EN 12259-14:2020+A2:2024

SLOVENSKI STANDARD
01-oktober-2024
Nadomešča:
SIST EN 12259-14:2020+A1:2022
Vgrajene naprave za gašenje - Sestavni deli sprinklerskih sistemov in sistemov s
pršečo vodo - 14. del: Sprinklerji za uporabo v stanovanjih (vključno z dopolnilom
A2)
Fixed firefighting systems - Components for sprinkler and water spray systems - Part 14:
Sprinklers for residential applications
Ortsfeste Brandbekämpfungsanlagen - Bauteile für Sprinkler- und Sprühwasseranlagen -
Teil 14: Sprinkler für die Anwendung im Wohnbereich
Installations fixes de lutte contre l'incendie - Composants des systèmes d'extinction du
type sprinkleur et à pulvérisation d'eau - Partie 14: Sprinkleurs pour applications
résidentielles
Ta slovenski standard je istoveten z: EN 12259-14:2020+A2:2024
ICS:
13.220.10 Gašenje požara Fire-fighting
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 12259-14:2020+A2
EUROPEAN STANDARD
NORME EUROPÉENNE
August 2024
EUROPÄISCHE NORM
ICS 13.220.20 Supersedes EN 12259-14:2020+A1:2022
English Version
Fixed firefighting systems - Components for sprinkler and
water spray systems - Part 14: Sprinklers for residential
applications
Installations fixes de lutte contre l'incendie - Ortsfeste Brandbekämpfungsanlagen - Bauteile für
Composants des systèmes d'extinction du type Sprinkler- und Sprühwasseranlagen - Teil 14: Sprinkler
sprinkleur et à pulvérisation d'eau - Partie 14: für die Anwendung im Wohnbereich
Sprinkleurs pour applications résidentielles
This European Standard was approved by CEN on 4 November 2019 and includes Amendment 1 approved by CEN on 13 March
2022 and Amendment 2 approved by CEN on 14 July 2024.

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. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists 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.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATIO N

EUROPÄISCHES KOMITEE FÜR NORMUN G

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12259-14:2020+A2:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Construction and performance . 8
4.1 General . 8
4.2 Dimensions and pressure rating . 8
4.3 Nominal operating temperature . 8
4.4 Operating temperatures . 9
4.5 Water flow and distribution . 9
4.6 Function . 10
4.7 Fire Test . 10
4.8 Strength of sprinkler body and deflector . 11
4.9 Strength of release element. 11
4.10 Leak resistance and hydrostatic strength . 12
4.11 Heat exposure . 12
4.12 Corrosion . 13
4.13 Water hammer . 13
4.14 Thermal response . 14
4.15 Resistance to vibration . 14
4.16 Resistance to impact . 14
4.17 Resistance to low temperature . 14
4.18 Resistance to heat . 14
4.19 Test conditions . 14
5 Marking . 14
5.1 General . 14
5.2 Identification number . 14
5.3 Nominal operating temperature and year of manufacture . 15
5.4 Manufacturing location . 15
5.5 Heat sensitive element supplier . 15
5.6 Protective covers . 15
5.7 Sidewall sprinklers . 15
5.8 Concealed sprinklers . 15
5.9 Removable recessed housing . 16
6 Instruction charts. 16
6.1 General . 16
6.2 Installation Instructions . 16
Annex A (normative) Conditions for tests . 18
Annex B (normative) Water flow test . 19
Annex C (normative) Water distribution test . 21
Annex D (normative) Fire test . 27
Annex E (normative) Function test . 37
Annex F (normative) Strength of sprinkler body and deflector . 39
Annex G (normative) Strength of release elements test . 41
Annex H (normative) Leak resistance tests . 44
Annex I (normative) Heat exposure . 45
Annex J (normative) Glass bulb sprinkler thermal shock test . 46
Annex K (normative) Exposure and corrosion tests . 47
Annex L (normative) Water hammer test . 51
Annex M (normative) Thermal response test. 52
Annex N (normative) Vibration test . 57
Annex O (normative) Impact test . 58
Annex P (normative) Resistance to low temperature test . 59
Annex Q (normative) Resistance to high temperature test . 60
Bibliography . 61
European foreword
This document (EN 12259-14:2020+A2:2024) has been prepared by Technical Committee CEN/TC 191
“Fixed firefighting systems”, the secretariat of which is held by BSI.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by February 2025, and conflicting national standards
shall be withdrawn at the latest by February 2025.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document includes Amendment 1 approved by CEN on 13 March 2022 and Amendment 2
approved by CEN on 14 July 2024.
This document supersedes !EN 12259-14:2020+A1:2022".
The start and finish of text introduced or altered by amendment is indicated in the text by tags !"
and #$.
#In comparison with EN 12259-14:2020, technical modifications have been made to clarify the types
of sprinkler seal that are covered by this document in Amendment 1. In Amendment 2 the pressure
values in C.1.1 and C.2.1 were corrected as well as the unit for the force increase in G.1.$
It is included in a series of European Standards planned to cover:
— automatic sprinkler systems (EN 12259 and EN 12845);
— gas extinguishing systems (EN 12094);
— powder systems (EN 12416);
— foam systems (EN 13565);
— hydrant and hose reel systems (EN 671);
— smoke and heat control systems (EN 12101).
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: 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, Turkey and the
United Kingdom.
1 Scope
!This document specifies requirements for the construction and performance of residential
sprinklers as well as test methods for their type approval, which are operated by a change of state of an
element or bursting of a glass bulb under the influence of heat and incorporating the following types of
water seals:
— conical metal spring with a PTFE gasket or coating;
— metal cap or disc with PTFE gasket or coating;
— copper gasket, with or without a PTFE coating.
Sprinklers in accordance with this document are only used in automatic sprinkler systems for domestic
and residential applications as defined in EN 16925."
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 12259-1:1999+A1:2001 ", Fixed firefighting systems — Components for sprinkler and water
spray systems — Part 1: Sprinklers
EN 13501-1, Fire classification of construction products and building elements - Part 1: Classification
using data from reaction to fire tests
EN 16925, Fixed firefighting systems - Automatic residential sprinkler systems - Design, installation and
maintenance
ISO 7-1, Pipe threads where pressure-tight joints are made on the threads — Part 1: Dimensions,
tolerances and designation
ISO 49, Malleable cast iron fittings threaded to ISO 7-1
ISO 65, Carbon steel tubes suitable for screwing in accordance with ISO 7-1
ISO 5658-2:2006, Reaction to fire tests — Spread of flame — Part 2: Lateral spread on building and
transport products in vertical configuration
ISO 5660-1:2015, Reaction-to-fire tests — Heat release, smoke production and mass loss rate — Part 1:
Heat release rate (cone calorimeter method) and smoke production rate (dynamic measurement)
UL 723, Standard for test for surface burning characteristics of building materials
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at https://www.electropedia.org/

!As impacted by EN 12259-1:1999+A1:2001/A2:2004 and EN 12259-1:1999+A1:2001/A3:2006."
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
concealed sprinkler
unit (pre-assembled or assembled on site) consisting of a nozzle with a thermally sensitive sealing
device, a housing and a cover plate, that ensures that the sprinkler will be installed with all or part of
the thermally sensitive element behind the plane of the ceiling
3.2
recessed sprinkler
unit (pre-assembled or assembled on site) consisting of a nozzle with a thermally sensitive sealing
device and a housing, that ensures that the sprinkler will be installed with all or part of the thermally
sensitive element above the plane of the ceiling
3.3
discharge coefficient
known as K-factor
coefficient of discharge in the formula,
Q = K √ p (1)
where
Q is the flow in litres per minute, and
p is the pressure in bar
3.4
dry-type sprinkler
nozzle with a thermally sensitive sealing device secured in an extension nipple that has a seal at the
inlet end to prevent water from entering the nipple until the sprinkler operates
3.5
flush sprinkler
unit consisting of a nozzle with a thermally sensitive sealing device and housing, that ensures that the
sprinkler will be installed partly behind, but with the temperature sensitive element before, the finished
plane of the ceiling or wall
3.6
heat responsive element
portion of a sprinkler that breaks, melts, or otherwise functions to initiate the automatic operation of
the sprinkler when exposed to sufficient heat
3.7
heptane
commercial grade heptane having the following characteristics:
a) minimum Initial Boiling Point of 88 °C;
b) maximum Dry Point of 100 °C; and
c) specific Gravity (15,6 °C/15,6 °C) of 0,68 - 0,73.
3.8
orifice
opening that controls the amount of water discharged from a sprinkler at a given pressure
3.9
pendent sprinkler
nozzle with a thermally sensitive sealing device intended to be installed so that its deflector is located
below the orifice and the water flows downward through the orifice
3.10
residential sprinkler
nozzle with a thermally sensitive sealing device intended to be installed only in residential occupancies
as defined in EN 16925
3.11
sidewall sprinkler
nozzle with a thermally sensitive sealing device intended for installation on or near the wall
3.12
upright sprinkler
nozzle with a thermally sensitive sealing device intended to be installed so that its deflector is located
above the orifice
3.13
response time index
RTI
½ ½
measure of the thermal sensitivity of the sprinkler expressed in (meters.seconds) (m×s)
Note 1 to entry: Unlike in EN12259–1, the RTI value is calculated without considering the conductivity factor
3.14
design lower tolerance limit
DLTL
glass bulb supplier’s specified and assured lowest lower tolerance limit
3.15
design upper tolerance limit
DUTL
sprinkler supplier’s specified and assured highest upper tolerance limit
3.16
fusible link sprinkler
nozzle with a thermally sensitive sealing device which opens when an element provided for that
purpose melts
3.17
glass bulb sprinkler
nozzle with a thermally sensitive sealing device which opens when a liquid-filled glass bulb bursts
3.18
mean design service load
sprinkler supplier’s specified and assured highest mean service load for any batch of 10 or more
sprinklers
3.19
mean design strength
glass bulb supplier’s specified and assured lowest mean bulb strength for any batch of 55 or more bulbs
3.20
horizontal sprinkler
nozzle with a thermally sensitive sealing device in which the nozzle directs the water horizontally
3.21
lower tolerance limit
LTL
glass bulb lowest strength determined by test and statistical analysis of a batch of 55 or more bulbs
3.22
supplier
company responsible for the design, manufacture and quality assurance of a product
3.23
upper tolerance limit
UTL
highest service load determined by test and statistical analysis of a batch of 20 or more sprinklers
3.24
frame arms
part of a sprinkler that maintains the thermally sensitive element in load bearing contact with the
sprinkler head valve
4 Construction and performance
4.1 General
Sprinklers shall only be assembled in such a way that adjustment or dismantling will result in
destruction of an element of construction.
It shall be possible to remove the cover of a concealed sprinkler without having to use special tools, e.g.
for visual inspections.
4.2 Dimensions and pressure rating
4.2.1 Dimensions
Nominal thread sizes shall be suitable for fittings threaded in accordance with ISO 7-1.
It shall be possible for a sphere of (5,0 +0,01/-0) mm diameter to pass through the orifice of the
sprinkler.
4.2.2 Pressure ratings
A residential sprinkler shall have a maximum operating pressure of at least 12 bar.
4.3 Nominal operating temperature
When tested in accordance with “Test to determine operating temperatures of fusible link sprinklers
and glass bulb sprinklers” of !EN 12259-1:1999+A1:2001", sprinklers shall operate at a
temperature within the range:
o
T = [t ± (0,035 t +0,62)] C
test
where
t is the nominal operating temperature.
When cover plates are tested in accordance with the “Test to determine operating temperatures of
fusible link sprinklers and glass bulb sprinklers” of !EN 12259-1:1999+A1:2001", cover plates
shall operate at a temperature within the range:
o
T = [t ± (0,035 t +0,62)] C
test cover
where
t is the nominal operating temperature of the cover.
cover
This temperature t shall be 8 °C to 20 °C lower than the nominal operating temperature of its
cover
sprinkler head.
4.4 Operating temperatures
The temperature classification, temperature rating, and colour coding of a residential sprinkler shall be
as specified in Table 1.
Table 1 — Nominal operating temperatures and colour codes
Glass bulb sprinklers Fusible link sprinklers
Nominal operating Liquid Nominal operating Frame arms
temperature colour code temperature within colour code
°C range
°C
57 Orange 57 to 77 uncoloured
68 Red 80 to 107 white
79 Yellow
93 Green
100 Green
4.5 Water flow and distribution
4.5.1 K-factor
The nominal K-factor shall be specified by the supplier. The K-factor of the sprinklers shall be within the
nominal value ± 5 % for other than dry sprinklers and ± 8 % for dry sprinklers, when determined in
accordance with Annex B.
4.5.2 Water distribution
4.5.2.1 Water distribution test – Horizontal surface
When installed in accordance with the installation instructions and tested as described in C.1 a
residential sprinkler shall distribute water over a horizontal surface so that the discharge density for
any pan within the design area (the maximum area the sprinkler is intended to protect) shall be at least
0,8 mm/min except that:
a) no more than 2 pans (0,5 m × 0,5 m) or not more than 4 pans (0,3m × 0,3m) for each quadrant shall
be allowed to be at least 0,6 mm/min for upright and pendant sprinklers; and
b) no more than 8 pans (0,3 m × 0,3 m) or 3 pans (0,5 m × 0,5 m) shall be allowed to be at least
0,6 mm/min for each half (split along the sprinkler centreline) of the maximum area a sidewall
sprinkler is intended to protect
4.5.2.2 Water distribution test – Vertical surface
When installed in accordance with the installation instructions and tested as described in C.2, a
residential sprinkler shall distribute water in a uniform manner over vertical surfaces as follows:
a) walls within the coverage area shall be completely wetted to at least within 711 mm of the ceiling
with one sprinkler discharging water at the specified design flow rate;
b) for square coverage areas, each wall within the coverage area shall be wetted with at least 5 % of
the sprinkler flow; for rectangular coverage areas, each wall within the coverage area shall be
wetted with a proportional water amount based on 20 % of the total sprinkler discharge in
accordance with the following formula

WW – 20 % (D / P) (2)
where
WW is required amount of water collected on a wall, in %;
D is wall length, in m;
P is total perimeter of coverage area, in m.
4.5.3 Water Impingement Test
When tested in accordance with Annex C and while discharging water at a service pressure of 5,2 bar
less than the maximum operating pressure, a residential sprinkler shall not prevent the operation of an
adjacent residential sprinkler.
4.6 Function
When tested in accordance with Annex E each of the residential sprinklers shall operate at service
pressures of 0,5 bar to the maximum operating pressure. 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. After testing in accordance
with Annex E the sprinkler shall conform to the requirements of 4.5.2.
NOTE In most instances visual examination of the equipment will be sufficient to establish conformity with the
requirements of 4.5.2.
4.7 Fire Test
When fire tested as described in Annex D a residential sprinkler shall limit temperatures as specified
below when tested at each spacing referenced in the installation instructions. Additionally, a maximum
of two residential sprinklers shall operate and the third sprinkler, located near the 1 000 mm wide
doorway, shall not operate. The sprinklers shall limit temperatures as follows:
a) The maximum temperature measured 76 mm below the ceiling at locations 4 and 5 as illustrated in
Figure D.1, Figure D.2 and Figure D.3 shall not exceed 316 °C.
b) The maximum temperature measured 1,6 m above the floor at location 4 shall not exceed 93 °C.
c) The temperature at the location described in (b) shall not exceed 54 °C for more than any
continuous 2 min period.
d) The maximum ceiling material temperature measured 6 mm behind the finished ceiling surface
shall not exceed 260 °C.
NOTE The thermocouple 76 mm below the ceiling, located above the fire source, is for reference purposes
only.
See Figure D.1, (pendant, upright, flush, recessed pendant, and concealed sprinklers) or Figure D.2 and
Figure D.3 (sidewall sprinklers) for temperature measuring locations.
4.8 Strength of sprinkler body and deflector
4.8.1 Strength of frame
The sprinkler body shall not show permanent elongation of more than 0,2 % between the load-bearing
parts when subjected to twice the average service load when tested in accordance with F.1.
4.8.2 Flow endurance
A residential sprinkler shall withstand for 30 min, without evidence of cracking, deformation, or
separation of any part when tested in accordance with F.2.
4.8.3 Strength of deflector
The sprinkler deflector and its supporting parts shall withstand an applied force of 70 N without
permanent deformation when tested in accordance with F.3.
4.9 Strength of release element
4.9.1 Glass bulb sprinklers
When evaluated and tested in accordance with Annex G, glass bulb sprinklers shall have:
a) a mean design bulb strength of at least six times the mean design service load;
b) a mean bulb strength not less than the mean design bulb strength;
c) a mean service load not more than the mean design service load;
d) a design lower tolerance limit (DLTL) on the distribution curve of at least two times the design
upper tolerance limit (DUTL) of the service load distribution curve;
e) an upper tolerance limit (UTL) less than or equal to the design upper tolerance limit (DUTL);
f) a lower tolerance limit (LTL) greater than or equal to the design lower tolerance limit (DLTL) see
Figure 1.
Key
1 service load distribution curve
2 bulb strength distribution curve
3 mean service load
4 mean bulb strength
5 upper tolerance limit (UTL)
6 lower tolerance limit (LTL)
A number of samples
B strength (N)
Figure 1 — Graph of service load and bulb strength distribution curves
4.9.2 Fusible link sprinklers
It shall be determined that:
a) the temperature sensitive elements withstand a load of 15 times the maximum design load for a
period of 100 h, without failure; or
b) the estimated time to failure of temperature sensitive elements is not less than 876 600 h at the
design load, when tested in accordance with Annex G.
4.10 Leak resistance and hydrostatic strength
Twenty residential sprinklers shall be tested and not leak when tested in accordance with H.1 and,
subsequently, shall not rupture, operate or release, when tested in accordance with H.2.
4.11 Heat exposure
4.11.1 General
A residential sprinkler shall withstand for 90 days, without evidence of weakness or malfunction, an
exposure to the high-ambient temperature in accordance with I.1.
After the exposure period four sprinklers shall be tested in accordance with E.2; the sprinklers shall
operate such that the waterway is cleared. Any lodgements shall be disregarded. Four sprinklers shall
be leak tested in accordance with H.1. Four sprinklers shall be tested in accordance with “Test to
determine operating temperatures of fusible link sprinklers and glass bulb sprinklers” of
!EN 12259-1:1999+A1:2001".
Additionally, after the exposure period four recessed, concealed and flush sprinklers shall be tested in
accordance with M.2. Their mean operating time shall be equal to or less than a 1,30 multiple of the
mean operating time of the sprinkler tested in accordance with M.2 for compliance with 4.14.2.
4.11.2 Additional heat exposure of glass bulb sprinklers
There shall be no damage to the glass bulb when sprinklers are tested in accordance with I.2.
!deleted text"
4.11.3 Thermal shock
When glass bulb sprinklers are tested in accordance with Annex J, the glass bulbs shall either:
— break correctly on cooling such that the waterway is cleared; or
— remain intact. After immersion when subjected to a function test in accordance with E.2, the
sprinkler shall operate in such way that the waterway is cleared; any lodgements shall be
disregarded.
4.12 Corrosion
4.12.1 Stress corrosion
After being subjected for 10 days to a moist ammonia exposure as described in K.1 a residential
sprinkler having copper alloy parts shall:
a) show no evidence of cracking, delamination, or degradation; and
b) perform as intended when tested as described in K.1.
If the application of a 12 bar water pressure to the inlet of the sprinkler increases the assembly load by
more than 10 %, the additional load is to be applied during the moist ammonia-air mixture exposure
specified in K.1.
4.12.2 Sulphur dioxide corrosion
Residential sprinklers shall be subjected to a sulphur dioxide corrosion test in accordance with K.2.
After exposure, when subjected to a function test in accordance with E.2 the sprinkler shall operate
such that the waterway is cleared; any lodgements shall be disregarded.
4.12.3 Salt mist corrosion
Residential sprinklers shall be subjected to a salt mist corrosion test in accordance with K.3. After
exposure, when subjected to a function test in accordance with E.2, the sprinkler shall operate such that
the waterway is cleared; any lodgements shall be disregarded.
4.12.4 Moist air
Residential sprinklers shall withstand an exposure to moist air atmospheres when tested in accordance
with K.4.
4.13 Water hammer
Sprinklers shall not leak when subjected to pressure surges in accordance with Annex L. After the test,
when subjected to a function test in accordance with E.2, the sprinkler shall operate such that the
waterway is cleared; any lodgements shall be disregarded.
4.14 Thermal response
4.14.1 Oven test
When tested in accordance with M.1, upright, pendent and horizontal sprinklers, other than flush,
recessed and concealed sprinklers, shall release within a maximum time which is to be calculated from
the formula in M.1, based on a response time index (RTI) 50.
4.14.2 Room response test
When tested in accordance with M.2, flush, recessed and concealed sprinklers shall release within 75 s.
4.15 Resistance to vibration
A residential sprinkler shall withstand the effects of vibration without deterioration of its performance
characteristics when tested in accordance with Annex N.
4.16 Resistance to impact
A residential sprinkler, except for dry-type sprinklers, shall be tested as described in Annex O and shall
not be damaged or leak.
4.17 Resistance to low temperature
The sprinkler shall not operate before the function test, when tested in accordance with Annex P. After
the low temperature exposure it shall show no visible evidence of damage. Following examination,
when subjected to a function test in accordance with E.2, the sprinkler shall operate such that the
waterway is cleared; any lodgements shall be disregarded.
4.18 Resistance to heat
When tested in accordance with Annex Q, the sprinkler body, deflector and its supporting parts shall
show no significant deformation or breakage.
4.19 Test conditions
For sprinkler testing conditions, see Annex A.
5 Marking
5.1 General
Sprinklers shall be marked with the name or trade mark of the supplier.
An identification number as defined in 5.2 is considered to satisfy this requirement.
5.2 Identification number
A four- to six-character identification number, with no intervening spaces, should be used to identify
the supplier and sprinkler operating characteristics. The number, if used, shall be cast or die-stamped
on the sprinkler deflector or on a visible non-operating part, which is not used to install the sprinkler.
The identification number is permitted to be located behind the cover plate which is removable with
common tools, provided the number will be visible after the sprinkler is installed and the cover plate is
removed.
The identification number, if used, shall consist of one or two characters which identify the supplier,
followed by three or four digits to identify a unique sprinkler identification for orifice size or shape,
deflector characteristic, pressure rating and thermal sensitivity classification.
5.3 Nominal operating temperature and year of manufacture
A residential sprinkler shall be permanently marked on a visible non-operating part with the
temperature rating and year of manufacture.
Exception: The nominal operating temperature may be marked on a visible operating part instead of being
marked on a visible non-operating part.
A sprinkler produced in the last 3 months of a calendar year may be marked with the following year as
the date of manufacture, and one produced in the first 6 months of a calendar year may be marked with
the preceding year as the date of manufacture.
The frame arms of residential sprinklers of the various nominal operating temperatures shall be
coloured in accordance with the colour code designated in Table 1.
Exception No. 1: Frame arm colour identification is not required for painted sprinklers, flush sprinklers, or
similar decorative types.
Exception No. 2: Frame arm colour identification is not required for sprinklers having frangible bulb heat
responsive elements colour coded in accordance with Table 1.
5.4 Manufacturing location
If a supplier produces sprinklers at more than one factory, each sprinkler shall have a distinctive
marking to identify it as the product of a particular factory.
5.5 Heat sensitive element supplier
When sprinklers are made with more than one supplier of the heat sensitive element, i.e. the glass bulb
or the fusible link, each sprinkler shall have a distinctive marking to identify the heat sensitive element
supplier.
5.6 Protective covers
Protective covers, if used, shall be shall be marked to indicate that the cover shall be removed before
the sprinkler system is placed in service. The marking shall be placed on the protective cover so that it
is visible after sprinkler installation.
5.7 Sidewall sprinklers
5.7.1 General
The deflector of a sidewall sprinkler shall clearly show its intended orientation with regard to the
direction of flow. If an arrow is employed, it shall indicate the direction of flow and be accompanied by
the word “FLOW.”
5.7.2 Horizontal sidewall sprinklers
A residential sprinkler intended for horizontal sidewall installation shall be marked with the word
“TOP.”
5.8 Concealed sprinklers
The cover plate for a concealed sprinkler shall be marked with the words: “Do not paint” on the exterior
surface.
Any housing intended for installation with concealed sprinkler assemblies and not attached by the
supplier shall be marked as follows: “FOR USE WITH [SPRINKLER IDENTIFICATION description].”
5.9 Removable recessed housing
An escutcheon intended for installation with recessed and concealed type sprinkler assemblies and not
attached by the supplier shall be marked as follows: “FOR USE WITH [SPRINKLER IDENTIFICATION
NUMBER(S) AND SPRINKLER TEMPERATURE RATING(S)].”
6 Instruction charts
6.1 General
An instruction chart, giving the recommended method of installation and instructions on care and
replacement, shall be available with each type of sprinkler.
6.2 Installation Instructions
Each package of residential sprinklers shall be provided with installation instructions that shall include
the following:
a) coverage area dimensions;
b) minimum water flow rate in accordance with Table 2;
c) K-factor;
d) minimum distance between sprinklers;
e) installation position;
f) distance of sprinkler deflector from ceiling and / or wall;
g) minimum operating pressure;
h) distance between the sprinkler and obstructions;
i) indication as to whether a recessed or concealed sprinkler is vented or unvented;
j) indication whether concealed sprinklers are allowed to be installed in concrete or other solid
materials;
k) a reference to EN 16925 for design and installation; and
l) a statement that the minimum flow for each sprinkler shall be such that both the associated length
and width spacings given in the supplier’s table shall be equal to or greater than the sprinkler’s
length and width spacings in the actual installation.
If the installation instructions do not only refer to EN 16925, it shall be clearly indicated which clauses,
parts and values relate to EN 16925.
Guidance for locating sprinklers away from obstructions shall be provided.
For dry-type sprinklers intended to be installed in dry systems, information shall be provided on the
appropriate sprinkler-fitting compatibility, to minimize the potential to accumulate water, scale, and
sediment of the sprinkler inlet and provide for an unobstructed flow path upon operation.
The minimum water flow rates shall not be less than those given in Table 2 for typical spacings. The
minimum flow rate for a sprinkler shall be the same for single and multiple operating sprinklers.
Table 2 — Minimum sprinkler flow rates for typical spacings
Upright, pendant, recessed pendant, flush, and Sidewall sprinklers
concealed sprinklers
Typical spacing Minimum flow Typical spacing Minimum flow
m l/min m l/min
3,7 × 3,7 28 3,7 × 3,7 28
4,3 × 4,3 38 4,3 × 4,3 38
4,9 × 4,9 49 4,9 × 4,9 49
5,5 × 5,5 62 5,5 × 5,5 62
6,1 × 6,1 76 6,1 × 6,1 76
4,9 × 5,5 55
4,9 × 6,1 61
5,5 × 6,1 69
!deleted text" The maximum spacing shall not be more than 37,2 m . If another spacing as stated
above is used, the minimum flow shall not be less than that required to provide a minimum design
discharge density of 2,1 mm/min.
Annex A
(normative)
Conditions for tests
See 4.19 for the corresponding requirement.
Except where specified otherwise, carry out tests at (20 ± 10) °C. Examine sprinklers for visually
obvious defects before testing.
Annex B
(normative)
Water flow test
See 4.5.1 for the corresponding requirement. Mount the sprinkler on a supply pipe together with a
means of pressure measurement (see Figure B.1). Bleed the air from the pipe assembly using the bleed
valve. Measure the flow rate, by direct measurement of flow rate or by collecting and measuring the
weight or volume of water discharged, for water pressures of 0,5 bar to 6,5 bar at the sprinkler head at
intervals of (1 ± 2 %) bar. The maximum permissible error of the flow measuring device shall be ± 2 %
of the value measured. Calculate the K-factor for each pressure interval from Formula (1):
K = Q / √ P
where
P is the pressure in bar (bar)
Q is the flow rate in litres per minute (l/min)
During the test, pressures should be corrected for difference in height between the gauge and the outlet
orifice of the sprinkler.
Dimensions in millimetres
Key
1 deburred orifice
2 steel tube nominal internal diameter 40 mm, medium weight (in accordance with ISO 65)
3 fitting 10 mm, 15 mm, 20 mm, 25 mm or 32 mm (in accordance with ISO 49)
4 pressure gauge
5 air bleed valve
6 plug or cap
NOTE Tolerances: Pressure gauge ± 2 % or 0,04 bar whichever is the greater, weighing machine ± 1 %.
Figure B.1— Water flow test apparatus
Annex C
(normative)
Water distribution test
C.1 Water distribution test – Horizontal surface
C.1.1 General
See 4.5.1.2 for the corresponding requirement.
Tests are to be conducted on an individual sprinkler using minimum flow rates specified in the
installation instructions. #In addition, for sprinklers having a pressure rating greater than 12 bar,
tests shall be conducted at the maximum spacing specified in the installation instructions using a flow
corresponding to a pressure of 5 bar less than the maximum operating pressure.$ The water
distribution test is to be conducted for 20 min at each flow rate, except a shorter duration can be used if
a pan within the collected area has reached its capacity.
Dry-type sprinklers are to be tested using the shortest available length and the longest available length,
if the K-factor for the longest length deviates by more than 5 % from the shortest available length.
An open horizontal sidewall
...