oSIST prEN 12259-15:2023

SLOVENSKI STANDARD
oSIST prEN 12259-15:2023
01-julij-2023
Vgrajene naprave za gašenje - Sestavni deli sprinklerjev in sistemov s pršečo
vodo - 15. del: Razpršilniki z razpršilnim vzorcem s faktorjem k najmanj K160, z
razširjeno pokritostjo najmanj K80 in za posebno uporabo z nadzornim režimom
Fixed firefighting systems - Components for sprinkler and water spray systems - Part 15:
Spray pattern sprinklers with a k-factor of at least K160, extended coverage sprinklers of
at least K80 and control mode special application sprinklers
Ortsfeste Brandbekämpfungsanlagen– Bauteile für Sprinkler- und Sprühwasseranlagen–
Teil 15: Sprinkler mit einem k-Faktor von mindestens K160, Sprinkler mit erweiterter
Reichweite von mindestens K80 und Sprinkler für spezielle Anwendungen im
Regelbetrieb
Installations fixes de lutte contre l’incendie - Composants des systèmes d’extinction du
type sprinkleur et à pulvérisation d’eau - Partie 15 : Sprinkleurs de type spray avec un
coefficient K d’au moins K160, sprinkleurs à couverture étendue d’au moins K80 et
sprinkleurs en mode contrôle pour applications spécifiques
Ta slovenski standard je istoveten z: prEN 12259-15
ICS:
13.220.10 Gašenje požara Fire-fighting
oSIST prEN 12259-15:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 12259-15:2023


DRAFT
EUROPEAN STANDARD
prEN 12259-15
NORME EUROPÉENNE

EUROPÄISCHE NORM

June 2023
ICS 13.220.20
English Version

Fixed firefighting systems - Components for sprinkler and
water spray systems - Part 15: Spray pattern sprinklers
with a k-factor of at least K160, extended coverage
sprinklers of at least K80 and control mode special
application sprinklers
 Ortsfeste Brandbekämpfungsanlagen - Bauteile für
Sprinkler- und Sprühwasseranlagen - Teil 15: Sprinkler
mit einem k-Faktor von mindestens K160, Sprinkler
mit erweiterter Reichweite von mindestens K57 und
CMSA-Sprinkler
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 191.

If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.


EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 12259-15:2023 E
worldwide for CEN national Members.

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Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Assessment methods and criteria . 6
4.1 Tolerances . 6
4.2 Connections . 6
4.3 Durability of coated sprinklers . 6
4.4 High temperature exposure . 6
4.5 Conductivity (C-Factor). 6
4.6 Sensitivity (Air oven) . 7
4.7 Leak resistance . 9
4.8 Release of the sprinkler at minimum operating pressure . 9
4.9 Nominal operating temperature . 9
4.10 Function . 10
4.11 Size of water passageways . 11
4.12 Sprinkler temperature identification . 11
4.13 Water distribution . 12
4.14 Actual delivered density . 19
4.15 Extinguishing performance . 23
4.16 Discharge coefficient . 23
4.17 Sensitivity (Response time index) . 25
4.18 Frame strength . 26
4.19 Strength of release element - fusible link type . 27
4.20 Strength of release element – bulb type . 28
4.21 Water hammer . 31
4.22 Strength of deflector . 31
4.23 Vibration resistance . 32
4.24 Impact test . 33
4.25 Freezing . 33
4.26 High ambient temperature exposure (90-day test) . 33
4.27 Thermal shock . 34
4.28 Corrosion . 34
5 Marking . 34
6 Manufacturer’s installation instructions . 35
Annex A (normative) Tolerances . 36
Annex B (normative) Extinguishing performance . 37

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European foreword
This document (prEN 12259-15:2023) has been prepared by Technical Committee CEN/TC 191 “Fixed
firefighting systems”, the secretariat of which is held by BSI.
This document is currently submitted to the CEN Enquiry.
EN 12259, Fixed firefighting systems - Components for sprinkler and water spray systems, consists of the
following parts:
— Part 1: Sprinklers;
— Part 2: Wet alarm valve assemblies;
— Part 3: Dry alarm valve assemblies;
— Part 4: Water motor alarms;
— Part 5: Water flow detectors;
— Part 9: Deluge alarm valves;
— Part 12: Pumps;
— Part 13: ESFR sprinklers;
— Part 14: Sprinklers for residential applications.
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Introduction
The response characteristics of classic sprinklers (EN 12259-1 and EN 12259-15) is based on the
measurement of both sensitivity and conductivity (C-factor). For EN 12259-13 sprinkler type (ESFR)
their response characteristics are determined without reference to its conductivity.
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1 Scope
This document specifies requirements and test methods for spray pattern sprinklers with a k-factor of at
least K160, extended coverage (EC) sprinklers of at least K80, extended coverage storage (ECS) sprinklers
of at least K200 and control mode special application (CMSA) sprinklers of all k-factors.
This document does not apply to concealed, conventional, flat spray, flush and recessed sprinklers.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 12259 (all parts), Fixed firefighting systems — Components for sprinkler and water spray systems
1
EN 12259-1:1999+A1:2001, Fixed firefighting systems — Components for sprinkler and water spray
systems — Part 1: Sprinklers
2
EN 12845 (all parts), Fixed firefighting systems — Automatic sprinkler systems — Design, installation and
maintenance
EN 60751, Industrial platinum resistance thermometers and platinum temperature sensors (IEC 60751)
ISO 7-1, Pipe threads where pressure-tight joints are made on the threads — Part 1: Dimensions, tolerances
and designation
3 Terms and definitions
For the purposes of this document, the terms and definitions given in the EN 12845 series and the
EN 12259 series apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1
extended coverage sprinkler
sprinkler with a k-factor of 80 to 200 intended to be installed in accordance with EN 12845-1 to protect
non-storage occupancies
3.2
extended coverage storage sprinkler
sprinkler with a k-factor of 200 and larger and intended to be installed in accordance with EN 12845-2
to protect storage occupancies

1
As impacted by EN 12259-1:1999+A1:2001/A2:2004 and EN 12259-1:1999+A1:2001/A3:2006.
2
This series is under development. Current stage: prEN 12845.
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4 Assessment methods and criteria
4.1 Tolerances
If not given differently in the specific clause below, the tolerances of Annex A shall be applied.
4.2 Connections
4.2.1 Assessment method
The sprinkler connection, e.g. the thread size, shall be assessed by measurements.
4.2.2 Criteria
The thread connections of the sprinkler shall be in accordance with ISO 7-1 or shall be grooved
connections. Alternative connection methods that have been tested and validated for use in fire sprinkler
systems also fulfil 4.2.2.
4.3 Durability of coated sprinklers
4.3.1 Assessment method
Expose 12 coated sprinklers for a period of 90 days in an oven at a temperature of 30 °C below the
nominal operating temperature. At intervals of 7 days, remove the sprinklers from the oven, allow to cool
for 2 h to 4 h and inspect the coating with the unaided eye, corrected for normal vision if necessary.
Return the sprinklers to the oven. At the end of the exposure period, remove the sprinklers from the oven,
cool them again and re-examine the coating.
4.3.2 Criteria
The coating shall show no visible evidence of damage.
4.4 High temperature exposure
4.4.1 Assessment method
The assessment method given in EN 12259-1:1999+A1:2001, Annex O shall be applied.
4.4.2 Criteria
Sprinklers, less operating mechanisms, shall not show significant deformation, blistering, or fracture
following exposure to an elevated temperature as detailed below.
When surfaces of the orifice or frame exhibit significant deformation a discharge coefficient (K-Factor),
(see 4.16) and/or distribution/ADD tests (see 4.13 or 4.14) on exposed samples to validate compliance
with these requirements shall be conducted.
4.5 Conductivity (C-Factor)
4.5.1 Assessment method
The assessment method given in EN 12259-1:1999+A1:2001, N.2 shall be applied.
For sprinklers which could damage or cause problems in a plunge tunnel setup shall be allowed to be
tested in accordance with 4.6.
4.5.2 Criteria
The criteria given in EN 12259-1:1999+A1:2001, 4.15 shall be applied.
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4.6 Sensitivity (Air oven)
4.6.1 Assessment method
This assessment shall only be applied for sprinklers which could damage or cause problems in a plunge
tunnel setup (see 4.5).
Ten previously untested sprinklers of each nominal temperature rating shall be individually operated in
an air oven with the inlet of the sprinkler pressurized to the minimum operating pressure in accordance
with 4.8. The rate-of-temperature-rise within the oven, starting from room temperature 22 °C ± 5 °C, shall
be controlled in accordance with Table 1.
Table 1 —Time vs. temperature points for air oven sprinkler sensitivity test
Time Temperature Time Temperature Time Temperature
min:sec °C min:sec °C min:sec °C
0:15 135 6:00 327 16:00 399
0:30 210 7:00 332 17:00 407
0:45 246 8:00 341 18:00 414
1:00 263 9:00 349 19:00 421
1:15 274 10:00 354 20:00 429
1:30 282 11:00 363 22:00 443
2:00 290 12:00 368 24:00 457
3:00 302 13:00 377 26:00 471
4:00 310 14:00 385 28:00 485
5:00 318 15:00 391 30:00 499
4.6.2 Criteria
New, uncoated sprinklers which cannot be tested in the plunge tunnel shall operate within a time limit
not exceeding the maximum permitted in Table 2 for the respective nominal temperature rating.
New sprinklers having corrosion resistant coatings (decorative, wax, etc.), which cannot be tested in the
plunge tunnel, shall operate within a time limit not exceeding the maximum permitted in Table 3 for the
respective nominal temperature rating.
Sprinklers having corrosion resistant coatings (decorative, wax, etc.), which cannot be tested in the
plunge tunnel, and have been subjected to environmental testing, shall operate within the limits stated in
Table 4.
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Table 2 —Air oven sprinkler sensitivity for new, uncoated sprinklers utilizing the time vs.
temperature Data
Sprinkler nominal Maximum operating Maximum
temperature rating temperature operating time
°C °C min:sec
57 to 76 274 1:15
79 to 107 288 1:45
121 to 149 302 3:00
163 to 191 319 5:00
204 to 246 338 7:30
260 to 302 391 15:00
Table 3 —Air oven sprinkler sensitivity for new sprinklers having corrosion resistant coating
utilizing the time vs. temperature data
Sprinkler nominal Maximum operating Maximum
temperature rating temperature operating time
°C °C min:sec
57 to 76 275 1:34
79 to 107 293 2:11
121 to 149 308 3:45
163 to 191 328 6:15
204 to 246 351 9:22
260 to 302 419 18:45
Table 4 —Air oven sprinkler sensitivity for aged or elevated temperature exposed sprinklers
having corrosion resistant coating utilizing the time vs. temperature data
Sprinkler nominal Maximum operating Maximum
temperature rating temperature operating time
°C °C min:sec
57 to 76 291 2:00
79 to 107 302 3:00
121 to 149 319 5:00
163 to 191 341 8:00
204 to 246 355 10:00
260 and more To be evaluated on a case by case basis.
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4.7 Leak resistance
4.7.1 Assessment method
Subject 4 sprinklers to water pressure of (30 ± 1) bar at the inlet. Increase the pressure from 0 to (30 ± 1)
+1
bar at a rate not exceeding 1 bar/s, maintain the pressure at (30 ± 1) bar for a period of min and then
3
0
allow it to fall to 0 bar. After the pressure has dropped to 0 bar, increase it to (0,5 ± 0,1) bar in not more
+5
than 5 s. Maintain this pressure for 15 s, and then increase it to (10 ± 0,5) bar at a rate not exceeding
0
+5
1 bar/s and maintain it for 15 s. Examine the sprinkler for evidence of leakage during the test.
0
4.7.2 Criteria
The sprinklers shall not show any visible hydraulic leakage.
4.8 Release of the sprinkler at minimum operating pressure
4.8.1 Assessment method
The assessment method given in EN 12259-1:1999+A1:2001, Annex E shall be applied.
4.8.2 Criteria
When tested in accordance with EN 12259-1:1999+A1:2001, E.1 the sprinkler shall open and within 5 s
of release of the thermally sensitive element shall operate satisfactorily. Any lodgement of released parts
shall be cleared within 60 s of the release of the thermally sensitive element.
4.9 Nominal operating temperature
4.9.1 Assessment method
4.9.1.1 Apparatus
Laboratory temperature measuring device having an accuracy of ± 0,25 % of the nominal rating,
calibrated to a depth of 40 mm immersion, for determining temperatures of liquids in bath tests and
operating temperatures. The thermally sensitive part of the sensor (e.g. bulb of a thermometer) shall be
held level with the centre of the sprinkler operating parts (fusible element). To control the temperature
in the thermal bath, a PT100 sensor in accordance with EN 60751 shall be used.
For sprinklers with a nominal operating temperature less than or equal to 80 °C a liquid bath of
demineralized water shall be used. For sprinklers with higher rated elements a liquid bath of glycerine,
vegetable oil or synthetic oil shall be used.
4.9.1.2 Procedure
A total of 10 sprinklers shall be tested. Heat sprinklers in a liquid bath from a temperature of (20 ± 5) °C
to an intermediate temperature of 20 °C ± 2 °C below their nominal operating temperature. The rate of
+2
temperature increase shall not exceed °C per minute. Maintain the intermediate temperature for
20
0
+1
min. Then increase the temperature at a rate of (0,5 ± 0,1) °C per minute until the sprinklers operate
10
0
or up to 2,0 °C above the upper operating limit.
Determine the nominal operating temperature with temperature measuring device having an accuracy
of ± 0,25 % of the nominal temperature rating.
The sprinklers shall be located in the vertical position and totally covered by the liquid to a depth of at
least 5 mm. The geometric centre of the fusible element shall be located not less than 35 mm below the
liquid surface and in alignment with the temperature sensing device. The temperature deviation within
the test zone should be within 0,25 °C. The preferred location of the geometric centre of the fusible
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element and temperature measuring device should be (40 ± 5) mm below the liquid surface. If strutting
occurs during the test the air bath test (see 4.9.1.3) shall be performed.
4.9.1.3 Air bath test
Fifty previously untested sprinklers shall be placed on their threaded inlets in a programmable oven
circulating air at ambient temperature. The temperature in the oven shall be steadily raised to
+01,
20
11,1 °C ± 1,1°C below the nominal temperature rating of the sprinklers over a minute period. Once
0
this temperature is reached, the oven shall be maintained at constant temperature for a period of
60 min ± 5 min. The temperature shall then be raised at a constant rate of 0,5 °C ± 0,3 °C per minute until
the temperature reaches 22 °C ± 2,8 °C above the nominal temperature rating of the sprinklers.
4.9.2 Criteria
Full rupture of heat responsive element in liquid bath (see 4.9.1.2) within a temperature range of
t ± (0,035 t +0,62)] °C, where ‘t’ is the nominal operating temperature, resulting in sprinkler operation.
Sprinklers with nominal temperature ratings of 204 °C or greater shall meet the requirements stated
above, or shall have an actual operating temperature of t + (0,07 t +0,62) °C of the marked nominal
temperature rating. When subjected to the air bath test no partial fracture of a glass bulb or no partial
rupture of a fusible link (i.e. strutting) shall occur.
4.10 Function
4.10.1 Assessment method
Samples shall be selected in accordance with Table 5 and shall be individually installed in their intended
installation position, on a pipe manifold. A typical example of the test apparatus is shown in
EN 12259-1:1999+A1:2001, Figure E.1. Each sample shall be subjected to an inlet water pressure in
accordance with 4.8.2, operated using a suitable heat source, and observed for complete and proper
functioning. A total of 100 sprinklers shall be tested.
Dry sprinklers shall be tested at both the minimum and maximum lengths, and may require a total sample
quantity of up to 200 sprinklers. The pipe manifold shall be modified by installing a plugged tee in place
of the elbow and may be modified further to accommodate long samples of dry sprinklers.
Table 5 — Lodgement
a
Pressure Number of samples
0,5 bar 10
1,7 bar 10
3,4 bar 10
5,2 bar 10
6,9 bar 10
8,6 bar 10
10,3 bar 10
12,1 bar 10
a
A tolerance of ± 5 % applies to all pressures specified in the table.
4.10.2 Criteria
Upon activation of each sample, the discharge coefficient shall be measured to verify complete operation.
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4.11 Size of water passageways
4.11.1 Assessment method
Pass a sphere of diameter 8 mm through each water passage in the sprinkler.
4.11.2 Criteria
The sphere passes freely through each water passage or the sprinkler.
4.12 Sprinkler temperature identification
4.12.1 Assessment method
4.12.1.1 Glass bulb sprinklers
Perform visual inspection to determine the colour of the liquid inside the bulb.
4.12.1.2 Fusible link sprinklers
Perform visual inspection to determine colour painted on frame arm surface. Perform visual inspection
to ensure at least 50 % of frame arm surface is painted the colour, and that paint is visible from all
directions. If percentage of painted colour surface is in doubt, optical measurement shall be applied.
4.12.2 Criteria
Sprinklers shall be in accordance with Table 6. In addition, fusible link sprinklers are painted for at least
50 % of each frame arm surface and the paint is visible from all directions.
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Table 6 — Nominal operating temperatures and colour codes
Glass bulb sprinklers Fusible link sprinklers
Nominal Liquid Yoke arms
Nominal operating
operating
colour code colour code
temperature within range
temperature
° C  ° C
57 orange 57 to 77 uncoloured
68 red 80 to 107 white
79 yellow 121 to 149 blue
93 green 163 to 191 red
100 green 204 to 246 green
121 blue 260 to 302 orange
141 blue 320 to 343 black
163 mauve - -
182 mauve - -
204 black - -
227 black - -
260 black - -
286 black - -
343 black - -
4.13 Water distribution
4.13.1 General
Both test methods given in 4.13.2 and 4.13.3 can be used. It is not necessary to carry out both procedures.
4.13.2 Assessment method 1
4.13.2.1 General
+1 +1
In a test chamber (7 ) m × (7 ) m, sprinklers of the same type shall be mounted in a square
arrangement on a designated pipe. The arms of the sprinkler body shall be aligned parallel to the supply
pipes. The distance between the ceiling and the deflector of upright sprinklers shall be (50 ± 5) mm and
of pendent sprinklers (275 ± 5) mm.
The arrangement of the pipe network and the measuring containers for collecting the water can be seen
in Figure 1 to Figure 3. The water distribution is measured using measuring containers with an opening
area of (500 ± 10) mm × (500 ± 10) mm. The distance between the ceiling and the upper edge of the
containers shall be (2 700 ± 25) mm. The test is carried out according to the conditions met in the
following clauses and the water flowing from the sprinklers is collected until a complete measurement
result is obtained for the measurement area under consideration.
4.13.2.2 Assessment method for spray pattern sprinkler with at least K160
The test shall be carried out in accordance with the test procedure described 4.13.2.1 but in accordance
with the test arrangement shown in Figure 1.
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Dimensions in mm

Key
1 waterflow
2 sprinkler
2
Figure 1 —Arrangement of the K160 / K200 sprinklers at the water distribution (9 m )
The parameters in Table 7 shall be applied for the assessment.
Table 7 — Assessment parameters for spray pattern sprinkler
Flow Measuring Sprinkler
rate area spacing
K-factor
2
l/min m m
160 112,5 9,00 3,0
160 270,0 9,00 3,0
200 270,0 9,00 3,0
4.13.2.3 Assessment method for extended coverage sidewall sprinklers with at least K80
In addition to the test procedure described in 4.13.2.1, extended coverage sidewall sprinklers shall be
tested according to Figure 2 with the following adjustments:
— the distance between the ceiling and the deflector shall be (150 ± 5) mm.
2
— the measurement with a measuring area of 19,5 m (3 m × 6,5 m) shall be carried out in two steps
(see Figure 3).
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The parameters given in Table 8 shall be applied.
Table 8 —Water distribution requirements for individual extended coverage sidewall sprinklers
Distance ceiling /
Flow rate Measuring area
measuring surface
2
mm l/min m
1 500 126,5 20,25 (4,5 m × 4,5 m)
2 700 126,5 20,25 (4,5 m × 4,5 m)
4 100 138,6 20,25 (4,5 m × 4,5 m)
1 500 126,5 19,5 (3,0 m × 6,5 m)
2 700 126,5 19,5 (3,0 m × 6,5 m)
4 100 138,6 19,5 (3,0 m × 6,5 m)

Key
1 waterflow
2 sprinkler
Figure 2 —Layout of the test room for determining the water distribution of extended coverage
2
sidewall sprinklers (20,25 m )
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Dimensions in mm

Key
1 waterflow
2 sprinkler
Figure 3 — Layout of the test room for determining the water distribution of extended coverage
2
sidewall sprinklers (19,5 m )
4.13.2.4 Criteria for test method 1
4.13.2.4.1 Spray pattern sprinkler with at least K160
For sprinklers tested in accordance with 4.13.2.2 the number of containers in which the water volume is
less than 50 % of the water coverage specified in Table 9 shall not exceed the maximum number of
containers specified in Table 9.
Table 9 — Spray pattern sprinkle
...