GW Sprinkler SSP User manual

GW–S Automatic Sprinkler
SSP, SSU, CUP, WUP,HSW, WHEC
Heat & Electrically actuated (by Metron Actuator ®)
Page 1 of 4
GW Sprinkler A/S
Kastanievej 15, Data Sheet No.: GW SH060 1001 B
DK-5620 Glamsbjerg
e-mail: [e-mail] Date: 08.02.2017
web: www.gwsprinkler.com
Nominal Energy (Type 1) 6 millijoules
Resistance Range (ohms)
(1)
0.9 - 1.6
Max. No-Fire Current D.C. (2)
30 sec Pulse
0.050 sec. Pulse
0.15 amp
0.3 amp
Min. Single Firing Current D.C. (3)
10 ms Pulse 0.6 amp 0.9 amp
Recommended Single Firing Current
(4)
1.0 amp
Recommended min. Series Firing Current
(5)
3.0 amp
Max. Monitoring *) Current (continuous) 0.01 amp
SSP SSU CUP WUP HSW WHEC
(pendent) (upright) (conventional) (wall U/P) (window) (horizontal ext. cov.)
DESCRIPTION
The GW-S sprinkler series offers high quality, European manufactured, modern compact design, that meet the rigid test
requirements set out by the world leading approval authorities. The unique GW PTFE / double groove seal in
combination with high end heat responsive frangible glass bulbs guarantee durable operation and reliable performance.
All manufacturing and testing processes are performed strictly in compliance with our quality management system,
certified to ISO 9001.The use of precisely CNC-machined hot forged frames eliminates the risk of porosity.
The heat & electrically operated sprinkler is fitted with an electrically operated Metron Actuator that enables instant and
remote actuation of the sprinkler – typically in combination with a detection system and/or a manually operated switch
box.
APPLICATION
GW-S heat & electrically actuated sprinklers are used in fixed fire protection systems. Care must be exercised that RTI,
orifice size, temperature rating, deflector style and sprinkler type is in accordance with the latest published sprinkler
installation standards i.e. EN12845, CEA4001 or NFPA13.
The GW-S heat & electrically actuated sprinklers are ideal for applications where instant and fully controllable actuation
of single or multiple heads is called for – e.g. applications involving protection of explosive components/environments.
OPERATION (Metron Actuator)
The Metron Actuator is a highly reliable, compact single shot device which can push with a power to weight ratio in
excess of 10,000:1. It operates within milliseconds of receiving the appropriate electrical impulse, a rate which is almost
impossible to achieve with a mechanical source of energy. The short reaction times and high power to weight ratios are
achieved by sophisticated pyrotechnique. Within the metal body of each device, rapid expansion of hot combustion
products generates very high pressures which are used to do mechanical work, in this case to drive a piston forward to
shatter the sprinkler glass bulb.
Its ability to rapidly convert small electric signals into high mechanical work output, its compact size, high reliability and
good environmental resistance makes the Metron Actuator ideal for automatic or remote controlled fire protection
applications.
TECHNICAL SPECIFICATION (Metron Actuator)
See ( ) notes on next page.
*) possibility of the actuator circuit remaining intact after firing must be borne in mind.

GW–S Automatic Sprinkler
SSP, SSU, CUP, WUP,HSW, WHEC
Heat & Electrically actuated (by Metron Actuator ®)
Page 2 of 4
GW Sprinkler A/S
Kastanievej 15, Data Sheet No.: GW SH060 1001 B
DK-5620 Glamsbjerg
e-mail: [e-mail] Date: 08.02.2017
web: www.gwsprinkler.com
NOTES:
(1) The complete device resistance depends on the cable type.
(2) The fusehead may be desensitised when subjected to currents between the max. Monitoring Current and the max.
No-Fire Current (inclusive), and is not guaranteed to fire afterwards.
(3) This is the nominal minimum current to initiate one (1) actuator in the circuit.
(4) This is the recommended minimum current to initiate one (1) actuator in the circuit.
(5) This is the recommended minimum current to initiate more than one (2+) actuator in series in a circuit. It should be applied
for a minimum of 10ms.
SINGLE ACTUATOR FIRING:
The required battery or power supply voltage (AC or DC) may be calculated from the product of the recommended firing
current (I) for the device in question and the total circuit resistance (R) i.e. V = IR.
The Metron Actuator is not polarity sensitive.
MULTIPLE ACTUATOR FIRING:
When more than one actuator is to be fired in a circuit, series firing is recommended as being the simplest method. If
actuators are wired in series it is essential that the minimum series firing current stated in the table above (3.0 amp) is
provided for a minimum of 10ms. In multiple firing circuits all actuators must be of the same electrical sensitivity (e.g.
Type 1). On no account must devices of different manufacture or electrical sensitivity be mixed in the same circuit.
Where parallel firing is considered necessary, extreme care must be taken to ensure balanced resistances and the
*) possibility of the actuator circuit remaining intact after firing must be borne in mind.
DEVICE FUNCTION TIME:
Depends on load and electrical current applied, but is typically 10 to 20ms.
RELIABILITY:
0.999 at 95% confidence level.
ENVIRONMENTAL:
Working Temperature –40°C to + 100°C (for up to 20 hours provided any temperature greater than +70°C occurs
immediately prior to firing). Storage Temperature: –30°C to +70°C.
LIFETIME:
Life at ambient temperature is max. 10 years.
CLASSIFICATION:
Excluded from UN Class 1. The pyrotechnic reaction is fully contained within the metal body and the device is therefore
classed as non-explosive. Metron Actuators can be shipped by any means of transport including post or air with no
special precautions.
APPROVALS:
Metron Actuators have been approved by the LPCB (Loss Prevention Certification Board) and registered with Lloyds
Register of shipping.
MATERIAL:
Piston - machined stainless steel; Case - brass, threaded over part of its length. Environmental resistance is achieved
by the use of a soldered glass/metal seal header and an integral brass septum.
WIRE / CORD:
The standard wire is twisted pair (colour = red),1m length. For applications where electromagnetic fields exist it is
recommended to use special shielded (braided) wires. This must be specified when ordering the sprinkler.
INSULATION:
Before firing, an insulation of no less than 100 megaohms at 100V DC exists between the shunted leads and the body
of the device.
ELECTROSTATIC SENSITIVITY:
Metron Actuators will withstand a discharge of 300 pf at 5 kV minimum between the shunted leads at the body of the
device.

GW–S Automatic Sprinkler
SSP, SSU, CUP, WUP,HSW, WHEC
Heat & Electrically actuated (by Metron Actuator ®)
Page 3 of 4
GW Sprinkler A/S
Kastanievej 15, Data Sheet No.: GW SH060 1001 B
DK-5620 Glamsbjerg
e-mail: [e-mail] Date: 08.02.2017
web: www.gwsprinkler.com
Important electrical current data to be observed when designing electrical circuits incorporating Metron Actuators:
SPRINKLER RANGE
All sprinkler types with 15mm (1/2”) male thread (including 15mm K57 and 15mm K115) can be fitted and supplied with
a Metron Actuator for electrical activation. The bracket that holds the Metron Actuator and the fixing screws are made of
SS304 stainless steel.
OPTIONS
For improved corrosion resistance the GW-S series can be supplied (on request) in superior materials, such as:
stainless steel SS316 or 254SMO, Nickel Aluminium Bronze and even in Titanium. Also available with ENP plating
(electroless nickel plating).
SERVICE LIFE
The service life of electrically actuated sprinklers is limited by the Metron Actuator to a recommended maximum of
10 years. The year of expire is labeled on the Metron Actuator wire. When expired the complete sprinkler shall be
replaced with a new product. It is not possible to replace only the Metron Actuator.
APPROVAL
Electrically operated sprinkler types SSP, SSU and CUP with standard (5mm) or QR (3mm) bulb in temperature 57, 68
and 79°C are approved by LPCB.
Type Material Bulb Temp.
SSP
SSU
CUP
Brass
Chrome
Painted
Std (5mm)
QR (3mm)
57°C
68°C
79°C
LPCB (UK)

GW–S Automatic Sprinkler
SSP, SSU, CUP, WUP,HSW, WHEC
Heat & Electrically actuated (by Metron Actuator ®)
Page 4 of 4
GW Sprinkler A/S
Kastanievej 15, Data Sheet No.: GW SH060 1001 B
DK-5620 Glamsbjerg
e-mail: [e-mail] Date: 08.02.2017
web: www.gwsprinkler.com
INSTALLATION
Install sprinklers in accordance with the latest published sprinkler installation standards i.e. EN12845, CEA4001 or
NFPA13.
Modern sprinklers incorporate highly sensitive and fragile glass bulbs and the utmost care must be taken during
handling and installation not to damage the glass bulb in any way! NEVER install sprinklers that have been dropped,
damaged or fully or partly lacks glass bulb fluid. Install only sprinklers in pipework that is in its final place to prevent
mechanical damage of the sprinklers. Special care shall be exercised to avoid any damage to the Metron Actuator and
the electrical wire.
Use a suitable wrench and make sure only to only apply torque to/via the sprinkler frame spanner flats.
NEVER use the Metron Actuator, actuator bracket or sprinkler frame arms for screwing the sprinkler head into the pipe
joint. The recommended torque to obtain leak tight joint is: 10 – 20 Nm.
Brass sprinklers should only be installed in non-corrosive environments and environments free of ammonia, chloride
vapors and cleaning solutions.
The Metron Actuator is a highly sensitive pyro-electrical device and shall only be connected to a suitable power source
by a professional installer qualified for such electrical installation work. The actuator leads should be encased in a
flexible conduit for attachment to an electrical junction box. Suitable control equipment must be selected based on the
Metron Actuator electrical ratings (see page 1). When considering the power supply for operating the Metron Actuator,
be aware that the Metron Actuator after firing may be an open circuit, short circuit or connected to earth. Therefore it is
essential that the power supply be suitably protected.
Electrical test meters must be limited to 0.01 amps short circuit current to prevent inadvertent operation of the actuator.
This monitoring current must not be exceeded.
MAINTENANCE
The sprinkler system should be inspected and maintained according to e.g. NFPA 25 and EN12845.
Sprinkler heads should be inspected on an annular basis. Ensure that the sprinklers are not used for hanging any
objects, and do not show signs of leakage or corrosion. Sprinklers found to be painted, coated or otherwise altered after
leaving the factory must be replaced. Also replace any sprinkler that has a cracked bulb or has lost liquid from its bulb.
Dusty sprinklers can be gently cleaned using a feather duster – or similar gentle method/tool.
Automatic sprinklers are recommended to be inspected, tested and maintained by a qualified Inspection Service in
accordance with local requirements and/or national codes.
GW-S sprinklers are supplied in special purpose built styrofoam boxes for maximum protection – and spare sprinklers
should always be stored / kept in the original packaging until installation.
The heat & electrically operated sprinkler head is a one shot device, and cannot be functionally tested. The Metron
Actuator can be supervised using a monitoring current of max. 0,01 amps.
® „Metron Actuator‟ is a registered Trade Mark of Nobel‟s Explosives Company Limited.