Tomco2 Fire Systems
8/16/10 Rev. 0
High Pressure CO2
Engineering, Installation and
Operation Manual
7619 Hamilton Avenue
Cincinnati, OH 45231
USA
(513) 729-3473 phone
(513) 729-3444 fax
Tomco2 Fire Systems
8/16/10 Rev. 0
TABLE OF CONTENTS
SECTION
1
2
3
4
5
DESCRIPTION
INTRODUCTION
SYSTEM COMPONENTS
SYSTEM DESIGN
INSTALLATION
OPERATION AND SERVICE
Tomco2 Fire Systems
Introduction
8/16/10 Rev. 0
SECTION 1
INTRODUCTION
Table of Contents
Paragraph
1-1
1-2
1-3
1-4
1-5
Subject
Purpose
Description
Properties of Carbon Dioxide
Quality of Carbon Dioxide
Safety
Tomco2 Fire Systems
Introduction
8/16/10 Rev. 0
SECTION 1
INTRODUCTION
1-1
PURPOSE
The intent of this manual is to provide the user with the information necessary to
adequately select, operate and maintain our high pressure CO2 fire suppression equipment
required to protect a specific hazard.
1-2
DESCRIPTION
A. A high pressure CO2 system is a specialized fire suppression system designed to
maintain the carbon dioxide supply at 70º F and 850 psig in strength alloy steel
cylinders. The cylinders contain the CO2 required to protect the largest single hazard
and any number of back-up discharges required by the authority having jurisdiction.
B. On large hazards where several cylinders are required, a manifold is used to connect
each cylinder by means of flexible hoses and check valves.
C. Cylinder valves control the CO2 flow to the hazard through properly sized pipe,
terminating in nozzles that apply the CO2. Flow rate is controlled by nozzle orifices as
well as pipe sizes. The cylinder master valves are electronically operated and the
slave valves are back pressure actuated. The master valves can be automatically
and/or manually operated.
D. Lock-Out Valves
A lock out shall be installed on all systems where carbon dioxide could migrate,
creating a hazard to personnel. The valves shall be supervised for both automatic and
manual systems unless specifically waived by the authority having jurisdiction.
Systems shall be locked out when persons not familiar with the systems and their
operation or when persons are present in locations where discharge of the system will
endanger them before they can proceed to a safe location within the time delay period.
E. The equipment is UL listed for an ambient temperature range of 0°F to 130°F (-18°C to
54°C) of the protected area. Any approved releasing control panel can provide
automatic actuation. Electric release stations provide manual release. The control
panel operates the alarm devices, provides shut-down of auxiliary equipment, and
supervises all circuits. The control panel also provides delays so alarms (audible and
visual) in the protected area can evacuate personnel before the CO2 discharges.
F. Pneumatic Time Delays
A pneumatic pre-discharge alarm and pneumatic time delay shall be provided for all
total flooding systems protecting normally occupied and occupiable enclosures where
the discharge will expose personnel to hazardous concentrations of carbon dioxide.
(NFPA 12, Paragraph 4.5.6, 2005 Edition) The pneumatic pre-discharge alarms and
pneumatic time delays are required on all new installations and it is mandated that all
existing systems be upgraded no later than December 31, 2008.
1-1
Tomco2 Fire Systems
1-3
Introduction
8/16/10 Rev. 0
PROPERTIES OF CARBON DIOXIDE
A. Under normal atmospheric temperature and pressures, carbon dioxide exists as a
colorless, odorless gas which is about 1.5 times heavier than air. Carbon dioxide will
not burn or support combustion and will not sustain life.
B. When confined within a suitable pressure vessel and depending on temperature and
pressure conditions, carbon dioxide can exist in any of three stages of matter; solid,
liquid and gas. The point at which all three states may exist is -69.9º F and 60.4 psig.
This is called the triple point. At temperatures and pressures lower than -69.9º F and
60.4 psig, carbon dioxide may be either a solid or gas, again depending on conditions.
Solid carbon dioxide (dry ice) at a temperature of -119.4º F and atmospheric pressure,
sublimes (transforms directly from a solid to a gas without the formation of liquid).
C. The critical point of carbon dioxide is 87.8º F and 1057.4 psig. At temperatures and
pressures greater than 87.8º F and 1057.4 psig, carbon dioxide liquid cannot exist.
D. At temperatures and pressures above -69.9º F and 60.4 psig, and below 87.8º F and
1057.4 psig, carbon dioxide liquid with overlying vapor may exist in equilibrium within a
closed vessel. Within this range, there is a definite relationship between temperature,
pressure and density.
E. The term “high pressure” is used to describe storage of carbon dioxide at ambient
temperature which is usually 850 psig @ 70° F.
1-2
Tomco2 Fire Systems
Introduction
8/16/10 Rev. 0
F.
2000
CRITICAL
TEMPERATURE
1000
900
800
700
600
500
LIQUID REGION
ABSOLUTE PRESSURE LBS./SQ. IN.
400
300
200
SOLID
REGION
VAPOR
100
90
80
70
TRIPLE POINT
60
50
40
30
20
ATMOSPHERIC PRESSURE
10
-120
-100
-80
-60
-40
-20
0
20
40
60
80
100
TEMPERATURE DEG F
For SI Units: 1 psi = 0.0689 bars: ºC = 5/9(ºF -32).
Figure 1-1 Variation of Pressure of Carbon Dioxide with
Change in Temperature (Constant Volume). Below the critical
temperature (87.8º F) (31º C), carbon dioxide in a closed
container is part liquid and part gas. Above the critical temperature
it is entirely gas.
Figure 1-1
Vapor Pressure Curve
1-3
120
140
Tomco2 Fire Systems
1-4
Introduction
8/16/10 Rev. 0
QUALITY OF CARBON DIOXIDE
Carbon dioxide used for initial supply and replenishment shall be of good commercial
grade, free of water and other contaminants that might cause container corrosion or
interfere with free discharge through nozzle orifices. Carbon dioxide obtained by
converting dry ice to liquid will not be satisfactory unless it is properly processed to remove
excess water and oil. The vapor phase shall be not less than 99.5 percent carbon dioxide
with no detectable off-taste or odor. The water content of the liquid phase shall be not
more than 0.01% by weight (-30º F [-34º C] dew point). Oil content shall be not more than
10 PPM by weight.
Caution:
Carbon Dioxide should not be used to protect the following hazards:
1. Chemical compounds such as gunpowder or cellulose nitrate which supply
their own oxygen.
2. Reactive materials such as sodium, potassium, magnesium, titanium,
zirconium, uranium and plutonium.
3. Metal hydrides.
4. Chemicals capable of undergoing auto thermal decomposition (hydrazine
and certain organic peroxides).
1-5
SAFETY
A. Pressure Hazard - The storage cylinders covered in this manual may contain
pressures over 850 psig (59 bar/5,861 kPa). Sudden release of this pressure may
cause personal injury by issuing cold gas or liquid, or by expelling parts during
servicing. Do not attempt any repairs on these cylinders until all pressure is released
and the contents have been allowed to vaporize to ensure no pressure buildup can
occur.
B. Extreme Cold - Cover Eyes and Exposed Skin - Accidental contact of the skin or eyes
with carbon dioxide may cause a freezing injury similar to frostbite. Protect your eyes
and cover your skin when handling the tank or transferring liquid, or in any instance
where the possibility of contact with liquid, cold pipes and cold gas may exist. Safety
goggles or a face shield should be worn when withdrawing liquid or gas. Long-sleeved
clothing and gloves that can be easily removed are recommended for skin protection.
C. Keep Equipment Well Ventilated - Although carbon dioxide is non-toxic and nonflammable, it can cause asphyxiation in a confined area without adequate ventilation.
An atmosphere of carbon dioxide does not contain enough oxygen for breathing and
will cause dizziness, unconsciousness, or even death. Carbon dioxide cannot be
detected by the human senses and will be inhaled normally as if it was air. Ensure
there is adequate ventilation where carbon dioxide is used and store tanks in a well
ventilated area.
D. Install Relief Valves in Liquid Lines - When installing piping make certain a suitable
safety relief valve is installed in each section of piping between valves. Trapped
liquefied gas will expand as it warms and may burst hoses or piping causing property
damage or injury.
1-4
Tomco2 Fire Systems
Operation And Service
8/16/10 Rev. 0
SECTION 2
SYSTEM COMPONENTS
Table of Contents
Paragraph
2-1
2-2
2-3
2-4
2-5
2-6
2-7
2-8
2-9
2-10
2-11
2-12
2-13
2-14
2-15
Subject
Cylinder Assemblies
Discharge Bends and Adapters
Cylinder Brackets
Check Valves
Bleeder Valves
Discharge Nozzles
Manual Actuator
Electric Actuation
Discharge Pressure Switch
Pressure Release Trip
Header Safety
Pressure Operated Siren
Cylinder Assemblies
Lock-Out Valves
Pneumatic Time Delay
Tomco2 Fire Systems
System Components
8/16/10 Rev. 0
SECTION 2
SYSTEM COMPONENTS
2-1
CYLINDER ASSEMBLIES
A basic cylinder assembly consists of a pressure vessel, a valve and siphon tube
assembly, and a charge of carbon dioxide.
A variety of cylinder sizes are available. They are all designed to hold pressurized
carbon dioxide in liquid form at atmospheric temperatures, corresponding to a normal
pressure of 850 psi at 70°F (58.6 bar at 21°C).
All cylinders are seamless. They are manufactured and tested in accordance with the
requirements of Department of Transportation and/or Transport Canada, Specification
3AA-1800 or higher. Larger cylinders having capacities of 35, 50, 75 and 100 pounds (15.9,
22.7, 34 and 45 kg) are made of steel. Small cylinders, used for special applications, have
capacities of 10 and 15 pounds (4.5 and 6.8 kg) and may be made of aluminum or steel,
depending on availability.
Except for special temperature conditions, all cylinders are filled to their specified weight
with liquid carbon dioxide. Cylinders are not partially filled.
The pressure inside the cylinder will vary as the temperature changes. In general, the
ambient storage temperature for standard cylinders used in local application systems
should be between 32°F and 120°F (0°C and 49°C). For standard cylinders used in total
flooding systems, the ambient storage temperature should be between 0°F and 130°F (18°C and 54°C).
Two cylinder valves are available: the SW-50M (master) and the SW-50S (slave). Both
are manufactured of brass with an optional nickel plated finish. The valves are of the force
differential type using a piston seal. The pressure above the piston is maintained at cylinder
pressure, but the area at the top of the piston is greater than the seal area. This results in a
higher force above the piston, which acts to keep the valve closed.
To open the valve, the pressure above the piston is vented and cylinder pressure raises
the piston to open the valve. A transport plug is attached to the valve by a chain attached to
the discharge port when the cylinder is disconnected from the discharge piping.
A pressure safety disc, incorporated into the cylinder valve, is designed to release
pressure should the cylinder be subjected to exceptionally high temperatures or other
abnormal conditions. The disc rupture point is in the range of 2,600 to 3,000 psi (182.7 to
206.8 bar). The safety disc nut is of a type that will relieve pressure without cylinder recoil.
The SW-50M master valve can be operated manually, by pressure actuator, with a
solenoid valve kit, or by direct back pressure from the discharge manifold. The SW-50S
slave valve can b operated only by direct back pressure from the discharge manifold.
Single cylinder systems simply require a single SW-50M with a manual actuator and/or
a solenoid valve. This is generally referred to as a master cylinder. For systems with two
cylinders interconnected, only one master valve is required. The other cylinder is operated
by a SW-50S slave valve. For systems with three or more cylinders interconnected, two
cylinders must act as masters and have solenoid and/or manual actuators arranged for
simultaneous operation.
A rigid siphon tube is used in all cylinders to ensure liquid discharge. All cylinders must
therefore be installed in a normal upright position.
2-1
Tomco2 Fire Systems
2-2
System Components
8/16/10 Rev. 0
DISCHARGE BENDS AND ADAPTERS
A discharge bend is used to connect the cylinder valve outlet to the system manifold
and discharge piping. This flexible hose allows for the temporary misalignment of the
cylinders on installation, and for ease of cylinder removal for maintenance. The cylinder
end of the hose has a swivel connection for ease of installation.
A discharge bend with a built-in check valve must be used when cylinders are
manifolded together. The check valve is locked onto the hose assembly and must not
separated from it. If a cylinder assembly is disconnected from the discharge bend, and if
the system operates while the cylinder is disconnected, the check valve will ensure that an
appreciable quantity of carbon dioxide will not discharge from the disconnected discharge
bend.
Flexible discharge bend adapter combinations are available for single cylinder systems
where a check valve is not required. When the discharge adapter is used without the
flexible bend, a union connection must be installed close to the cylinder for ease of
installation and maintenance.
It is important that neither the discharge bends nor the discharge adapter be mounted
onto the cylinder valve during transportation and storage. The transit plug must remain in
place on cylinder valve until the cylinder is installed and secure in its brackets.
2-3
CYLINDER BRACKETS
The cylinder can be arranged to be bracketed to a wall or to be free standing when no
wall is available. Straps for single cylinder wall mounting installations are available from
Tomco Fire Systems. Brackets for multiple wall mounted installations and frames for
multiple cylinder free standing installations are normally supplied by the installer, and
assembled on site to suit space available.
For installation of three or more cylinders, a variety of arrangements can be fabricated
by installer.
The single row, wall mounting arrangement is recommended for installations of up to
five cylinders.
Double row, free standing arrangements have the advantage (particularly for systems
using main and reserve cylinders, and for joint systems), that any cylinder can be removed
for recharging without disturbing the others. However, this arrangement requires two aisles
and considerably more space.
The double row, wall mounting arrangement is generally used when sufficient space is
not available for free standing arrangement or for single row wall mounting arrangement.
For marine applications, additional cylinder supports are required. Two straps or sets of
retainers must be used.
2-4 CHECK VALVES
A range of check valves are available. These are used to isolate the main cylinder
manifold from the interconnected reserve cylinder manifold. In the manifolds of joint
systems they are also used to prevent the discharge from activated cylinders causing
activation of the other cylinders in the bank.
2-5 BLEEDER VALVES
Bleeder valves are used in the manifolds of main and reserve banks of cylinders, as well
as in the manifolds of systems that have selector valves (joint systems). The bleeder valve
2-2
Tomco2 Fire Systems
System Components
8/16/10 Rev. 0
vents accidental check valve leakage (that could discharge the other bank or banks of
cylinders) from one bank to the other. The valve is normally open and closes when
manifold pressure reaches approximately 20 psi (1.4 bar) to prevent loss of CO2 under
normal discharge conditions. The pipe connection is 1/2" NPT.
2-6 DISCHARE NOZZLES
Two types of discharge nozzle are available: total flooding type and local application
type. Total flooding nozzles are used where an even distribution of gas is required
throughout and enclosure. Local application or directional nozzles are used where a
concentration of carbon dioxide is required on a particular surface or piece of equipment.
Nozzles are designed to discharge large volumes of carbon dioxide without freezing.
For local application use (when installed in accordance with their approvals), the velocity of
discharge from the nozzle is reduced to prevent agitation and splattering of hazardous
material which could spread the fire.
All nozzles have a drilled orifice. The nozzle orifice size will vary depending on the flow
and the location of the nozzle in the system. It is important that nozzles are installed exactly
as specified on the project drawings, otherwise system performance will be jeopardized.
The wall type and vent type nozzles are used exclusively for total flooding installations.
The S-Type nozzle may also be used for total flooding installations, however, its cost
normally restricts its use to local application installations. The S-Type nozzle may be fitted
to flanges to enable it to be mounted onto sheet metal equipment closures and ductwork. It
may also be supplied with a frangible disc to prevent clogging of the orifice. Special finishes
for nozzles are available and can be provided by special order to suit project requirements.
2-7 MANUAL ACTUATOR
A manual actuator is used to operate the carbon dioxide system manually and locally at
the cylinders. The actuator is screwed into a port on the top of the SW-50M cylinders valve.
When two master cylinders are required, the levers of the two actuators are joined together
with a connecting link for simultaneous operation.
The actuator has a hole in the side of the main body fitted with a blank plug. The hole
allows to actuator to be operated from an external pressure source. It is also used to
connect to the discharge from the solenoid valve (when used). The blank plug is removed
from the actuator only for these two purposes. Otherwise the plug must remain tightly
connected at all times.
The hand lever on the manual actuator can be operated from a remote location. This is
achieved be connecting 1/16” diameter stainless steel cable to the end of the lever, and
running the cable through 1/2" conduit or 3/8” pipe to a pull box using corner pulleys at
each change in cable direction.
Using a mechanical dual junction box, two remote pull boxes can be joined to operate
one master cylinder arrangement. Or, one remote pull box can be used to operate two
separate manual actuators.
2-8 ELECTRIC ACTUATOR
Electric actuation is achieved by using a solenoid valve kit. The solenoid valve is
normally closed device, closed when de-energized and open when energized. The
standard solenoid voltage is 24 VDC, but other voltages and special enclosures (including
explosion-proof) are available by special order. The standard electric connection is by a
DIN connector, and a cable assembly is available for ease of connection to field wiring.
2-3
Tomco2 Fire Systems
System Components
8/16/10 Rev. 0
The solenoid coil is designed and rated for continuous duty service. However, it is
recommended that the actuating circuit incorporate a shut-down device (e.g. a pressure
switch or time delay relay) to open the circuit when the cylinder is empty.
When the coil is energized for a long period of time, the solenoid enclosure becomes
hot. This is a safe operating temperature and will not damage the solenoid. Any excessive
heating will be indicated by smoke of burning coil insulation.
The solenoid valve connects directly to a special adapter on the SW-50M cylinder valve.
The discharge side of the solenoid valve is connected to the pressure port on the manual
actuator with supplied 3/16” braided hose. When de-energized, the solenoid valve opens
allowing pressure from above the main piston of the cylinder valve to operate the actuator
and open the valve.
The solenoid should be connected to a Listed control panel that is powered through a
separately fused circuit, and that also incorporates battery backup power.
2-9
DISCHARGE PRESSURE SWITCH
The pressure switch connects to the carbon dioxide discharge piping and operates when
the system discharges. The switch may be wired with contacts in the open or closed
position. Operation causes the electrical switch contacts to reverse position. Switches can
be used to confirm system discharge, to operate alarms, to shutdown motors, pumps, fans
and conveyors, to release magnetic door holders, etc., automatically when the system
discharges.
The switch may be mounted in any position, but preferred installation in with the
pressure connection (CO2 supply line) entering from the bottom. The switch enclosure is
rated for standard and weatherproof conditions. When the line load of the equipment to be
operated is greater than the switch rating, the switch should be used to break a relay
holding-coil circuit.
2-10 PRESSURE RELEASE TRIP
The pressure release trip can be used to release dampers, close fire doors, windows,
louvers, fuel supply valves, to open dump valves, etc., automatically when the system
discharges. The equipment to be operated must be weight or spring loaded, or be pivoted
off centre. The release trip is connected to a carbon dioxide discharge piping for operation
when the system discharges. Cable from the equipment to be controlled is looped over the
pressure release operating stem. When the trip is operated, the stem retracts and the cable
is released.
2-11 HEADER SAFTEY
This pressure relief device is installed in sections of closed piping such as between
selector valves and the cylinder manifold. It is a frangible disc assembly designed to
rupture if trapped CO2 expands and the line pressure exceeds 2,650 to 3,000 psi (182.7 to
206.8 bar). The body is made of brass and the pipe connection is 1/2" NPT.
2-12 PRESSURE OPERATED SIREN
This unit sounds an alarm by means of carbon dioxide pressure. It is connected t the
discharge piping of the system, or to a spate independent carbon dioxide cylinder.
Sirens should be located throughout the hazard area in order to ensure an audible
alarm will be heard on the activation and discharge of the carbon dioxide system. Due
consideration should be given to the normal background noise in the area.
2-4
Tomco2 Fire Systems
System Components
8/16/10 Rev. 0
The carbon dioxide system incorporates a delayed action device, the siren must be
arranged to operate at the same time that the delayed action device is initiated.
When connected to the carbon dioxide system piping, the alarm will cease when the gas
discharge had been completed. If it is desirable or necessary for the sirens to operate for a
longer period of time than will be allowed by the system discharge time, a separate
independent carbon dioxide cylinder must be used.
2-13 CYLINDER ASSEMBLIES
Carbon dioxide cylinders may be located inside or outside the protected space, although
it is preferable to locate them outside the space. When they are installed within the space
they protect, a remote manual control should be installed to ensure the system can be
actuated from a safe location outside the fire area.
The cylinders should be located to provide convenient access so that they can be
readily inspected and easily removed after use for recharging. They should not be installed
where that will be exposed to the weather elements or the direct rays of the sun. Cylinders
should not be installed where they will be subjected to temperatures of less than 0°F (18°C) or higher than 130°F (54°C), unless otherwise specified.
If cylinders are located in hazardous (explosion-proof) area, the cylinder solenoid should
be approved for such use, and the installation of all materials needs to be done in an
approved manner.
Cylinders should be installed in the normal upright position. All cylinders are provided
with a siphon tube.
.
2-14 LOCK-OUT VALVE ASSEMBLY
A lock-out valve should be provided with all systems where CO2 could migrate creating
a hazard to personnel. The valve should be located in the discharge piping between the
nozzles and supply in the fire suppression system. The valve is used to prevent accidental
or deliberate discharge when persons not familiar with the system are present in the
protected space. The valve shall be maintained in the open position. Closing this valve
takes the system out of service. The valve position should be continuously monitored at the
control panel and is equipped with a pad-locking device to lock the valve in the open or
closed position. Manually operated valves in the 1/2", 3/4", 1”, 1 1/4", 1 1/2" and 2” sizes
are the full port ball valve type. Each valve is equipped with a pad locking type handle and
supervisory switch is normally maintained in the fully open position.
2-15 PNUEMATIC TIME DELAY
A pneumatic time delay shall be provided for all total flooding systems protecting
normally occupied and occupiable enclosures and local application systems where the
CO2 discharge will expose personnel to hazardous concentrations.
The pneumatic time delay delays the discharge of CO2 for predetermined amount of
time. This extra time allows additional time for ventilation and equipment shutdown.
The time delay is installed between the master CO2 cylinders and the discharge
nozzles. The time delay has inlet port and outlet port, both with a 3/4" NPT connection. The
actual time delay period is per-set at the factory. Tomco Fire Systems offers both 30 and
60 second time delays.
The time delay will operate at temperatures from 0 to 130°F. Note: Delay times will vary
slightly with the ambient temperature.
The time delay is equipped with manual override lever. This lever allows the time delay
to be bypassed and allows the CO2 to discharge immediately.
2-5
High Pressure CO2 Fire Protection
SW-50 Cylinder Valve
2 in
(50 mm)
96060233
SW-50M Master Valve, Brass
96060286
SW-50M Master Valve, Nickel Plated
96060232
SW-50S Slave Valve, Brass
96060285
SW-50S Slave Valve, Nickel Plated
Top View
Solenoid
Actuator
Protection
Cap
Manual
Actuator
Port
Slave Piston
Cavity
Main Valve
Cavity
Vent
Discharge
Port
Vent
5 in
(127 mm)
Remove safety plugs from
valve only after securing
cylinder in cylinder bracket.
Safety
Relief
Side View
1inch
NPT Thread
1inch
NPT Thread
SW-50M
Master Valve
Minimum Burst Pressure
6,000 PSI (414 Bar)
Safety Relief Operating Pressure
2,650 to 3,000 PSI (182 to 207 Bar)
Equivalent Length
5 feet (1.5 m) of ½" Schedule 40 Black Pipe
Dimensions
5" (127 mm) high x 2" (50 mm) wide
Operating Temperature
0° F to 130° F (-18° C to 54° C)
Weight
3.5 lb. (1.6 kg)
7619 Hamilton Ave,
Cincinnati, Oh 45231
Page 1 of 1
SW-50S
Slave Valve
Telephone
+1 513 729-2473
Fax
+1 513 729-3444
Website
tomcofiresystems.com
51-0141-0997
Two Cylinder
Installation
H
2/3
H
1/4
H
Marine
Installation
7619 Hamilton Ave,
Cincinnati, Oh 45231
Industrial
Installation
Mounting bolts must be anchored into solid
structural members. Bolts must not be anchored into plaster or other facing materials.
Only the strap is supplied by inControl Systems. All other components and mounting
hardware is to be supplied by the installer to
suit site conditions.
Cylinder straps are intended to support floor
mounted cylinders against a solid wall.
Cylinder Mounting Strap
High Pressure CO2 Fire Protection
3/4
H
Telephone
+1 513 729-2473
6.73
7.00 (38 lb)
9.06 (50 lb)
9.25 (75 lb)
10.50 (100 lb)
96040332
96040146
96040147
96040309
96040148
Fax
+1 513 729-3444
Cylinder
dia.
Part
number
36" clear space
in front of cylinders
for maintenance
10.05
10.33
12.33
12.57
13.83
A
D
C
Back Channel
(unistrut or equal)
by installer,
as required
C
Website
tomcofiresystems.com
6.57
6.87
8.85
9.09
10.35
Dimensions
8.80
9.10
11.08
11.32
12.58
B
B
A
D
1.50
1.50
1.50
1.50
1.50
Page 1 of 1
51-0104-0400
High Pressure CO2 Fire Protection
Typical Single-Cylinder Installation
To Nozzles
Discharge Hose
with Check V alve
or Discharge Adapter
P/N 96060242
Junction Box
by Installer
Manual Actuator
P/N 96060235
Solenoid V alve Kit
P/N 96060322
To Electrical
Control
Electrical Connector
P/N 96110012
Cylinder Strap
Master Cylinder Assembly
7619 Hamilton Ave,
Cincinnati, Oh 45231
Page 1 of 1
Telephone
+1 513 729-2473
Fax
+1 513 729-3444
Website
tomcofiresystems.com
51-1050-0398
Cylinder Bracketry
Fabricated by Installer
Solenoid Valve Kit
P/N 96060322
Electrical Connector
P/N 96110012
Assembly
7619 Hamilton Ave,
Cincinnati, Oh 45231
Master Cylinder
Assembly
To Nozzles
Fax
+1 513 729-3444
Assembly
Slave Cylinder
SW-50S
Manifold by Installer
Slave Cylinder Slave Cylinder
Assembly
Assembl
Telephone
+1 513 729-2473
Assembly
Slave Cylinder
SW-50S
Manual Actuator
P/N 96060235
Master Cylinder
SW-50M
Junction Box
by Installer
To
Electrical Control
Typical Assembly, 100 lb. Cylinders
High Pressure CO2 Fire Protection
39"
Website
tomcofiresystems.com
58"
Discharge Bend
with Check Valve
P/N 96060237
Optional
Pressure Switch
Page 1 of 1
51-51-1052-0997
High Pressure CO2 Fire Protection
Typical Two-Cylinder Installation
To
Electrical Control
Electrical Connector
P/N 96110012
To Nozzles
Discharge Bend
with Check Valve
P/N 96060237
Junction Box
by Installer
Manual Actuator
P/N 96060235
Solenoid Valve kit
P/N 96060322
Slave
Cylinder Bracketry
Fabricated by Installer
Height
of Cylinder
Master Cylinder Assembly
2/3
Height
of Cylinder
Slave Cylinder Assembly
7619 Hamilton Ave,
Cincinnati, Oh 45231
Page 1 of 1
Telephone
+1 513 729-2473
Fax
+1 513 729-3444
Website
tomcofiresystems.com
51-1051-0501
Cylinder Bracketry
Fabricated by Installer
Solenoid Valve Kit
P/N 96060322
Slave Cylinder
Assembly
Fax
+1 513 729-3444
Slave Cylinder
Assembly
Reserve
Master Cylinder
Assembly
To Nozzles
Telephone
+1 513 729-2473
Manifold by Installer
7619 Hamilton Ave,
Cincinnati, Oh 45231
Main
Master Cylinder
Assembly
Manual Actuator
P/N 96060235
Electrical Connector
P/N 96110012
Junction Box
by Installer
Changeover Switch
To
Electrical Control
39"
Typical Main and Reserve Cylinder Installation
High Pressure CO2 Fire Protection
58"
Website
tomcofiresystems.com
Check Va lve
½" P/N 96060140
3/4" P/N 96060328
1" P/N 96060327
Page 1 of 1
51-51-1053-1097
Discharge Bend
with Check Valve
P/N 96060237
Optional
Pressure Switch
P/N 06-0247
High Pressure CO2 Fire Protection
Manual/Pressure Actuator
Part Number: 96060235 (Brass)
96060235 (Nickel Plated)
90º to operate
3 1/8 in
(79 mm)
5 1/4 in
(133 mm)
1/8" NPT hole with plug.
This plug is to be removed
only to install a pressure
source.
2 9/16 in
(65 mm)
Locking Nut.
Unscrew 1/4 turn
to orientate body.
SW-50 Discharge Valve
0.14 in
(3.6 mm)
Connecting
Link Assembly
96060344 (Brass)
Ensure piston is retracted
before assembling to valve.
Manual/Pressure
Actuator
1. Install actuator only after cylinders have been secured in their
brackets.
2. Before connecting actuator to cylinder valve, ensure:
a) (a) The pull pin is installed and secured with a seal.
b) (b) The piston is retracted as indicated.
SW50M
3. Install the actuator to the cylinder valve, hand tighten.
4. Minimum pressure required for pressure operation:
For 850 psi cylinder pressure (70º):
260 psi
For 2,280 psi cylinder pressure (130º):
665 psi
Connecting link used for simultaneous operation of
two cylinder valves. Also used for remote manual cable
operation, non-tension type.
7619 Hamilton Ave,
Cincinnati, Oh 45231
Page 1 of 1
5. When a solenoid actuator is used, discharge from solenoid valve
must be connected to the pressure port of the manual actuator.
Telephone
+1 513 729-2473
Fax
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Website
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51-0142-0997
High Pressure CO2 Fire Protection
Solenoid Actuator
DIN Connector
Tighten coupling
nut securely
3/16" flexible hose.
Connect to manual
actuator.
Tighten after
connecting
actuator to valve
SW-50M
Cylinder Valve
Electrical Rating: 24 vdc, 10 watts.
Part Number: 96060322
Important
1. The carbon dioxide cylinder assembly must be restrained in its bracket and discharge piping connected
before solenoid actuator is connected to or disconnected from the cylinder valve.
2.
The discharge from the solenoid valve must be connected to the manual actuator with the 3/16 inch flexible
hose provided.
Notes
1. The solenoid valve is normally closed. It opens when energized.
2.
Solenoid enclosure is a general purpose type. Drip proof, raintight and explosion-proof enclosures are available by special order.
3.
Standard voltage is 24 vdc. Other voltages are available by special order.
4.
The solenoid valve is designed and rated for continuous duty service.
5.
Operating temperature: 0 to 130 °F (-18 to 54 °C).
7619 Hamilton Ave,
Cincinnati, Oh 45231
Page 1 of 1
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51-0143-0997
High Pressure CO2 Fire Protection
Flexible Discharge Bends
½" NPT Male solid
to Manifold
½" NPT Male solid
to Manifold
Bend Assembly
22" overall Length
Bend Assembly
22" overall Length
Swivel
Swivel
1-1/16" - 12 UN
Valve Discharge Port
Check Valve
Discharge
Adapter P/N 96040148
Discharge Bend
with Adaptor
P̀/N 96060242
Discharge Bend
& Check Valve
P/N 96060237
Use
•
The discharge bend and check valve are supplied locked
together as a single unit.
•
•
The discharge bend and check valve assembly must be used
whenever cylinders are manifolded together.
The discharge bend and adaptor assembly may be used for
single cylinder systems.
Hose Specification
Hose Type
SAE 100R1 Type AT
Minimum Burst Pressure
5,000 PSI
Minimum Bend Radius
9.5 Inches
Equivalent Length, Discharge
Bend and Check Valve
7.3 Feet (2.22 m) Of 1/2" Std
Black Pipe.
Installation
•
Cylinders and manifold must be installed securely before the
discharge bends are installed.
•
Apply Teflon tape (pipe sealant) to the solid male 1/2" NPT
pipe thread on then end of the hose.
•
Screw the solid male 1/2" NPT end of the discharge bend into
the manifold, wrench tight.
•
Remove the safety shipping plug from the discharge port of
the SW-50 cylinder valve and install the swivel end of the
discharge bend assembly into the discharge port of the valve,
wrench tight.
7619 Hamilton Ave,
Cincinnati, Oh 45231
Page 1 of 1
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51-0144-0997
CATALOG
NUMBER
C.1.32.01
PNEUMATIC
TIME DELAY
Architect and Engineer Specification
Marine Suppression System
P/N C70-235 (30 sec. delay)
P/N C70-237 (60 sec. delay)
UL - Ex 4447
ULC - CEx 1312
FM - 3002238
USCG - 162.161/2/0 (HFC-227ea)
USCG - 162.038/12/0 (CO 2)
3 1/2" MAX
(89 mm)
2"
(51 mm)
22 1/4"
(565 mm)
17"
6"
(152 mm)
(432 mm)
9/32" DIA
(7 mm)
TYP. 4 PLCS.
5 1/2"
(140 mm)
4 1/4"
(108 mm)
INSTALLATION
DESCRIPTION
The pneumatic time delay delays the discharge of CO
for
2
a predetermined amount of time. This extra time allows personnel to get out of the discharge area. It also allows additional time for ventilation and equipment shutdown.
The pneumatic time delay is installed onto the discharge
piping of the manifold. The valve body has a 3/4" NPT
(20mm) threaded inlet and outlet for the piping connection.
It is recommended that a union be placed on either side of
the time delay for ease of removal.
The time delay is installed between the master CO
cylin2
ders and the discharge nozzles. The time delay has an inlet
port and an outlet port, both with a ¾" NPT connection. The
actual time delay period is pre-set at the factory. Tomco Fire
Systems offers both 30 and 60 second time delays.
In a CO 2 system the pneumatic time delay must be placed
after the Master cylinder(s) and before the slave cylinder(s)
connection(s) in the manifold. Refer to the typical arrangement drawings for installation configuration.
The time delay will operate at temperatures from 0 to 130° F.
Note: Delay times will vary slightly with the ambient temperature.
Dimensions:
5 1/2" x 5 7/8" x 23 3/8"
(139.7 x 149.2 x 593.7 mm)
Materials:
Time Delay - Brass
Override lever - Stainless Steel
Paint - Red gloss enamel
The time delay is equipped with a manual override lever.
This lever allows the time delay to be bypassed and allows
the CO 2 to discharge immediately.
SPECIFICATIONS
July, 2002
Revised Issue
704 S. 10th Street • P.O. Box 610 • Blue Springs, Missouri 64013-0610 U.S.A. • (816) 229-3405 • Fax (816) 229-0314 •
www.fike.com
High Pressure CO2 Fire Protection
Half-inch Header Safety
7/8" Hex
Safety Nut
Safety Disc
1/2" N
Safety Washer
Body
Bursting Pressure
2650 to 3000 PSI
Part Number: 96060276
7619 Hamilton Ave,
Cincinnati, Oh 45231
Page 1 of 1
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51-0156-0200
High Pressure CO2 Fire Protection
Selector Valves
¼" — 18 NPT
Pilot pressure outlet
Seal Retainer
Rings
Piston Seals
Nut
Piston: Brass, ASTM B16
Alloy UNS C36000
O-ring
Top Cap: Forged
Brass, ASTM A124
¼" — 18 NPT
Pilot pressure outlet
Pushrod
416 SST
Disc Nut
Pipe
Flow
Seat Disc
Body: Leaded red
brass, ASTM 4A
(85-5-5)
Bottom Cap:
Cast brass
Disc Holder:
Brass, ASTM B16
Alloy UNS C36000
Spring
Description
Ordering Information
Selector or directional valves allow the use of a single group
of cylinders to protect multiple areas or hazards. These valves
act as blocking devices directing the flow of CO2 to the protected space. Valve sizes range from ½" (13 mm) to 4" (102
mm) outlet sizes.
Valves are provided with a screwed inlet and outlet connection. 3" and 4" valves have a flanged connection on both.
7619 Hamilton Ave,
Cincinnati, Oh 45231
Page 1 of 1
O-ring
9630610047
9630610048
9610610371
9610610369
9610610370
9610610733
9610610734
9620480482
96060347
Telephone
+1 513 729-2473
Selector Valve, ½ inch (13 mm), screwed
Selector Valve, ¾ inch (19 mm), screwed
Selector Valve, 1 inch (25 mm), screwed
Selector Valve, 1½ inch (38 mm), screwed
Selector Valve, 2 inch (51 mm), screwed
Selector Valve, 3 inch (76 mm), flanged
Selector Valve, 4 inch (102 mm), flanged
Actuation Kit for Selector Valves with manual actuation.
Selector/Stop Valve, ½-¾" brass, R1 type
Fax
+1 513 729-3444
Website
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51-0111-0109
A
'L'
2
2
7619 Hamilton Ave,
Cincinnati, Oh 45231
1½
1½
1¼
1
1¼
1
1¼
1
¾
¾
5.82
4.55
4.13
3.75
3.40
3.38
Length
L
(inches)
PORT 'B'
Telephone
+1 513 729-2473
2½
2
1½
¾
½
½
Port B
(OUT)
NPT
Port A
(IN)
NPT
A
'W'
Nominal Size
(inches)
In-line Check Valves
High Pressure CO2 Fire Protection
Part
No.
96060323
96060325
96060326
96060327
96060328
96060140
Fax
+1 513 729-3444
3.63
3.0
2.5
2.0
1.63
1.50
Dimension W
(inches) A/F
SECTION A-A
Website
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Page 1 of 1
51-0134-0899
PORT 'A'
High Pressure CO2 Fire Protection
Pressure Operated Switch
Rating:
Operated Position
Moisture-proof
joint
Pressure Switch, Part No. 96060247
Double pole, double throw
Switch box
Reset Plunger
(raised position
indicates the
switch has
operated.
15 Amps, 120 Vac per pole
8 amps, 240 Vac per pole
1 HP, 120 Vac, 5 phase
Name Plate
Finish: Cadmium plated weatherproof enclosure
The pressure connection of the switch can
be connected to the discharge piping of any
cylinder in the system, or to the nitrogen
actuation tubing, if used.
Togle switch in
normal "standby"
position.
2 1/4 in
Pressure switches can be used to shut down
motors, pumps, fans, or operate alarms, release
doors, or provide confirmation of extinguishment
system operation, etc. automatically when the
extinguishing system discharges.
Piston
Cover Plate
1/4" NPT
(Pressure
connection)
1 1/4 in
For ½" Electric
conduit
1 3/4 in
Mounting and application
The switch may be mounted in any position, but the
preferred installation is with the pressure connection (gas
supply line) entering from the bottom.
Pipe to
nozzles
Installation can be made using 1/4" steel pipe and fittings.
Alternately, 1/4" or 3/16" x .032" wall soft copper tubing
with swagelock or equal fittings can be used.
Typical installation
using copper tubing
Note: When the line load is greater than the switch rating,
the switch should be used to break a relay holding coil
circuit (relay supplied by others).
Testing
Tube x N.I.P. Fitting
To test the circuits and to ensure auxiliary functions operate
correctly:
Either..
1.
If additional switches
or release trips are required,
install Tee and branch to
other units.
Disconnect the union at the pressure connection, insert
a small rod into the pressure connection of the cover
plate, and push against the piston to trip the switch.
Push the plunger down to reset the switch.
Or...
2.
Remove the four cover screws and swing the cover
away from the switch box. Manually operate the
interior toggle switch. After testing, ensure the toggle is
mounted in the normal standby position, then reinstall
the cover plate.
3/16" or 1/4" o.d.
x 0.32" wall tube
Tube x N.I.P. Fitting
Pipe from
cylinders
7619 Hamilton Ave,
Cincinnati, Oh 45231
Page 1 of 1
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51-0102-0304
High Pressure CO2 Fire Protection
Bleeder Valve
7/8" Hex
Vent
2-1/2"
1/2" NPT
Part no. 96040343
This bleeder valve is installed in main and reserve cylinder manifolds to vent accidental check valve leakage during discharge of one cylinder bank. If unvented,
accumulated leakage pressure could cause actuation of the other cylinder bank.
The valve closes when manifold pressure reaches approximately 20 PSIG to
prevent agent loss under normal discharge conditions.
7619 Hamilton Ave,
Cincinnati, Oh 45231
Page 1 of 1
Telephone
+1 513 729-2473
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51-0168-0403
1/2” - 2” Lock-out Valve
The lock-out valve is a manually operated valve used to inhibit the discharge of CO2 into an entire system or specific area of a system. The valves are rated to a working pressure of 2,200psi WOG. The
valve is equipped with a supervisory switch for remote monitoring and a locking device to pad lock the
valve in the open or closed position.
Material:
Body:
Ball/Stem:
Seats:
Carbon Steel
Stainless Steel
RTFE
Switch Rating:
Housing:
Contacts:
Approval:
NEMA 4
10a 24vDc/120vac/250vac
FM Approvals
FM Approvals has not verified the NEMA rating of the housing.
A
B
POSITION
INDICATOR
3/4" [19] NPT CONDUIT OPENING
D
E
F
LOCKING DEVICE
C
Refer to next page for dimensional information
Tomco Fire Systems
7619 Hamilton Avenue
Cincinnati, OH 45231
Equipment Data Sheet 990920
Rev. 0 5/06
1/2” - 2” Lock-out Valve
Size
Part
Number
A
B
C
D
E
F
Weight
1/2”
990920
7 5/8”
(194)
6 3/8”
(162)
3”
(76)
10 1/2”
(267)
11 5/8”
(296)
6 1/2”
(165)
5.5 lbs
2.5 kg
3/4”
990921
7 5/8”
(194)
6 3/8”
(162)
3 3/8”
(86)
10 3/4”
(273)
11 15/16”
(303)
6 1/2”
(165)
7 lbs
3.2 kg
1”
990922
7 5/8”
(194)
6 3/8”
(162)
4”
(102)
11 1/4”
(286)
12 11/16”
(322)
9 7/8”
(251)
8.5 lbs
3.9 kg
1 1/4” 990923
7 5/8”
(194)
6 3/8”
(162)
4 3/8”
(111)
11 7/16”
(291)
13 3/16”
(335)
9 7/8”
(251)
11 lbs
5 kg
1 1/2” 990924
7 5/8”
(194)
6 3/8”
(162)
5”
(127)
11 3/4”
(299)
13 5/8”
(346)
10 7/16”
(265)
14 lbs
6.4 kg
7 5/8”
(194)
6 3/8”
(162)
5 3/4”
(146)
12 1/8”
(308)
14 9/16”
(370)
10 7/16”
(265)
21 lbs
9.5 kg
2”
990925
RED
BLUE
YELLOW
RED
BLUE
YELLOW
N.O.
N.C.
LOWER/CLOSE
COM.
N.O.
N.C.
UPPER/OPEN
COM.
CAMS
Switch Configuration
Tomco Fire Systems
7619 Hamilton Avenue
Cincinnati, OH 45231
Equipment Data Sheet 990900
Rev. 0 5/06
High Pressure CO2 Fire Protection
Half inch Wall Nozzle for Total Flooding Applications
Nozzle orfice
sized to suits
design requirement
1.75
7/8 AF
1/2" NPT
Part Number: 96060237
Part Number: 96060237
7619 Hamilton Ave,
Cincinnati, Oh 45231
Page 1 of 1
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51-0145-0899
High Pressure CO2 Fire Protection
Pneumatic Siren
Decibel Rating:
CO2 Consumption:
Materials:
Housing:
Wheel:
Part Number:
Approval:
90 dBa @ 10' [3.05m]
12lbs/min [5.5 kg/min]
Brass
Stainless Steel
990979
FM Approvals
7619 Hamilton Ave,
Cincinnati, Oh 45231
Page 1 of 1
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51-0152-0997
High Pressure CO2 Fire Protection
Pressure Release Trip
Re lease Tr ip, P art No. 96060246
Body material: Cast brass
1 1/2"
25/32"
3 1/2"
Piston
Spring
3 1/8"
Stem
Vent with
rubber bung
1/4" NPT pressure connection
2 mounting holes
(3/8" dia.)
Notes
These units are used to release dampers,
doors, windows, louvres, to open dump
valves, and to close fuel supply valves, etc.
automatically when agent discharges.
Ty pical Connectio n
Re lease T rip
to Discharge Piping
The equipment to be operated must be weight
or spring loaded, or be pivoted off-centre.
The pressure connection of the trip can be
connected to the discharge piping of any
cylinder in the system, to the rid valve pilot
tubing, or to the nitrogen actuation tubing.
Tube X M.I.P . Fitting
The maximum load that can be hung on the
piston stem is 76 lb. (34 kg).
Connection can be made in 1/4" steel pipe,
1/4" or 3/16" x .032" wall soft copper tube.
Swagelok, Gyrolok, or similar fittings are
recommended for tube connections.
Optional
Anti-vibration
Bracket
If additional release trips or pressure switches
are required, install branch tees to suit.
Extinguishing
agent suppl y
To device operated
or released
7619 Hamilton Ave,
Cincinnati, Oh 45231
Page 1 of 1
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+1 513 729-2473
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51-0100-0304
High Pressure CO2 Fire Protection
Remote Manual Control Application
ax.
30° m
9" min. clear
(typical)
Connecting
Link
Cable Clamp
Conduit Bracket
& Fitting
90° Corner Pulley
1/16" dia.Stainless
Steel Cable
To Pull Box
Lever-operated Actuator
Conduit Bracket
& Fitting
To Cylinder Valve
Actuator
½" Conduit
or 3/8" Pipe
Single
Actuation
from two
Pull Boxes
Installation N
Notes
1. Run cable in 1/2" EMT conduit or 3/8" diameter pipe.
2. Install a corner pulley at each change in direction of cable.
for installa3. Covers of corner pulleys must be accessible after installation to allow removal
re
tion of cable.
FOR FIRE
FOR FIRE
OPEN DOOR
PULL HANDLE HARD
OPEN DOOR
PULL HANDLE HARD
4. Remote manual pull box should be installed three to fieve feet above flooor level in a readily
accessible location, and in the main egress from the protected space.
Pull Boxes
5. Ensure space in front of pull box will allow a straight pull of approximately nine inches.
Alternatively, actuation of two
separate devices (i.e.: cylinder
valve and selector valve) from
a single pull box.
6. Before starting to install the cable, ensure the safety pin is installed in the
th actuator(s). Remove the safety pin after completion of cable installation.
7. Maximum length of 1/16" stainless steel cable that can be installed is 500
50 feet.
8. Maximum number of pulleys that can be used:
a) on a single run is 15.
b) on a double run arrangement is 18, with a maximum of nine on any one leg.
7619 Hamilton Ave,
Cincinnati, Oh 45231
Page 1 of 1
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Website
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51-0108-0304
High Pressure CO2 Fire Protection
Remote Manual Control Components
90 º Corner Pulley
Pa rt No. 96060245
Conduit Brackets
4"
1"
2 11/16"
1 3/4"
2"
7/8"
3/8" diameter
mounting holes
Both holes
threaded for
3/8" pipe
"A"
(See table)
1 1/8"
Cable Clamp
Pa rt No. 96060012
3/8"
3/4"
1/2"
Dual Junction
Pa rt No. 96060256
Conduit Bracket
Dimension "A"
Used on...
96060257
1 3/4"
Small cylinders up to 20 lbs.
96060248
2 1/2"
Large cylinders more than 50 lbs.
Two socket
set- screws
2
1/4
3/8" diameter mounting holes
3
3/8"
Direction of pull
(see note)
9" (min.)
Cover
fastening
screws
1" (max.)
16 1/2"
Note: to pull in the opposite direction, reverse the two boxed dimensions.
Latch T ype Pull Box
Pa rt No. 96060259
Two 3/16" diameter
countersunk
mounting
holes
3/8" pipe
thread
Base of pull box
wall mounted
Lead and wire seal broken
when catch is opened
15/16"
diam .
2
Pull
handl e
FOR
FO
OR FIRE
FIIRE
OPEN
OP
PEN
EN DOOR
DOOR
PU
ULL HANDLE
HANDL
DLE HARD
HARD
D
PULL
4 1/8"
1-7/16"
7 /8 "
Providete
adequna ce
cleara r to
for doofully
open
Catch
4 3/16"
1/2"
7619 Hamilton Ave,
Cincinnati, Oh 45231
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51-0109-0304
High Pressure CO2 Fire Protection
S-Type Discharge Nozzle
1/2" NPT
Nozzle assy
P/N 96060291
Performance Data
Flange set
P/N 96060353
Orifice code
stamped here
Height
ft.
Flow Rate
(lb per min.)
Area of
Coverage
(sq. ft.)
1
16
5.0
2
24
7.0
3
32
8.7
4
41
10.7
5
49
12.6
6
57
14.5
7
66
15.0
8
74
15.0
Enclosure
Nozzles up to and including #5 orifice are equipped with
strainers.
Materials:
Installation
without seal
Installation with
seal in place
horn - steel ni pltd
insert & body - brass
flanges - steel ni pltd
Flange set consists of two flanges, seal, 3 nuts, bolts 7
washers. Ordered as a set.
5/16 cap screw
5/16 nut
Installation
5/16 lockwasher
Seal
P/N
96040504
flanges
Installation
with seal
without enclosure
(To be replaced
after each
discharge)
7619 Hamilton Ave,
Cincinnati, Oh 45231
Page 1 of 1
Telephone
+1 513 729-2473
1.
Cut a 3-5/8" dia. Hote in side of enclosure where
shown on system drawing. Drill three 3/8" holes for
cap screws using a clamping flange as a template.
2.
If hazard is totally enclosed (i.e. In an air duct), cut a
hand hole adjacent to nozzle for access for nut and bolt
fixing. (Cover hand hole after nozzle installation.)
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Website
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51-0146-0202
High Pressure CO2 Fire Protection
Vent Nozzle
1-1/8 AF
1/2" NPT
1.69in
1/2" NPT
Nozzle orfice
sized to suit
design requirements
MATERIAL: BRASS
Part Number: 96060360
7619 Hamilton Ave,
Cincinnati, Oh 45231
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51-0169-0203
High Pressure CO2 Fire Protection
Test Unit, 24 VDC Solenoid Valve
Light Adapter
LED
Attach connector cable here.
LED will light when solenoid
circuit is activated.
This unit is insensitive to polarity and is
equipped with VDR protection against overvoltages when switching off.
Dummy Solenoid Coil
7619 Hamilton Ave,
Cincinnati, Oh 45231
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51-0135-1099
1-5/8”
Ref
Double Bracket
Marine Installations
36"
(91cm )
Back beam (2)
96050016-XX
7619 Hamilton Ave,
Cincinnati, Oh 45231
Section A- A
Telephone
+1 513 729-2473
Anchor
bolts
to be
anchored
into solid
structure
(by others)
10.0
Ref
12
Ctrs Ref
Showing the arrangement for
an odd number of cylinders
A
A
Washer , 96020048
Lockwasher , 96020084
Nut, 96020047
Note:
Install captive nuts in back beam
before beam is fastened to wall
Captive nut
96020085
15”
(38 cm )
Single Bracket
Standard Industrial Installations
36"
(91cm )
2. 7
Ref
3/8" anchor bolts by others
Position 12” to 24” apart
avoiding contact with cylinders
3/8" threaded rod
14-1/2” long
96040469,, as
a req’d
100 lb. CO2
Cylinder
Fax
+1 513 729-3444
Typical wall fastening
Page 1 of 1
51-51-1054-1097
12
0
5
4
9
15
19
19
4
Part no. for the complete module is
51-1055-XX, where XX represents
the total no. of cylinders.
5.
Hardware required for two bank set-up
5
6
7
8
9
10
11
1
0
1
0
1
0
1
1
2
2
3
3
4
4
4
4
4
4
4
4
4
6
6
7
7
8
8
9
5
6
8
9
11
12
14
9
10
12
13
15
16
18
9
10
12
13
15
16
18
4
4
4
4
4
4
4
Design is based upon the use of
1-5/8” technistrut beams and components, or similar.
XX of the part no. for the front beam
indicates the number of cylinders
contained by the beam.
XX of the part no. for the two back
beams indicates the number of cylinders between them.
See 51-1054 for single bank.
4.
3.
2.
1.
Notes
Website
tomcofiresystems.com
4
0
1
4
5
3
7
7
4
Steel angle, 96050019
Cap screw, 96020065
Washer, 96020048
Lockwasher, 96020084
Captive nut, 96060085
Total no. of cylinders
Rod, 14-1/2", 96040469
Rod, 26-1/2", 96040470
Angle, 96050019
Captive nut, 96020085
Plain nut, 96020047
Plain washer, 96020048
Lockwasher, 96020084
Cap screw, 96020065
Front beam ,
96050018-XX
to suit the
no. of cyl in
front row
3/8"
threaded rod
26-1/2” long,
96040470
11.0
Ref
Typical Bracketing, Double Bank 100 lb. Cylinders
High Pressure CO2 Fire Protection
10 lb CO2 Cylinder
(or size to suit)
Discharge
Adapter
P/N 9604299
Standard
Pipe Union
Actuator
P/N 96060235
Sirens
in protected
area
Master
Actuator
7619 Hamilton Ave,
Cincinnati, Oh 45231
Solenoid
1/8" pipe
or 3/16" copper tube
Pressure Switch
if required
Telephone
+1 513 729-2473
Master
Time Delay
if required
P/N 96060345
Slave
3/4" NPT
Fax
+1 513 729-3444
Slave
Page 1 of 1
51-51-1064-0402
To Nozzles
© Copyright 2008 inControl Systems and Automation. All rights reserved
Website
tomcofiresystems.com
3/4" NPT
Actuator
if R equired
P/N 96060348
Stop V alve
if required
P/N 96060347
Adapter
if R equired
P/N 96040499
Typical Installation with Gas Operated Sirens
High Pressure CO2 Fire Protection
7619 Hamilton Ave,
Cincinnati, Oh 45231
Master
Cylinder
Assembly
Slave
Cylinder
Assembly
Slave
Cylinder
Assembly
Slave
Cylinder
Assembly
Slave
Cylinder
Assembly
Master
Cylinder
Assembly
Master
Cylinder
Assembly
Main CO2 Supply
Master
Slave
Slave
Slave
Slave
Master
Zone 2
Master
Change - Over Switch
P/N 96060235
Zone
select
Zone 1
Slave
Cylinder
Assembly
Slave
Slave
Cylinder
Assembly
Slave
Zone 3
Telephone
+1 513 729-2473
Pressure Switch
P/N 990119
(optional )
Slave
Slave
Cylinder
Assembly
Fax
+1 513 729-3444
Slave
Cylinder
Assembly
Slave
Check Valve
Detail 'A'
Selector
Solenoid
Valve
Actuation Kit
P/N 96060335
Website
tomcofiresystems.com
Page 1 of 1
51-51-1059-1001
Manifold Bleed Valve
P/N 96060343
See also Data Sheet
No. 51-1052
Manifold Header Safety
P/N 96060276
Selector Va lve
see detail ‘A’ below
Reserve CO2 Supply
Master
Cylinder
Assembly
Master
Typical Joint System with Main and Reserve Cylinders
High Pressure CO2 Fire Protection
High Pressure CO2 Fire Protection
CO2 Pressure/Temperature Curve
g
ng
lin ing ng
Filli
ng
Fil Fill Filli
%
5
Filli
6
%
%
%
%
5
8
0
4
8
6
6
5 6
5
180
170
160
150
140
Temperature: Degrees Fahrenheit
130
120
110
100
90
80
70
60
50
40
30
20
10
0
-10
-20
-30
-40
0
200
400
600
800
1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000 3200 3400 3600 3800
Pressure: Lbs. per Square Inch
This curve shows the pressure in carbon dioxide cylinders at various temperatures when filled to a percentage of their water capacity.
In general, cylinders should not be filled to more than 68% or less than 60%
of their water capacity. Cylinders currently supplied by inControl fire are
filled to 68% of their water capacity.
Percent filling =
Lb. CO2 in cylinder
Lb. water capacity of cylinder
7619 Hamilton Ave,
Cincinnati, Oh 45231
Page 1 of 1
Telephone
+1 513 729-2473
x 100
Fax
+1 513 729-3444
Website
tomcofiresystems.com
51-0140-0997
High Pressure CO2 Fire Protection
Warning Signs
10"
[254.00]
WARNING
Carbon dixide gas
can cause injury or
death.
When alarm operates,
do not enter
until ventilated.
CAUTION
Carbon dixide gas
can cause injury or
death. Ventilate the
area before entering. A
high carbon dioxide gas
concentration can occur
in this area and can
cause suffocation.
7"
[177.80]
Ø1/8"
[Ø3.18]
Part Number: 990491
Part Number: 990493
WARNING
CAUTION
Carbon dixide gas
can cause injury or
death.
When alarm operates,
vacate immediately.
Carbon dixide gas can
cause injury or death.
Carbon dioxide gas
discharge into nearby
space can collect here.
When alarm operates
vacate immediately.
Part Number: 990492
7619 Hamilton Ave,
Cincinnati, Oh 45231
Page 1 of 1
Part Number: 990495
Telephone
+1 513 729-2473
Fax
+1 513 729-3444
Website
tomcofiresystems.com
51-0149-0997
1-5/8
Ref
Double Bracket
Marine Installations
36”
(91 cm )
Washer , 96020048
Lockwasher , 96020084
Nut, 96020047
Plan View
A
A
Section A- A
7619 Hamilton Ave,
Cincinnati, Oh 45231
NOTE:
Install captive nuts in back beam
before beam is fastened to wall
Captive nut
96020085
15”
(38 cm )
Single Bracket
Standard Industrial Installations
36"
(91cm )
2. 7
Ref
12
Ctrs Ref
Telephone
+1 513 729-2473
13.3
Ref
No. of cylinders
Rod, 14-1/2", 96040469
Angle, 96050019
Captive nut, 96020085
Plain nut, 96020047
Plain washer, 96020048
Lockwasher, 96020084
Cap screw, 96020065
10.7
Ref
Fax
+1 513 729-3444
Typical
Wall Fastening
3/8" Threaded rod
14-1/2" long
96040469
Back Beam
96050016-XX
Anchor bolts
to be anchored
into solid structure
3/8" anchor bolts by othere
Position 12” to 24” apart
avoiding contact with cylinders
Typical Bracketing, Single Bank 100 lb. Cylinders
High Pressure CO2 Fire Protection
No. of pieces required for single bank set-up
3
4
5
6
7
8
9
2
3
4
5
6
7
8
2
2
2
2
2
2
2
4
5
6
7
8
9
10
3
6
8
10
12
14
16
6
8
10
12
14
16
18
6
8
10
12
14
16
18
2
2
2
2
2
2
2
10
9
2
11
18
20
20
2
Website
tomcofiresystems.com
Page 1 of 1
51-51-1054-1097
2. Design is based upon the use of 1-5/8” technistrut beams and components, or similar.
1. XX of beam part no. indicates the number of
cylinders.
Notes
2
1
2
3
2
4
4
2
Front beam
96050018-XX
100 lb. CO2
Cylinder
Steel angle
96050019
Cap screw , 96020065
Washer , 96020048
Lockwasher , 96020084
Tomco2 Fire Systems
System Design
8/16/10 Rev. 0
SECTION 3
SYSTEM DESIGN
Table of Contents
Paragraph
3-1
3-2
3-3
Subject
General
Total Flood System Design
Local Application System Design
Tomco2 Fire Systems
System Design
8/16/10 Rev. 0
SECTION 3
SYSTEM DESIGN
3-1
GENERAL
This section is provided as a guide in designing a high pressure CO2 fire extinguishing
system. The two major types of systems covered in this section are total flooding and local
application.
3-2
TOTAL FLOOD SYSTEM DESIGN
A. A total flooding system consists of a fixed supply of carbon dioxide connected to a
piping network with fixed nozzles that discharge into an enclosed space. This type of
system may be used whenever an enclosure exists about the hazard. The enclosure
must be adequate to contain the discharge of agent to achieve the required carbon
dioxide concentration. Figure 3-1 illustrates a total flood design process.
B. Fires which can be extinguished by total flooding methods may be divided into two
categories:
1. Surface fires involving flammable liquids, gases and solids.
2. Deep seated fires involving solids subject to smoldering.
C. Surface fires are the most common hazard and are usually subject to prompt
extinguishment when carbon dioxide is quickly introduced into the enclosure in
sufficient quantity.
D. For deep-seated fires, the required extinguishing concentration shall be maintained for
a sufficient period of time to allow the smoldering to be extinguished and the material to
cool to a point to prevent re-ignition.
3-1
Tomco2 Fire Systems
System Design
8/16/10 Rev. 0
SYSTEM DESIGN PROCESS
TOTAL FLOODING
Caution:
This design criteria is for enclosure temperature only.
Figure 3-1
Total Flood Design Process
3-2
Tomco2 Fire Systems
System Design
8/16/10 Rev. 0
3-2.1 Quantity Calculations for Surface Fires
A. Section 5-3 of NFPA Standard 12 2005 gives the guidelines for determining the
quantity of carbon dioxide quantities for surface fires.
B. The minimum design concentration of carbon dioxide required in no case shall
be less than 34%.
C. Table 3-1 lists the minimum design concentrations required for extinguishment of
some common liquids and gases.
3-3
Tomco2 Fire Systems
System Design
8/16/10 Rev. 0
Material
Minimum Design CO2
Concentration (%)
66
34
36
37
41
34
37
72
64
37
37
40
40
46
40
43
46
49
34
53
34
35
34
75
36
36
34
34
36
34
34
35
40
36
40
39
35
36
36
34
Acetylene
Acetone
Aviation Gas Grades 115/145
Benzol, Benzene
Butadiene
Butane
Butane 1
Carbon Disulfide
Carbon Monoxide
Coal or Natural Gas
Cyclopropane
Diethyl Ether
Dimethyl Ether
Dowtherm
Ethane
Ethyl Alcohol
Ethyl Ether
Ethylene
Ethylene Dichloride
Ethylene Oxide
Gasoline
Hexane
Higher Paraffin Hydrocarbons
Hydrogen
Hydrogen Sulfide
Isobutane
Isobutylene
Isobutyl Formate
JP - 4
Kerosene
Methane
Methyl Acetate
Methyl Alcohol
Methyl Butane 1
Methyl Ethyl Ketone
Methyl Formate
Pentane
Propane
Propylene
Quench, Lube Oils
Note:
The theoretical minimum extinguishing concentrations in air for the above materials
were obtained from a compilation of Bureau of Mines Limits of Flammability of Gases
and Vapors (Bulletins 503 and 627).
Table 3-1
Minimum Carbon Dioxide Concentrations for Extinguishment
(TABLE 5.3.2.2 from NFPA 12 2005)
3-4
Tomco2 Fire Systems
System Design
8/16/10 Rev. 0
D. In figuring the net cubic volume to be protected, the volume of permanent, nonremovable, impermeable structures may be subtracted from the gross volume to
be protected, however, this allowance is not recommended.
E. In two or more interconnected volumes where "free flow" of carbon dioxide can
take place, the carbon dioxide quantity shall be the sum of the quantities for each
volume, using its respective volume factor from table 3-2. If one volume requires
greater than 34% concentration, the higher concentration shall be used in all
interconnected volumes.
Volume of Space
(ft3 Incl.)
Up to
140
141
500
501
1,600
1,601
4,500
4,501
50,000
Over
50,000
Volume Factor
3
(ft /lb. CO2)
(lb. CO2/ft3)
14
.072
15
.067
16
.063
18
.056
20
.050
22
.046
Calculated Quantity
Not Less Than
---10
35
100
250
2,500
Table 3-2
Flooding Factors For 34% Concentration
(Table 5.3.3(a) NFPA 12 2005)
3-2.2 Material Conversion Factor
Conversion Factor
For materials requiring a design concentration over 34%, the basic quantity of carbon
dioxide calculated from the volume factor given in table 3-2 shall be increased by
multiplying this quantity by the appropriate conversion factor given in table 3-3.
4
3
2
1
30
34
40
50
60
70
80
Minimum Design CO2 Concentration - %
Table 3-3
Material Conversion Factors
(Table 5.3.4 NFPA 12 2005)
3-5
90
Tomco2 Fire Systems
System Design
8/16/10 Rev. 0
3-2.3 Special Conditions
A. Additional quantities of carbon dioxide shall be provided to compensate for any
special condition that may adversely affect the extinguishing efficiency.
B. Any openings that cannot be closed at the time of extinguishment shall be
compensated for by the addition of a quantity of carbon dioxide equal to the
anticipated loss at the design concentration during a one (1) minute period. This
amount of carbon dioxide shall be applied through the regular distribution
system. See 5.4.4.1 of NFPA Standard 12 2005.
C. For ventilating systems which cannot be shut-down, additional carbon dioxide
shall be added to the space through the regular distribution system in an amount
computed by dividing the volume moved during the liquid discharge period by the
flooding factor. This shall be multiplied by the material conversion factor
determined in table 3-3 when the design concentration is greater than 34%.
D. For applications where the normal temperature of the enclosure is above 200º F
(93º C), a 1% increase in the calculated total quantity of carbon dioxide shall be
provided for each additional 5º F (-15º C) above 200º F (93º C).
E. For applications where the normal temperature of the enclosure is below 0º F
(-18º C), a 1% increase in the calculated total quantity of carbon dioxide shall be
provided for each degree below 0º F (-18º C).
F. Under normal conditions, surface fires are usually extinguished during the
discharge period. Except for unusual conditions, it will not be necessary to
provide extra carbon dioxide to maintain the concentration.
G. A flooding factor 8 ft3/lb. shall be used in ducts and covered trenches. If the
combustibles represent a deep-seated fire, it shall be treated as described in
section 3.2.4.
3-2.4 Quantity Calculations for Deep Seated Fires
The quantity of carbon dioxide for a deep-seated type fire is based on a fairly tight
enclosure. After the design concentration is reached, the concentration shall be
maintained for a substantial period of time, but not less than 20 minutes. Any
possible leakage shall be given special consideration since no allowance is included
in the basic flooding factors.
3-2.5 Combustible Materials
A. For combustible materials capable of producing deep-seated fires, the required
carbon dioxide concentrations cannot be determined with the same accuracy
possible with surface burning materials. The extinguishing concentration will
vary with the mass of material present because of the thermal insulating effects.
Flooding factors have therefore been determined on the basis of practical test
conditions.
B. The design concentrations listed in table 3-4 shall be achieved for the hazards
listed. Generally, the flooding factors have been found to provide proper design
concentrations for the rooms and enclosures listed.
3-6
Tomco2 Fire Systems
System Design
8/16/10 Rev. 0
C. Flooding factors for other deep seated fires shall be justified to the satisfaction of
the authority having jurisdiction before use. Proper consideration shall be given
to the mass of material to be protected because the rate of cooling is reduced by
the thermal insulating effects.
ft3/lb.
CO2
10
m3/kg
CO2
0.62
lbs.
CO2/ft3
0.100
kg
CO2/m3
1.60
50
12
0.75
0.083
(200 lb.
minimum)
1.33
(91 kg
minimum)
65
8
0.50
0.125
2.00
75
6
0.38
0.166
2.66
Design
Concentration %
50
Specific Hazard
Dry electrical hazards in
general. (Spaces 0-2000 ft3)
Dry electrical hazards in
general.
(Spaces greater than 2000
ft3)
Record (bulk paper) storage,
ducts and covered trenches.
Fur storage vaults, dust
collectors.
Table 3-4
Flooding Factors for Specific Hazards
(Table 5.4.2.1 NFPA 12 2005)
D. For deep seated fires the design concentration shall be achieved within 7
minutes as specified in Paragraph 5.5.2.3 of the NFPA Standard 12 2005. In
addition to the basic quantity, any leakage or temperature factors must be added.
The discharge rate shall develop a concentration of 30% that must be achieved
within 2 minutes. To develop the 30% concentration within 2 minutes a flooding
factor of 0.043 lbs/fr3 should be used.
3-2.6 Estimated Flow Rate Calculations
A. The problem encountered in flow rate calculations is complicated by the physical
characteristics of carbon dioxide. The agent leaves the storage tank as a liquid
at saturation pressure (850 psig @ 70º F).
B. As the temperature of the liquid increases as it flows through the discharge
piping, the liquid CO2 begins to vaporize producing a mixture of liquid and vapor.
As the pressure increases, the density of the vapor over the liquid increases. On
the other hand, the liquid expands as the temperature goes up and its density
decreases. This phenomenon reduces the density of the agent and results in an
increase in the flow velocity.
C. Since the flow rate for the vapor phase is considerably less than the flow rate for
the liquid phase, compensation must be made during the calculation of the actual
flow rate.
3-2.7 Nozzle Placement Guide
A. Tomco2 Fire Systems uses both wall, vent or s-type discharge nozzles for total
flood hazards. All of these types of nozzles have proven to be effective in
providing a uniform concentration throughout the hazard enclosure.
3-7
Tomco2 Fire Systems
System Design
8/16/10 Rev. 0
B. The wall nozzle usually creates a high velocity discharge that provides a
thorough mix of CO2 throughout the entire enclosure. S-type nozzles are usually
used when a slower more "cushioned" discharge is required in areas such as
computer rooms, sub-floor areas or records vaults where a high velocity
discharge could seriously damage the contents. Vent nozzles are typically used
in small spaces, such as duct work.
C. It is not necessary to place the nozzles directly at the ceiling level. In
applications where obstructions are encountered at the ceiling level, the nozzles
should be installed lower than these obstructions. In no case should the nozzles
be installed less than 3' above the highest object within the protected enclosure.
D. A full discharge test shall be conducted on all systems. The coverage of nozzles
in the actual installation will be verified by this test except when waived by the
authority having jurisdiction. More often the area of coverage per nozzle will be
reduced from the above recommended maximums due to:
1. Inability of single nozzle to deliver the required flow rate to flood the
maximum area.
2. Consideration of obstructions within the hazard that require additional
nozzles to cover the space on both sides of the obstruction.
3. The hazard contains delicate or fragile materials that might be damaged by a
highly turbulent discharge.
Table 3-5
Nozzle Spacing
E. The particular shape or the contents of a hazard may also necessitate a greater
number of nozzles than what is shown on the above chart.
F. The wall nozzle can be used in most total flood applications. Maximum spacing
shall not exceed 16ft.
G. Wall nozzles should not be used for protecting ducts, pits or covered trenches.
H. In special applications requiring a low velocity discharge, s-type nozzles usually
associated with local application may be used in total flooding systems and
should not exceed a maximum side dimension of 16 feet.
I.
Protection of any unusual shaped volumes or excessive ceiling heights should be
directed to Tomco2 Fire Systems.
3-8
Tomco2 Fire Systems
3-3
System Design
8/16/10 Rev. 0
LOCAL APPLICATION SYSTEM DESIGN
3-3.1 General
A. A local application system consists of a fixed supply of carbon dioxide
permanently connected to a system of fixed piping with nozzles arranged so as
to discharge the agent directly onto the hazard.
B. Local application systems are used for the suppression of surface fires in
flammable liquids, gases and shallow solids where the hazard is not enclosed or
where the enclosure does not conform to the requirements for total flooding.
Examples of hazards that may be protected by local application systems include
dip tanks, quench tanks, spray booths, machining operations and printing
presses. Figure 3-2 illustrates a local application design process.
C. A discharge test must be conducted to verify complete coverage of the hazard
based on nozzle placement.
D. To determine the nominal cylinder storage capacity for all local application
systems, the computed quantity of carbon dioxide shall be increased by 40% to
compensate for the vapor phase of discharge. Only the liquid portion of the
discharge is effective.
3-9
Tomco2 Fire Systems
System Design
8/16/10 Rev. 0
HAZARD
ANALYSIS
LOCAL
APPLICATION
LIQUID
SURFACE
WETTED
SURFACE
NOZZLE
PLACEMENT
NOZZLE
FLOW RATE
AGENT
QUANTITY
HYDRAULIC
CALCULATIONS
(NOZZLE
ORIFICE
CODES AND
PIPE SIZES)
DETECTION
AND
ACTUATION
EQUIPMENT
Figure 3-2
Local Application Design Process
3-10
Tomco2 Fire Systems
System Design
8/16/10 Rev. 0
3-3.2 Types of Surface Fires
A. Within the scope of this manual, two types of surfaces must be considered:
liquid surfaces and wetted or coated surfaces. The liquid surface is that surface
of deep layer of flammable liquid usually more than 1/4" in depth that is exposed
to the atmosphere. Wetted or coated surfaces are defined as those designed for
drainage which are constructed and maintained so that no pools of liquid usually
less than 1/4" in depth and will accumulate over a total area exceeding 10% of
the protected surface. This does not apply where there is a heavy buildup of
residue.
B. National Fire Protection Association NFPA 12 Standard For Carbon Dioxide
Systems and FM Global Property Loss Control Data Sheets should be
referenced when determining the suitability of a hazard for the local application
method of protection.
3-3.3 Duration of Discharge
The minimum effective discharge time for computing quantity of agent shall be 30
seconds of liquid discharge at the nozzles. Where there is a possibility that metal or
another material may become heated above the ignition temperature of the fuel, the
effective (liquid) discharge time shall be increased to permit adequate cooling of the
material. Special fuels such as paraffin wax or cooking oil require a minimum
discharge time of 3 minutes because the auto-ignition point is below its boiling point.
3-3.4 Methods of Application
There are two accepted methods of calculating the quantity of CO2 required for local
application systems. The RATE-BY-AREA METHOD is used where the fire hazard
consists primarily of a flat surface or low level objects associated with horizontal
surfaces. The RATE-BY 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.
3-3.5 Rate-By-Area Method
A. For rate-by-area local application systems, the quantity of CO2 required to protect
a hazard is based on the summation of the listed discharge rates from all
individual nozzles. The discharge rate for each nozzle is determined by the
distance from the surface to be protected to the nozzle. The discharge rate and
distance from the protected surface to nozzle determines the maximum area
which a nozzle can protect. The flow rates, area of coverage and height
limitations are found in tables 3-8, 3-9, 3-10.
B. Overhead type nozzles shall be installed perpendicular to the hazard and
centered over the area protected by the nozzle. They may also be installed at
angles between 45 degrees and 90 degrees from the plane of the hazard surface
as described in table 3-7. The height used in determining the necessary flow
rate and area coverage shall be the distance from the aiming point on the
protected surface to the nozzle measured along the axis of the nozzle.
C. When installed at an angle, nozzles shall be aimed at a point measured from the
near side of the area protected by the nozzle, the location of which is calculated
3-11
Tomco2 Fire Systems
System Design
8/16/10 Rev. 0
by multiplying the fractional aiming factor in table 3-7 by the width of the area
protected by the nozzle.
D. If there is a physical limitation on the height of the nozzle above the protected
surface, this height limitation may determine the number and type of nozzles that
must be used. If there are no restrictions on nozzle height, the minimum number
of nozzles may be used based on the maximum allowable distance.
E. When coated stock or parts extend above a protected surface more than two feet
additional nozzles may be required to protect this stock. When determining the
location of nozzles, considerations should be given for the possible affects of air
currents, winds and forced drafts, as additional nozzles may be required.
3-3.6 Rate-By-Volume Method
A. If a hazard is three dimensional in nature and cannot be easily reduced to
equivalent surface areas, rate-by-area protection is not recommended. For such
three dimensional solid type hazards a rate-by-volume approach should be used
when designing a local application system using the rate-by-volume method.
B. The total discharge rate of the system shall be based on the volume of an
assumed enclosure entirely surrounding the hazard.
C. The assumed enclosure shall be based on an actual closed floor unless special
provisions are made to take care of bottom conditions.
D. The assumed walls and ceiling of this enclosure shall be at least 2 ft (0.6 m) from
the main hazard unless actual walls are involved and shall enclose all areas of
possible leakage, splashing or spillage.
E. No deductions shall be made for solid objects within this volume.
F. A minimum dimension of 4 ft (1.2 m) shall be used in calculating the volume of
the assumed enclosure.
G. If the hazard may be subjected to forced drafts, the assumed volume shall be
increased to compensate for losses on the windward sides.
H. Calculation of the system discharge rate and quantity of CO2 required is based
on the volume of an assumed enclosure surrounding the hazard. The assumed
enclosure is based on the presence of a closed floor under the hazard. The
assumed enclosure is at least two feet in all directions from the actual hazard.
The basic system discharge rate is then calculated using one lb. per min. per
cubic foot of assumed volume.
I.
Location and Number of Nozzles. A sufficient number of nozzles shall be used
to adequately cover the entire hazard volume on the basis of the system
discharge rate as determined by the assumed volume.
J.
Nozzles shall be located and directed so as to retain the discharged carbon
dioxide in the hazard volume by suitable cooperation between nozzles and
objects in the hazard volume.
3-12
Tomco2 Fire Systems
System Design
8/16/10 Rev. 0
K. Nozzles shall be located so as to compensate for any possible effects of air
currents, or forced drafts.
3-3.7 Rate-By-Volume Partial Enclosure
A. If the assumed enclosure has a closed floor and is partly defined by permanent
continuous walls extending at least 2 ft. above the hazard (where the walls are
not normally part of the hazard) the discharge rate may be proportionately
reduced to not less than 0.25 lbs./min./cu. ft. (NFPA 12 2005 paragraph 6.5.3.2)
B. Refer to figure 3-3 to determine the allowable flow rate reduction for a hazard
with a partial enclosure.
% PERIMETER ENCLOSED
100
RATE BY VOLUME
MATHEMATICAL METHOD
FACTOR = [% PERIMETER OPEN
(EXPRESSED AS A DECIMAL)
x .75] + .25
75
50
25
0
.4 .425 .45 .475
.25
.375
.50
.625
.75
LBS/MIN/CU FT
Figure 3-3
Partial Enclosure Flow Rate Reduction per NFPA 12
Discharge Angle (1)
45-60
60-75
75-90
90 (Perpendicular)
Note:
Aiming Factor (2)
1/4
1/4-3/8
3/8-1/2
1/2 (Center)
(1) Degrees from plane of hazard surface.
(2) Fractional amount of nozzle coverage side-of-square.
3-13
.875
1.0
Tomco2 Fire Systems
System Design
8/16/10 Rev. 0
Example:
Note:
Distance “X” and the flow rate are the same in both examples, only the aiming point
for the nozzle changes.
3-14
Tomco2 Fire Systems
Installation
8/16/10 Rev. 0
SECTION 4
INSTALLATION
Table of Contents
Paragraph
4-1
4-2
4-3
4-4
4-5
4-6
4-7
4-8
4-9
4-10
4-11
4-12
4-13
4-14
4-15
4-16
4-17
4-18
4-19
4-20
Subject
General
Pipe and Fittings
Welding Connections
Tubing Connections
Pipe Hangars and Bracing
Expansion Joints
Cylinder Assemblies
Installation of Cylinders
Installation of Pipe and Fittings
Installation of Nozzles
Local Manual Control
Remote Cable Manual Control
Solenoid Actuator
Discharge Pressure Switch
Pressure Release Trip
System Verification and Testing
Inspection for Mechanical Integrity
Pressure and Leak Test
Pipe Sleeves
Pneumatic Time Delay
Tomco2 Fire Systems
Installation
8/16/10 Rev. 0
SECTION 4
INSTALLATION
4-1
GENERAL
This specification is to be used as a minimum standard for installation of piping, supports,
hangers and system components. If the requirements of local, national codes or the
authority having jurisdiction are more stringent, these more stringent requirements shall
take precedence. Installation shall be performed in a workman like manner according to
the highest standards.
A. All pipe and fittings shall be new and of recent manufacture.
B. All pipe shall be reamed after cutting so that all burrs and sharp edges are removed.
C. All pipe shall be blown clean and swabbed thoroughly with solvent inside before
installation to remove foreign matter and oil. Some effective solvents are
trichlorethylene, perchlorethylene or trichlorethane.
D. All pipe and fittings installed outdoors or in corrosive areas should be galvanized or
coated with a proper rust inhibitor.
E. All screwed pipe shall be coated with Teflon tape or an approved pipe joint compound.
Coating of the threads must start at least two threads back from the pipe end.
4-2
PIPE AND FITTINGS
The following provides specifications for materials normally used. This includes the use of
other materials such as brass, copper, stainless steel, flexible hose, etc. provided that they
satisfy the system pressure/temperature requirements (working pressure of 3,00 psi [207
bar]). Pipe and fittings should have a minimum bursting pressure (not working pressure) of
5,000 psi (345 bar).
The project drawings will indicate the specific piping materials to be utilized for each
project. As the type of piping material to be utilized are incorporated into the system
flow/pressure loss design, the system designer must be contacted if materials other than
those specified are used, and the designers approval must be received.
Ferrous Pipe
Seamless or electric weld, black or galvanized steel pipe conforming to ASTM A-53,
Grades A or B, ASTM A-106, Grades A,B or C
Sizes:
1/4" through 3/4" Schedule 40 (standard)
1” through 4” Schedule 80 (extra heavy)
Furnace butt weld ASTM-53 pipe, cast iron pipe, and pipe conforming to ASTM A-120 must
not be used.
Black pipe may be used when installed indoors and where moisture or corrosive
atmospheres are not normally present. Where any portion of a piping system is outdoors or
in an unheated area, that portion should be galvanized. Where galvanized pipe is used,
galvanized fittings should be used.
4-1
Tomco2 Fire Systems
Installation
8/16/10 Rev. 0
Ferrous Fittings Threaded
1/4" through 2”:
Class 300 malleable iron, ASTM A-197, or ductile iron, ASTM A-394
2 1/2" and Larger:
3,000# forged steel
Class 150 and cast iron fittings must not be used.
Pipe Connections
Pipe can be assembled using threaded, flanged, or welded joints as specified on the
project drawings.
Threaded Connections
All threaded joints should have American Standard pipe threads (NPT) in accordance
with ANSI B2.1.
All threads should be full length and suitably reamed and chamfered. After cutting and
threading, pipe should be reamed and cleaned before assembly to remove all cutting oil,
lacquer, scale and cuttings, using a degreasing solution run through the pipe interior.
For assembly, use pip sealant applied to male thread only. Joints should be tightened
until engagement conforms to that specified for tight joints using American Standard pipe
threads. Normal engagements for tight joints are:
Pipe Size
1/4"
3/8"
1/2"
3/4""
1"
1 1/4"
1 1/2"
2"
2 1/2"
3"
3 1/2"
4"
5"
6"
4-3
Engagement
3/8"
3/8"
1/2"
9/16"
11/16"
11/16"
11/16"
3/4"
15/16"
1"
1 1/16"
1 1/8"
1 1/4"
1 5/16"
WELDED PIPE CONNECTIONS
When making welded connections, bevel type welding fittings should be installed and all
welding should be performed in accordance with Section IX, Qualification Standard for
Welding and Brazing Procedures, Welders, Brazer Operators, of the ASME Boiler and
Pressure Vessel Code. During welding care must be taken to ensure that weld splatter and
molten metal does not enter the pipe and that any roughness that could affect flow is
removed.
4-2
Tomco2 Fire Systems
4-4
Installation
8/16/10 Rev. 0
TUBE CONNETIONS
When using tube, compression type fittings are preferred. The pressure/temperature
ratings of the manufacturer of the fitting should not be exceeded. When tube joints are
soldered or brazed the melting point of the soldering metal should be at least 10,000°F.
4-5
HANGARS AND BRACING
All system piping, both vertical and horizontal, most be suitably supported with hangars
conforming to the least requirements or ANSI B31.1.
Pipe hangars should be capable of supporting the pipe under all conditions of operation
and service. They should allow for the expansion and contraction of the piping, and should
prevent pipe loads and stresses from being transmitted into connected equipment. Hangars
and supports should be of rugged design and installed so that they will not be loosened by
movement of the supported pipe. U-bolts with double nuts should be used.
Pipes must be braced or anchored to the building structure such as beams, columns,
concrete walls, etc., in order to prevent longitudinal and lateral movement and sway.
Carbon dioxide piping must not be hung or supported form other piping systems (i.e. water,
compressed air, etc.).
Large forces are exerted on the system cylinders and piping during discharge. Each
section of pipe must be braced or secured to restrict both the vertical and lateral
movement. Where practical, riser piping should be supported independently of the
connected horizontal piping. A support must be installed adjacent to each discharge nozzle
and wherever a change in pipe direction occurs.
In addition, for some regions classified as earthquake zones, or for projects such as
nuclear sites subject to unique code requirements, special sway bracing and/or hangars
may be required. Refer to project and/or contract drawings for requirements of special
bracing.
Generally, no section of pipe should be without a hanger or brace. Maximum spacing
between hangars and hangar rod sizes should be indicated as shown, which are in
accordance with ANSI B31.1.0.
Hangar Spacing
Pipe Size
1/2"
3/4""
1"
1 1/4"
1 1/2"
2"
2 1/2"
3"
3 1/2"
4"
5"
6"
Engagement
5'
6'
7'
9'
9'
10'
11'
12'
13'
14'
16'
17'
4-3
Rod Size
3/8"
1/2"
5/8"
3/4"
Tomco2 Fire Systems
Installation
8/16/10 Rev. 0
Intermediate Pipe Hanger
(Trapeze)
Pipe Size
Rod Size
1" and smaller
3/8"
1-1/4" thru 3"
1/2"
4"& 5"
5/8"
6"
3/4"
Rigid Pipe Hanger
(Roof and Floor)
Pipe Size
1" thru 2"
2-1/2" thru 4"
5" & 6"
"A"
8"
12"
16"
Angle Size
1-1/2" x 1-1/2" x 1/4"
3" x 3" x 1/4"
3-1/2" x 3-1/2" x 3/8"
Figure 4-13
Typical Pipe Supports
4-4
U-Bolt Dia.
3/8"
1/2"
5/8"
Tomco2 Fire Systems
Installation
8/16/10 Rev. 0
Intermediate Pipe Hanger
(Roof)
Letter
A
B
C
D
E
F
Angle Size
U-Bolt Dia.
Anchor Size
1" - 2" Pipe
6"
10"
1-1/2"
3"
1-3/4"
13-1/4"
1-1/2" x 1-1/2" x 1/4"
3/8"
3/8"
2-1/2" - 4" Pipe
8"
14"
1-1/2"
5"
1-3/4"
19-1/2"
3" x 3" x 1/4"
1/2"
1/2"
Figure 4-14
Typical Pipe Supports
4-5
5" - 6" Pipe
10"
18"
1-1/2"
7"
1-3/4"
24-3/4"
3-1/2" x 3-1/2" x 3/8"
5/8"
5/8"
Tomco2 Fire Systems
Installation
8/16/10 Rev. 0
Rigid Pipe Hanger
(Wall)
Letter
A
B
C
D
E
F
G
Angle Size
U-Bolt Dia.
Anchor Size
1/2" - 3/4" Pipe
6"
1-1/2"
3"
10"
1-1/2"
7"
8-1/4"
1" x 1" x 3/16"
1/4"
1/4"
1" - 1-1/2" Pipe
9"
3"
4"
14"
2"
10"
12-3/4"
2" x 2" x 1/4"
3/8"
3/8"
Figure 4-15
Typical Pipe Supports
4-6
1-1/2" - 2" Pipe
12"
4"
5"
18"
2-1/2"
13"
17"
3" x 3" x 3/8"
3/8"
1/2"
Tomco2 Fire Systems
Installation
8/16/10 Rev. 0
Rigid Pipe Hanger
(Wall)
Letter
A
B
C
D
E
F
Angle Size
U-Bolt Dia.
Anchor Size
1" - 2" Pipe
8"
12"
2"
7"
5"
9-1/4"
1-1/2" x 1-1/2" x 1/4"
3/8"
3/8"
2-1/2" - 4" Pipe
12"
18"
2"
13"
8"
12-3/8"
3" x 3" x 1/4"
1/2"
1/2"
Figure 4-16
Typical Pipe Supports
4-7
5" - 6" Pipe
16"
20"
2"
15"
11"
17-1/2"
3-1/2" x 3-1/2" x 3/8"
5/8"
5/8"
Tomco2 Fire Systems
Installation
8/16/10 Rev. 0
Tank Capacity
(tons)
Voltage
Horsepower
Phase
Amps
Fuse
Wire
0.75
1.5
2
230
230
208/230
0.5
0.5
0.5
1
1
1
5.2
5.2
5.2
10
10
10
#12
#12
#12
3.75
208/230
1
1
9.8
15
#12
460
1
3
4.2
6
#12
208/230
1
1
9.8
15
#12
230
1
3
7.2
10
#12
460
1
3
4.2
5
#12
230
2
3
10.2
15
#12
460
2
3
6.2
10
#12
230
2
3
10.2
15
#12
460
2
3
6.2
10
#12
230
2
3
10.2
15
#12
460
2
3
6.2
10
#12
230
2
3
10.2
15
#12
460
2
3
6.2
10
#12
230
3
3
25.4
30
#10
460
3
3
12.5
15
#12
230
3
3
25.4
30
#10
460
3
3
12.5
15
#12
230
3
3
25.4
30
#10
460
3
3
12.5
15
#12
230
3
3
25.4
30
#10
460
3
3
12.5
15
#12
6
8
10
12
14
18
22
26
30
Consult factory for information regarding tank sizes larger than 30 tons.
4-6
EXPANSION JOINTS
A certain amount of contraction can occur, which is caused by a maximum
temperature change in long continuous pipe runs. Approximately 1 inch per 100 feet of
steel pipe. Often, as part of the natural layout of the system, a swing joint can serve to
give the desired flexibility. In straight runs an expansion joint should be installed on the
basis of one after approximately 100 feet of continuous run and after each 100 feet run
thereafter.
4-8
Tomco2 Fire Systems
Installation
8/16/10 Rev. 0
SUPPORTS PERMITTING
LONGITUDINAL MOVEMENT
(TYP 2)
ANCHOR
'H'
'W'
PLAN VIEW
Note:
PIPE
SIZE
1/2"
1/2"
1/2"
3/4"
3/4"
3/4"
3/4"
1"
1"
1"
1"
1 1/4"
1 1/4"
1 1/4"
1 1/4"
1 1/2"
1 1/2"
1 1/2"
1 1/2"
2"
2"
2"
2"
Rigid hangers should be installed at all three (3) points noted above. However, the
tension on the ‘U’ bolts supporting the pipe to the hanger must be adjusted to allow
longitudinal movement on either side of the loop.
DIM
H
1'-0"
2'-0"
3'-0"
1'-0"
2'-0"
3'-0"
4'-0"
1'-0"
2'-0"
3-0"
4'-0"
1'-0"
2'-0"
3'-0"
4'-0"
1'-0"
2'-0"
3'-0"
4'-0"
1'-0"
2'-0"
3'-0"
4'-0"
DIM
W
5'-6"
1'-6"
0'-6"
8'-6"
3'-0"
1'-0"
0'-6"
10'-0"
3'-6"
1'-0"
0'-6"
12'-0"
5'-0"
1'-0"
0'-6"
13'-6"
6'-0"
2'-0"
0'-6"
15'-6"
7'-6"
2'-6"
0'-6"
PIPE
SIZE
3"
3"
3"
3"
3"
4"
4"
4"
4"
4"
5"
5"
5"
5"
6"
6"
6"
6"
8"
8"
8"
8"
Figure 4-10
Estimating Guide for Expansion Loops
4-9
DIM
H
1'-0"
2'-0"
3'-0"
4'-0"
5'-0"
1'-0"
2'-0"
3'-0"
4'-0"
5'-0"
2'-0"
3'-0"
4'-0"
5'-0"
2'-0"
3'-0"
4'-0"
5'-0"
2'-0"
3'-0"
4'-0"
5'-0"
DIM
W
20'-0"
10'-0"
5'-0"
1'-0"
0'-6"
21'-6"
11'-6"
5'-0"
2'-0"
0'-9"
13'-6"
6'-6"
2'-3"
0'-9"
14'-0"
7'-6"
2'-6"
1'-0"
14'-0"
9'-6"
3'-6"
1'-6"
Tomco2 Fire Systems
4-7
Installation
8/16/10 Rev. 0
CYLINDER ASSEMBLIES
Each cylinder assembly has safety features and components to ensure against
accidental discharge during installation. Prior to starting work, the installer should
become familiar with these features by reviewing the equipment, the appropriate data
sheets, and the installation instructions.
Carbon dioxide cylinders may be located inside or outside the protected space,
although it is preferable to locate them outside the space. When they are installed within
the space they protect, a remote manual control must be installed to ensure the system
can be actuated from a safe location outside the fire area.
All cylinder valves are supplied with transport plugs screwed into the discharge ports.
These plugs have a small hole drilled at right angles to the axis of the discharge port, so
that if accidental discharge dose occur, it will be diffused in a safe manner. In addition,
the SW-50M valves have plugs to shield the vent valve and solenoid actuator ports.
These plugs must be in position whenever the cylinder assemblies are not secured
and/or disconnected from the discharge piping. (The SW-50M valve is initiated by
depressing the pilot valve stem in either of these ports.)
Actuators must only be assembled to the cylinder valve after the cylinders are secured
in their brackets and connected to the discharge piping, which must be complete with
nozzles, using the correct discharge bend assemblies.
The cylinders should be located to provide convenient access so that they can be
readily inspected and also easily removed after use for recharging. Do not install the
cylinder where they will be exposed to the weather elements or the direct rays of the sun.
Do not install the cylinders where temperatures of less than 0°F (-18°C) or higher than
130°F (54°C), unless otherwise specified on the project drawings.
If cylinders are located in hazardous (explosion-proof) area, ensure that the cylinder
solenoid control and all other components are approved for such use, and the installation
of all materials is made in an approved manner.
Cylinders are to be installed in normal upright position. All cylinders are provided with
siphon tube.
4-8
INSTALLATION OF CYLINDERS
1. Fasten cylinder bracketing and manifold brackets securely onto a solid wall of floor or
structural member using 1/2” bolts with suitable anchors. Bolts must not be anchored
into plaster materials. Cylinder brackets must be absolutely secure to withstand the
discharge thrust forces. Be sure that threaded rods are inserted in channel before
channel is permanently mounted.
2. Fasten cylinder securely in bracketing.
3. All large carbon dioxide system cylinders are shipped with valve protection caps.
Remove protection cap from the cylinder and coat it with a light film of grease.
Protection caps should be stored close to cylinders, where they will be readily
available for re-installation when cylinders are disconnected from the system and/or
transported for recharging.
4. With cylinders properly mounted, attach flexible discharge bends to cylinder valves,
hand tighten only.
5. Mount the header manifold using the discharge bends so that the least possible
strain is put on the connections.
6. Disconnect the flexible bend from the cylinder valve and screw, wrench tight into
manifold.
4-10
Tomco2 Fire Systems
4-9
Installation
8/16/10 Rev. 0
INSTALLATION OF PIPE AND FITTINGS
Generally, drawings provided schematic piping layouts showing pipe diameter, pipe
fittings, and pipe lengths utilized for the design calculations. The information shown is not
to be used for fabrication of pipe. The installer must verify that the pipe can be installed
as indicated, and establish fabrication data based upon his inspection of the site.
Changes to piping that may be necessary to suit conditions can critically affect the
system flow balance. Any deviations to the piping must be approved by the designer prior
to their implementation.
Where reducing fittings are called for on the installation drawings, hexagon bushings
of 3,000 lb. forged steel may be used. Malleable iron hexagon reducing bushings may
also be used, up to 2-inch size, provided ones with the correct pressure/temperature
ratings are used. Under no conditions should flush bushings or cast iron bushings be
used. If two reducing fittings are required to make the necessary reduction, they should
be chosen to split the reduction equally.
Pipe should be reamed and cleaned before assembly, and after assembly the entire
piping system should be blown out before nozzles and other devices are installed.
All valves (stop and selector) not flange, should be installed with a flange joint or union
immediately downstream of the valve to facilitate inspection, repair, or replacement.
All pressure relief devices should be located and orientated so that the discharge od
carbon dioxide will not injure personnel, damage equipment, or be otherwise
objectionable.
A dirt trap and blow-out, consisting of a tee with capped nipple 3 to 6 inches (76 to
152 mm) long, should be installed at the end of each pipe run.
Piping through walls, floors, etc. should be run through sleeves of Schedule 40 pipe at
least two sizes larger than the pipe being run and not smaller than 1 inch. Sleeves
through floor slabs should extended at least 2 inches above the floor. Sleeves should be
packed with fire resistant material so as to be dust and weather tight, as specified on
project drawings.
4-10 INSTALLATION OF NOZZLES
1. For total flooding applications, nozzles should be located at the highest practical
elevation within the enclosure. Except where more than one tier of nozzles is used,
or special application conditions apply, the bottom of the orifice should not be more
than 12 inches (305 mm) from the top of the enclosure. For local applications,
nozzles must be located as shown on the project drawings.
2. There must not be any obstructions adjacent to the nozzles (structural columns or
beams, ducts, cable trays, racks, equipment, etc.) that will affect the discharge
patterns or disbursement of the carbon dioxide.
3. Install nozzle piping at the hazard, as shown on the project drawings. Be sure to
fasten piping securely at each nozzle and change in direction of flow.
4-11 LOCAL MANUAL CONTROL
The local manual controls should not be installed on the cylinder assemblies until the
cylinders have been secured into the cylinder bracket, all piping has been completed, and
nozzles installed.
4-11
Tomco2 Fire Systems
Installation
8/16/10 Rev. 0
1. Remove the shipping plug from the vent valve port on top of the SW-50M cylinder
valve.
2. Ensure that the piston in the actuator is in the retracted position, and that the hand
lever is secured with lock-pin and sealed. Then install the actuator into the vent valve
port of the cylinder valve, wrench tight. (During servicing, if piston does not retract,
the pressure on top of the piston must be relieved. Loosen then re-tighten the tube
connector.)
If any hissing or discharge of gas is noticed during connection of the actuator, stop at
once and remove the actuator for cylinder valve. Check the actuator. If no cause for
discharge is found contact Tomco Fire Systems.
3. To orientate the manual lever, unscrew the locking nut 1/4 turn, rotate main body of
the actuator to the position required, then re-tighten locking nut.
IMPORTANT: Do not unscrew the locking nut more than 1/4 turn.
4. If the system has two master cylinders, the actuators of the two units should be
joined together with a connecting link to enable simultaneous actuation.
a)
Loosen cylinders with the bracket sufficient to allow the cylinders to be rotated.
b) Attach the actuators to the cylinder valves.
c) Unscrew the locking nut of each actuator 1/4" turn, sufficient for the hand levers
to be rotated.
d) Connect the hand levers of the two actuators together using a connecting link.
Attach the link to the hole at the end of each lever. Rotate the cylinders and hand
levers as necessary to assure a straight line movement.
Do not remove the safety lock pin from its lever during this operation, otherwise
accidental discharge of cylinders might occur.
e) Tighten the locking nuts of the actuators and tighten the cylinder brackets.
5. If the manual/pressure actuator is to be used with a solenoid actuator, remove the
blank plug from the pressure port and install the 1/8” Swagelock elbow, which is
supplied with solenoid actuator.
4-12 REMOTE CABLE MANUAL CONTROL
1. Install the pull box in a readily accessible location, at a safe distance from the fire
area, and preferably in the main path of egress from the area. The pull box should be
3 to 5 feet (920 to 1520 mm) above floor level.
2.
Run 1/2" conduit or 3/8” standard weight galvanized steel pipe from the pull box to
the location of the actuator hand lever, and terminate with a flared-end fitting. Corner
pulleys must be installed at each change of direction of the conduit or pipe, bends or
offsets will not be accepted. The conduit or pipe must be securely fastened with pipe
straps, especially at each corner pulley.
4-12
Tomco2 Fire Systems
3.
Installation
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Thread the cable through the handle in the pulley box until the end fitting (nipple) is
engaged.
4. Thread the cable through the conduit and around the pulleys to the cylinder. Remove
the cover from each corner pulley in order to thread the cable around the wheel.
Ensure covers are replaced wrench tight. NOTE: Check to ensure the pulley
wheels are correctly mounted in the housings and rotate freely.
5. Pull on end of cable (at cylinder end) to take up the slack. Be sure the pull handle is
properly installed in the pull box and that end fitting fits into the hole in the pull
handle.
6. Feed the cable through the hole in end of the hand lever or connecting link, and
fasten with a cable clamp. The cable should be taught but not tight. When installed,
be sure that there is at least 9 inches (230 mm) of free cable between the cable
clamp and the flared-end fitting for proper operation of the lever(s).
7. On completion of the installation, install a seal wire on the pull box and remove the
lock pin(s) from the actuator lever(s). The system is now ready for use.
4-13
SOLENOID ACTUATOR
Check the solenoid nameplate to ensure that the coil voltage agrees with the supply
voltage of the system and the site conditions.
Caution:
The solenoid actuator should not be connected to cylinder until after
completion of all testing.
1. Provide a junction box located close to the cylinder valve for connection to the
electric actuating circuit.
2. On completion of all testing, connect the solenoid actuator to the adaptor at the top of
the SW-50M cylinder valve, after first confirming that there is no electric power being
applied to the solenoid, and that all o-rings are in place. A slight discharge (puff) of
carbon dioxide might occur as this connection is made.
This connection should be made as follows:
a) secure the mounting bracket square to the valve
b) connect the solenoid valve to the bracket with the screws supplied
c) attach the solenoid to the pressure connection of the cylinder valve wrench tight
d) tighten the screws holding the solenoid to the bracket.
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3. Install the 3/16” hose to connect the solenoid valve exhaust port to the manual
actuator.
4-14
DISCHARGE PRESSURE SWITCH
The pressure operated switch is normally located adjacent to the cylinder(s) and is
connected to the manifold or discharge piping from the cylinders.
1. Mount the switch box securely onto a wall or structural member using the mounting
holes provided. Preferred mounting is upright with pipe and conduit connections to
bottom.
2. Connect 1/2" conduit and appropriate wiring to the electrical connection on the switch
box. To reverse the normal switch contact arrangement, remove the toggle switch
assembly and reverse it in the switch box.
3. To switch loads heavier than the switch rating, or requiring more than two contacts,
the switch should be used to operate a relay or contractor to control the load.
4. Connect the 1/4" NPT connection at the bottom of the front plate to the carbon
dioxide piping using 1/4" steel pipe or 1/4" or 3/16” O.D. copper tube. Install a union
fitting at base of cover to allow removal of front plate for testing.
4-15
PRESSURE RELEASE TRIP
The pressure release trip is used to release loads of up to a maximum of 75 lbs (34 kg),
which are hung on the piston stem.
1. Mount the pressure release trip onto a solid structural member using 5/16” bolts and
appropriate anchors. Fixing must be suitable for the loading, including spring tension
and/or dead weight of operated equipment.
2. Connect the release trip’s 1/4" NPT connection to the carbon dioxide discharge
”
piping using 1/4" steel pipe or 1/4" or 3/16 O.D. copper tube.
1
3. Using /16-inch stainless steel cable and cable clamp (or equivalent), connect the
equipment to be operated to the piston stem. The cable must be suspended at right
angles to the piston stem in order to neither bind nor slide off the stem.
4-16
SYSTEM VERIFICATION AND TESTING
Prior to placing the completed system in service, the installation should be inspected and
tested to confirm:
1. Conformance to system design.
2. Suitability of piping, its correctness to project design, and its support and bracketing.
3. Conformance to the required system operating sequence.
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4. The suitability of the hazard environmental control, safety precautions, sealing, etc.
5. Compliance with the requirements of NFPA 12: Standard on Carbon Dioxide
Extinguishing Systems and/or other applicable standard.
If there is any doubt of the ability of the system to operate and provide the necessary
protection, a full discharge test should be considered. A discharge test will verify the total
system operation, check the agent concentration achieved, determine the duration
(soaking time) that the concentration is retained, check acceptability of nozzle discharge,
check audibility and/or visibility of alarms, ensure interlocks and all auxiliary equipment
operate as required, and allow personnel to become completely familiar with the
discharging system and to practice response.
If a full discharge test is not performed, a puff test, using a minimum of one cylinder, must
be conducted. A full discharge test must be conducted for all Extended Discharge type
systems.
4-16.1 DESIGN
Measure the room and calculate the actual room volume. Check actual volume against
design volume (volume shown on project drawings) and ensure correct quantity of carbon
dioxide is provided.
4-16.2 PIPING
Check the pipe layout to ensure it agrees with the system layout drawings.
Inspect the piping supports and ensure that the pipe is secure and restrained so that
unacceptable movement will not occur.
After the installation of the system piping is completed, and prior to the connection of the
cylinders, nozzles and other equipment, the discharge piping should be blown out and
then pressure tested for leakage. Plug or cap all piping outlets and apply 100 psi (7 bar)
pressure with dry nitrogen or dry air for 10 minutes. At the end of 10 minutes, the
pressure loss should not be greater than 5 psi (0.35 bar). When pressurizing piping, the
pressure should be increased in 50 psi (3.5 bar) increments.
Caution: Pneumatic pressure testing creates a potential risk of injury to
personnel in the area as a result of airborne projectiles if piping should
rupture. Prior to conducting the pneumatic pressure test, the protected
area must be evacuated and appropriate safeguards must be provided
for test personnel and for equipment in the area.
4-16.3 CYLINDERS
1. Inspect cylinders and ensure bracketing and cylinders are secure.
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2. Verify the weight of carbon dioxide in all cylinders, using either an accurate weigh
scale or an approved liquid level gauge. The contents should be within +/-10% of the
normal capacity.
3. Check cylinder discharge bends and check valves for proper connection and
tightness.
4. Ensure that appropriate identification, operating and warning signs are mounted or
posted.
4-16.4 NOZZLES
Each nozzle has an orifice drilled to suit the specific location and discharge flow
requirements. The orifice identification number is stamped on each nozzle.
1. Verify that orifice sizes are as indicated on the project drawings and that the nozzles
are orientated to discharge correctly.
Caution:
Ensure discharge will not splash flammable liquids or create dust
clouds that could extend the fire. Also, ensure the discharging agent
will not injure personnel in the area.
2. Ensure that each nozzle pipe drop is bracketed or braced against the nozzle
discharge thrust, and that the nozzle cannot swivel on its pipe fitting.
3. Check the cleanliness of the protected area to determine if protective caps or seals
are required to prevent orifices from clogging.
4-16.5 MANUAL CONTROL: LOCAL AND REMOTE CABLE TYPE
Ensure the manual actuators and the remote manual controls, for all parts of the
system – master cylinders for main and reserve systems, all master cylinders in a joint
system, and selector and stop valves – are accurately identified and will be accessible
during a fire.
All testing should be carried out with the manual actuator(s) disconnected from the
cylinders, and other devices.
1. With the manual actuator disconnected from the cylinder or other device, pull the lock
pin and operate the lever to verify the movement of the operating piston 1/8” (3.2
mm).
2. If a cable type remote control is used, pull the handle in the pull box and check the
pull, force and length of pull required. Also ensure that there is at least 9 inches (229
mm) of clear movement at the actuator lever.
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Note: Manual controls should not require a pull of more than 40 lbs (178 Newtons),
nor a movement of more than 14 inches (356 mm) for system operation.
3. Check to ensure that the cable runs free and that there is no binding of cable in the
corner pulleys and conduit, and that the corner pulleys and conduit are securely
fixed.
4. Reset the pull box and affix a lead and wire, or similar, seal. Ensure a lock pin is
installed in the manual actuator and that the stem is retracted before reconnecting
the actuator to the cylinder valve or other device. (This will prevent operation of the
cylinder while actuator is being installed.) If a remote manual control is not used,
secure the lock pin in the actuator with a lead and wire seal. If a remote manual
control is used, the actuator lock-pin must be removed after installation before
system is placed in service.
4-16.6 ELETRIC ACTUATOR
Perform all inspections and tests on the control panel, detectors, signals and other
devices as specifically indicated in the specific equipment manufacturer’s manuals.
Note:
The solenoid actuator and the manual actuator must be removed from the
cylinder valve before any testing is performed.
1. Ensure the solenoid actuator is of the correct voltage for the service.
2. Connect the 3/16” hose (supplied) to the respective solenoid valve and manual
actuator. Apply dry nitrogen pressure of 100 psi (7 bar) or dry, clean air pressure to
the inlet port of the solenoid valve (cylinder connection port).
3. Apply the appropriate voltage to the solenoid by actuating a manual station or firing a
detector to operate the discharge circuit. Note: Do not operate fixed thermal detectors
unless they are of the restorable type. The solenoid should operate, which will be
indicated by the movement of the piston stem in the manual actuator. Also there will
be an escape of nitrogen from the small vent hole in the side of the manual actuator.
4. Remove electric power from the solenoid. The solenoid valve should close, indicated
by the cessation of nitrogen discharge, and the return of the piston stem in the
manual actuator to its normal standby position. Check for leakage at the vent hole.
5.
Shut off the pressure supply, and exhaust the line pressure using the exhaust valve
which should be part of the pressurizing equipment.
6.
After all testing has been completed satisfactorily, remove the 3/16” hose, re-install
all actuators to the cylinder valves, and ensure all electrical connections, including
ground connections, are in order. Replace the 3/16” hose, taking care to ensure the
pressure connections are gas tight.
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4-16.7 OPTIONAL DEVICES
1. Gas Operated Sirens. Disconnect the siren from the discharge piping and connect to
a small carbon dioxide cylinder. Operate the carbon dioxide cylinder and ensure all
sirens operate and that the sound is readily heard throughout the protected space.
This should be done under normal background noise conditions.
2. Pressure Operated Switches. To test the circuits and to ensure auxiliary functions
operate correctly, either:
a) Disconnect the union at the pressure connection
b) Insert a small rod into the pressure connection of the cover plate and push
against the piston to trip the switch.
c) Push plunger down to reset switch. OR...
d) Remove the four cover screws and swing cover away from switch box. Manually
operate interior toggle switch. After testing, ensure toggle is returned to normal
stand-by position, then reinstall cover plate.
3. Pressure Release Trip. With a screw driver or other blunt instrument manually push
the stem to the retracted position. Allow the cable to fall, and ensure the connected
equipment operates as required.
4-16.8 CARBON DIOXIDE PUFF TEST
The purpose of this test is to check the integrity of the piping system and to ensure the
pipes are not blocked. It will not check the concentration of carbon dioxide that will be
obtained under a full discharge conditions, or check the integrity (tightness) of the
enclosure.
1. Disconnect all cylinders, except one master cylinder from the system.
2. Operate the remaining master cylinder and ensure carbon dioxide does discharge
from all nozzles.
3. Ensure that there is no undue pipe movement.
4. Ensure all pressure-operated devices operate and that the connected equipment,
alarms and other functions are controlled as required.
4-16.9 CARBON DIOXIDE DISCHARGE TEST
A full discharge test should be performed when there are doubts about the operation of
the system, when any inspection indicates their advisability, and for all extended
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discharge type systems. It is recommended that a full discharge test be performed
whenever cylinders are removed for hydrostatic testing.
During this test :
1. Make checks as indicated under the Puff Test.
2. With a concentration meter, check the carbon dioxide concentrations achieved at
several locations within the enclosure, and specifically adjacent to the primary hazard
within the enclosure.
3. Check the discharge time.
4. Check the holding time, the length of time the carbon dioxide concentration is
maintained.
5. Ensure that the enclosure is reasonably well sealed, and that there is no major
leakage.
6. Ensure all alarms function for the required period of time and that they can be heard
and/or seen throughout the area. This should be done under normal area operating
conditions, i.e. normal background noise and lighting, etc.
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SECTION 5
OPERATION AND SERVICE
Table of Contents
Paragraph
5-1
5-2
5-3
5-4
5-5
5-6
Subject
General
System Activation
Recharging
System Maintenance
Cylinder Recharge Manual
CO2 Pressure/ Temperature Curve
Tomco2 Fire Systems
Operation and Service
8/16/10 Rev. 0
SECTION 5
OPERATION AND SERVICE
5-1
GENERAL
A. Operation and service procedures in this section are provided as a guide for identifying
and correcting systems faults. The use of these procedures by competent personnel
will reduce system down time and minimize unnecessary costs. Troubleshooting
tables are provided for identifying and isolating system/component faults.
B. The CO2 system shall be maintained in full operating condition at all times. Use,
impairment and restoration of this protection shall be promptly reported to the authority
having jurisdiction.
5-1.1 Inspection and Testing
All carbon dioxide systems shall be thoroughly inspected and tested for proper
operation by competent personnel.
5-2
SYSTEM ACTIVATION
1.
Notify your local fire department.
2.
Do not open doors or windows, or remove the carbon dioxide from the protected area
until the fire is completely out.
3.
Do not enter the area until the carbon dioxide has been removed and the area
ventilated. If it is necessary to enter the area while it still contains carbon dioxide, selfcontained breathing apparatus should be used.
In general, providing the system discharges during the early stages of the fire, and
providing all plant shut-down functions are operated and safety precautions are taken, the
fire should be extinguished within one minute of the end of carbon dioxide discharge.
However, the area should be kept closed for at least fifteen minutes following discharge to
allow the area to cool, and to prevent re-ignition. For deep-seated hazards, the space
should be kept tightly closed for at least sixty minutes following discharge.
To check if fire is out:
1.
Look for smoke and steam coming from cracks around doors, windows, vents, etc.
2.
Feel the doors and walls. If they are hot do not open doors, the fire is still burning or is
in the cooling stage.
3.
Listen for crackling sounds.
Have your fire department check the space for you.
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Do not enter area with a lighted cigarette or open flame as flammable vapors may be
present which could cause re-ignition or an explosion.
After opening the door:
1. Completely ventilate the space. CO2 is heavier than air and will drift into low level
spaces (e.g. rooms below grade). Use fans to remove CO2, smoke and fumes from low
areas.
2. Clean-up residue from fire.
3. Determine cause of fire and take corrective action.
5-3
RECHARGING THE SYSTEM
Have the system completely serviced by an Tomco Fire Systems approved service agency.
After operation, the system should be recharged without delay in order to maintain
protection.
1.
Remove, inspect and recharge all cylinders.
2.
Inspect the piping system and ensure pipe supports are still secure.
3.
Inspect all components, including nozzles, switches, detectors, alarms, etc. Replace
all equipment that has been damaged, or that has been exposed to direct flame or
excessive heat from the fire.
4.
Reinstall system in accordance with the Installation Instructions.
5.
Verify and test system in accordance with this manual and Section 4.8 of NFPA 12.
6.
Check the hydrostatic test date on cylinders and flex hose. If more than 5 years have
elapsed from the date of last test, the cylinders will require hydrostatic testing.
5-4
SYSTEM MAINTENANCE
In order to ensure that the system has not been tampered with and is in a fully
operational condition, it must be inspected and tested on a regular basis by trained,
competent, service personnel. In accordance with NFPA 12: Standard on Carbon Dioxide
Extinguishing Systems, insurance and other code requirements, all carbon dioxide systems
should be thoroughly inspected and tested annually. It is recommended that a service and
maintenance contract be established with a Tomco Fire Systems approved service agency.
All persons who may be expected to inspect, test, maintain, or operate carbon dioxide fire
suppression systems should be thoroughly trained, and be kept thoroughly trained, in the
functions they are expected to perform.
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5-4.1 Monthly Inspections
1.
Check system components for mechanical damage and tampering. All system lead
and wire seals, or similar, should be intact.
2.
Ensure that there are no obstructions that would prevent system operation, or prevent
proper distribution of carbon dioxide from discharge nozzles.
3.
Verify that egress is clear to allow safe evacuation of personnel from the hazard area,
and safe access to the manual controls.
2.
Check that all electrical circuits show normal. If a control panel is utilized, power lamp is
on and all other lamps are off.
5-4.2 Semi Annual Inspections
1.
Perform all the monthly inspections.
2. Check if there have been any changes in the shape, size, contents or use of the
protected space. Any changes will necessitate a review of the system design.
3. Check the cylinder contents (weight), this may be done by using a platform or beam
scale or an approved liquid level gauge. Record weight on the cylinder tag or in the log
book. If the cylinder has a loss in net weight of more than 10 percent, it should be
recharged or replaced. The cylinder full weight is indicated on the valve.
Check the date of the last hydrostatic test. If more than 12 years have elapsed since the
last test, the cylinders should be discharged and retested before being returned to service.
(It is recommended that a full discharge test be performed when cylinders are emptied for
hydrostatic testing.)
4.
Examine cylinders, piping and nozzles for any evidence of corrosion or other physical
damage.
5.
Check cylinder bracketing, piping, pipe hangers and straps to ensure all are secure
and suitably supported. This is particularly important where shock and vibration are
encountered as a normal part of the environment (e.g. on board ships, etc.).
6. Ensure discharge nozzles are still located as originally installed, that the nozzle
discharge orifices are clear and unobstructed, and that the nozzles are properly
positioned and aligned. Ensure seals are used where necessary.
7.
Remove the manual actuators from all cylinders that they operate and operate the
hand lever. The actuator should operate freely and the operating stem should travel 1/8inch (3.2 mm).
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Caution: When two actuators are connected together, both actuators must be
removed from the equipment they control, before testing.
8.
If a remote manual cable control is used, ensure the actuators are removed from the
equipment they control, and operate all cable controls by the pulling cable at the pull
box to ensure freedom of movement and travel. Both main and reserve actuator cables
should be operated, if used. Check the condition of conduit and corner pulleys.
9.
Inspect and clean all fire detectors. Check the sensitivity and adjust smoke detectors.
10. If the system is automatically electrically actuated, disconnect the solenoid actuators
and manual actuators from the cylinder valves, then:
a) Operate all electric Initiating devices (detectors, manual stations, etc.), one at a
time, and ensure the respective actuators operate. There will be a click sound
when the solenoid operates. This check should be made for both main and reserve
banks of cylinders, if used. Reinstall the solenoid and manual actuators after all
testing is completed.
Alternatively, unplug the cable connectors from all solenoid valves and insert light
bulbs In the cable connectors. The bulbs will light when each circuit is energized.
Also, the operating stem of the manual actuator should travel down 1/8-inch (3.2
mm).
b) Verify that all electric alarm signals function, and that all audible devices can be
heard and all Illuminated devices can be seen throughout the protected space.
This should be done in the normal working environment with normal background
noises and lighting in place.
c) If the system has an extinguishment control panel, refer to the panel
manufacturer’s instruction manual for maintenance procedures.
11. Confirm operation of all auxiliary and supplementary components such as time delays,
pressure operated switches, release trips, damper releases, shut-off valves, etc. by
manual operation, where possible. Pressure operated time delays and gas operated
sirens should be checked using a carbon dioxide portable extinguisher as a
pressurizing source.
Ensure all equipment is reset and all components are installed and left in the normal
Standby condition on completion of testing.
5-4