Kidde co2 product manual 050128

High Pressure
Carbon Dioxide
PRODUCT MANUAL
Contents:
1. Specification
2. Data sheets
3. Design manual
4. Installation, commissioning & maintenance manual
5. Software manual
6. Weight monitoring system
7. Direct Acting Solenoid
8. Owners Manual
9. Approvals
10. Information bulletins

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High Pressure
Carbon Dioxide
Fire Protection Equipment
SPECIFICATIONSFOR
KIDDE CARBON DIOXIDE
FIRE SUPPRESSION
December 2004

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PROPRIETARY RIGHTS NOTICE
This document and the information that it contains are the property of Kidde Fire Protection. Rights to
duplicate or otherwise copy this document and rights to disclose the document and the information that
it contains to others and the right to use the information contained therein may be acquired only by written
permission signed by a duly authorised officer of Kidde Fire Protection.
© Copyright Kidde Fire Protection Services Ltd

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SPECIFICATION FOR KIDDE CARBON DIOXIDE FIRE SUPPRESSION
1.0 General Description
1.1 This specification defines the requirements for a Kidde carbon dioxide fire suppression system. It
shall be used as a standard for equipment, installation and acceptance testing.
2.0 Plans and Specifications
2.1 The carbon dioxide system(s) shall be manufactured by Kidde Fire Protection, Thame Park Road,
Thame, Oxfordshire. OX9 3RT. UK
Major components of the detection and extinguishing control system, valves, cylinders, releasing
devices and nozzles shall be supplied by one manufacturer.
2.2 Major components of the carbon dioxide hardware shall be Factory Mutual approved.
2.3 To ensure system effectiveness, the contractor shall design, install and test the equipment in
accordance with either NFPA 12 or BS 5306, pt 4.
2.4 In addition to this specification, drawings shall be provided showing the general arrangement of
equipment within the protected areas. The contractor shall also provide a hazard analysis of the
individual risk areas.
3.0 Standards, Approvals and Quality Assurance
3.1 The carbon dioxide system shall be designed, installed and tested in accordance with BS 5306
pt4 or NFPA 12, as defined by the client or their insurers. All equipment shall be procured from a
single manufacturer operating a quality scheme to : BS EN ISO 9001:2000.
4.0 Proposals and Submittals
4.1 The contractor shall supply manufacturers sales literature, data sheets and technical information
for each major component of the system.
4.2 The contractor shall submit the following with their proposal:
4.2.1 Evidence of their qualifications (e.g. LPS 1204) to design, install, test, service and recharge
the manufacturers equipment AS APPROVED BY Kidde.
4.2.2 A complete bill of materials and description of the proposed installation including the
manufacturers part number for each major item of equipment.
4.2.3 Evidence of their ability to supply spare parts to maintain the system.
4.3 Upon award of a contract the contractor shall supply the following:
4.3.1 Detailed scaled plans/drawings of the proposed system showing all items of equipment,
routing of all pipes and cables. Flow calculations shall be shown detailing pipe size, nozzle size
flow rate and terminal pressure.

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This information shall be generated by a suitable software package from the equipment
manufacturer.
Care should be taken in locating the extinguishing agent containers as close as possible to the
hazard to minimise the time for the agent to reach the fire.
4.3.2 Electrical system schematics in accordance with the relevant standard showing safety
interlocks and a description of the sequence of operation.
4.3.3 Full sets of drawings and technical submittals, as required, shall be submitted to the client
and the consultant for approval prior to installation.
5.0 General Requirements
5.1 The carbon dioxide system shall be designed, engineered and installed for the proper protection of
the hazard area(s). All major components shall be supplied by Kidde Fire Protection.
5.2 The design, installation and testing shall be in accordance with: BS5306 pt 4, NFPA 12 or Factory
Mutual standards as appropriate.
In addition, the detection and alarm system shall be designed and installed to the appropriate
standard.
5.3 All major components shall be from one major manufacturer and the carbon dioxide components
shall be Factory Mutual approved.
5.4 Release of the carbon dioxide system shall be possible by electrical solenoid attached to a system
control head operating together to release a pilot nitrogen supply.
The nitrogen pilot gas shall be capable of operating up to 36 Klem valve actuators.
The control head shall also have facilities for manual release locally and remotely by mechanical
pull cable. As an option the control head shall have integral switches to indicate :
Operated - Control head fired.
Isolated - Control head isolating pin inserted.
5.5 The system discharge time shall be designed in accordance with the design code selected for the
project. Particular attention shall be given to determining the classification of the hazard and
protection method employed.
5.6 The carbon dioxide storage cylinders and valves shall be “π“marked in accordance with European
TPED Legislation 99/36/EC. Each cylinder shall be fitted with a Kidde Klem servo assisted valve.
The valves shall be fitted with a safety burst disc designed to operate at 190 bar. The cylinder
shall be painted red. The cylinder assembly shall be Factory Mutual approved.
5.7 Where multiple cylinders are required for one or more hazard areas a common manifold shall be
used. To prevent appreciable loss of gas, in the case of a cylinder being removed and the system
discharging, an approved check valve shall be fitted to prevent loss of gas. Each cylinder
supplying a common manifold shall be of a common size and fill.
5.8 Where more than one risk is protected from a bank of cylinders, consideration shall be given to
supplying a reserve supply of gas suitable to protect the largest risk.
The reserve bank shall be connected to the same manifold as the primary set using Factory

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Mutual approved check valves.
5.9 System piping shall be in accordance with the requirements of BS 5306 pt 4 (NFPA 12, if
applicable).
5.10 Discharge nozzles shall be selected from the range of Kidde Fire Protection Factory Mutual
Approved designs and shall be suitably sized for the flow rates required.
5.11 System design shall be verified using the Kidde Fire Protection CO2 calculation program. A full
print out shall be submitted for approval.
6.0 System Components
6.1 Cylinders - shall be, filled with 45 kg of carbon dioxide and fitted with the Kidde Klem valve. The
assembly shall be Factory Mutual approved. Valves shall be both proof tested and leak tested as
part of the manufacturing process.
6.2 Valve actuator (K62341) - this is the valve operating device and is attached to the valve by a 'U'
shaped securing pin. The actuators can be removed for system testing without operating the
cylinder valve with the associated risks of losing gas. The actuator is operated by pilot gas
pressure or manually by a lever. The actuator shall be FM (Factory Mutual) approved.
6.3 Copper loop K21578 - provides a solid connection between the Klem valve and manifold check
valve. The copper loop shall be Factory Mutual approved.
6.4 Flexible loop K97112 - an alternative flexible connection between the Klem valve and manifold
check valve.
6.5 Pilot loops K93433 and K93434 - high pressure flexible tube used to connect between the pilot
gas supply and cylinder valve actuators. Pilot loops shall be tested to 210 bar (3000 PSI).
6.6 Pilot vent K24051 - this device is a safety feature designed to slowly relieve pilot gas pressure
following the main CO2 discharge.
6.7 Manifolds - shall be manufactured from schedule 80 pipe , galvanised and tested to 120 bar (2000
PSI). Manifolds shall be FM approved and available in the following sizes for 2,3,4,5 cylinder(s) 1"
nominal bore or 1¼" nominal bore schedule 80 pipe.
6.8 Cylinder racking - shall be formed from steel components designed specifically for supporting CO2
cylinders during a discharge. Where double rows of cylinders are used a wooden central spacer
shall be used. Racking shall be supplied in modules of 2 or 3 cylinder sets. Two sets of racking
shall be used for each bank of cylinders.
6.9 Control heads K62303 and 62304 - provide the electro/mechanical interface between the
detection control panel and CO2 extinguishing hardware. The control head together with the pilot
cylinder K62462, solenoid K62422B and wall mount K62487, forms the system actuator and
provides the pilot gas supply to operate the main cylinder bank. Operation of the control head may
be achieved electrically, pneumatically or mechanically by remote pull cable.
6.10 Push to fire button K62412 - provides direct manual control to fire the CO2 cylinder bank from the
systems actuator.
6.11 Safety pin K62401 - this fits into the control head to reset the device following operation. It also
provides an isolation facility when left in position. Remote indication of the isolated condition is
available via contacts within the control head.
A blanking plug shall be used to prevent ingress of dirt into the control head when the safety pin is
not in situ.

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6.12 Manual release interface K62478 - allows remote release of the control head by means of a pull
box K1114 and phosphor bronze pre - stretched cable K9002 . To allow easy change of direction
corner pulleys K1122 shall be used. The cable shall be run in ½" o.d. galvanised conduit for
mechanical protection.
6.13 Pressure operated direction valves K24175 - (typical) - This is a 1¼" nominal bore valve and shall
be used to control the flow of carbon dioxide to the specific hazard in a system designed to protect
multiple risks from a common bank of cylinders. The valve shall be capable of opening under full
CO2 pressure. A manual lever shall be supplied for emergency control.
The valve shall be Factory Mutual approved. A switch shall be fitted to the valve where indication
that the valve is open is required (e.g. K24630).
(P.O.D. valves may be provided in sizes: ¾", 1", 1¼", 1½", 2", 3", and 4").
6.14 Safety outlet K 921 - shall be used where gas may be trapped between two closed valves to
prevent a dangerous rupture of the pipework e.g. when directional valves or isolating valves are
used.
6.15 Pressure switch K60218 - shall be used to provide electrical contacts rated at 10amp. To provide
the following facilities:
• Plant shut down
• Remote alarm signalling
• Discharged indication
• Gas in manifold - should direction valve not open.
(The switch shall be Factory Mutual approved).
6.16 Pressure trip K17554 - shall be used to automatically release weight operated dampers, fuel
valves etc upon CO2 discharge. The pressure trip shall be Factory Mutual approved.
6.17 CO2 siren K18307 - shall be used to give audible warning of impending CO2 discharge prior to the
main direction valve opening.
6.18 CO2 discharge delay K23650/30 - shall be used in conjunction with the siren to give a 30 second
pre-alarm to allow safe evacuation of a CO2 protected space. The discharge delay shall be
Factory Mutual approved.
6.19 Time delay by-pass K60736 - shall allow emergency manual control of the CO2 discharge, by-
passing the 30 second delay.
6.20 Odouriser assembly K62586 - shall be used to introduce a pungent lemon smell into a protected
hazard area upon operation of the CO2 extinguishing system. It shall be used in conjunction with a
check valve K22152.
6.21 Continuous weight monitoring unit E8731-402 shall be used to monitor the CO2 cylinders for
weight loss. Should a cylinder lose 5% - 10 % of its weight then this device shall automatically
signal a fault condition to the system control panel via a micro switch.
7.0 System Design
7.1 For total flooding applications care shall be taken to ensure that the room is reasonably gas tight
with all ventilation shut down. Failing this, adequate provision shall be made for leakage
compensation in accordance with the design standard.

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7.2 All doors or windows which may be open shall be arranged to close automatically upon CO2
discharge to prevent undue loss of gas.
7.3 The carbon dioxide system design shall be based upon accurate drawings of the hazard or in the
absence of drawings a detailed site survey. The hazard analysis shall define the design
concentration used and temperature applicable.
7.4 Warning signs shall be fitted to all appropriate doors into the hazard area and any areas where
CO2 may build up and form a hazardous concentration.
7.5 All equipment shall be installed to the manufacturer's manuals and due consideration for service
and maintenance of the system shall be given.
7.6 The system shall meet the requirements of either BS5306 pt 4 or NFPA 12 as determined by the
client/consultant or their insurers.
8.0 Equipment Manufacturer
The system components, design manuals and flow calculation programme shall be provided by:
Kidde Fire Protection, Thame Park Road, Thame, Oxfordshire, OX9 3RT. UK

High Pressure
Carbon Dioxide
CO2 DATA SHEETS

CO2 DATA SHEETS
CO2 Nozzle ........................................................................................................ 418A
Check valve assy ..................................................................................................426
Pressure trip, typical installation...................................................................811-5000
45kg cylinder & klem valve assy...................................................................811-9004
6.8kg cylinder & klem valve assy.......................................................... 811-9004(6.8)
22.7kg cylinder & klem valve assy...................................................... 811-9004(22.7)
¾” Safety Outlet ...........................................................................................811-9016
Multi-container racking .................................................................................811-9020
1” (25mm) bore, cylinder check, valve manifold ...........................................811-9022
11/4” (32mm) bore, cylinder check, valve manifold ......................................811-9023
Flexible loop .................................................................................................811-9026
Valve actuator (pneumatic/manual)..............................................................811 9031
Lever actuator link........................................................................................811-9032
Cable clamp assy.........................................................................................811-9033
Klem valve....................................................................................................811-9038
Pilot loops.....................................................................................................811-9040
Pilot bleed.................................................................................................. 811-9040A
¾” P.O.D. valve............................................................................................811-9067
¾” P.O.D. valve c/w indicator switch ............................................................811-9068
1” P.O.D. valves ...........................................................................................811-9071
1” P.O.D. valve c/w indicator switch .............................................................811-9072
11/4” P.O.D. valve........................................................................................811-9075
11/4” P.O.D. valve c/w indicator switch ........................................................811-9076
11/2”” P.O.D. ................................................................................................811-9079
11/2” P.O.D. valve c/w indicator switch ........................................................811-9080
2” P.O.D. ......................................................................................................811-9083
2” P.O.D. valve c/w indicator switch .............................................................811-9084
3”, 4” & 6” P.O.D. valves ..............................................................................811-9090
CO2 Discharge delay unit .............................................................................811-9112
Universal pressure switch assy ....................................................................811-9119

Pressure Trip................................................................................................811-9123
Nozzle, CO2, flanged horn............................................................................811-9139
Nozzle, CO2, with horn .................................................................................811-9148
Nozzle, CO2, & duct adaptor ........................................................................811-9151
Manual Pull Box assy ...................................................................................811-9220
Manual Pull box instruction plate..................................................................811-9225
CO2 door plate.............................................................................................811-9237
Control head options ....................................................................................823-9250
Electric control head.....................................................................................823-9521
Flameproof solenoid................................................................................. 823-9522/A
Standard solenoid .................................................................................... 823-9522/B
Pneumatic diaphragm ..............................................................................823-9522/C
Safety & Reset pin, Manual release .............................................................823-9523
Pilot valve & cylinder assy......................................................................... 823-9524A
Control head bracket ................................................................................. 823-9524B
Mounting bracket - control head (FM) ....................................................... 823-9524C
Typical arrangement, 3 cylinders..................................................................841-5025
Typical arrangement, including manual pull .................................................841-5027
Pilot tube connections to inlet of P.O.D. valves............................................841-5036

i Manual No 59812-401
High Pressure
Carbon Dioxide
DESIGN MANUAL
Issue 5 December 2004 Manual No 59812-401

ii Manual No 59812-401
duplicate or otherwise copy this document and rights to disclose the document and the information
that it contains to others and the right to use the information contained therein may be acquired only
by written permission signed by a duly authorised officer of Kidde Fire Protection.
© Copyright Kidde Fire Protection Services Ltd

iii Manual No 59812-401
TABLE OF CONTENTS
Chapter Page
INTRODUCTION ..................................................................................................1
1 TOTAL FLOODING SYSTEMS....................................................................2
1.1 EXAMPLES OF HAZARDS..................................................................2
1.2 TYPE OF FIRES ..................................................................................2
1.3 WHERE CO2 IS NOT EFFECTIVE ......................................................2
2 CO2 REQUIREMENTS FOR SURFACE FIRES...........................................3
2.1 BASIC QUANTITY ...............................................................................3
2.2 UNCLOSEABLE OPENINGS...............................................................3
2.2.1 Limits of Uncloseable Openings ................................................3
2.2.2 Compensation ...........................................................................4
2.3 MATERIAL CONVERSION FACTOR ..................................................4
2.4 TEMPERATURE CORRECTION.........................................................6
2.5 FORCED VENTILATION .....................................................................6
2.6 INTERCONNECTED VOLUMES .........................................................7
2.7 VENTING FOR SURFACE FIRE SYSTEMS .......................................7
3 CO2 REQUIREMENTS FOR DEEP SEATED FIRES...................................8
3.1 BASIC QUANTITY ...............................................................................8
3.2 OPENINGS ..........................................................................................8
3.3 FORCED VENTILATION .....................................................................8
3.4 INTERCONNECTED VOLUMES .........................................................8
3.5 EXTENDED DISCHARGE .................................................................10
3.5.1 Venting for Deep Seated Fire Systems ...................................10
4 DISCHARGE RATES FOR TOTAL FLOODING SYSTEMS......................12
4.1 SURFACE FIRES ..............................................................................12
4.2 DEEP SEATED FIRES ......................................................................12
5 NOZZLE DISTRIBUTION...........................................................................13
6 LOCAL APPLICATION SYSTEMS............................................................14
6.1 EXAMPLES OF HAZARDS................................................................14
6.2 GENERAL..........................................................................................14
6.3 CO2 QUANTITIES..............................................................................14
6.3.1 Duration of Discharge..............................................................15
6.3.2 Material Conversion Factor......................................................15
7 RATE BY AREA METHOD ........................................................................16

iv Manual No 59812-401
7.1 CO2 QUANTITY .................................................................................16
7.2 HORN DISPOSITIONS ......................................................................18
8 RATE BY VOLUME METHOD...................................................................20
8.1 ASSUMED ENCLOSURE ..................................................................20
8.2 CO2 QUANTITY .................................................................................20
8.3 HORN DISPOSITIONS ......................................................................21
9 PIPE SELECTION......................................................................................22
9.1 RATE OF APPLICATION...................................................................22
9.2 PIPE SIZE ESTIMATES.....................................................................22
9.3 NOZZLE SIZES..................................................................................23
10 STORAGE CONTAINER LOCATION........................................................24
11 DISTRIBUTION VALVES...........................................................................25
12 AUTOMATIC OPERATION........................................................................26
13 MANUAL CONTROL .................................................................................27
13.1 MANUAL RELEASE...........................................................................27
14 ALARMS ....................................................................................................28
15 ELECTROSTATIC DISCHARGE...............................................................29
16 DETECTION...............................................................................................30
16.1 PNEUMATIC DETECTION - HEAT ACTUATED DEVICES...............30
16.1.1 General....................................................................................30
16.1.2 Location of HADs on Smooth Flat Ceilings..............................31
16.1.3 Fixed Temperature HAD..........................................................32
17 SAFETY REQUIREMENTS........................................................................33
17.1 TOTAL FLOODING SYSTEMS..........................................................33
17.2 LOCAL APPLICATION SYSTEMS.....................................................33
18 FACTORY MUTUAL RULES.....................................................................34

v Manual No 59812-401
LIST OF ILLUSTRATIONS
Figure Page
Figure 1 Aiming Position for Angled Discharge Horns............................................18
Figure 2 Discharge Rate, per kg per min per m3
....................................................20
LIST OF TABLES
Table Page
Table 1 Volume Factors ..........................................................................................3
Table 2 Minimum Carbon Dioxide Concentration for Extinction ..............................5
Table 3 Hazard Factors...........................................................................................9
Table 4 Extended Discharge Gas Quantities for Enclosed Circulation: Rotating
Electrical Machines...................................................................................11
Table 5 Horn Selection and CO2 Quantity.............................................................17
Table 6 Aiming Factors for Nozzles Installed at an Angle (based on 150 mm
Freeboard)................................................................................................19
Table 7 Pipe Size Estimates..................................................................................22

INTRODUCTION
This manual describes the design principles to be used on all carbon dioxide (CO2) systems.
General requirements and design criteria are based on British Standard (BS) 5306 Part 4, but on
some occasions National Fire Protection Association (NFPA) 12 may be used as the base document.
Detailed information on components is given in the individual CO2 Engineering Data Sheets.
The importance of proper design cannot be over stressed as design concentrations and application
rates are critical for successful extinguishing.
The recommendations given in this document represent the best known technical data, but while the
aim has been to anticipate all considerations, the recommendations should be applied in practical
situations with discretion and due regard to local circumstances.
Full requirements for the design of CO2 fire fighting systems are given in BS5306 Part 4.

TOTAL FLOODING SYSTEMS
1 TOTAL FLOODING SYSTEMS
CO2 total flooding systems are based on creating an extinguishing concentration of CO2 within an
enclosed space containing the combustible materials. The quantity of CO2 is determined by applying
an appropriate flooding factor to the volume being protected.
The efficiency of a total flooding system depends upon maintaining the concentration for as long as
possible, so before total flooding can be considered as a method of extinguishing, the protected space
must be reasonably well enclosed. It is always advisable for an integrity test to be conducted to verify
the rate of leakage.
A fixed supply of CO2 is permanently connected to fixed piping and discharge nozzles are arranged to
discharge CO2 into the protected space.
1.1 Examples of Hazards
Rooms, vaults, enclosed machines, ovens, dust collectors, floor and ceiling voids and fume extraction
ducts.
1.2 Type of Fires
Fires that can be extinguished by total flooding methods are:
(a) Surface fires that can be extinguished quickly, such as those involving flammable liquids and
vapours.
(b) Deep seated fires that require cooling time in order to be extinguished, e.g. fires involving bulk
paper and other solids.
1.3 Where CO2 is NOT Effective
(a) Materials that contain their own oxygen supply and liberate oxygen when burning, e.g. cellulose
nitrate.
(b) Reactive metals e.g. sodium, potassium, magnesium, titanium, zirconium, uranium and
plutonium.
(c) Metal hydrides.
While CO2 may not extinguish these fires, it will not react dangerously or increase the burning rate.
CO2 will protect adjacent combustibles and will also extinguish fires of other materials in which the
reactive metals are often stored.
Example:
(a) Sodium stored or used under Kerosene.
(b) Cellulose nitrate in a solvent.
(c) Magnesium chips covered with heavy oil.

CO2 REQUIREMENTS FOR SURFACE FIRES
2 CO2 REQUIREMENTS FOR SURFACE FIRES
2.1 Basic Quantity
Multiply the volume to be protected (cubic metres) by the appropriate volume factor given in Table 1.
The answer will be in kilograms of CO2. This will protect an enclosure containing materials requiring a
design concentration of up to 34%.
The volume to be used is the gross volume of the enclosure but you are permitted to deduct
permanent, impermeable elements of the building structure i.e. beams, stanchions, solid stairways and
foundations.
Table 1 Volume Factors
Volume of Space Volume Factor Calculated Minimum
m3
kg CO2/m3
kg
<4 1.15
>4 <14 1.07 4.5
>14 <45 1.01 16.0
>45 <126 0.90 45.0
>126 <1400 0.80 110.0
>1400 0.74 1100.0
» NOTE 1 Table 1 Volume Factors, must ONLY be used for SURFACE FIRES.
» NOTE 2 For DEEP SEATED FIRES refer to Chapter 3.
Example:
Room: 6 m x 9 m x 3m = 162 m3
162 m3
x 0.80 kg/m3
= 129.6 kg
2.2 Uncloseable Openings
Openings shall be arranged to close automatically before or simultaneously with the start of the CO2
discharge. This can be done by self-closing door devices, fire curtains or steel shutters, refer to Data
Sheet 811-5000.
If it is not possible to seal the opening it is permissible for small openings to remain open provided
they do not exceed the limits shown below, and are compensated by the addition of extra carbon
dioxide.
2.2.1 Limits of Uncloseable Openings
The maximum area permitted is the smaller result of the following calculations:
(a) An area in square metres, which is numerically equivalent to 10% of the volume in cubic metres.
(b) 10% of the total area of all sides, top and bottom in square metres.
When uncloseable openings exceed this limitation, the system should be designed by a local
application method.

2.2.2 Compensation
Additional gas at the rate of 5 kg/m2
of opening.
Where necessary this quantity should be multiplied by the appropriate Material Conversion
Factor (MCF), refer to Section 2.3.
The additional quantity should be discharged through the regular pipework system and the flow rate
increased accordingly so that the additional quantity is discharged within the time specified in BS5306
Part 4.
2.3 Material Conversion Factor
For materials requiring a design concentration over 34%, the basic quantity of carbon dioxide
calculated, i.e. the result of using Table 1, plus the addition for losses through limited openings, shall
be increased by multiplying this quantity by the appropriate conversion factor in Table 2.
The most hazardous material in the enclosure must be selected no matter what the quantity of that
material.
For materials not listed consult Kidde Fire Protection as the design concentration may have to be
determined by test.
Example:
Room: 6 m x 9 m x 3 m high = 162 m3
162m3
x 0.80kg/m3
= 129.6kg
Uncloseable opening = 1.0 m2
= 5.0 kg
Basic quantity = 134.6 kg
If room contains butadiene as the most hazardous material: MCF = 1.3
134.6 kg x 1.3 = 175kg

Table 2 Minimum Carbon Dioxide Concentration for Extinction
Minimum Material
Material Design CO2 Conversion
Concentration (%) Factor
Acetaldehyde 34 1.0
Acetylene 66 2.5
Amyl Acetate 34 1.0
Acetone 31 1.0
Amyl Alcohol 34 1.0
Benzol, Benzene 37 1.1
Butadiene 41 1.3
Butane 34 1.0
Butyl Acetate 34 1.0
Butyl Alcohol 34 1.0
Carbon Disulphide 66 2.5
Carbon Monoxide 64 2.4
Coal Gas or Natural Gas 37 1.1
Cyclopropane 37 1.1
Diesel Fuel 34 1.0
Dowtherm 46 1.5
Ethane 40 1.2
Ethyl Ether 46 1.5
Ethyl Alcohol 43 1.3
Ethylene 49 1.6
Ethylene Dichloride 25 1.0
Ethylene Oxide 53 1.75
Hexane 35 1.1
Hydrogen 74 3.2
Isobutane 36 1.1
Kerosene 34 1.0
Lube oils 34 1.0
Methane 30 1.0
Methyl Alcohol 40 1.2
Paint 34 1.0
Pentane 35 1.1
Petroleum Spirit 34 1.0
Propane 36 1.1
Propylene 36 1.1
Quench, Lube Oils 34 1.0
Tar 34 1.0
Toluol 34 1.0
Turpentine 34 1.0
Transformer Oil 34 1.0
For materials not listed please contact Kidde Fire Protection

2.4 Temperature Correction
Additional quantities of CO2 are needed to compensate for the effects of abnormal temperature.
Hazards which operate at temperatures above 100°C may be more likely to re-ignite so it is necessary
to hold the extinguishing concentration for a longer period to assist cooling.
Add 2% carbon dioxide for each 5°C above 100°C.
Example:
Oven: 3 m x 1.5 m x 1.8 m = 8.1 m3
If the normal working temperature is 204°C:
204-100 = 104/5 = 20.8
20.8 x 2% = 41.6%
8.1m3
x 1.07 kg/m3
= 8.66 (basic quantity) x 1.416 (temp correction)
= 12.26 kg
CO2 has a lower expansion ratio at lower temperatures so it will be more dense and leakage would be
greater than normal.
Where the normal temperature of the enclosure is below -20°C, add 2% of CO2 for each 1°C below
-20°C.
Example:
Refrigerated space:
3 m x 6 m x 3 m = 54 m3
with a normal operating temperature of -23°C.
23°C - 20°C = 3°C x 2% = 6%
54 m3
x 0.90 kg/m3
= 48.6 kg (basic quantity) x 1.06 (temp correction)
= 51 .5 kg
If an addition has been made to the basic CO2 quantity to compensate for openings or application of
an MCF, the total quantity should be used in place of the basic quantity in the above examples.
2.5 Forced Ventilation
When forced air ventilation systems are used, they shall, if possible, be shutdown before, or
simultaneously, with the start of the CO2 discharge. If this cannot be done, additional CO2 must be
applied.
If there is a short run down time but the quantity of air removed is significant, additional CO2 must be
applied. The additional CO2 must be discharged within the time specified in BS5306 Part 4.
For calculation purposes the volume of air removed in one minute will be replaced with CO2 at the
design concentration being used.
Example:
Refer to the example in Section 2.3.
Assume the room has 30 m3
of air removed by the ventilation system in one minute.
30 m3
x 0.80 kg/m3
= 24 kg x 1.3 (MCF) = 31.2 kg + 175.0 kg (original) = 206.2 kg
Services such as heating, fuel supplies, paint spraying, conveyors etc. must also be shutdown before
or simultaneously, with the CO2 discharge.

2.6 Interconnected Volumes
In two or more interconnected volumes where free flow of CO2 can occur, the CO2 quantity shall be
the sum of the quantities calculated for each volume, using its respective volume factor. If one volume
requires greater than normal concentration, the higher concentration shall be used for all
interconnected volumes.
2.7 Venting for Surface Fire Systems
Leakage around doors and windows often provides sufficient pressure relief without special
arrangements being required. It is possible to calculate the area of free venting needed for very tight
enclosures but it is recommended you provide the customer with the formula and CO2 flow rate so that
his architect can take the responsibility.
P
Q
where:
X is the free venting area (in mm2
).
Q is the calculated carbon dioxide flow rate (in kg/min).
P is the permissible strength (internal pressure) of enclosure (in bar).
X=23.9

CO2 REQUIREMENTS FOR DEEP SEATED FIRES
3 CO2 REQUIREMENTS FOR DEEP SEATED FIRES
3.1 Basic Quantity
Multiply the volume to be protected (cubic metres) by the flooding factor given in Table 3.
Example:
Paper documents storage room:
6m x 6m x 3m high = 108m3
108 m3
x 2 kg/m3
CO2 = 216 kg
3.2 Openings
Total flooding systems protecting solid materials cannot tolerate the degree of openings permitted for
surface fire protection.
The design concentration must be maintainable over a long period, so low level openings are not
practicable. Small openings at or near the ceiling are ideal because:
(a) Compensation for losses involves only reasonable quantities of additional CO2.
(b) They allow the escape of hot gases.
(c) They prevent pressure increases that can stress the enclosure structure.
Any openings that cannot be closed shall be compensated for by the addition of CO2 equal in volume
to the expected loss during the extinguishing and holding time.
3.3 Forced Ventilation
When forced air ventilation systems are used, they shall, if possible, be shutdown before, or
simultaneously, with the start of the CO2 discharge. If this cannot be done, additional CO2 must be
applied.
If there is a short run down time but the quantity of air removed is significant, additional CO2 must be
applied. The additional CO2 must be discharged within the time specified in BS5306 Part 4.
For calculation purposes the volume of air removed in one minute will be replaced with CO2 at the
design concentration being used.
Example:
Assume the room has 30 m3
of air removed by the ventilation system in one minute:
30 m3
x 2 kg/m3
= 60 kg + 216 kg (original) = 276 kg
Services such as heating, fuel supplies, paint spraying, conveyors etc. must also be shutdown before
or simultaneously, with the CO2 discharge.
3.4 Interconnected Volumes
In two or more interconnected volumes where free flow of CO2 can occur, the CO2 quantity shall be
the sum of the quantities calculated for each volume, using its respective volume factor. If one volume
requires greater than normal concentration, the higher concentration shall be used for all
interconnected volumes.

Table 3 Hazard Factors
Based on an expansion ratio of 0.52 m3
/kg at a temperature of 10°C.
Hazard Design Flooding
Concentration Factors
(%) (kg/m3
)
Electrical equipment.
Enclosed rotating equipment
Dry electrical wiring
Electrical insulating materials 50 1.35
Computer installations *
Central processing areas and equipment 53 1.50
Data processing
Tape controlled machinery
and tape storage 68 2.25
Stores
Record stores and archives for
paper documents
Ducts and covered trenches 65 2.00
Fur storage vaults
Dust collectors 75 2.70
General
Cocoa
Leather
Silk
Wool 63 1.78
Coal
Coffee
Cork
Cotton
Peanuts
Rubber
Soybean
Sugar 75 2.70
* See also BS 6266.
» NOTE 1 Flooding factors for other deep seated fires should be agreed with Kidde Fire Protection.
» NOTE 2 Table 1 Volume Factors, is not applicable for deep seated fires and must not be used.

3.5 Extended Discharge
In some instances it may be necessary to have an extended discharge for leakage compensation with
a rate of flow that is considerably slower than that required for initial fire extinguishing. A typical
example is the protection of rotating electrical machinery, i.e. alternators and generators, where an
initial concentration has to be achieved in a short time and a minimum concentration of 30% during a
specified deceleration period, which should be held for 20 minutes.
Two separate banks of CO2 containers and distribution piping are used in this case, the ‘initial’ bank
discharging at a fast rate and the ‘extended’ bank discharging at a slow rate.
Table 4 is used to determine the quantity of CO2 to maintain minimum concentration.
The quantities are based on the nett internal volume of the machine and the deceleration time
assuming average leakage.
For non re-circulating machines with relief vents, add 35% to the quantities shown in Table 4.
3.5.1 Venting for Deep Seated Fire Systems
Leakage around doors and windows often provides sufficient pressure relief without special
arrangements being required. It is possible to calculate the area of free venting needed for very tight
enclosures but it is recommended you provide the customer with the formula and CO2 flow rate so that
his architect can take the responsibility.
P
Q
where:
X is the free venting area (in mm2
).
Q is the calculated carbon dioxide flow rate (in kg/min).
P is the permissible strength (internal pressure) of enclosure (in bar).
X=23.9

Carbon Dioxide
Required
5 mm 10 mm 15 mm 20 mm 30 mm 40 mm 50 mm 60 mm
kg lb m
3
ft
3
m
3
ft
3
m
3
ft
3
m
3
ft
3
m
3
ft
3
m
3
ft
3
m
3
ft
3
ft
3
45 100 34 1 200 28 1 000 23 800 17 600 14 500 11 400 9 300 6 200
68 150 51 1 800 43 1 500 34 1 200 28 1 000 21 750 17 600 14 500 11 400
91 200 68 2 400 55 1 950 45 1 600 37 1 300 28 1 000 24 850 18 650 14 500
113 250 93 3 300 69 2 450 57 2 000 47 1 650 37 1 300 30 1 050 23 800 17 600
136 300 130 4 600 88 3 100 68 2 400 57 2 000 47 1 650 37 1 300 28 1 000 20 700
159 350 173 6 100 116 4 100 85 3 000 71 2 500 57 2 000 47 1 650 34 1 200 26 900
181 400 218 7 700 153 5 400 108 3 800 89 3 150 71 2 500 57 2 000 45 1 600 34 1 200
204 450 262 9 250 193 6 800 139 4 900 113 4 000 88 3 100 74 2 600 60 2 100 45 1 600
227 500 306 10 800 229 8 100 173 6 100 142 5 000 110 3 900 93 3 300 79 2 800 62 2 200
250 550 348 12 300 269 9 500 210 7 400 173 6 100 139 4 900 119 4 200 102 3 600 88 3 100
272 600 394 13 900 309 10 900 244 8 600 204 7 200 170 6 000 147 5 200 127 4 500 110 3 900
295 650 436 15 400 348 12 300 279 9 850 235 8 300 200 7 050 176 6 200 156 5 500 136 4 800
319 700 479 16 900 385 13 600 314 11 100 266 9 400 230 8 100 204 7 200 181 6 400 159 5 600
340 750 524 18 500 425 15 000 350 12 350 297 10 500 259 9 150 232 8 200 207 7 300 184 6 500
363 800 566 20 000 464 16 400 385 13 600 329 11 600 289 10 200 261 9 200 232 8 200 207 7 300
386 850 609 21 500 503 17 750 421 14 850 360 12 700 320 11 300 289 10 200 258 9 100 229 8 100
408 900 651 23 000 541 19 100 456 16 100 391 13 800 350 12 350 317 11 200 285 10 050 255 9 000
431 950 697 24 600 581 20 500 491 17 350 422 14 900 379 13 400 346 12 200 312 11 000 278 9 800
454 1 000 739 26 100 620 21 900 527 18 600 453 16 000 411 14 500 374 13 200 337 11 900 303 10 700
476 1 050 782 27 600 666 23 300 564 19 900 484 17 100 442 15 600 402 14 200 364 12 850 326 11 500
499 1 100 824 29 100 697 24 600 596 21 050 515 18 200 470 16 600 430 15 200 389 13 750 351 12 400
522 1 150 867 30 600 736 26 000 632 22 300 547 19 300 501 17 700 459 16 200 416 14 700 374 13 200
544 1 200 912 32 200 773 27 300 667 23 550 578 20 400 532 18 800 487 17 200 442 15 600 399 14 100
567 1 250 954 33 700 813 28 700 702 24 800 609 21 500 562 19 850 515 18 200 467 16 500 422 14 900
590 1 300 1 000 35 300 852 30 100 738 26 050 641 22 650 592 20 900 544 19 200 494 17 450 447 15 800
612 1 350 1 042 36 800 889 31 400 773 27 300 673 23 750 623 22 000 572 20 200 521 18 400 472 16 650
635 1 400 1 087 38 400 929 32 800 809 28 550 705 24 900 654 23 100 600 21 200 548 19 350 496 17 500
658 1 450 1 130 39 900 968 34 200 844 29 800 736 26 000 685 24 200 629 22 200 575 20 300 520 18 350
680 1 500 1 172 41 400 1 008 35 600 879 31 050 767 27 100 715 25 250 657 23 200 600 21 200 544 19 200
CO2REQUIREMENTSFORDEEPSEATEDFIRES
Table4ExtendedDischargeGasQuantitiesforEnclosedCirculation:
RotatingElectricalMachines
Issue5December200411ManualNo59812-401

DISCHARGE RATES FOR TOTAL FLOODING SYSTEMS
4 DISCHARGE RATES FOR TOTAL FLOODING SYSTEMS
The importance of the following calculations is that pipe and nozzle sizes are based on the desired
flow rate, refer to Chapter 9.
0.52 m3
/kg @ 10°C
0.54 m3
/kg @ 20°C
0.56 m3
/kg @ 30°C
4.1 Surface Fires
For surface fires the design concentration will be achieved in one minute.
Example:
Room requiring 1,000 kg of CO2.
This would be the basic quantity calculated, plus all additions but not including
any special addition for cooling purposes, refer to Section 2.4.
1,000 kg of CO2 ÷ by one minute
Flow rate = 1000 kg/min
4.2 Deep Seated Fires
For deep seated fires the design concentration will be achieved within seven minutes but the rate will
not be less than that required to develop a concentration of 30% in two minutes.
This would be the basic quantity calculated, plus all additions but not including an extended discharge.
Example:
Paper documents storage room:
6 m x 6 m x 3 m high = 108 m3
108 m3
x 2 kg/m3
of CO2 = 216 kg
30% Vol = 32.4 m3
32.4 in3
÷ 0.56 m3
/kg (expansion 30°C) = 57.85 kg ÷ 2
Flow rate = 29 kg/min
Flow time = 216 ÷ 29 = 7.45 minutes
To ensure a flow time of 7 minutes
Use 216 ÷ 7 = 31 kg per minute
Most calculations produce a flow time of between four and seven minutes, the last step shows what to
do if seven minutes is exceeded.

NOZZLE DISTRIBUTION
5 NOZZLE DISTRIBUTION
For flooding rooms use discharge horn nozzles Part No K61793 or K61792, refer to Data Sheet
811-9148, depending upon flow rate required.
Nozzles should spaced approximately 6 m apart.
For rooms up to 5 m high, install nozzles at a height of 2.5 m and angle of 45°. Average throw
approximately 4 m.
For rooms between 5 and 10 m high, install at 2/3 height up from floor.
For rooms with high stacking or rooms over 10 m high, it may be necessary to install at 1/3 and 2/3
levels.
Obstructions: If obstructions interfere with efficient distribution it may be necessary to use more
nozzles than specified above, or even locate nozzles at ceiling level.
To protect the nozzle in dirty conditions use Part No. K5814, refer to Data Sheet 811-9139.
To inject CO2 into ducts use nozzle Part No. K13045, refer to Data Sheet 811-9151.

LOCAL APPLICATION SYSTEMS
6 LOCAL APPLICATION SYSTEMS
Local application systems are used for extinguishing surface fires in flammable liquids, vapours and
shallow solids, where the hazard is not enclosed or where the degree of enclosure does not conform
to the requirements for total flooding.
In carbon dioxide local application systems, CO2 is discharged directly into the fire. The efficiency of
the system depends on the CO2 contacting the burning surface at the required rate of flow. Correct
discharge horn nozzle positioning is critical.
Quantities of CO2 must not be determined by using Table 1.
6.1 Examples of Hazards
Dip tanks, quench tanks, printing presses, textile machinery, coating machinery, spray booths, kitchen
ranges and hoods etc.
6.2 General
The important point is that the hazard shall be isolated from other hazards and the entire hazard
protected simultaneously, so that fire is prevented from spreading to unprotected areas and a re-flash
from unprotected areas is not possible.
For example, in a six stand printing press simultaneous protection would be given to all printing
stands, the drying boxes, the ink supply containers, and the flammable vapour extract duct. Similarly in
an industrial food processing environment, simultaneous protection is given to the cooking oil
surfaces, the burner compartment, the fume hood and extraction duct.
Any service likely to affect the efficiency of the CO2 discharge must be interlocked with the system so
as to automatically shut down. This would include ventilating fans, conveyors, flammable liquid pumps,
mixers, heaters, dryers, sprayers etc.
6.3 CO2 Quantities
The quantity of CO2 to be used in a local application system can be determined by either of two
methods depending upon the hazard construction, but there are various factors that are common to
both.
The amount of CO2 required is computed by multiplying the total nozzle discharge rate by the time the
discharge is required to be maintained.
For high pressure systems, the computed quantity of CO2 is increased by 40% to compensate for the
fact that only 70% of the cylinder content is discharged as a liquid and considered effective.
If a combination of total flooding and local application protection is being given, this increase is not
needed for the total flooding portion. The discharge rate for the total flooding portion can be calculated
by dividing the quantity required for total flooding by the factor 1.4 and by the time of the local
application discharge in minutes.

LOCAL APPLICATION SYSTEMS
6.3.1 Duration of Discharge
The minimum, effective liquid discharge time is 30 seconds.
This is increased if inherently hot surfaces or materials require a longer time to assist in cooling and to
prevent re-ignition.
The standard does not specify the prolonged discharge time so this must be decided by the designer
taking into account the temperature involved and local site considerations, but somewhere between
one and three minutes is usually adequate.
The minimum discharge time for Carbon Dioxide being applied to liquids that have an auto-ignition
temperature that is lower than their boiling temperature shall be 3 min.
For example when protecting a kitchen range a prolonged discharge is given to the cooking oil surface
(3 minutes) but only 30 seconds to other associated areas.
6.3.2 Material Conversion Factor
A MCF is applied when appropriate, as specified in Section 2.3. The increased quantity of CO2 has to
be discharged during the 30 second minimum period.
Example:
Local application portion:
Flow rate (kg/min) x discharge time (mins) x 1.4 x MCF = kg of CO2 required
e.g. 100 kg/min x 0.5 x 1.4 x 1.5 (Ethyl Ether)
=100 x 0.7x 1.5
= 105kg
pIus 150 kg for a 90 second discharge for cooling = 315 kg in total and discharged at a
rate of 150 kg/min
Total flooding portion:
Quantity of CO2 required is determined by the total flooding method
Flow rate = Quantity of CO2
1.4 x discharge time
e.g. 14 kg of CO2 is for a Total Flooding portion of a combined Local Application minus
Total Flooding system (discharge time 0.5min)
Flow rate = 14 kg = 14 = 20 kg/min
1.4 x 0.5 0.7
The foregoing information relates to high pressure storage containers of which the majority of systems
comprise.
If a low pressure bulk storage tank is employed, the 1.4 liquid flow factor is omitted.
Also the pre-liquid flow time, which is a feature of low pressure systems must not be included as part
of the 30 second liquid discharge time.
» NOTE Only liquid discharge is effective in a local application system.

RATE BY AREA METHOD
7 RATE BY AREA METHOD
The area method of system design is used where the fire hazard consists of flat surfaces or low-level
objects associated with flat horizontal surfaces.
When flammable liquid fires are to be extinguished, a minimum freeboard of 150 mm is necessary.
7.1 CO2 Quantity
The maximum area protected by each discharge horn and the amount of CO2 required varies with the
distance of the horn from the surface being protected. The greater the distance, the larger the area
covered and quantity of CO2 required.
The portion of a hazard surface protected by each horn is based on its ‘side of square’ coverage.
Nozzle sizes are selected for their area coverage and flow rate so as to minimise the amount of CO2
required.
See Table 5 for details of horn height, area coverage and CO2 quantity combinations.

RATE BY AREA METHOD
Table 5 Horn Selection and CO2 Quantity
Part Nos. K5814 up to N8, refer to Data Sheet 811-9139.
Part Nos. K61793 up to N12 and K61792 up to N18, refer to Data Sheet 811-9148.
Coated Surface (m) Discharge Horn Liquid Surface (m)
Area
(m2
)
Side of
Square
Height
(m)
Rate
(kg/min)
Area
(m2
)
Side of
Square
1.17 1.08 0.60 14.0 0.84 0.91
1.23 1.11 0.68 15.7 0.88 0.94
1.30 1.14 0.76 17.3 0.93 0.96
1.36 1.17 0.84 19.3 0.98 0.99
1.43 1.19 0.91 20.5 1.02. 1.01
1.50 1.22 0.99 21.6 1.07 1.03
1.56 1.25 1.07 23.6 1.11 1.05
1.62 1.27 1.14 25.2 1.16 1.08
1.69 1.30 1.22 26.8 1.20 1.09
1.76 1.33 1.30 28.4 1.25 1.12
1.82 1.35 1.37 30.0 1.30 1.14
1.86 1.37 1.45 31.6 1.35 1.16
1.95 1.40 1.52 33.2 1.39 1.18
2.01 1.42 1.60 34.8 1.44 1.20
2.08 1.44 1.67 36.4 1.49 1.22
2.15 1.46 1.75 38.0 1.53 1.23
2.21 1.48 1.83 39.5 1.58 1.26
2.28 1.50 1.90 41.1 1.62 1.27
2.34 1.53 1.98 42.7 1.67 1.29
2.41 1.55 2.06 44.3 1.72 1.31
2.47 1.57 2.13 46.0 1.76 1.33
2.54 1.59 2.21 47.5 1.81 1.34
2.60 1.81 2.29 49.1 1.86 1.36
2.60 1.61 2.36 50.7 1.86 1.36
2.60 1.61 2.44 52.3 1.86 1.36
2.60 1.61 2.51 53.9 1.86 1.36
2.60 1.61 2.59 55.5 1.86 1.36
2.60 1.61 2.67 57.0 1.86 1.36
2.60 1.61 2.74 58.6 1.86 1.36
» NOTE Interpolations are not permitted.

RATE BY AREA METHOD
7.2 Horn Dispositions
Hazard conditions often restrict the positioning of discharge horns but to use Table 5 accurately, horns
must be installed perpendicular to the hazard and centred over the area to be protected. They may
also be installed at angles between 45 and 90° to the plane of the hazard. The ‘height’ used in
determining the necessary flow rate and area coverage is the distance from the aiming point on the
protected surface to the face of the horn measured along the axis of the horn.
See Figure 1 for a typical example.
Figure 1 Aiming Position for Angled Discharge Horns

RATE BY AREA METHOD
The aiming point is measured from the near side of the area protected and is located by multiplying
the fractional aiming factor in Table 6 by the width of the area protected by the horn.
Table 6 Aiming Factors for Nozzles Installed at an Angle
(based on 150 mm Freeboard)
Discharge Angle (See Note 1) Aiming Factor (See Note 2)
45 to 60°
60 to 75°
75 to 90°
90° (perpendicular)
174
1/4 to 3/8
3/8 to 1/2
1/2 (centre)
» NOTE 1 Degrees from plane of hazard surface.
» NOTE 2 Fractional amount of nozzle coverage area.
It is important that horns are located so that the discharge is not obstructed and their alignment is not
easily disturbed.
Discharge horns must be located so as to develop an extinguishing concentration over coated stock
that may be extending over a protected surface, e.g. freshly dipped items hanging on a conveyor line.
In these circumstances additional horns may be required for this specific purpose, particularly if stock
extends more than 600 mm above a protected surface.
Note the increase in area coverage that is given in Table 5 for coated surfaces compared with liquid
surfaces.
The effects of severe air currents and draughts shall be compensated for by adjusting horn locations
or by providing additional horns to suit the expected conditions.
Example:
Hazard: Quench Tank
Material: Quench Lube Oil
MCF: 1
Surface dimensions: 0.92 m x 2.13 m
Horn Location. The site survey has shown that discharge horns can be positioned anywhere from 0.92
m to 1.83 m above the liquid surface without interfering with plant operations.
Design Aim. To select a combination of horn height, area coverage and flow rate to adequately cover
the area with the minimum CO2 quantity.
Procedure. Consider the size to be protected. What is the minimum number of horns that could be
used to cover a length of 2.13 m of liquid surface?
Answer. Two horns with a side of square each of 1.08 m. This selection also satisfies a width of 0.92
m since it is less than 1.08 m, and also an area of 1.95 m² since it is less than can be protected by the
two horns selected.
Horns required. Two located centrally above the liquid surface pointing down from a height of 1.14m.
Flow rate. 2 x 25.2 kg per minute = 50.4 kg/min
CO2 required. 50.4 x 1 (MCF) 1 4 (liquid flow for 0.5 min) = 50.4 x 0.7 = 35.3 kg
2
This provides the basic CO2 quantity for the minimum permitted length of time but the discharge time
at the calculated flow rate could be increased for cooling to prevent reignition.

RATE BY VOLUME METHOD
8 RATE BY VOLUME METHOD
The assumed volume method of system design is used where the fire hazard consists of three
dimensional irregular objects that cannot easily be reduced to equivalent surface areas, or where the
degree of enclosure does not conform to the requirements for total flooding.
8.1 Assumed Enclosure
The total discharge rate of the system is based on the volume of hypothetical enclosure surrounding
the hazard.
The assumed enclosure must have a closed floor.
The assumed walls and ceiling of the ‘enclosure’ shall be at least 0.6 m from the main hazard unless
actual walls are involved, and they must enclose all areas of possible leakage, splashing or spillage.
No deduction from the assumed volume shall be made for solid objects within this volume. A minimum
dimension of 1.2 m shall be used in calculating the assumed volume.
8.2 CO2 Quantity
The total discharge rate for the basic system shall be 16 kg/min per m3
of assumed volume.
If the assumed enclosure is partly defined by permanent continuous walls extending at least 0.6 m
above the hazard, the discharge rate may be proportionately reduced to not less than 4 kg/min per m3
for the actual walls completely surrounding the hazard. See Figure 2 for quickly deciding the
appropriate discharge rate.
Figure 2 Discharge Rate, per kg per min per m3

RATE BY VOLUME METHOD
8.3 Horn Dispositions
A sufficient number of horns must be used to adequately cover the entire hazard volume and they
must be located and directed so as to retain the CO2 in the hazard volume by suitable co-operation
between horns and objects making up the hazard volume.
If forced draughts or air currents are anticipated they must be compensated for by a suitable
disposition of the discharge horns.
To ensure that discharge horns are not located so remote from the risk as to be ineffective, and not so
close to liquids as to cause splashing, a check can be made by using Table 6.
Example:
If horn, Part No. K61792, with a flow rate of 52.3 kg/min, was selected it should be located
approximately 2.44 m from the surface it is protecting.
Example 1
Hazard: Paint Spray Booth (ignoring extract duct for this calculation)
Actual dimensions: 2.44 m wide (open front) x 2.13 m high x 1.83 m deep
Assumed volume: 2.44 m x 2.13 m x 2.43 m (1.83 m deep + 0.6 m) = 12.63 m3
Percent Perimeter enclosed =
244 + 1.83 + 183 = 6.1 = 71%
2.44 + 2.44 + 1.83 + 1.83 8.54
Discharge rate for 71% enclosure: from Figure 2 = 7.5 kg/min m3
Discharge rate: 12.63 m3
x 7.5 kg/min m3
= 94.73 kg/min
CO2 required: 94.73 kg/min x 0.7 = 66.3 kg x MCF (1.0)
Example 2
Hazard: Printer with 4 sides and top open (no continuous solid walls and ignoring
extract duct for this calculation).
Actual dimensions: 1.22 m wide x 1.52 m long x 1.22 m high (this is the maximum
hazard outline).
Assumed volume: 2.42 m (1.22 + 0.6 + 0.6) x 2.72 m (1.52 + 0.6 + 0.6)
x 1.82 m (1.22 + 0.6) = 11.98 m3
Percent perimeter enclosed: Zero
Discharge rate for 0% enclosure: 16 kg/min m3
Discharge rate: 11.98 m3
x 16 kg/min m3
= 191.7 kg/min
CO2 required: 191.7 kg/min x 0.7 = 134.2 kg x MCF (1.0)
» NOTE The assumed volume method of system design always needs more gas than the rate
by area method, so to be competitive it is always worth considering if the risk can be
protected by the area method. Example 2 can, but Example 1 cannot.

PIPE SELECTION
9 PIPE SELECTION
The selection of the various grades of pipe and fittings in order to meet the duties imposed by
operating pressures arid temperatures is made by complying with BS 5306 part 4 or NFP A 12 as
appropriate.
9.1 Rate of Application
Also see to Chapter 4.
Where advancement of flame is potentially rapid, as in surface fires, the CO2 discharge must be
comparably fast to minimise damage.
Where the spread of fire is potentially slow, such as deep seated fires in solid materials, more
emphasis is placed on maintaining a fire suppression concentration for a lengthy period of time to
allow time for cooling.
Where the spread of fire may be faster than normal for the type of fire expected, or where high values,
or vital machinery or equipment are involved, rates higher than the stated minimums may be used.
Where a hazard contains materials that will produce both surface and deep seated fires, the rate of
application should be at least the minimum required for surface fires.
9.2 Pipe Size Estimates
Hydraulic pipe size calculations are accurately determined by using the Kidde Fire Protection CO2
Computer Calculation Program. However, for estimating for a quotation, only a reasonably accurate
result is needed and this can be achieved by using Table 7.
Table 7 Pipe Size Estimates
Metric
Flow Rate
(kg/min)
Estimated Pipe Size
Nominal bore (mm)
Up to 123 20
124 to 177 25
178 to 363 32
364 to 545 40
546 to 1045 50
1045 to 1363 65
Imperial
Flow Rate
(lbs/min)
Estimated Pipe Size
Nominal bore (inches)
Up to 270 ¾
271 to 390 1
391 to 800 1¼
801 to 1200 1½
1201 to 2300 2
2300 to 3000 2½

PIPE SELECTION
Examples
(a) A surface fire where the design concentration has to be achieved in one minute. If a space
requires 300 kg of CO2, the flow rate from the main manifold would be 300 kg/min and the size
of the feed pipe would be 32 mm bore.
If the system used 4 discharge horns in a balanced distribution system, the feed pipe would
branch into two pipes each flowing at 150 kg/min and would be sized 25 mm bore.
» NOTE The design concentration would include any extra CO2 for losses through openings
and that demanded by the MCF but would not include any extra CO2 allowed for
cooling. This would be allowed to discharge at the same rate and would extend the
discharge time beyond one minute.
The same philosophy applies in a local application system except that the minimum discharge
time is 30 seconds, which may be extended beyond this time to discharge any extra CO2 added
for cooling.
(b) A deep seated fire where the design concentration has to be achieved within seven minutes, but
a concentration of 30% (must be achieved within) two minutes.
When an order has been received, a Contract Engineer would calculate the flow rate accurately,
as shown in Section 4.2.
For estimating purposes it is sufficient to adopt a short cut method.
To determine the flow rate divide the volume protected by:
3 if in cubic metres and answer in kg/min.
51 if in cubic feet and answer in lbs/min.
(c) In an extended discharge system where the CO2 quantity is derived from Table 4, it is simply
necessary to divide the quantity of CO2 required by the length of time of the extended discharge
to determine the flow rate.
9.3 Nozzle Sizes
These are determined by use of the Calculation Program, and nozzle orifice sizes are drilled according
to Data Sheet 811-9148.
A point to bear in mind is that the maximum number of discharge horns that can be fed by one
container is 11 – N3.
The larger the nozzle orifice the smaller the number of horns that can be used, i.e. only one N11

STORAGE CONTAINER LOCATION
10 STORAGE CONTAINER LOCATION
It is important to get a commitment from a prospective client about the location of storage containers
because this will affect the installation of pipe, detection lines and cabling, and remote pull controls.
The containers shall be located in a secure area and arranged so that they are readily accessible for
inspection, testing, recharging and other maintenance.
Containers shall be located as near as possible to the space they protect. They may be located within
the protected space, but must not be exposed to a fire in a manner that is likely to impair system
performance. If located within the protected space the manual/pneumatic actuator can be used to
provide a means of mechanically operating the system from outside the protected space. The chosen
location should provide protection from mechanical, chemical, electrical and other types of damage.
Suitable guards or enclosures should be provided when necessary, as required by an appropriate risk
analysis. The floor at the container location must be suitable for withstanding the loading exerted by
the containers.
The containers must not be exposed to the direct rays of the sun. When excessive temperature
variations are expected, suitable enclosures shall be provided.
The general ambient storage temperatures should not exceed the following:
(a) For total flooding systems:
not greater than 55ºC or less than -18ºC.
(b) For local application systems:
not greater than 46ºC or less than 0ºC.
» NOTE The minimum storage temperature for local application is higher than that allowed for
total flooding systems because the discharge area limit tests were carried out at a
minimum temperature of 0ºC and to operate at lower temperatures would cause the
figures in Table 5 to be incorrectly applied.

DISTRIBUTION VALVES
11 DISTRIBUTION VALVES
When the multiple hazards are located reasonably close together they can be protected with a single
bank of containers with the CO2 being directed to the hazard on fire by opening the appropriate
distribution valve on a distribution valve manifold.
When using this method it is important to consider the list below:
(a) The amount of CO2 is sufficient for the largest hazard.
(b) There is only one supply of agent so it must not be possible for fire to spread from one zone to
another.
(c) Any number of zones can be protected by a single bank of containers but Insurers’ rules
generally limit the number to 5.
(d) A reserve supply of CO2 should be considered.

AUTOMATIC OPERATION
12 AUTOMATIC OPERATION
Systems should preferably be operated automatically by a detection system which is appropriate to
the risk.
Where applicable, e.g. slow burning hazards, the requirements of BS5839 should be observed.

MANUAL CONTROL
13 MANUAL CONTROL
All systems must be fitted with a manual release facility.
Refer to Data Sheet 841-5027.
13.1 Manual Release
When mechanically operated pull-handles are used the following limitations apply:
Maximum length of cable =45 m
Maximum number of corner pulleys = 10
Maximum number of sets = 1
All mechanical functions must be tested upon completion of the installation to ensure proper
performance.

ALARMS
14 ALARMS
System condition indicators should be provided as appropriate to the surroundings.
(a) A total flooding systems should have indicators located outside the entrance doors to show:
CO2 Discharged - red lamp
Manual Control only - green lamp
Automatic and Manual Control - amber lamp
These indications may not always be necessary for a local application system.
(b) Additional alarms may be needed to be transmitted to remote locations including a Central
Station, and other system conditions may be required such as:
System Totally Disabled - amber lamp
Fire - red flashing lamp
System Operated - red steady lamp
Supply Healthy - green lamp
Warning labels are required to be located alongside manual release points, refer to Data Sheet
811-9225, and located on all entrance doors, refer to Data Sheet 811-9237.
Depending upon the size and complexity of the site or system, instructional wall charts may be
needed.
Operating and Maintenance manuals should always be provided.
Audible alarms should be provided as appropriate to the type of system and protected area, but at
least to the requirements of B5306 Part 4.
Where BS5839 is not a requirement, local alarms may be mains operated provided the supply can be
guaranteed.

ELECTROSTATIC DISCHARGE
15 ELECTROSTATIC DISCHARGE
WARNING
CO2 FIRE EXTINGUISHING SYSTEMS MUST NOT BE USED
FOR INERTING EXPLOSIVE ATMOSPHERES.

DETECTION
16 DETECTION
Automatic detection systems used with CO2 extinguishing systems should comply with appropriate
Codes of Practice, these include:
1. BS5839 - Fire Detection and Alarm Systems in Buildings.
2. BS6266 - Data Processing Installations.
3. FOC Rules.
4. This Manual.
» NOTE Attention is drawn to the considerably higher concentration of detectors required by
BS6266 when protecting computer suites.
This philosophy should not be extended into other areas of protection without prior consultation with
Kidde Fire Protection.
The following guidance is given for use when designing systems using pneumatic detection systems.
16.1 Pneumatic Detection - Heat Actuated Devices
16.1.1 General
Heat Actuated Devices (HADs) are heat detectors and the following general points must be
considered before using the devices.
(a) It is always necessary to determine that the minimum expected quantity of fuel is sufficient to
produce a significant rise in the ambient temperature.
(b) Heat detection should never be used where the fire can be of a smouldering, or primarily smoke
producing type.
(c) Height reduces the efficiency of heat detectors: it takes a larger floor level fire to actuate a
detector in a tall room, than a room with a height of only 3 m.
(d) Where the passage of smoke or hot gas from a position to a detector is disturbed by a ceiling
obstruction (such as a beam) having depth greater than 450mm, then the obstruction should be
treated as a wall for the purposes of detector location.
(e) Rate-of-rise systems are recommended only for Class B flammable liquid, or exceptionally fast
burning Class A types of hazards.
(f) Fixed temperature systems should be used where rapid changes in temperature are the norm,
such as forced hot air ovens, kitchens, boiler houses, lantern lights, etc. The operating
temperature of the detector should be about 30ºC above the maximum working temperature. Be
aware that capillary tubing can act as a rate-of-rise detector so routes outside the rapid change
area must be found.
(g) Detectors fitted in lantern lights should be protected from direct sunlight and fitted at least
50 mm below the glass.

DETECTION
16.1.2 Location of HADs on Smooth Flat Ceilings
(a) Distance between detectors and walls.
(i) HADs shall be spaced no more than 10 m apart.
(ii) Where ceilings are level, the distance between the wall and the nearest detector should not
exceed one half the distance allowed between detectors.
(iii) With sloped ceilings, (slope more than 1 in 10) and apexed ceilings, consult Kidde Fire
Protection.
(b) Height of detector above the hazard.
Where detectors are place more than 7 m above the hazard, consult Kidde Fire Protection for
guidance on the spacing of detectors.
(c) Number of detectors on one circuit:
(i) There shall be no more than six HADs on any one detection circuit or control head.
(ii) The maximum length of 1/8” (3mm) O.D. tube per detection circuit is 210 m.
Each HAD is equivalent to 30 m of 1/8” (3mm) O.D. tube:
1 HAD + 180 m tube
2 HAD + 150 m tube
3 HAD+ 120 m tube
4 HAD + 90 m tube
5 HAD + 60 m tube
6 HAD + 30 m tube
(d) Reducing the risk of accidental discharge:
(i) Care should be taken to prevent unwanted discharges as a result of normal ambient or
operating conditions. This includes most forced air sources such as exhaust systems, unit
heaters and air conditioning systems; as well as the opening of oven or furnace doors,
opening doors from the protected area or a heating system able to rapidly raise the
temperature of the hazard. Similarly consider the effect of locating detectors adjacent to
fresh air inlets that will dilute heat build up.
(ii) Where portions of a single hazard have different temperature characteristics, the HAD’s
in each section shall be installed on a separate cell of a check valve unit.

DETECTION
16.1.3 Fixed Temperature HAD
(a) Fixed temperature HAD’s employ a meltable alloy slug are available for a limited range, contact
Select an operating temperature that is at least 30ºC above the maximum expected
temperature.

SAFETY REQUIREMENTS
17 SAFETY REQUIREMENTS
Suitable safeguards are necessary to protect people in areas where the atmosphere may be made
hazardous by a carbon dioxide fire extinguishing system.
The principal risk is from suffocation. The effects of toxicity are usually not considered a life hazard.
17.1 Total Flooding Systems
Entry into a protected space may only be made when the system is on manual control and automatic
release has been prevented.
If a CO2 protected room is normally occupied by people a normally closed valve should be fitted into
the feed pipe so that a malicious or accidental release at the container bank is stopped from
discharging into the room. The valve should only open when demanded by the detectors or by a
manual release unit.
The condition of the valve should be automatically monitored and indicated. CO2 trapped in the feed
pipe should be indicated by means of a pressure switch and a locked closed valve fitted so that the
CO2 can be safely vented to atmosphere.
A time delay may be used, but only in addition to an isolation device, refer to Chapter 14 for alarm
signals.
17.2 Local Application Systems
An isolating device to prevent automatic release is not necessary, if it can be shown that following a
risk analysis a hazardous concentration cannot be created within the total volume of the room
containing the local application system. A time delay and pre-discharge alarm is acceptable to the
Health and Safety Executive in this circumstance.
A concentration in excess of 10% on the nett volume could be considered hazardous to some people.
Concentrations below 5% are harmless to the majority of people.
The facility provided on system actuators and control heads for totally disabling a system are not to be
used as a normal ‘entry to space isolating device’.

FACTORY MUTUAL RULES
18 FACTORY MUTUAL RULES
Kidde Fire Protection has official approval of its CO2 equipment by Factory Mutual (FM) Insurance.
These are generally similar to NFPA 12 rules, with some variations.

Issue B December 2004 Manual No 59812-400
High Pressure
Carbon Dioxide
INSTALLATION,
COMMISSIONING &
MAINTENANCE MANUAL

© K.F.P.S. Ltd December 2004 Manual No 59812-400
ii
duplicate or otherwise copy this document and rights to disclose the document and the information
that it contains to others and the right to use the information contained therein may be acquired only
by written permission signed by a duly authorised officer of Kidde Fire Protection.
© Copyright Kidde Fire Protection Services Ltd.

iii
TABLE OF CONTENTS
Chapter Page
FOREWORD.........................................................................................................1
1 GENERAL....................................................................................................2
1.1 SAFETY PRECAUTIONS ....................................................................2
1.2 PRELIMINARY CHECKS.....................................................................3
PART 1 INSTALLATION......................................................................................4
2 CO2 CYLINDERS AND RACKING...............................................................4
2.1 CO2 CYLINDERS .................................................................................4
2.1.1 Klem Cylinder Valves K23521 and K24509.............................5
2.2 INSTALLATION....................................................................................6
2.2.1 Single Cylinder ........................................................................6
2.2.2 Single Row Cylinders ..............................................................7
2.2.3 Double Row Cylinders.............................................................8
3. CO2 MANIFOLD PIPE ................................................................................10
3.1 MANIFOLD BRACKETS, SINGLE ROW ...........................................11
3.2 MANIFOLD BRACKETS, DOUBLE ROW..........................................11
4. DISTRIBUTION PIPING.............................................................................12
4.1. PIPING...............................................................................................12
4.2 ELECTRICAL CLEARANCES............................................................15
4.3 INSTALLATION..................................................................................16
5. PRESSURE OPERATED DIRECTION VALVES.......................................17
5.1 ¾ TO 2 INCH POD VALVES..............................................................18
5.1.1 Pressure Operation ...............................................................19
5.1.2 Manual Operation..................................................................19
5.1.3 Valve Open Indication ...........................................................19
5.2 3 AND 4 INCH POD VALVES ............................................................20
5.2.1 Pressure Operation ...............................................................21
5.2.2 Manual operation...................................................................21
5.2.3 Valve Open Indication ...........................................................21
5.3 3 AND 4 INCH COMPANION FLANGE, BOLTS AND GASKET........22
5.4 SAFETY OUTLETS K 921 AND K22968 ..........................................23
5.5 INSTALLATION..................................................................................26

iv
6. DISCHARGE LOOPS K21578 AND K97112.............................................27
6.2. RIGID DISCHARGE LOOP K21578...................................................27
6.2 FLEXIBLE DISCHARGE LOOP K97112............................................28
6.3 INSTALLATION..................................................................................29
7. SYSTEM ACTUATOR ASSEMBLY...........................................................30
7.1 NITROGEN PILOT GAS CYLINDER AND VALVE ............................31
7.2 OPTIONAL PRESSURE MONITORING SWITCH.............................32
7.3 CONTROL HEAD K62303 .................................................................33
7.4 CONTROL HEAD WITH SWITCHES K62304 ...................................34
7.5 CONTROL HEAD MOUNTING BRACKET K62487...........................35
7.6 SAFETY AND RESET PIN K62401 ...................................................36
Retain reset pin in safe location for future use. ..................................36
7.7 INSTALLATION..................................................................................37
8. CONTROL HEAD ACTUATING DEVICES................................................39
8.1 MANUAL PUSH-TO-FIRE BUTTON K62412.....................................40
8.2 SOLENOID ACTUATORS K62422B AND K93206/AX ......................41
8.3 FLAMEPROOF 24V D.C SOLENOID K93206/AX .............................42
8.4 INSTALLATION..................................................................................43
8.4.1 Standard Solenoid.................................................................43
8.4.2 Flameproof Solenoid .............................................................44
8.4.3 Control Head and Solenoid Wiring ........................................45
8.4.4 Special Instructions to comply with 94/9/EC (ATEX) .............46
8.5 PNEUMATIC DIAPHRAGM ACTUATOR K62459 .............................47
8.6 PNEUMATIC BREATHER VENTS K62895 .......................................48
8.7 INSTALLATION..................................................................................49
8.8 CABLE RELEASE ASSEMBLY K62478 ............................................49
8.8.1 Installation.................................................................................50
8.9 PULL BOX K 1114 .............................................................................52
8.9.1 Corner Pulley K 1122 ................................................................53
8.9.2 Installation .............................................................................53
9. CYLINDER VALVE PRESSURE/LEVER ACTUATOR K62341 ................55
9.1 INSTALLATION..................................................................................56
10. PILOT GAS FLEXIBLE LOOPS K93433 and K93434 ..............................57
10.1 PILOT GAS VENT K24051 ................................................................57
10.2 PILOT GAS RIGID TUBING AND FITTINGS.....................................59
10.3 INSTALLATION..................................................................................61
11. TIME DELAY UNIT K23650.......................................................................62

v
11.1 INSTALLATION..................................................................................63
11.2 TESTING............................................................................................63
11.3 TIME DELAY BY-PASS VALVE K60736 ...........................................67
12. CO2 OPERATED PRESSURE SWITCH K60218.......................................69
12.1 INSTALLATION..................................................................................71
13. CO2 OPERATED PRESSURE TRIP K17554.............................................72
13.1 INSTALLATION..................................................................................73
14. CO2 DISCHARGE NOZZLES.....................................................................74
14.1 MULTIJET NOZZLE K61792 AND K61793........................................74
14.2 FLANGED MULTIJET NOZZLE K5814..............................................75
14.3 FLANGED NOZZLE DUCT ADAPTORS K61420A-D........................76
14.4 DUCT NOZZLE K13045.....................................................................77
14.5 FAN TYPE NOZZLE K6490 ...............................................................78
15. PNEUMATIC DETECTION - HEAT ACTUATED DEVICES ......................79
15.1 PNEUMATIC RATE OF RISE DETECTOR K18724 ..........................79
15.2 PNEUMATIC FIXED TEMPERATURE DETECTOR K18689.............80
15.3 PNEUMATIC CHECK UNIT K24412..................................................81
15.4 PNEUMATIC LOCK-OFF UNIT K24300 ............................................82
15.5 BELLOWS AND MICROSWITCH ASSY K20057 ..............................83
15.6 PNEUMATIC CAPILLARY TUBE, CONDUIT AND FITTINGS...........84
15.7 CO2 OPERATED SIREN K18307.......................................................85
16. ODORISER ASSEMBLY K62586..............................................................86
17. CO2 WARNING LABELS ...........................................................................87
PART 2 COMMISSIONING ................................................................................89
18. COMMISSIONING......................................................................................89
18.1 VISUAL CHECKS ..............................................................................89
18.2 MECHANICAL FUNCTION ................................................................90
18.2.1 General..................................................................................90
18.2.2 Manual Push-to Fire ..............................................................90
18.2.3 Pull Box .................................................................................90
18.2.4 Pneumatic System.................................................................91
18.2.5 Pressure/Lever Actuator and POD Valves ............................96
18.2.6 Pressure Trip.........................................................................96
18.2.7 Pressure Switch.....................................................................97
PART 3 MAINTENANCE....................................................................................98
19. MAINTENANCE.........................................................................................98
19.1 PRELIMINARY CHECKS...................................................................98

vi
19.2 COMPONENT FUNCTION TESTS....................................................99
19.2.1 General..................................................................................99
19.2.2 Control Head .........................................................................99
19.2.3 Pressure/Manual Release Heads and POD Valves.............100
19.2.4 Pressure Trip.......................................................................101
19.2.5 Pressure Switch...................................................................102
19.3 INSTRUCTIONS FOR COMMISSIONING THE SYSTEM AFTER ITS
OPERATION....................................................................................102
PART 4 TERMS AND CONDITIONS................................................................103
20. TERMS AND CONDITIONS.....................................................................103

vii
LIST OF ILLUSTRATIONS
Figure Page
Figure 1 CO2 Cylinder ................................................................................................4
Figure 2 Klem Cylinder Valves ...................................................................................5
Figure 3 Single Cylinder Racking ...............................................................................6
Figure 4 Single Row Cylinders ...................................................................................7
Figure 5 Additional Centre Racks for Two Rows of Cylinders ....................................9
Figure 6 CO2 Manifold Pipes ....................................................................................10
Figure 7 Manifold Brackets, Single Row...................................................................11
Figure 8 Manifold Brackets, Double Row .................................................................11
Figure 9 POD Valve System.....................................................................................17
Figure 10 ¾ to 2 inch POD Valves ...........................................................................18
Figure 11 Indicator Switch........................................................................................19
Figure 12 3 & 4 inch POD Valves.............................................................................20
Figure 13. 3 and 4 inch Companion Flange, Bolts and Gasket ................................22
Figure 14 Safety Outlets ..........................................................................................23
Figure 15 All CO2 Cylinders discharging to either space ..........................................24
Figure 16 Two Spaces Requiring differing CO2 cylinders .........................................25
Figure 17 Rigid Discharge Loop...............................................................................27
Figure 18 Flexible Discharge Loops.........................................................................28
Figure 19 System Actuator Assembly ......................................................................30
Figure 20 Nitrogen Pilot Gas Cylinder and Valves ...................................................31
Figure 21 Pressure Monitoring Switch......................................................................32
Figure 22 Control Head ............................................................................................33
Figure 23 Control Head with Switches .....................................................................34
Figure 24 Standard Mounting Bracket......................................................................35
Figure 25 Safety and Reset Pin................................................................................36
Figure 26 Control Head Mounting Bracket ...............................................................38
Figure 27 Control Head Actuating Devices...............................................................39
Figure 28 Manual Push-to-Fire Button .....................................................................40
Figure 29 Standard 24V d.c Solenoid.......................................................................41
Figure 30 Flameproof ATEX approved 24V d.c. Solenoid........................................42
Figure 31 Control Head and Solenoid Wiring ...........................................................45
Figure 32 Pneumatic Diaphragm Actuator ...............................................................47
Figure 33 Pneumatic Breather Vents .......................................................................48
Figure 34 Cable Release Assy.................................................................................49

viii
Figure 35 Cable Pull Ring Connection .....................................................................50
Figure 36 Curvature of Cable ...................................................................................51
Figure 37 Cable Release Assembly, Cover Removed .............................................51
Figure 38 Pull Box....................................................................................................52
Figure 39 Corner Pulley ...........................................................................................53
Figure 40 Cylinder Valve Pressure/Lever Actuator...................................................55
Figure 41 Pilot Gas Flexible Loops...........................................................................57
Figure 42 Pilot Gas Vent ..........................................................................................58
Figure 43 Pilot Gas Rigid Tubing and Fittings ..........................................................59
Figure 44 Single Cylinder Row Pilot Gas Operation.................................................61
Figure 45 Double Cylinder Row Pilot Gas Operation ...............................................61
Figure 46 Time Delay Unit........................................................................................62
Figure 47 Single Protected Space System...............................................................64
Figure 48 Two Protected Spaces System ................................................................65
Figure 49 Two Protected Spaces Requiring Different CO2 Quantities......................66
Figure 50 Time Delay By-Pass Valve.......................................................................67
Figure 51 Installation ................................................................................................68
Figure 52 CO2 Operated Pressure Switch ................................................................69
Figure 53 Pressure Trip............................................................................................72
Figure 54 Installation ................................................................................................73
Figure 55 Multijet Nozzle..........................................................................................74
Figure 56 Flanged Multijet Nozzle............................................................................75
Figure 57 Flanged Nozzle Duct Adaptor ..................................................................76
Figure 58 Duct Nozzle..............................................................................................77
Figure 59 Fan Type Nozzle ......................................................................................78
Figure 60 Pneumatic Rate of Rise Detector .............................................................79
Figure 61 Pneumatic Fixed Temperature Detector...................................................80
Figure 62 Pneumatic Check Unit..............................................................................81
Figure 63 Pneumatic Lock-Off Unit ..........................................................................82
Figure 64 Bellows and Microswitch Assembly..........................................................83
Figure 65 Pneumatic Capillary Tube, Conduit and Fittings ......................................84
Figure 66 CO2 Operated Siren..................................................................................85
Figure 67 Odoriser Assembly...................................................................................86
Figure 68 Odoriser Check Valve ..............................................................................86
Figure 69 Entrance Door Warning Label ..................................................................87
Figure 70 Manual Control Point Label......................................................................88
Figure 71 Manometer Test System ..........................................................................91

ix
LIST OF TABLES
Table Page
Table 1 CO2 Cylinder Specification............................................................................4
Table 2 Closed and open ended pipework section – High pressure systems..........12
Table 3a Open Ended Pipework................................................................................13
Table 3b Closed Section Pipework……………………………………………………… 13
Table 4 Pipe Support Spacing.................................................................................14
Table 5 Safety Clearances for Pipework .................................................................15

© K.F.P.S. Ltd November 2004 Manual No 59812-400
1
FOREWORD
Kidde Fire Protection recognises its responsibility to ensure that the products it manufactures are, as far
as is reasonably practical, without risk to the health and safety of the users. The following information
should be disseminated to all persons using such products.
The information is furnished in good faith based upon technical data and tests, which are believed to be
reliable. Products undergo rigorous quality control checks during manufacture to ensure that they
present no hazards in the use and application for which they are intended.
Technical data and literature which may assist customers in the discharge of their general duties are
available on request. Should you require further information on this context please contact our sales
office.
Nothing contained in this publication shall form part of any contract made between a customer and
It is of vital importance that the CO2 equipment should be correctly installed. The Installation Engineer
should become fully conversant with the contract files and all installation drawings before going to site.

2
1 GENERAL
1.1 Safety Precautions
Characteristics of Carbon Dioxide
Carbon Dioxide (CO2) at atmospheric pressure is a colourless, odourless and electrically non-conducting
inert gas which is almost 1.5 times as dense as air.
CO2 extinguishes fire by reducing the oxygen content of the atmosphere to a point where it will not support
combustion. Reducing the oxygen content from the normal 21% in air to 15% will extinguish most surface
fires, though for some materials a greater reduction is necessary. In some applications the cooling effect of
CO2 may assist extinction.
Hazards to personnel
Exposure to atmospheres containing about 5% CO2 leads to shortness of breath and slight headache. At
the 10% level, headache, visual disturbance, ringing in the ears (tinnitus) and tremor are followed by loss of
consciousness.
Fire extinguishing concentrations of CO2, which are normally in excess of 30%, especially near to the point
of discharge from total flooding or local application systems, carry a risk of almost immediate asphyxiation.
The gas is also more dense than air and will drift and accumulate in low spaces, such as cellars, pits and
floor voids, which may be difficult to ventilate effectively.
The rapid expansion of large quantities of CO2 results in a substantial localised cooling of the installation
and of the air surrounding the point of discharge. This can present a frostburn hazard.
Handling and storage of CO2 cylinders
Observe the following precautions to prevent accidental discharge of CO2:
On despatch, all cylinder and valve assemblies are fitted with transport caps which must not be removed
until after the cylinders have been securely restrained, store the transport caps for future use.
Never use the cylinder valve to turn or move the cylinder, this could cause damage or leakage: use a
transport trolley.
Never store cylinders in direct sunlight or in location where the cylinder temperature is likely to exceed
55°C.

3
Never depress the cylinder valve actuating pin as this action will open the valve and discharge its contents
causing the cylinder, unless securely restrained, to act as a projectile.
Never fit any release device to a cylinder valve until it has been secured in the cylinder rack and connected
to the discharge pipework.
Re-entry into a flooded area
Never enter an area after a CO2 discharge until it has been thoroughly ventilated to external atmosphere.
If it is necessary to enter an area containing CO2 always use self-contained Breathing Apparatus, never use
a filter or canister type mask. As an added precaution the person entering should be tethered by a manned
lifeline.
Dismantling and modifications
It is recommended that Kidde Fire Protection be notified of any intention to alter or extend the system or
areas protected in order that advice be given of any effect that this may have on the original design.
1.2 Preliminary checks
Check that all equipment has been delivered, any damaged equipment must be replace.
Check that the area(s) to be protected agree with the installation drawings.
Check the CO2 cylinder location for ease of access during maintenance; also safety. Check that the
ambient temperature of the cylinder location complies with the following limitations: -
Total flooding systems: -18 to 55°C.
Local Application flooding Systems: Minimum 0°C Maximum 46°C.

4
PART 1 INSTALLATION
2 CO2 CYLINDERS AND RACKING
2.1 CO2 Cylinders
CO2 is stored in solid drawn steel cylinders containing gas in liquid form equal to two thirds of its water
capacity. The pressure within the cylinder varies with changes in ambient temperature, increasing with
rising temperature. At 21°C the pressure is 58.6 bar.
The cylinder assembly comprises a cylinder, cylinder valve and rigid syphon tube which must ALWAYS be
installed in an upright position.
Figure 1 CO2 Cylinder
Table 1 CO2 Cylinder Specification
Part No Water
Capacity
(Litres)
Fill Weight
(kg)
Total Weight
(kg)
Dimension (mm)
‘A’ ‘B’
E7194-001 67.5 45 120 Approx 267 1515
K24069/FM 67.5 45 120 Approx 267 1531
K24338 34.0 22.6 81 Approx 229 1102
NOTE: All dimensions ‘B’ are ±10mm
Cylinder Specification: 1999/36/EC (TPED)
Material: Steel
Test Pressure: 250 bar
Fill Ratio: 0.661kg/litre
Standard Point Finish: Red

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