SIST EN 17451:2025

SLOVENSKI STANDARD
01-februar-2025
Vgrajene naprave za gašenje - Avtomatski sprinklerski sistemi - Projektiranje,
montaža, vgradnja in preverjanje črpalk
Fixed firefighting systems - Automatic sprinkler systems - Design, assembly, installation
and commissioning of pump sets
Ortsfeste Brandbekämpfungsanlagen - Automatische Sprinkleranlagen - Projektierung,
Zusammenstellung, Montage und Inbetriebnahme von Pumpenaggregaten
Installations fixes de lutte contre l’incendie - Systèmes d’extinction automatique de type
sprinkleur - Conception, assemblage, installation et mise en service des groupes
motopompes
Ta slovenski standard je istoveten z: EN 17451:2024
ICS:
13.220.10 Gašenje požara Fire-fighting
13.220.20 Požarna zaščita Fire protection
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 17451
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2024
EUROPÄISCHE NORM
ICS 13.220.20
English Version
Fixed firefighting systems - Automatic sprinkler systems -
Design, assembly, installation and commissioning of pump
sets
Installations fixes de lutte contre l'incendie - Systèmes Ortsfeste Brandbekämpfungsanlagen - Automatische
d'extinction automatique de type sprinkleur - Sprinkleranlagen - Projektierung, Zusammenbau,
Conception, assemblage, installation et mise en service Montage und Inbetriebnahme von Pumpenaggregaten
des groupes motopompes
This European Standard was approved by CEN on 4 November 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 NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

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 17451:2024 E
worldwide for CEN national Members.

Contents Page
Introduction . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions, symbols and abbreviated terms . 8
3.1 Terms and definitions . 8
3.2 Symbols and abbreviated terms . 10
4 Performance of pump set . 10
4.1 General design principles . 10
4.2 Components . 11
4.2.1 Connections . 11
4.2.2 Pumps and pump driver sizing . 11
4.3 Cooling and by-pass flow . 11
4.4 Fuel tank design . 12
4.5 Fuel, lubricating oil and coolant quality . 13
4.6 Speed of rotation . 13
5 Couplings. 13
5.1 General. 13
5.2 Pump coupling and mounting . 13
5.3 Pump coupling and mounting (submersible motor borehole pump). 13
5.4 Coupling selection . 14
5.5 Coupling installation and alignment . 15
6 Baseplate or mounting frame . 15
6.1 General requirements for pump set installation and fixing considerations . 15
6.2 Load transfer – Vibration . 15
7 Pump set control . 15
7.1 Pump set control panels . 15
7.2 Pump set controller operational requirements . 16
7.2.1 General. 16
7.2.2 Pump start pressure detection . 17
7.3 Electrical pump set operation . 18
7.3.1 Electrical pump controller and short circuit interruption devices . 18
7.3.2 Monitoring and visual indications for electric pump set control panel . 19
7.3.3 Cables between pump set control panel and electric motor . 20
7.4 Monitoring of diesel driven sprinkler pump sets . 20
7.4.1 Monitoring and visual indications diesel pump set control panel . 20
7.4.2 Batteries . 21
7.4.3 Battery chargers . 22
7.4.4 Siting of batteries and chargers . 22
7.4.5 Cables between control panel and diesel engine . 22
8 Electrical drivers . 22
8.1 General. 22
8.2 Environmental conditions for motor sizing . 23
9 Diesel drivers . 23
9.1 General . 23
9.2 Power . 23
9.3 Diesel driver sizing . 23
9.3.1 General . 23
9.3.2 Environmental conditions . 24
9.4 Cooling system . 24
9.4.1 General . 24
9.4.2 Heat exchanger . 24
9.4.3 Air cooled radiator . 25
9.4.4 Air cooled engine . 26
9.5 Exhaust system . 26
9.6 Starting mechanism . 26
9.6.1 General . 26
9.6.2 Automatic starting. 26
9.6.3 Emergency manual start . 26
9.6.4 Manual stop . 27
9.6.5 Periodic manual start test provision . 27
9.6.6 Starter motor . 27
9.7 Pump set engine supplier pre-dispatch testing of diesel engine. 28
9.7.1 General . 28
9.7.2 Test procedure . 28
9.7.3 Test report . 28
10 Handover, installation and commissioning . 28
10.1 General . 28
10.2 Pre-commissioning tests . 29
10.2.1 General . 29
10.2.2 Verification of performance . 29
10.3 Documentation . 30
10.4 Installers’ pre-commissioning checks . 31
10.5 Diesel set commissioning . 32
10.6 Electrical set commissioning . 33
11 Maintenance programme . 34
Annex A (informative) Pump set installation and fixing considerations; examples . 35
Annex B (informative) Information for designers, subject matter experts and to assist evaluation by
authorities . 37
B.1 General . 37
B.2 Information about electrical pump controllers. 37
B.3 Industrial practice and design hints . 37
B.3.1 Intent of the short circuit protection as given in IEC 62091 . 37
B.4 Information about controllers for diesel engine driven fire pumps . 40
B.5 Information about flexible fire pump couplings and flexible connecting shafts for fire
protection service . 40
B.6 Information about diesel engine drives . 40
B.7 Information about electrical motors for fire pumps . 40
Annex C (informative) Guidance on requirements for fire pump set H(Q) performance . 41
Annex D (informative) Typical examples of pump set coupling arrangements . 42
Annex E (normative) Diesel engine equipped with engine control module (ECM) . 43
Bibliography . 44

European foreword
This document (EN 17451:2024) 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 June 2025, and conflicting national standards shall be
withdrawn at the latest by June 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 is related to the following European standards:
CEN/TS 14816, Fixed firefighting systems — Water spray systems — Design, installation and maintenance;
EN 671 (all parts), Fixed firefighting systems — Hose systems;
EN 12094 (all parts), Fixed firefighting systems — Components for gas extinguishing systems;
EN 12101 (all parts), Smoke and heat control systems;
EN 12259 (all parts), Fixed firefighting systems — Components for sprinkler and water spray systems;
EN 12416 (all parts), Fixed firefighting systems — Powder systems;
EN 12845 (all parts), Fixed firefighting systems — Automatic sprinkler systems;
EN 13565 (all parts), Fixed firefighting systems — Foam systems;
EN 14972 (all parts), Fixed firefighting systems — Water mist systems.
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, Türkiye and the United
Kingdom.
Introduction
This document covers:
— the design and assembly of the pump set in accordance with the requirements of
EN 12845:2015+A1:2019;
— identification of essential pump set components;
— the performance characteristics for components used within a pump set;
— performance testing requirements for diesel and electric driven pump sets;
— testing, commissioning and handover;
— documentation.
This document can be applied with the current edition of EN 12845:2015+A1:2019. Any conflicting
requirements that arise by application to other standards would need to be resolved through the
contracts and specifications in each case.
Figure 1 identifies the typical pump set components covered by this document.

Key
1 pump 6 pressure loss detection
2 coupling 7 pump set control panel
3 fuel and fuel tank for diesel driver 8 frame
4 driver 9 test system
5 wiring 10 auxiliary items, e.g. exhaust and cooling pipe
Figure 1 — Example of a typical pump set assembly for a diesel driven unit

1 Scope
This document specifies design, assembly, installation and commissioning requirements for pump sets
for use in sprinkler systems conforming to EN 12845:2015+A1:2019.
Where applicable, this document can also be used for pump sets for other water based fixed firefighting
systems.
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 12259-5:2002, Fixed firefighting systems — Components for sprinkler and water spray systems — Part
5: Water flow detectors
EN 12259-12:2023, Fixed firefighting systems — Components for sprinkler and water spray systems —
Part 12: Pumps
EN 12845:2015+A1:2019, Fixed firefighting systems — Automatic sprinkler systems — Design, installation
and maintenance
EN 12845-2:2024, Fixed firefighting systems — Automatic sprinkler systems — Part 2: Design and
installation of ESFR and CMSA sprinkler systems
EN 12845-3, Fixed firefighting systems — Automatic sprinkler systems — Part 3: Guidance for earthquake
bracing
EN 50342-1, Lead-acid starter batteries — Part 1: General requirements and methods of test
EN 50342-2, Lead-acid starter batteries — Part 2: Dimensions of batteries and marking of terminals
EN 60529:1991, Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989)
EN 60623, Secondary cells and batteries containing alkaline or other non-acid electrolytes — Vented nickel-
cadmium prismatic rechargeable single cells (IEC 60623)
EN 60034-1, Rotating electrical machines — Part 1: Rating and performance (IEC 60034-1)
EN IEC 60947-1:2021, Low-voltage switchgear and controlgear — Part 1: General rules (IEC 60947-1:
2020)
EN IEC 60947-3:2021, Low-voltage switchgear and controlgear — Part 3: Switches, disconnectors, switch-
disconnectors and fuse-combination units (IEC 60947-3:2020)
EN IEC 60947-4-1:2019, Low-voltage switchgear and controlgear — Part 4-1: Contactors and motor-
starters — Electromechanical contactors and motor-starters (IEC 60947-4-1:2018)
ISO 281, Rolling bearings — Dynamic load ratings and rating life

As impacted by EN 60529:1991/A1:2000 and EN 60529:1991/A2:2013.
As impacted by EN IEC 60947-1:2021/AC:2023-01 and EN IEC 60947-1:2021/AC:2024-05.
As impacted by EN IEC 60947-3:2021/AC:2023-01 and EN IEC 60947-1:2021/AC:2024-05.
As impacted by EN IEC 60947-4-1:2019/AC:2020-05 and EN IEC 60947-4-1:2019/AC:2021-04.
ISO 3046-1, Reciprocating internal combustion engines — Performance — Part 1: Declarations of power,
fuel and lubricating oil consumptions, and test methods — Additional requirements for engines for general
use
NEMA MG1-2016, Motors and Generators
3 Terms, definitions, symbols and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 12845 (all parts) and the
following 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/
3.1.1
assembly
design, production and testing of the pump set
3.1.2
coupling
device to transmit torque and power from the driver to the pump
3.1.3
coupling safety factor
safety margin specified by coupling manufacturers to address uncertainties in design
Note 1 to entry: See 5.2.
Note 2 to entry: The abbreviation for coupling safety factor is SFk.
3.1.4
all-elastomeric coupling
linkage that relies solely on an elastomeric material for power transmission
3.1.5
electric motor service factor
design margin to account for higher torque loadings which can be encountered under certain operating
conditions
3.1.6
fail-safe coupling
integrated unit which provides power transmission, damping and flexibility from the driver to the pump,
designed so that the wear or failure of the elastomeric components (if present) of the coupling does not
interrupt the transmission of full torque from the driver to the pump
Note 1 to entry: Examples of fail-safe elastomeric couplings include: gimbal, universal drive shaft, spacer
coupling, claw couplings and flexible couplings.
3.1.7
installation
mounting and commissioning of the pump set in its final location of use in accordance with the pump set
manufacturer’s installation manual and procedures
3.1.8
maintenance
work performed to keep pump sets operable including repairs where required
3.1.9
pressure sensor
element which generates an electrical signal that is transmitted to the pump set control panel according
to the pressure at the point where it is hydraulically connected
3.1.10
pump set
assembled machine which is intended to supply water to automatic sprinkler, water spray and wet riser
systems, typically comprising of pump, electric motor or diesel engine, control panel, partial wiring loom,
drive coupling, mounting frame, baseplate and where required batteries and a fuel tank
3.1.11
pump set installer
entity who is responsible for integrating the fire pump set into the automatic sprinkler, water spray or
wet riser systemin accordance with the pump set manufacturer installation manual and procedures
3.1.12
pump set manufacturer
entity responsible for the design, assembly and build of the pump set
Note 1 to entry: It can be necessary for the pump set manufacturer to establish and manage technical and
commercial relationships with key sub-component or sub-system suppliers.
3.1.13
rigid coupling
component without flexibility which provides power transmission from diesel engines or electric motors
to fire pumps that supply water to fire protection systems
3.1.14
spacer coupling
cylindrical shaped piece introduced between the pump shaft coupling hub and motor shaft coupling hub
to facilitate maintenance
3.2 Symbols and abbreviated terms
For the purposes of this document, the following symbols and abbreviated terms apply.
AC alternating current
ECM engine control module
EMC electromagnetic compatibility
EMF electromagnetic fields
FLC full load current
FLT full load torque
IFN numerical value of the fuel stop power taken as the maximum IFN value in
accordance to ISO 3046-1 for the driver, expressed in kilowatt
IP ingress protection, degree of protection rating as per EN 60529 classifications
L basic rating life time by which ten percent of a population of a product will have failed (see
ISO 281 rolling bearings)
LRC locked rotor current
NPSHr net positive suction head required
NPSHa net positive suction head available
SFk coupling safety factor
VFD variable frequency drive
4 Performance of pump set
4.1 General design principles
The design details covered in this clause address the general principles which shall be considered for all
pump set designs covered by this document. The design of pump set shall be based on the following
information provided to the pump set manufacturer:
— pressure-flow demand characteristics (including any required design margins) [see 4.2.2 and
10.2.2];
— maximum possible suction pressure at pump suction flange;
— NPSHa at low water level in the water storage tank measured at the pump suction flange at the
maximum possible demand flow including 1 m safety margin;
— duration of operation (e.g. for fuel tank sizing; see 4.4);
— driver type (electric or diesel);
— applicable fixed firefighting system design specification according to EN 12845:2015+A1:2019;
— hazard classification according to EN 12845:2015+A1:2019;
— water quality (potable, brackish, sea or filtered) description;
— voltage and frequency available;
— current available;
— starting method;
— type of earthing system;
— altitude of the installation;
— climatic zone with temperature and humidity;
— earthquake classification area.
4.2 Components
4.2.1 Connections
All service interface connection requirements (e.g. water, air, power and signal) shall be provided as part
of the installation instructions to enable the correct installation of the pump set on-site. The connections
shall be easily accessible and located in accordance with EN 12845:2015+A1:2019.
Pipes shall be supported independently of the pump.
Cooling requirements for all pump set components shall be considered.
4.2.2 Pumps and pump driver sizing
Pumps shall be in accordance with EN 12259-12 and shall be driven either by electric motors or diesel
engines, capable of providing at least the power required to comply with the following, plus the safety
margin as described for electrical motors and diesel engines respectively in Clauses 8 and 9:
a) for pumps with non-overloading power characteristic curves, the maximum power required at the
peak of the power curve; or
b) for pumps with rising power characteristic curves, the maximum power for any conditions of pump
load, from zero flow to a flow corresponding to a pump NPSHr equal to 16 m or maximum suction
static head plus 11 m, whichever is greater.
NOTE 16 m was derived from atmospheric pressure (9,98 m atmospheric) plus 6 m (equals 16 m NPSHa),
ignoring frictional losses. Typical tank height, at the time the requirement was written, was considered to be 6 m.
The 11 m was later added to cater for higher suction pressure scenarios (e.g. 5 bar inlet pressure) to ensure the
drive was also sized correctly in that scenario.
Some informative material on Pump H(Q) considerations is given in Annex C.
4.3 Cooling and by-pass flow
Arrangements, such as by-pass flows, shall be made to ensure a continuous flow of water through the
pump sufficient to prevent overheating when it is operating against a closed valve (this minimum
required flow rate is determined by requirements of EN 12259-12:2023, 4.2).
The by-pass system can also be required to maintain the operational temperature of the diesel drivers.
Any additional flow requirements above that required by EN 12259-12, shall be specified by the pump
set manufacturer and shall also be included in the total cooling flow requirement.
Any cooling system pressure regulating devices shall be provided by the pump set manufacturer.
The by-pass flow shall be taken into account in the fixed firefighting system hydraulic calculation and
pump selection. This additional flow shall be provided in addition to the fixed firefighting system flow
figures.
Cooling water shall be taken from the sprinkler system water supply.
NOTE The complete by-pass cooling system can or cannot be supplied as a component of the pump set, as parts
of the by-pass system can be part of the wider system pipework installation in a manner similar to the supply of
electrical cabling. It is essential that suitable connections, equipment and design information are provided to allow
the provision of an adequate cooling system.
4.4 Fuel tank design
The fuel tank capacity shall be sufficient to enable the engine to run on full load, in the most unfavourable
atmospheric and environmental conditions, for the required period of duty.
These durations may be increased if required by the client specification.
Minimum period of duty values, are (as per EN 12845 (all parts) minimum requirements):
— 3 h for LH;
— 4 h for OH (FH1 to FH2);
— 6 h for HHP and HHS (FH3 to FH 5 or HHS1 to HHS 5).
NOTE 1 The hazard classes in brackets are in accordance with prEN 12845-1:2021.
For installations in accordance with EN 12845-2:2024, the minimum fuel tank capacity shall be at least 4
times the required duration of operation (see EN 12845-2:2024, Table 6).
NOTE 2 Attention is drawn to local safety and environmental requirements with regards to storage, handling
and use of fuels.
The fuel tank shall be of welded steel. Where there is to be more than one diesel driven pump set in a
sprinkler system, there shall be a separate fuel tank and fuel feed pipes (inlet and outlet) for each pump
set.
The fuel tank shall be fixed at a higher level than the engine’s fuel pump to ensure a positive head, but not
directly above the engine. Where the tank cannot be installed on the same baseplate or mounting frame
as the pump set unit the fuel lines shall be kept to a minimum length, and installation parameters (e.g.
minimum and maximum height of tank relative to pump set) shall be specified by the pump set
manufacturer.
The fuel tank shall have a fuel level gauge and communicate with the pump set control panel to enable
low fuel level alarms. The low fuel level alarm signal shall be triggered when the fuel level falls to less
than 75% of the required minimum level.
Where required, fuel leak monitoring functionality shall be provided. Any valves in fuel feed pipes
between the fuel tank and the engine shall be sited on or near the fuel tank. Valves controlling the flow of
fuel to the engine shall be monitored for the correct position. They shall not be located on or near the
engine. They shall have an indicator and be locked in the open position or be monitored. Fuel feed pipe
joints shall not be soldered. Metallic pipes and steel hoses shall be used for fuel lines.
The feed pipes shall be situated at least 20 mm above the bottom of the fuel tank. A drain valve of at least
DN15 diameter shall be fitted to the base of the tank.
The fuel tank shall be provided with a suitable vent.
4.5 Fuel, lubricating oil and coolant quality
The diesel fire pump driver manufacturer shall specify the required fuel (e.g. as specified in EN 590),
lubricating oil and coolant characteristics.
Fuel tanks shall be marked with required fuel grade.
Fuel oils used in diesel engines can be subject to detrimental effects from prolonged storage. Therefore,
it is recommended that a proper maintenance schedule is put into place to ensure the fuel remains
suitable for engine operation, efficiency, and longevity.
4.6 Speed of rotation
-1
The nominal driver speed shall not exceed 3 600 min .
The speed of rotation shall be fixed (i.e., not variable speed), after start-up.
5 Couplings
5.1 General
All pumps and drivers shall be fitted with a failsafe (see 3.1.6) coupling.
Couplings shall be sized to meet the required rated power levels for reliable operation, despite being idle
for extended periods.
All elastomeric couplings shall not be used.
Examples of typical coupling arrangements can be found in Annex D.
5.2 Pump coupling and mounting
The coupling between the driver and the pump shall be of a type which ensures that either can be
removed independently. For all pump types except ring-section, submersible and vertical turbine pumps,
this shall be possible in such a way that pump internals (e.g. bearings, seals, impellors) can be inspected
or replaced without affecting suction or discharge piping and permitting access to the impeller without
removing the driver or pump body.
The pump and driver shall be coupled, and the coupling shall be rated for the maximum torque of the
driver. It shall be designed so that if any elastomeric element used in the coupling to absorb vibration
should fail, the pump shall continue to be driven under all operating conditions, except that a right-angle
gear drive can be used for vertical turbine pumps.
Maximum permissible driver size for close coupled end suction pumps shall be 55 kW. The following
pump types shall not be diesel driven: close-coupled pumps, inline pumps (vertical shaft pump with inlet
and outlet inline), multistage inline pumps, and submersible motor borehole pumps.
The pump set shall be designed and assembled in such a way that there a means of safe access for
checking the alignment of couplings when the installation is completed.
This clause does not apply to submersible motor borehole pumps.
5.3 Pump coupling and mounting (submersible motor borehole pump)
Submersible motor borehole pumps shall use a rigid coupling. The rigid coupling shall be made from
stainless steel suitable for the environmental conditions of operation.
Coupling for submersible motor borehole pump motors up to “8 inches” (as per the classifications of
NEMA MG1-2016) shall be in accordance with NEMA MG1 motor shaft specifications (NEMA MG1-2016,
Part 18, Figure 18-18, 18-19, 18-20 for motor shaft shape).
Coupling for submersible motor borehole pump motors greater than “8 inches” shall be with key seat
according to the shaft key of the motor.
Rigid couplings used for submersible motor borehole pumps shall be suitable to assure adequate support
for upward or downward thrusts, created by the submersible motor borehole pump in starting or
running condition.
5.4 Coupling selection
The coupling shall be designed for adverse environmental locations.
Driveshaft bearings shall have a minimum basic life rating of L as determined by the methods of
ISO 281, for at least 5 000 h operating at the maximum load condition of the pump set.
EXAMPLE No more than 10 % of the population have been calculated to have failed after no less than 5 000 h
operating at the maximum load condition of the pump set.
NOTE Attention is drawn to EN ISO 14120, see [10].
The sizing of the coupling shall be based on the rating of the driver not the pump, taking account of the
maximum available torque provided by the driver as specified by the manufacturer.
The selection of the coupling shall withstand the torque between pump and driver. The torque shall be
calculated using the formula:
P× 1000
τ × SFk
ω
2×π×
where
τ
is the numerical value of the torque between pump and driver, expressed
in newton metre;
ω rotational speed; is the numerical value of the driver’s nominal speed,
expressed in 1/min;
P Power; for the diesel engine, is the numerical value of the fuel stop
power taken as the maximum IFN value in accordance to ISO 3046-1 for
the driver, expressed in kilowatt, for the electric motor nominal power in
kilowatt at max frequency of the line supply;
SFk is the numerical value of the coupling safety factor.

SFk values shall be provided by the coupling manufacturer. The pump set manufacturer shall select a
suitably rated coupling. The SFk shall not be less than specified in Table 1.
Table 1 — Minimum SFk values
Electric Diesel engine (5 or Diesel engine (6
Pump gear box
motor fewer cylinders) cylinder)
Pump without right-angle gear
1,25 1,75 1,25
box
Pump with right-angle gear box 1,75 2,5 2,0

=
5.5 Coupling installation and alignment
Couplings shall be installed according to the coupling manufacturer’s instructions. Alignment of the
coupling and shaft shall be within the tolerances defined by supplier.
The preliminary integration (including alignment) of the pump, coupling and driver at the pump set
manufacturer’s premises shall be in accordance with the component suppliers’ specifications.
Final alignment shall be undertaken once the pump set has been fully installed on-site (see Clause 10).
This alignment shall be checked to be in accordance with the pump set manufacturer’s specification after
the pump baseplate or mounting frame is installed, bolted down and all pipework connected.
6 Baseplate or mounting frame
6.1 General requirements for pump set installation and fixing considerations
The mounting arrangements of the pump can require the use of baseplates or mounting frames. Where
baseplates or mounting frames are required the design of the mounting shall be of sufficient strength and
mass to withstand the static and dynamic forces imposed by the pump set. The primary characteristics
to be considered include:
— dimensions;
— alignment;
— weight loading;
— ability to withstand vibration;
— transport;
— fixing details to meet the requirements of the pump set manufacturer’s instructions.
Annex A provides guidance on some affixing scenarios.
NOTE Attention is drawn to any applicable National or European requirements. E.g. for design, structural
integrity, strength and seismic performance standards such as EN 809 [3], EN 1090 (all parts) [4 to 8] and EN 12845
(all parts).
6.2 Load transfer – Vibration
For the load transfer the forces on the key components such as the pump set control panel, couplings,
connections etc. shall be taken into account and also the influence of these units on the vibration and load
transfer. Examples of baseplates or mounting frames design approaches can be seen in Figure A.1.
7 Pump set control
7.1 Pump set control panels
Each pump set shall be monitored and controlled by its dedicated control panel. Except in the case of
submersible motor borehole pumps, the pump set control panel shall be in the same compartment as the
pump set.
It is recommended that pump set control panels should be installed as close as practical to the equipment
it controls.
Functions of the main fire pump set control panel should not be shared with other equipment (e.g.
compressors, jockey pumps or trace-heating). In countries where the practice of sharing control panels
with other equipment is covered by additional requirements made by authorities, the control panel of
the main fire pump unit may be shared with other equipment (e.g. compressors, jockey pumps, or heat
tracing). In this case, a main power cable shall be provided, from which the other equipment shall be
protected by their own circuit protection after the main circuit protection device. The cables and lines in
the control cabinet to the auxiliary units shall be designed to be earth-fault and short-circuit proof or
dimensioned in such a way that they are protected against overload and short-circuit by the main fuse.
The pump set control panel(s) should be installed on the pump set baseplate or mounting frame or be
supplied for wall or floor mounting. In all cases all (excluding those with purely mechanical functions)
components and connections shall be mounted at least 200 mm above the floor.
The pump set control panel shall be easily accessible. Except in the case of submersible pumps, it is
recommended that pump set controls and indicators should be visible and within reasonable reach of the
controlled equipment.
The pump set control panel shall be at least IP 54 rated according to EN 60529:1991 .
The pump set control panel shall be installed considering environmental conditions (and within any
manufacturer specified limits) for factors such as (for example):
— temperature;
— humidity;
— rates of change;
— mechanical vibration.
NOTE 1 Attention is drawn to the need to consider EMC effects associated with the operation of the pump set
(both susceptibility and emissions).
The pump set control panel casing shall be constructed from metal and finished with a corrosion resistant
coating (such a powder coating or paint finishes). The pump set control panel shall be fitted with tamper
proof access control (e.g. a locking device) to prevent unauthorised access or use. The pump set control
panel shall be marked in accordance with the labelling requirements of EN 12845:2015+A1:2019.
In the case of a submersible motor borehole pump, a plate with its characteristics shall be affixed to the
pump set control panel.
NOTE 2 Attentio
...