SIST EN 14597:2006

SLOVENSKI STANDARD
SIST EN 14597:2006
01-marec-2006
Nadzorne naprave za temperaturo in temperaturne omejitve za sisteme za gretje
prostora
Temperature control devices and temperature limiters for heat generating systems
Temperaturregeleinrichtungen und Temperaturbegrenzer für wärmeerzeugende Anlagen
Dispositifs du régulation et de limitation de température pour les systemes générateurs
de chaleur
Ta slovenski standard je istoveten z: EN 14597:2005
ICS:
91.140.10 Sistemi centralnega Central heating systems
ogrevanja
97.120 Avtomatske krmilne naprave Automatic controls for
za dom household use
SIST EN 14597:2006 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 14597:2006

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SIST EN 14597:2006
EUROPEAN STANDARD
EN 14597
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2005
ICS 17.200.20; 97.120

English Version
Temperature control devices and temperature limiters for heat
generating systems
Dispositifs du réglage et de limitation de température pour Temperaturregeleinrichtungen und Temperaturbegrenzer
systèmes de la production de chaleur (chauffage central) für wärmeerzeugende Anlagen
This European Standard was approved by CEN on 1 August 2005.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14597:2005: E
worldwide for CEN national Members.

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EN 14597:2005 (E)
Contents Page
Foreword .3
Introduction.4
1 Scope .8
2 Normative references .8
3 Terms and definitions.9

4 General requirements and general notes on tests .11
5 Rating.11
6 Classification.12
7 Information .12
8 Protection against electric shock .12
9 Provision for protective earthing.12
10 Terminals and terminations .12
11 Constructional requirements .13
12 Moisture and dust resistance.14
13 Electric strength and insulation resistance .14
14 Heating.14
15 Manufacturing deviation and drift.15
16 Environmental stress resulting from transport and storage .16
17 Endurance .16
18 Mechanical strength .16

19 Threaded parts and connections.16
20 Creepage distances, clearances and distances through insulation .16
21 Resistance to heat, fire, and tracking.16
22 Resistance to corrosion .16
23 Electromagnetic Compatibility (EMC) requirements — Emission.16
24 Components .17
25 Normal operation .17
26 Electromagnetic compatibility (EMC) requirements — Immunity .17
27 Abnormal operation.17
28 Guidance on the use of electronic disconnection.17
Annex A X (normative) Actions required .20
Annex B X (normative) Information.23
Annex C X (normative) Maximum permissible time factor values .30
Annex D X (normative) Actuator devices with safety functions in heat generating systems.31
Bibliography.33
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EN 14597:2005 (E)

Foreword
This European Standard (EN 14597:2005) has been prepared by Technical Committee CEN/TC 247 “Building
automation, control and building management”, the secretariat of which is held by SNV.
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 March 2006, and conflicting national standards shall be withdrawn at
the latest by March 2006.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland
and United Kingdom.
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Introduction
This European Standard specifies the functional requirements and tests of control devices which result from
the application in thermal installations. These are e.g. time response and safety aspects of those devices
which enable the safe operation of the installation.
A distinction is made between special requirements for the different operating media air, water, oil and flue
gas.
This European Standard includes purely mechanical constructions, electrical and electronic constructions, and
constructions using software.
There exist "standard applications" for which in the past "typical" devices or combinations thereof have been
used. Some of these devices may also be of purely mechanical construction. Such "standard devices” are
described in this document and identified by letter codes. Their properties and functions are described in
definitions using the language and definitions of the EN 60730 series, so to make sure that existing devices
(using the same letter codes) are not incompatible when tested using this document.
This European Standard has been worked out by a Joint Working Group of CLC/TC 72 and CEN/TC 247,
based on a draft document from CEN/TC 247, following the agreement between these Committees laid down
in CLC(SG)524A:Jan 1996. In line with this, this European Standard uses fully and refers in all aspects of
construction and safety of the devices to EN 60730-2-9, “Automatic electrical controls for household and
similar applications - Part 2: Particular requirements for temperature sensing controls”, and, where needed,
other Parts 2 of the EN 60730 series. It has been found that purely mechanical devices can be
accommodated in this approach without any problem.
The devices described in this European Standard contain the sensors, the control units and the positioning
outputs and, if needed, the actuator devices. The requirements for mechanical safety, electrical safety and
EMC are covered by the standards of the EN 60730 series under the LVD and EMC Directives.
To make sure that when translating this document into other languages no unintentional meaning is attached
to words or words are used as in former practice, the different devices are identified and defined by device
codes consisting of up to four letters. It is strongly recommended that no other meaning than given by the
definitions of this document and of the EN 60730 series is attached to the letter codes.
Care has been taken to rewrite the definitions of the first draft from CEN/TC 247 by using the language of the
EN 60730 series definitions and in such a way that the whole technical content has been retained and no loss
occurred. This ensures that the devices using the device codes from this document will be compatible with
those of the same device code used in the past.
This European Standard has been created for temperature sensing controls for use in heat generating
systems; still it may be useful to quote it for other applications also, either wholly or in part.
Remarks to product committees specifying devices within the scope of this European Standard to
ensure safety of the controlled applications within the scope of their standards:
The attention of product committees specifying devices from this European Standard to cover technical risks
of the operation of applications within the scope of their standards is drawn to the fact that just specifying a
general type of device (e.g. thermal cut-out) according to this document for a specific application does in
general not ensure the safety of the controlled application and may be recipe for disaster. The use of a control
itself does not provide safety, but only if the control is suitable to be used with that application.
It is necessary to assess the risk situation of the controlled application by accepted engineering procedures
(risk and/or fault analysis, FMEA, or other) and to select from the devices with different device codes given in
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this document the device(s) that adequately limit the risk to acceptable levels by controlling or preventing
failures and errors possibly occurring during operation of the application.
In order to limit risk in the controlled applications, controls as specified in Annex AX of this document shall be
used. For control purposes operating controls, and for risk limiting protective controls shall be used. If a
protective control provides also operating control functions, any failure of the operating function or part of the
control should not prevent the protective operation of the control.
This European Standard covers safety related aspects pertaining to the operation and inherent safety of
operating and protective controls for heat generating systems.
This European Standard does not limit construction to single function devices in that multifunctional devices
which could be classified for different functions are allowed within specified conditions. In this way the use of
devices using electronics or software is possible.
In this European Standard the term "heat generating system" may also mean "heat exchanger".
In this European Standard the term "heat generating system" comprises all equipment incorporated in such a
system, for which other standards will normally apply as well. Examples are:
Table 1 — List of standards (non-exhaustive) for equipment using temperature control devices within
the scope of this document
Standard number Title (short version) CEN/TC Remarks
EN 26 Gas-fired instantaneous water heaters for TC 48
sanitary uses production, fitted with
Domestic gas-fired water
atmospheric burners
heaters
EN 89 Gas-fired storage water heaters for the TC 48
production of domestic hot water
EN 30 Domestic cooking appliances burning gas fuel TC 49 Gas cooking appliances
EN 303 Heating boilers with forced draught burners TC 57 Heating boilers
EN 613 Independent gas-fired convection heaters TC 62
Independent gas-fired space
EN 1266 Independent gas-fired convection heaters TC 62
heaters
incorporating a fan to assist transportation of
combustion air and/or flue gases
EN 203 Gas heated catering equipment TC 106 Large kitchen appliances
using gaseous fuels

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Table 1 (concluded)
Standard number Title (short version) Relevant Remarks
CEN/TC
EN 297 Gas-fired central heating boilers TC 109 Central heating boilers using
gaseous fuels
EN 483
EN 656
EN 303-3 Heating boilers — Part 3: Gas-fired central TC 109
heating boilers — Assembly comprising a
boiler body and a forced draught burner
EN 625 Gas-fired central heating boilers — Specific TC 109
requirements for the domestic hot water
operation of combination boilers
EN 677 Gas-fired central heating boilers — Specific TC 109
requirements for condensing boilers
EN 676 Automatic forced draught burners for gaseous TC 131 Gas burners using fans
fuels
EN 525 Non-domestic direct gas-fired forced TC 179 Gas-fired air heaters
convection air heaters for space heating
EN 621
EN 1020
EN 778 Domestic gas-fired forced convection air TC 179
heaters for space heating
EN 1319
EN 1196 Domestic and non-domestic gas-fired air TC 179
heaters — Supplementary requirements for
condensing air heaters
EN 12669 Direct gas-fired hot air blowers for use in TC 179
greenhouses and supplementary non-domestic
space heating
EN 12828 Heating systems in buildings — Design of TC 228
water-based heating systems
ENV 1259 Single burner gas-fired overhead radiant tube TC 180 Non-domestic gas-fired
heaters and non-domestic gas-fired overhead overhead radiant heaters
luminous radiant heaters
EN 416 Single burner gas-fired overhead radiant tube
heaters
EN 419-1 Non-domestic gas-fired overhead luminous
radiant heaters — Part 1: Safety
EN 12952-8 Water-tube boilers and auxiliary installations — TC 269 Shell and water-tube boilers
Part 8: Requirements for firing systems for
pulverized solid fuels for the boiler
EN 12953-7 Shell boilers — Part 7: Requirements for firing TC 269
systems for liquid and gaseous fuels for the
boilers

When referring to this European Standard, product committees are asked to consider to require in
their product standards particular values as necessary for requirements according to Annex BX.
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If this European Standards is used for controls other than for heat generating systems and it is considered
necessary to add or modify requirements, care shall be taken to follow the principles of risk management
contained in the EN 60730 series in order to maintain the overall integrity of the requirements of that series of
standards.
This European Standard refers to EN 60730-2-9 and modifies and replaces requirements of that standard as
appropriate for the purpose of this document. If not stated otherwise all references refer to clauses of
EN 60730-2-9, which is applied in combination with EN 60730-1. Actuator devices are covered by EN 60730-
2-14, if applicable.
NOTE Additional requirements or tests are numbered, starting with a number higher than X.200 and X being the
particular clause number; this is to distinguish them from the requirements and tests of EN 60730-1 and the corresponding
Parts 2, where numbering starts above X.100. All other clause numbers refer to clauses of EN 60730-2-9 and EN 60730-1.
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1 Scope
1.1 This European Standard applies to electrical or non-electrical temperature control devices which are
used to control temperatures within heat generating systems by controlling the supply of energy; it also
applies to limiting devices which ensure that the temperature in heat generating systems will not exceed a
predefined limit.
This European Standard requires operating values, operating times, and operational sequences associated
with the safety of the heat generating system.
This European Standard also applies to controls using NTCs or PTCs thermistors, additional requirements for
which are contained in Annex J of EN 60730-2-9.
This European Standard applies to controls with a rated voltage not exceeding 690 V and with a rated current
not exceeding 63 A.
This European Standard also applies to manual controls if, electrically and/or mechanically, they form an
integral part of automatic controls.
NOTE Requirements for manually operated switches not forming part of an automatic control are contained in
EN 61058-1.
This European Standard does not apply to room thermostats.
1.2 This European Standard does not take into account the response value of an automatic action of the
control, if such a response value is dependent upon the method of mounting the control in the heat generating
system or equipment, in which case the control should be tested together with the heat generator. Where a
response value is of significance for the protection of the user, or surroundings, the value defined in the
appropriate household equipment standard or as determined by the manufacturer applies.
1.3 This European Standard applies also to controls incorporating electronic devices, requirements for
which are contained in Annex DX.
2 Normative references
The following referenced documents are indispensable for the application 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 60730-1:2000, Automatic electrical controls for household and similar use — Part 1: General requirements
(IEC 60730-1:1999, modified)
EN 60730-2-8, Automatic electrical controls for household and similar use — Part 2-8: Particular requirements
for electrically operated water valves, including mechanical requirements (IEC 60730-2-8:2000, modified)
EN 60730-2-9:2002, Automatic electrical controls for household and similar use — Part 2-9: Particular
requirements for temperature sensing controls (IEC 60730-2-9:2000, modified)
EN 60730-2-14:1997, Automatic electrical controls for household and similar use — Part 2-14: Particular
requirements for electric actuators (IEC 60730-2-14:1995, modified)
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3 Terms and definitions
For the purposes of this European Standard, the terms and definitions given in EN 60730-2-9:2002, Clause 2
and the following apply.
3.201
operating differential
EN 60730-1:2000, 2.3.26, applies with the following addition:
for control devices types TB, STB, and ASTB the difference between the fixed limit value and the temperature
at the sensing element at which a manual reset is possible
3.202
temperature sensing control type TR
thermostat (see 2.2.4 and 2.2.6 of EN 60730-1:2000) or modulating thermostat (2.2.104 of EN 60730-2-
9:2002) used in heat generating systems for controlling the temperature of liquid or/and gaseous media, which
has provisions for setting by the user and which, if equipped with an electrical output, provides at least type 1B
action
NOTE In the following this device is designated by the device code TR.
3.203
temperature sensing control type FR
combustion control used in heat generating systems, which is a TR influencing the supply of combustion air
for solid fuels as a function of the temperature of the controlled medium
NOTE Usually these devices are mechanical. If they are electrical, they will be TRs with an additional actuator (see
EN 60730-2-14) for control of the air flow.
3.204
temperature sensing control type TW
operating temperature controller for heat generating systems where, upon response, automatic reset takes
place after the temperature at the sensing element has dropped/risen below/above the adjusted limit value by
the amount of the operating differential, and which, if electrical, provides type 2B action, and whose settings
are unchangeably fixed or can be fixed with a tool or a special tool
3.205
temperature sensing control type STW
automatic reset thermal cut-out (see EN 60730-1:2000, 2.2.8) for heat generating systems where, upon
response, automatic reset takes place after the temperature at the sensing element has dropped/risen
below/above the adjusted limit value by the amount of the operating differential, and which provides type 2P
and type 2K actions, and, if electrical, type 2B action, and whose settings are unchangeably fixed or can be
fixed with a tool or a special tool
NOTE 1 Type 2K action will be considered to be provided if type 2N action is provided.
NOTE 2 This device is typically required to prevent overheating in heat generating systems under abnormal operation
condition; see EN 483 and EN 1020.
3.206
temperature sensing control type ATW
temperature sensing control that is used to limit flue gas temperature in heat generating systems and which is
an STW for monitoring flue gas temperatures
NOTE 1 Such devices are used to monitor the temperature of flue gas located in the flue gas ways of solid fuel boilers
at high temperatures.
NOTE 2 The concept of "extended safety", which is the action of a temperature limiting device to cut out or limit the
temperature of the controlled application should a fault internal to the control occur, has been worked into 2.205 and other
definitions. For the same purpose Notes 8 and 9 have been added to Table AX.1 which contains the requirements for
software class and fault analysis of controls using electronic devices.
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3.207
temperature sensing control type Th
STW used as a thermal bypass protection for solid fuel heat generating systems and which senses the heated
media temperature and operates to cause energy to be carried off by opening a regulating unit, e.g. a valve;
the settings of this control are unchangeably fixed
NOTE Usually this is a mechanical device. This function could also be provided by an STW controlling a valve.
3.208
temperature sensing control type ASW
flue gas flow control for heat generating systems which senses wrong direction of the flue gas flow by
monitoring the flue gas temperature and causes the fuel flow to be cut off. The control provides either an
automatic reset after a minimum time delay of 10 min or type 2J and type 2V actions
NOTE The flue gas flow control is used for monitoring the flue gas passages of gas-fired equipment with natural
draught burners.
3.209
temperature sensing control type TB
operating temperature limiter for heat generating systems which can only be reset manually or with a tool and
which provides at least the following actions: type 2B, type 2J and type 2V and optionally any of the following
actions: type 2F; the settings of this control are unchangeably fixed or can be fixed with a tool or a special tool
3.210
temperature sensing control type STB
thermal cut-out which can only be reset manually or by a tool and which provides at least the following
actions: type 2B, type 2J , type 2K, type 2P and type 2V and optionally any of the following actions: type 2F
and type 2N; the settings of this control are unchangeably fixed or can be fixed with a tool or a special tool
NOTE Type 2K action will be considered to be provided if type 2N action is provided.
3.211
temperature sensing control type ASTB
STB suitable for limiting the flue gas temperature
3.212
two-position control
control device where the manipulated variable can assume only two values (in the case of a contact output,
the manipulated variables "closed" and "open")
3.213
controls with and without auxiliary energy

3.213.1
control with auxiliary energy
control that requires electrical, pneumatic or hydraulic energy for transferring the temperature measured by its
sensing element(s) to an electrical or mechanical output or actuator is termed a system with auxiliary energy
3.213.2
control without auxiliary energy
control that uses a sensing element acting directly on a contact output or an actuator is termed a system
without auxiliary energy
3.214
lockout
shutdown after which a restart can only be accomplished by a manual reset and by no other means
NOTE 1 "reset with tool" is considered to be covered by "manual reset"
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NOTE 2 This is essentially the same as EN 60730-2-5:2002, 2.3.112.1, non-volatile lockout: the condition of a burner
control system following safety shut-down such that a restart can only be accomplished by a manual reset of the burner
control system and by no other means.
3.215
manual reset
reset actuated manually. The actuation of the reset can be made directly on the control or remotely via data
transfer initiated by human action. Regardless of the technical solution the safety level of the manual reset will
not be reduced
3.216
heat generating system
in the following "heat generating system" or "heat generating systems" will be referred to as HGS; for the
purpose of this document the relevant devices will be referred to as "temperature sensing controls for HGS"
3.217
actuator device
consists of an actuator and an actuator element. The actuator device and the actuator element are joined by a
connection element and form a constructional unit
3.218
electrical actuator
2.2.101 of EN 60730-2-14:1997 is applicable
3.219
actuator element
actuated either by an actuator (electrical, pneumatic or hydraulic) or directly by a sensing element
3.220
closing time
defined as the period of time from the moment the actuator closing signal is delivered to the moment the
actuator element reaches the fully closed position
3.221
shut-off pressure
the declared maximum pressure between valve inlet and valve outlet against which the actuator device shuts
off in cases of emergency
3.222
kvs value
denotes the flow through a fully opened valve, measured in m3/h at a differential pressure of 1 bar and using
water of 20 °C ± 10 K
4 General requirements and general notes on tests
EN 60730-2-9:2002, Clause 3 shall apply.
EN 60730-2-9:2002, Clause 4 shall apply.
5 Rating
EN 60730-2-9:2002, Clause 5 shall apply.
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6 Classification
EN 60730-2-9:2002, Clause 6 shall apply, except as follows:
Addition:
NOTE Non-electrical temperature sensing devices are not classified according to clauses relating to purely
electrotechnical requirements, e.g. protection against electrical shock.
6.3 Addition to 6.3.1. 6.3.2, 6.3.3:
The actions shall be declared according to the codes given in Annex AS, Tables AX.1a and AX.1b.
6.4 Addition:
6.4.3.201 -- lockout: - type 2V
7 Information
EN 60730-2-9:2002, Clause 7 shall apply, except as follows:
7.1 A
...