EN 12098-4:2005

Controls for heating systems - Part 4: Optimum start-stop control equipment for electrical systems

This European Standard applies to electronic equipment which controls electrical heating. In this European Standard, equipments are tested to verify conformity with technical characteristics of the materials given by the manufacturer.
NOTE 1   It describes optimal start-stop heating functions. It does not include controls for storage functions and controls for lowest energy cost by controlling the charging of the heating system.
The particular equipment to which this European Standard applies covers both:
·   stand-alone start optimisers or start-stop optimisers, taking priority to the main controller during periods;
·   controllers which contain an integrated optimum start or an optimum start-stop control function;
·   Electrical equipment which includes this function, may includes other.
NOTE 2   Electrical heating systems able to be controlled by these devices (e.g.: direct heating, mixed heating systems including base and supplement, type of emitters, type of storage heating systems, floor heating�) are indicated in the technical documents of the manufacturer. Instructions to adapt the parameters of devices to the systems to which they apply are indicated in these documents. The optimum start-stop function can be integrated within a main control device such as an outside temperature compensated (OTC) controller. In this case the controller would be expected to meet both EN 12098-3 and this document.
It applies both to adaptive and fixed parameters control functions and sets minimum acceptable standards for functions, performance and documentation.

Mess-, Steuer- und Regeleinrichtungen für Heizungen - Teil 4: Ein-/Ausschaltoptimierer für Elektroheizungen

Diese Norm gilt für elektronische Einrichtungen zur Regelung von Elektroheizungen. In dieser Norm werden Einrichtungen geprüft, um die Übereinstimmung mit den technischen Daten der vom Hersteller vorgegebenen Werkstoffe festzustellen.
ANMERKUNG 1   Es werden die optimalen Ein-/Ausschaltfunktionen der Heizung beschrieben. Diese Norm umfasst nicht Mess-, Steuer- und Regeleinrichtungen für Speicherfunktionen und für die niedrigsten Energiekosten durch Gebührenlenkung für die Heizungsanlage.
Diese Norm gilt für spezielle Einrichtungen, die entweder
-   separate Geräte als Einschalt-Optimierer oder Ein-/Ausschalt-Optimierer sind, die gegenüber dem Hauptregler Priorität haben;
-   Regler mit integriertem Einschalt-Optimierer oder Ein-/Ausschalt-Optimierer sind;
-   Elektrische Einrichtungen sind, die diese Funktion umfassen, aber auch andere Funktionen ausführen können.
ANMERKUNG 2   Elektrische Heizsysteme, die durch diese Einrichtungen geregelt werden können (z. B. Direktheizungen, Mischheizungen einschließlich Grund- und Zusatzausrüstung, Heizkörper, Wärmespeicherheizungen, Fußbodenheizungen ) sind in den technischen Unterlagen des Herstellers angegeben. In diesen Unterlagen sind Anweisungen zur Anpassung der Kenndaten der Einrichtungen an die entsprechenden Systeme enthalten. Die optimale Ein-/Ausschalt-Funktion kann in eine Hauptregeleinrichtung, wie z. B. in einem witterungsgeführten Regler (OTC), integriert sein. Dann wird erwartet, dass der Regler sowohl EN 12098-3 als auch diesem Dokument entspricht.
Sie gilt sowohl für adaptive Regler als auch für Regler mit festen Parametern, und sie legt Mindestanforderungen für die Funktionen, das Betriebsverhalten und die Dokumentation fest.
Zusätzliche Funktionen, z. B.:
-   adaptive Funktionen,
-   tarifgeführte Funktionen zur Kostenreduzierung, die für komplexe Tarife von mehr als zwei Tarifgruppen anwendbar sind,
-   Funktionen, die andere Messungen und andere Parameter, die zusätzliche Parameter zur Folge haben, in Betracht

Régulation pour les systèmes de chauffage - Partie 4: Optimiseurs d'intermittences pour les systèmes de chauffage électrique

La présente Norme européenne s’applique aux équipements électroniques de régulation pour les systèmes de chauffage électrique. Dans cette Norme européenne, les appareils sont essayés afin de vérifier la conformité de leurs caractéristiques avec les spécifications données par le fabricant.
NOTE 1   La présente normeElle décrit les fonctions d’optimisation des l’ intermittences du chauffage. Elle ne traite pas des dispositifs de régulation des fonctions de stockage ni de ceux visant à minimiser le coût énergétique en régulant le chargement du des systèmes de chauffage à accumulation.
Les équipements concernés par la présente norme sont :
les optimiseurs autonomes de mise en marche démarrage ou de mise en marche et de mise àdémarrag le et d’arrêt, prenant le pas à certaines périodes sur le régulateur principal ;
oles régulateurs qui intègrent une fonction d’optimisation des intermittences (mise en marche ou mise en marche et à l’arrêtdémarrage ou démarrage et arrêt) ;
les équipements électriques intégrant cette fonction peuvent en comporter d’autres.
NOTE 2   Les systèmes de chauffage susceptibles d’être régulés par ces appareils (par exemple : chauffages directs, chauffages mixtes incluant base et appoint, types d’émetteurs, types de chauffage par accumulation, chauffage par le plancher….) sont indiqués dans les documents techniques du fabricant. Les instructions pour adapter les paramètres des appareils aux systèmes auxquels ils s’appliquent sont données par le fabricant dans ces documents. La fonction d’optimisation peut être intégrée à un dispositif de régulation centralisé comme, par exemple, un régulateur en fonction de la température extérieure (RFTE). Dans ce cas, il est recommandé que le régulateur soit conforme conforme à l’EN 12098-3 et au présent document.aux parties 3 et 6 de la présente norme (voir l’EN 12098-3, « Equipements de régulation en fonction de la température extérieure pour les systèmes de chauffage électrique »).
La norme s’applique aux éq

Regulacijske naprave za grelne sisteme – 4. del: Naprave za optimizacijo delovanja električnih sistemov na osnovi vklop-izklop

General Information

• Status: Withdrawn
• Publication Date: 27-Sep-2005
• Withdrawal Date: 22-Oct-2013
• ICS: 97.100.10 - Electric heaters
• ICS: 97.120 - Automatic controls for household use
• Technical Committee: CEN/TC 247 - Controls for mechanical building services
• Drafting Committee: CEN/TC 247/WG 1 - Standalone controls for heating systems
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 23-Oct-2013
• Completion Date: 23-Oct-2013
• Ref Project: SIST EN 12098-4:2006 - Controls for heating systems - Part 4: Optimum start-stop control equipment for electrical systems

Relations

• Replaced By: EN 12098-3:2013 - Controls for heating systems - Part 3: Control equipment for electrical heating systems
• Effective Date: 30-Oct-2013

Standards Content (Sample)

SLOVENSKI STANDARD
01-marec-2006
5HJXODFLMVNHQDSUDYH]DJUHOQHVLVWHPH±GHO1DSUDYH]DRSWLPL]DFLMRGHORYDQMD
HOHNWULþQLKVLVWHPRYQDRVQRYLYNORSL]NORS
Controls for heating systems - Part 4: Optimum start-stop control equipment for electrical
systems
Mess-, Steuer- und Regeleinrichtungen für Heizungen - Teil 4: Ein-/Ausschaltoptimierer
für Elektroheizungen
Régulation pour les systemes de chauffage - Partie 4: Optimiseurs d'intermittences pour
les systemes de chauffage électrique
Ta slovenski standard je istoveten z: EN 12098-4:2005
ICS:
91.140.10 Sistemi centralnega Central heating systems
ogrevanja
97.120 Avtomatske krmilne naprave Automatic controls for
za dom household use
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 12098-4
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2005
ICS 97.100.10; 97.120
English Version
Controls for heating systems - Part 4: Optimum start-stop control
equipment for electrical systems
Régulation pour les systèmes de chauffage - Partie 4: Mess-, Steuer- und Regeleinrichtungen für Heizungen - Teil
Optimiseurs d'intermittences pour les systèmes de 4: Ein-/Ausschalt-Optimierer für Elektroheizungen
chauffage électrique
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 12098-4:2005: E
worldwide for CEN national Members.

Contents
Page
Foreword .3
Introduction.4
1 Scope .6

2 Normative references .6
3 Terms and definitions.7
4 Functionality.11
5 Graphical symbols and abbreviations.16
6 Requirements .16
7 Test methods.24
8 Marking .28
9 Documentation.29
Bibliography.32

Foreword
This European Standard (EN 12098-4:2005) has been prepared by 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.
This European Standard is one of a series of product standards for "Controls for heating systems". It considers
Definitions, Functionality, Requirements, Test methods, and Documentation electrical heating controls with
optimum start or optimum start-stop functions. This European Standard consists of the following parts:
Part 1: Outside temperature compensated control equipment for hot water heating systems;
Part 2: Optimum start-stop control equipment for hot water heating systems;
Part 3: Outside temperature compensated control equipment for electrical heating systems;
Part 4: Optimum start-stop control equipment for electrical systems;
Part 5: Start-stop schedulers for heating systems.
No existing European Standard is superseded.
The position of this European Standard in the series of standards for mechanical building services is illustrated
below:
Mechanical building services
Ventilation and
Control for mechanical
Heating systems  air conditioning
building services
systems
Individual zone Building management System neutral data
Controls for
control for  products and systems for transmission for
heating systems
HVAC applications HVAC applications HVAC applications

Outside Outside
Optimum start- Optimum start-
temperature temperature
stop control stop control Start-Stop
compensated compensated
equipment for hot equipment for schedulers for
control equipment control equipment
water heating electrical heating systems
for hot water for electrical heating
systems heating systems
heating systems systems
Definitions Functionality Requirements Test methods Documentation

HVAC = Heating, Ventilation, Air Conditioning.
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.
Introduction
Equipment which controls the heating supply in buildings according to outside and/or room temperature is
necessary to reduce the energy consumption and minimise energy cost of heating plants and maintain comfort
level.
Room thermostat Room thermostat
Emitter Emitter
Room Room
T T
temperature temperature
Outside Outside
temperature temperature
T T
Main electrical supply Main electrical supply
Tariff information Tariff information
Main controller Main controller

Figure 1 - Example of start-stop optimiser. It can control main electrical supply to the central, zone or room
level, it can send data to zone or room controllers
Fixed switching times for intermittent scheduling, may not lead to energy saving, minimum cost and comfort
optimisation. A start-stop optimiser schedules switching times in relation with measured variables and tariff (see
Figure 1). Its function brings a high level of energy saving without reduction of desired comfort. It can complete a
main controller like an outside temperature controller (OTC) according to EN 12098-3.
The optimum start-stop function is easy to programme because the user sets the time at which comfort conditions
should apply, rather than the switch-on or switch-off times of the plant.
Occupation Occupation Occupation
Scheduled
occupation
periods
OSS* function OSS* function OSS* function
Main Main Main
controller control. controller
Start function Stop Start function Stop Start function
Heating
operation
Room
temperature
°C
04 8 12 16 20 24 4 8 12 16 20 24 4 8 Time
00 Hour of day
*OSS : Optimum Start - Stop
Figure 2 - Example of relation between occupation, heating and room temperature
NOTE 1 Optimum start-stop function is illustrated by Figure 2. Heating periods are different from scheduled occupation
periods. These differences, due to thermal inertia, depend mainly on heating loads related with temperatures differences. A
start-stop optimiser controls these switchings, using outside and/or room temperatures or their differences in relation to
setpoints.
Adaptive functions are easier to commission because they require fewer installation parameters to be introduced
and no readjustment.
Additionally, a tariff compensated start controller modify the beginning of the optimum start period with respect to
the electrical energy tariff time, as illustrated in Figure 3.
Tariff
Hight
price
Low
level
Nominal
occupation period
Schedule
occupation
periods
Main
controller
Start function Stop
Heating
operation
Room
temperature °C
24 4 8 12 16 20 24
0 0
Hour of day
Figure 3 - A tariff compensated optimiser shift the start period at the end of the lower tariff level period to
minimise cost
Included in this European Standard are the main equipment characteristics which assist in reaching these energy
saving, minimum costs and comfort objectives.
Characteristics which are directly tested include:
• accuracy of sensors;
• part load characteristics.
Characteristics which are required to be indicated by the manufacturer include:
• time constants.
Other characteristics of the equipment are tested indirectly by measuring responses dependent on them, for
example:
• differential;
• dead band.
NOTE 2 This European Standard, therefore, conforms to the requirements and objectives of the interpretative document n° 6
"Energy Economy and Heat Retention" relating to the Construction Product Directive (89/106/EEC).
1 Scope
This European Standard applies to electronic equipment which controls electrical heating. In this European
Standard, equipments are tested to verify conformity with technical characteristics of the materials given by the
manufacturer.
NOTE 1 It describes optimal start-stop heating functions. It does not include controls for storage functions and controls for
lowest energy cost by controlling the charging of the heating system.
The particular equipment to which this European Standard applies covers both:
• stand-alone start optimisers or start-stop optimisers, taking priority to the main controller during periods;
• controllers which contain an integrated optimum start or an optimum start-stop control function;
• Electrical equipment which includes this function, may includes other.
NOTE 2 Electrical heating systems able to be controlled by these devices (e.g.: direct heating, mixed heating systems
including base and supplement, type of emitters, type of storage heating systems, floor heating…) are indicated in the technical
documents of the manufacturer. Instructions to adapt the parameters of devices to the systems to which they apply are indicated
in these documents. The optimum start-stop function can be integrated within a main control device such as an outside
temperature compensated (OTC) controller. In this case the controller would be expected to meet both EN 12098-3 and this
document.
It applies both to adaptive and fixed parameters control functions and sets minimum acceptable standards for
functions, performance and documentation.
Additional functions, e.g.:
- adaptive functions,
- tariff compensated function, for cost optimisation applicable for more complex tariffs, including more than two
levels,
- function taking account other measures and other parameters introduced supplementary parameters
should be able to be the object of requirements and test method as complement to this European Standard.
Safety systems and heating control systems remain unaffected by this European Standard. The actuators are not
covered in this European Standard.
This European Standard does not cover heat emitters.
This control equipment can be connected to a data network.
Input and output signal can be processed by analogue or digital techniques.
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 12098-1:1996, Controls for heating systems - Part 1: Outside temperature compensated control equipment for
hot water heating systems
EN 12098-3:2002, Controls for heating systems - Part 3: Outside temperature compensated control equipment for
electrical heating systems
EN 60529, Degrees of protection provided by enclosures (IP code) (IEC 60529:1989)
EN 60730-1, Automatic electrical controls for household and similar use – Part 1: General requirements (IEC
60730-1:1999, modified)
EN 60730-2-1, Automatic electrical controls for household and similar use – Part 2: particular requirements for
electrical controls for electrical household appliances (IEC 60730-2-1:1989, modified)
EN 60730-2-7, Automatic electrical controls for household and similar use – Part 2: Particular requirements for
timers and time switches (IEC 60730-2-7:1990, modified)
EN 60730-2-9, Automatic el
...