injury, death, and property damage in the
event of inadvertent and unexpected cylinder discharge.

06-237619-001 v April 2020
Foreword ....................................................................................................... i
Safety Summary............................................................................................. ii
Safe Cylinder Handling Procedures .................................................................... iii
Table of Contents............................................................................................ v
List of Figures ................................................................................................ xiii
List of Tables.................................................................................................. xvii
CHAPTER 1 GENERAL INFORMATION
1-1 Introduction ........................................................................................ 1-1
1-1.1 Use .................................................................................................... 1-1
1-1.2 Unsuitable Risks .................................................................................. 1-2
1-1.3 Fire Class Table ................................................................................... 1-2
1-1.4 Agent Cylinder Quantity ........................................................................ 1-2
1-2 Fire Extinguishment Methods ................................................................. 1-3
1-3 Safety ................................................................................................ 1-3
1-3.1 Personal Safety ................................................................................... 1-3
1-3.2 Agent Safety Concentrations ................................................................. 1-4
1-3.2.1 Oxygen Concentration Above or Below Sea Level ..................................... 1-5
1-4 System Description .............................................................................. 1-6
1-4.1 Central Cylinder Bank ........................................................................... 1-6
1-4.2 Selector Valve System .......................................................................... 1-7
1-4.3 Release Time....................................................................................... 1-7
1-4.4 Pressure Monitoring.............................................................................. 1-7
1-4.5 Placement Supervision.......................................................................... 1-7
1-5 Extinguishing Agent....................................................................... 1-8
1-5.1 Design Concentration Safety Factor ........................................................1-8
1-5.2 IG-100 (Nitrogen) ................................................................................ 1-9
1-5.3 IG-55 (Nitrogen and Argon) .................................................................. 1-11
1-5.3.1 Purity of Argon and Nitrogen ................................................................. 1-11
1-5.4 Agent Pressure verse Temperature Formulas ........................................... 1-14
1-5.5 Operating Temperature Range Limitations ............................................... 1-14
1-5.6 Agent Storage Container Temperature Range Limitations.......................... 1-14
1-5.6.1 Balanced System Agent Storage Container Temperature Range.................. 1-14
1-5.6.2 Unbalanced System Agent Storage Container Temperature Range.............. 1-14
1-5.6.3 Storage .............................................................................................. 1-14
1-6 Noise Consideration.............................................................................. 1-15
1-7 System Detection and Control................................................................ 1-15
1-8 Release Modes..................................................................................... 1-16
1-8.1 Automatic Release ............................................................................... 1-16
1-8.2 Manual Remote Release ........................................................................ 1-16
1-8.3 Manual Emergency Release ................................................................... 1-16
1-9 Flow Calculations ................................................................................. 1-16
1-10 Pressure Relief/Vent ............................................................................. 1-17
1-11 Service and Maintenance ...................................................................... 1-17
1-12 Retrofitability ...................................................................................... 1-17
1-13 References.......................................................................................... 1-18
1-14 Approvals ........................................................................................... 1-18
TABLE OF CONTENTS

April 2020 vi 06-237619-001
TABLE OF CONTENTS (CONT.)
CHAPTER 2 COMPONENT DESCRIPTIONS
2-1 Introduction ........................................................................................ 2-1
2-2 Functional Description .......................................................................... 2-1
2-3 Kidde IGS Agent Cylinders and Release Units........................................... 2-2
2-3.1 Cylinder and Valve Assemblies............................................................... 2-2
2-3.1.1 Spare Parts for Cylinders ...................................................................... 2-3
2-3.2 Cylinder Valves.................................................................................... 2-4
2-3.3 Release Units ...................................................................................... 2-5
2-3.4 Slave Cylinder Gauge Assemblies ........................................................... 2-6
2-3.5 Actuation Hoses................................................................................... 2-7
2-3.6 Pilot Line Bleed Valve ........................................................................... 2-8
2-3.7 Quick Connect Cables ........................................................................... 2-9
2-4 Discharge Accessories .......................................................................... 2-10
2-4.1 Discharge Hoses .................................................................................. 2-10
2-4.2 Manifold Safety Device ......................................................................... 2-11
2-4.3 Manifold Pressure Gauge....................................................................... 2-11
2-4.4 Discharge Indicator (Optional) ............................................................... 2-12
2-4.5 3/4” Manifold Check Valves ................................................................... 2-12
2-4.6 Pressure Operated Switches .................................................................. 2-13
2-4.7 Pressure Operated Trip ......................................................................... 2-14
2-4.8 Main to Reserve Transfer Switch ............................................................ 2-15
2-4.9 Odorizer Assembly ............................................................................... 2-16
2-4.10 Main and Reserve Nameplates ............................................................... 2-17
2-4.11 Caution Signs ...................................................................................... 2-17
2-5 Selector Valves.................................................................................... 2-18
2-5.1 Back-Plate Manifold.............................................................................. 2-19
2-5.1.1 Pressure Regulator............................................................................... 2-19
2-5.1.2 Back-Plate Manifold Hose ...................................................................... 2-20
2-5.1.3 Back-Plate Manifold Spare Solenoids....................................................... 2-20
2-6 Lockout Valves .................................................................................... 2-21
2-7 Discharge Nozzles ................................................................................ 2-23
2-8 Nitrogen Pilot System and Pressure Driven Accessories ............................. 2-24
2-8.1 Nitrogen Discharge Delay Kits, P/N 38-401140-030
and P/N 38-401140-060 ....................................................................... 2-24
2-8.2 Pressure Operated Siren ....................................................................... 2-25
2-8.3 Nitrogen Pilot Cylinders......................................................................... 2-26
2-8.3.1 108 cu. in. Nitrogen Pilot Cylinder .......................................................... 2-26
2-8.3.1.1 5/16” Flare x 1/8” NPT Male Connector ................................................... 2-26
2-8.3.1.2 108 cu. in. Nitrogen Pilot Cylinder Mounting Bracket, ................................ 2-26
2-8.3.1.3 30” Actuation Hose .............................................................................. 2-26
2-8.3.2 1040 cu. in. Nitrogen Pilot Cylinder ........................................................ 2-27
2-8.3.2.1 1040 cu. in. Nitrogen Pilot Cylinder Strap ................................................ 2-27
2-8.3.2.2 3/4 in. Nitrogen Discharge Hose............................................................. 2-27
2-8.3.2.3 Plain-nut Discharge Head ...................................................................... 2-28
2-8.4 Electric Control Heads Kit, P/N 85-890181-000 ........................................ 2-29
2-8.4.1 Lever Operated Control Head (P/N WK-870652-000) ................................ 2-30
2-8.4.1.1 Lever/Pressure Operated Control Head, P/N 82-878751-000...................... 2-31

06-237619-001 vii April 2020
TABLE OF CONTENTS (CONT.)
2-8.4.2 Control Head Monitor with Hazloc Assembly,
P/N 85-100000-100 ............................................................................. 2-32
2-8.4.2.1 Standards for US Hazloc Approval .......................................................... 2-33
2-8.4.2.2 Standards for Canadian Hazloc Approval ................................................. 2-33
2-9 Fill Adapter ......................................................................................... 2-34
2-10 Manifold Equipment.............................................................................. 2-35
2-10.1 Manifold Bracket .................................................................................. 2-36
2-10.2 Manifold Clamp.................................................................................... 2-36
2-10.3 2" Adapter, BSPT (F) to NPT (F) .............................................................2-36
2-11 Racking Components ............................................................................ 2-37
2-11.1 Unistrut®Wall Rail ............................................................................... 2-37
2-11.2 Front Clamping Bar .............................................................................. 2-38
2-11.3 Rear Wooden Spacer ............................................................................ 2-38
2-11.4 Center Wooden Spacer ......................................................................... 2-39
2-11.5 Single Cylinder Clamping Bracket ........................................................... 2-39
2-11.6 Clamping Bolt...................................................................................... 2-40
2-11.7 Endcover ............................................................................................ 2-40
2-11.8 Distance Pipe ...................................................................................... 2-41
CHAPTER 3 SYSTEM DESIGN
3-1 Introduction ........................................................................................ 3-1
3-2 Evaluation of Risk/Hazard ..................................................................... 3-1
3-2.1 Requirements for a Cylinder Storage Room.............................................. 3-3
3-2.2 Extended Discharge ............................................................................. 3-3
3-3 Extinguishing Values ............................................................................ 3-4
3-4 Discharge Time.................................................................................... 3-4
3-5 Minimum Design Concentrations (MDC’s) ................................................ 3-4
3-6 IG-55 Total Flooding Concentration Factor Tables ..................................... 3-5
3-7 IG-100 Total Flooding Concentration Factor Tables ................................... 3-7
3-8 Design Factors..................................................................................... 3-9
3-8.1 Electrical Clearance .............................................................................. 3-9
3-8.2 Hold Time ........................................................................................... 3-10
3-8.3 Temperature Considerations .................................................................. 3-10
3-8.4 Flow Calculation................................................................................... 3-10
3-8.4.1 Required Input Information ................................................................... 3-10
3-8.4.2 Program Outputs ................................................................................. 3-11
3-8.5 Calculation of Room Volume .................................................................. 3-11
3-8.6 Calculation of the Quantity of Extinguishant............................................. 3-11
3-8.7 Ventilation Considerations ..................................................................... 3-11
3-8.8 Atmospheric Correction Factors.............................................................. 3-12
3-9 Cylinder Content .................................................................................. 3-13
3-10 Cylinder Bank Installation ..................................................................... 3-14
3-10.1 Location ............................................................................................. 3-14
3-10.2 Typical Foot Print ................................................................................. 3-14
3-11 Typical Floor Load ................................................................................ 3-15
3-12 Vibrations ........................................................................................... 3-15
3-13 Agent Cylinder Release Constraints ........................................................ 3-15
3-14 Selector Valves.................................................................................... 3-16

April 2020 viii 06-237619-001
TABLE OF CONTENTS (CONT.)
3-14.1 Back-Plate Manifold for Selector Valves................................................... 3-17
3-15 Selecting Number of Nozzles ................................................................. 3-17
3-15.1 Nozzle Coverage .................................................................................. 3-18
3-15.2 Nozzle Selection and Placement ............................................................. 3-18
3-15.2.1 Nozzle Placement................................................................................. 3-19
3-15.3 Tee Split Limitations............................................................................. 3-20
3-15.4 Pipe Sizing .......................................................................................... 3-21
3-15.5 Temperature Limitations ....................................................................... 3-21
3-15.5.1 Operating/Storage Temperature Range................................................... 3-21
3-15.5.2 Storage Temperature ........................................................................... 3-21
3-15.6 Cylinder Actuation Limitations................................................................ 3-21
3-15.7 Pressure Actuation Limitations ............................................................... 3-22
3-15.7.1 Pressure Trip Limitations....................................................................... 3-22
3-15.7.2 Pressure Operated Sirens...................................................................... 3-22
CHAPTER 4 INSTALLATION
4-1 General Equipment Installation .............................................................. 4-1
4-1.1 Personal Safety ................................................................................... 4-1
4-1.2 General Installation Requirements.......................................................... 4-1
4-1.3 Electrical Clearance .............................................................................. 4-1
4-2 Installation Process .............................................................................. 4-2
4-3 Technical Description............................................................................ 4-2
4-4 Functional Description .......................................................................... 4-2
4-4.1 System Overview................................................................................. 4-3
4-4.2 Selector Valve System.......................................................................... 4-4
4-4.3 Systems Using Discharge Delays............................................................ 4-6
4-5 Cylinder Bank Installation ..................................................................... 4-7
4-5.1 Typical Floor Load ................................................................................ 4-7
4-5.2 Racking Install Diagrams ...................................................................... 4-8
4-5.2.1 Clamp Racking Layouts......................................................................... 4-8
4-5.2.2 2 Row Wooden Racking Layouts............................................................. 4-9
4-5.2.3 Distance Pipe Installation ...................................................................... 4-10
4-5.2.4 Cylinder and Valve Installation Diagrams ................................................ 4-11
4-6 Cylinder Bank Assembly........................................................................ 4-12
4-6.1 Securing Manifold ................................................................................ 4-12
4-6.2 Manifold Safety Device ......................................................................... 4-13
4-6.3 Install Discharge Hoses to Manifold Check Valves ..................................... 4-14
4-6.4 Securing Single-Row Cylinders............................................................... 4-14
4-6.5 Securing Multi-Row Cylinders ................................................................ 4-14
4-6.6 Positioning Cylinders ............................................................................ 4-15
4-6.6.1 Installing Back-Plate Manifold for Selector Valve Systems.......................... 4-16
4-6.7 Installing Release Units......................................................................... 4-17
4-6.7.1 Aligning the Release Unit after Pressurization........................................... 4-18
4-6.8 Installing Slave Cylinder Gauge Assembly ............................................... 4-19
4-6.9 Locations for Leak Testing the Valve and Cylinder .................................... 4-20
4-6.10 Locations for Leak Testing the Release Unit ............................................. 4-20
4-6.11 Venting Pressure from the Manifold Burst Discs........................................ 4-21
4-7 Installation of Hoses............................................................................. 4-22
4-8 Distribution Pipe & Fittings .................................................................... 4-23