SIST EN 12098-3:2014
(Main)Controls for heating systems - Part 3: Control equipment for electricale heating systems
Controls for heating systems - Part 3: Control equipment for electricale heating systems
This European Standard applies to electronic control equipment for heating systems with direct electrical emission, which do not have an integrated outdoor compensated function and or optimum start/stop function. This control equipment controls and regulates the distribution and/or the generation of heat in relation to the outside temperature and time and other reference variables. This European Standard also covers controllers which contain an integrated optimum start or an optimum start-stop control function. The controller modulates heating or control modes of electronic individual zone or emitter control equipment. Safety requirements on heating systems remain unaffected by this standard. The dynamic behaviour of the local thermostats, sensors, or actuators is not covered in this standard. A multi-distribution and/or multi-generation system needs a coordinated solution to prevent undesired interaction and is not part of this standard.
Mess, Steuer und Regeleinrichtungen für Heizungen - Teil 3: Regeleinrichtungen für Elektroheizungen
Diese Norm gilt für elektronische MSR Einrichtungen für Heizungsanlagen mit direkter elektrischer Wärme-abgabe.
Diese MSR Einrichtungen steuern und regeln die Verteilung und/oder Erzeugung von Wärme in Abhängigkeit von der Außentemperatur und der Zeit sowie sonstigen Führungsgrößen.
Außerdem sind in dieser Norm Regelgeräte behandelt, die eine integrierte Regelfunktion des optimalen Einschaltens oder optimalen Ein und Ausschaltens enthalten. Das Regelgerät beeinflusst den Heizbetrieb oder die Regelungsbetriebsweisen von Einrichtungen der Einzelraumregelung oder Wärmeabgabe-einrichtungen.
Sicherheitsanforderungen an Heizungsanlagen bleiben von dieser Norm unberührt. Das dynamische Verhalten lokaler Thermostate, Sensoren oder Stellglieder ist in dieser Norm nicht behandelt.
Eine Anlage mit mehreren Verteilern und/oder mehreren Erzeugern erfordert eine aufeinander abgestimmte Lösung, um unerwünschte Wechselwirkungen zu vermeiden; eine derartige Anlage ist nicht Teil der vorliegenden Norm.
Régulation pour les systèmes de chauffage - Partie 3: Equipement de régulation pour les systèmes de chauffage électrique
La présente Norme Européenne s'applique aux équipements électroniques de régulation pour les systèmes de chauffage à émission électrique directe.
Ces équipements de régulation servent à la commande et au réglage de la distribution et/ou de la production de chaleur en fonction de la température extérieure et du temps ainsi que d'autres variables de référence.
Cette Norme Européenne couvre également les régulateurs contenant une fonction de commande intégrée de démarrage optimisé ou de démarrage-arrêt optimisé. Le régulateur module les modes de chauffage et de commande des équipements électroniques de régulation de zones ou d'émetteurs.
Les exigences de sécurité relatives aux systèmes de chauffage ne sont pas affectées par la présente norme. Le comportement dynamique des thermostats locaux, des sondes ou des actionneurs n'est pas couvert par la présente norme.
Un système multidistribution et/ou multigénération nécessite une solution coordonnée pour empêcher toute interaction indésirable. Mais un tel système ne relève pas du domaine d'application de la présente norme.
Regulacijske naprave za sisteme ogrevanja - 3. del: Naprave za regulacijo električnih ogrevalnih sistemov
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.JXODFLMRMess, Steuer
und Regeleinrichtungen für Heizungen - Teil 3: Regeleinrichtungen für ElektroheizungenRégulation pour les systèmes de chauffage - Partie 3: Equipement de régulation pour les systèmes de chauffage électriqueControls for heating systems - Part 3: Control equipment for electricale heating systems97.120Avtomatske krmilne naprave za domAutomatic controls for household use91.140.10Sistemi centralnega ogrevanjaCentral heating systemsICS:Ta slovenski standard je istoveten z:EN 12098-3:2013SIST EN 12098-3:2014en,fr,de01-februar-2014SIST EN 12098-3:2014SLOVENSKI
STANDARDSIST EN 12098-4:2006SIST EN 12098-3:20041DGRPHãþD
SIST EN 12098-3:2014
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12098-3
October 2013 ICS 97.100.10; 97.120 Supersedes EN 12098-3:2002, EN 12098-4:2005English Version
Controls for heating systems - Part 3: Control equipment for electrical heating systems
Régulation pour les systèmes de chauffage - Partie 3: Équipement de régulation pour les systèmes de chauffage électrique
Mess-, Steuer- und Regeleinrichtungen für Heizungen - Teil 3: Regeleinrichtungen für Elektroheizungen This European Standard was approved by CEN on 14 September 2013.
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12098-3:2013: ESIST EN 12098-3:2014
EN 12098-3:2013 (E) 2 Contents Page Foreword . 3 Introduction . 4 1 Scope . 5 2 Normative references . 5 3 Terms and definitions . 5 4 Functionality . 12 4.1 Functional objective . 12 4.2 Control equipment functionality . 13 5 Graphical symbols . 13 6 Requirements . 13 6.1 Data protection . 13 6.2 Characteristic heating curve. 13 6.3 Input signal – Sensors . 14 6.4 Controller operation modes . 14 6.5 Frost protection . 15 6.6 Additional functions . 15 6.7 Switching times . 16 6.8 Override mode . 16 6.9 Parameter settings . 16 6.10 Factory settings / default values . 16 6.11 Switching relays . 17 6.12 Electrical requirements . 17 6.13 Degree of protection . 17 6.14 Environmentally induced stress due to temperature . 17 6.15 Materials . 17 6.16 Use of graphical symbols . 18 7 Test methods . 18 7.1 Data Protection . 18 7.2 Controller operation modes . 18 7.3 Controller characteristic heating curve. 18 7.4 Frost protection . 20 7.5 Switching times . 21 7.6 Manual override mode . 21 7.7 Optimum start-stop function . 21 7.8 Set back . 25 7.9 Parameter settings . 25 7.10 Factory settings . 25 7.11 Switching relays . 25 7.12 Electrical test . 25 7.13 Degrees of protection . 25 7.14 Environmental individual stress due to temperature . 25 8 Marking . 25 9 Documentation . 26 9.1 Technical documents . 26 9.2 Technical Specifications . 26 9.3 Instruction installation . 27 9.4 User guideline . 27 Bibliography. 28
SIST EN 12098-3:2014
EN 12098-3:2013 (E) 3 Foreword This document (EN 12098-3:2013) has been prepared by Technical Committee CEN/TC 247 “Building, Automation, Controls 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 April 2014, and conflicting national standards shall be withdrawn at the latest by April 2014. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 12098-3:2002 and EN 12098-4:2005. The following modifications have been made: update of the state of the art of the platform used for the controllers (between first edition – still analogical technology – to day full DDC with µC); test specification has been revised and described more precisely; block diagram for functions has been added; graphical symbols have been added. This standard is for products for Outside Temperature Compensated Controls for mechanical building services and covers Outside Temperature Compensated Controls in residential and non-residential buildings. This standard is part of a series of European Standards for Control for HVAC Applications. This standard, therefore, contributes to the general European policy for energy saving, particularly in the fields of the Construction Products Directive (89/106/EEC) Essential Requirements n°6 "Energy economy and heat retention" (and its interpretative document) and of the Energy Performance of Building Directive (2002/91/CE). EN 12098, Controls for heating systems, consists of the following parts: Part 1: Control equipment for hot water heating systems Part 3: Outside temperature compensated control equipment for electrical heating systems (the present document) Part 5: Start-stop schedulers for heating systems According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 12098-3:2014
EN 12098-3:2013 (E) 4 Introduction Equipment which controls the heating supply in buildings according to outside temperature and time is necessary for the reduction of the energy consumption of heating plants. This equipment can bring about improved comfort and energy savings. For this purpose, an outside temperature compensated function like that provided by an outside temperature compensated (OTC) controller is necessary. This standard describes the main equipment characteristics and functions for reaching energy saving and comfort objectives. This standard covers also controllers which contain an integrated optimum start or an optimum start-stop control function. SIST EN 12098-3:2014
EN 12098-3:2013 (E) 5 1 Scope This European Standard applies to electronic control equipment for heating systems with direct electrical emission, which do not have an integrated outdoor compensated function and or optimum start/stop function. This control equipment controls and regulates the distribution and/or the generation of heat in relation to the outside temperature and time and other reference variables. This European Standard also covers controllers which contain an integrated optimum start or an optimum start-stop control function. The controller modulates heating or control modes of electronic individual zone or emitter control equipment. Safety requirements on heating systems remain unaffected by this standard. The dynamic behaviour of the local thermostats, sensors, or actuators is not covered in this standard. A multi-distribution and/or multi-generation system needs a coordinated solution to prevent undesired interaction and is not part of this standard. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. CEN/TS 15810, Graphical symbols for use on integrated building automation equipment EN 60038, CENELEC standard voltages (IEC 60038) EN 60529, Degrees of protection provided by enclosures (IP code) (IEC 60529) EN 60730-1, Automatic electrical controls for household and similar use — Part 1: General requirements (IEC 60730-1) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 outside temperature compensated controller OTC controller controller optimising and/or regulating the generation of heat in relation to the outside temperature, time and optionally other reference variables (e.g. room temperature) Note 1 to entry: The outside temperature compensated function calculates the heating power in relation to the outside temperature, based on the heating curve. Note 2 to entry: The outside temperature optimum start-stop function calculates the pre-heat time and/or stop time to reach the comfort temperature level in relation with the outside temperature, switch time and several parameters (e.g. room temperature, tariff). 3.2 control equipment equipment, consisting of OTC controller sensor input signals and output signals but not including the sensors and actuating equipment (see Figure 1) SIST EN 12098-3:2014
EN 12098-3:2013 (E) 6
Key 1 OTC controller 2 output signals 3 input signals: reference variables 4 actuating equipment 5 heat generation and distribution Figure 1 — Control equipment for electrical heating systems 3.3 actuating equipment equipment by which the controller affects the controlled variable 3.4 controlled variable heating emitted power 3.5 output signals signals generated by the OTC controller for operating the local thermostat or the actuating equipment 3.6 reference variables (input signal) outside temperature with or without other influences or variables (e.g. room temperature) used to determine the set point of the controlled variable 3.7 outside temperature reference variable that is measured with a sensor fitted outside the building, mainly intended to measure the air temperature 3.8 room temperature resulting temperature in the building arising in comfort, economy or building protection operation mode of the OTC controller Note 1 to entry: Room temperature can be different for individual rooms. 3.9 characteristic heating curve relation between the set point value of the controlled variable (heating) and the reference variables (outside temperature) defined by two or more parameters and depending on operation mode and additional variables SIST EN 12098-3:2014
EN 12098-3:2013 (E) 7 Note 1 to entry: The heating is calculated as a function of the heating curve, based on the outside temperature and the present room temperature set point. 3.10 comfort operation mode mode of operation between the switch-on time and the switch-off time, maintaining comfort room temperature Note 1 to entry: Mode of operation for normally occupied rooms. 3.11 economy operation mode (reduced mode) mode of operation between the switch-off time and the switch-on time, maintaining a reduced room temperature compared to the comfort room temperature 3.12 building protection operation mode mode of operation between the switch-off time and the switch-on time, maintaining a room temperature required for building protection 3.13 automatic operation mode mode of operation of equipment when significant control functions are not overridden by the user Note 1 to entry: During automatic operation mode, operation mode is selected automatically according to the scheduler, actual date and time. 3.14 summer/winter switch function seasonal switch on/off of the heating depending on a function of the outside temperature 3.15 set back function function, starting when the operation mode changes from comfort to economy or building protection mode Note 1 to entry: During set back period, the heating is switched off until the calculated or measured room temperature drops below the economy or building protection set point; the operation mode switches back to comfort mode or the calculated switch-on time of the optimization start function is reached. 3.16 optimum start function function, calculating the optimum pre-heat time to reach the comfort temperature level at the beginning of the comfort time period (see Figure 2) and possibly in relation with energy price rate (see Figure 5)
SIST EN 12098-3:2014
EN 12098-3:2013 (E) 8
Key 1 comfort room temperature 2 reduced room temperature A(0) beginning of comfort occupation period A(x) switch-on time with start optimization (variable start) A(y) switch-on time without start optimization (fixed start) B(0) end of comfort occupation period without stop optimization (fixed stop) B(x) switch-off time with stop optimization (variable stop) C = A(0) - B(0): comfort occupation period A(x) - A(0): optimum start period B(x) - B(0): optimum stop period W time period of wasted heat time (energy saving potential with start optimization) Figure 2 — Temperature time curve with optimizer function Note 1 to entry: The optimum start- and the optimum stop functions are illustrated by Figure 3. Heating periods are different from scheduled occupation periods. These differences, due to thermal inertia, depend mainly on heating loads (or temperature differences). A start and/or stop optimizer controls these switching points, using outside and/or room temperatures or their differences in relation to set points. SIST EN 12098-3:2014
EN 12098-3:2013 (E) 9
Key S schedule occupation period O heating operation status R room temperature profile 1 comfort room temperature 2 reduced room temperature 3 comfort occupation period 4 optimum start period 5 main controller function 6 optimum stop period 7 set back period Figure 3 — Example of optimum start- and stop function 3.17 adaptive optimum start function added function to optimum start function, which recalculates the parameters used to determine the switch-on time, based on measured room temperature 3.18 optimum stop function function, switching off or reducing the heat generation at the earliest possible point in time so that the room temperature will drop maximum 0,5 K below the comfort set point when the operation mode changes from comfort mode to economy or building protection mode (see Figure 2) 3.19 adaptive optimum stop function added function to optimum stop function, which recalculates the parameters used to determine the switch-off time, based on measured room temperature 3.20 scheduler function which switches heating modes affecting the heating control system (see Figure 3) according to a program Note 1 to entry: The program includes memorized switch times, reproducing periods or periodic cycles, daily, weekly or yearly. The program may include periods of derogation. SIST EN 12098-3:2014
EN 12098-3:2013 (E) 10 3.21 switch points and time periods 3.21.1 switch on time point in time at which the controller increases the heating in order to reach the comfort room temperature Note 1 to entry: If the optimum start function is applied, the switch on time is automatically determined by the controller; otherwise it is determined by the scheduler. 3.21.2 optimum start period operating pre heat period between the switch on time and the beginning of comfort occupation period 3.21.3 beginning of comfort occupation period user programmed switch point when the comfort room temperature is reached 3.21.4 comfort occupation period operating period during which comfort room temperature is maintained 3.21.5 end of comfort occupation period user programmed switch point when the room temperature is allowed to decrease under the comfort room temperature Note 1 to entry: The room temperature set point is switched to Economy and/or Building Protection set point. 3.21.6 switch off time point in time at which the controller switches off the heating Note 1 to entry: If the optimum stop function is applied, the switch off time is automatically determined by the controller; otherwise it is determined by the scheduler. 3.21.7 optimum stop period operating period between the optimal switch off time and the end of comfort occupation period 3.21.8 derogation function temporary override of the program Note 1 to entry: There are different possibilities for derogation functions. Two examples of temporary override of the program by derogation and recovery of the periodic program are shown in Figure 4: SIST EN 12098-3:2014
EN 12098-3:2013 (E) 11
Key 1 comfort room temperature 2 reduced room temperature A and B are programmed switch times C derogation manual start D programmable duration Upper Diagram: “derogation manual start” initiates a predefined timer which switches the mode to comfort. After the timer is elapsed, the mode defined by the scheduler is applied. Lower Diagram: “derogation manual start” changes the mode until the next programmed switch time. Figure 4 — Examples of derogation 3.22 rise in prices time point in time at which the electricity cost rises (see Figure 5) Note 1 to entry: If the price rate is provided to the controller, optimum start period may be anticipated for the lowest energy cost. This anticipation (high tariff optimum start) is calculated in relation with energy price rate and the period between rise in price time and the beginning of comfort occupation period. 3.23 energy price rate rate of increasing price at rise in price time 212PPPEPR−= (1) where EPR
is the energy price rate; P1
is the low price of the energy; P2
is the high price of the energy. SIST EN 12098-3:2014
EN 12098-3:2013 (E) 12
Key comfort room temperature reduced room temperature 1 room temperature 2 high tariff optimum start period
3 schedule occupation period 4 tariff 5 high 6 low 7 time A(o): beginning of the schedule occupation period
(set by the user) B(o): end of the schedule occupation period (set by the user) A’(o): tariff increase time B(x) : switch-off time with stop optimization (variable stop) A(o) — B(o): comfort occupation period A(x) — A(o) or A’(x) — A’(o): Optimum start period B(x) — B(o): optimum stop period A(x) or A’(x): switch-on time with start optimization (variable start) A(o) — A’(o): High tariff period preceding the schedule occupation period (variable start) Figure 5 — Temperature time curve for optimum switch on taking account of energy price 3.24 manual override operation mode in which the controller is inactive and the actuating equipment can be manipulated manually 4 Functionality 4.1 Functional objective The objective of outside temperature compensated control equipment is to save energy by performing these two main functions: SIST EN 12098-3:2014
EN 12098-3:2013 (E) 13 a) to control the generation and/or distribution of heat so that the room temperature is maintained at the desired level as determined by comfort and energy optimization criteria, estimating the heat demand from measurements of the outside temperature with or without other reference variables; b) to alter the heat generation to follow a scheduled change in order to match occupancy patterns. OTC control equipment also incorporates a frost protection function and a manual emergency operation mode. 4.2 Control equipment functionality
Figure 6 — Block-scheme of control equipment 5 Graphical symbols Graphical symbols are described in CEN/TS 15810. Plain language may be used instead of, or in conjunction with, graphical symbols. 6 Requirements 6.1 Data protection The actual time and date shall be retained for at least 12 h on failure of the power supply. All other data input on commissioning shall be retained. 6.2 Characteristic heating curve The range of characteristic heating curve(s) shall be displayed graphically by the manufacturer on the unit and/or in the technical documents, e.g. as shown in Figure 7. SIST EN 12098-3:2014
EN 12098-3:2013 (E) 14
Key 1 heating power, % relative to maximum value
2 outside temperature NOTE The graphical representation using a reversed temperature axis is also often used. Figure 7 — Example of characteristic heating curves The relations between the adjustable setting parameters and the characteristic heating curves shall be shown. The heating power shall not deviate from the characteristic heating curve by more than ± 5 %. The characteristic heating curves shall be adaptable to the related building. 6.3 Input signal – Sensors Table 1 — Sensor accuracy
Temperature range Sensor accuracy Room temperature +15 to +25 °C ±0,8 K Outside temperature -10 to +18 °C ±1,0 K Outside these temperature ranges, no sensor accuracy is specified in this European Standard. 6.4 Controller operation modes 6.4.1 General Controllers shall facilitate at least automatic operation mode, comfort operation mode and one reduced operation mode (economy / building protection). The current operation mode shall be displayed. The following operation modes shall be available by switching manually: comfort, economy and/or building protection, automatic. 6.4.2 Comfort operation mode Operation mode of occupied rooms. The heating power is a function of the heating curve, based on the outside temperature and the comfort room temperature set point. SIST EN 12098-3:2014
EN 12098-3:2013 (E) 15 6.4.3 Economy operation mode Operation mode for rooms which do not need to be in the comfort operation mode for an extended period of time for energy saving. The heating power is a function of the heating curve, based on the outside temperature and the economy room temperature set point. For the change from comfort to economy operation mode, the controller shall allow a reduction of the heating power of at least 20 %. 6.4.4 Building protection operation mode Mode of operation to protect the building from damages caused by low temperatures and humidity. The controlled variable (i.e. heating power) is a function of the heating curve, based on the outside temperature and the building protection room temperature set point. The building protection set point temperature is below the economy set point temperature. 6.4.5 Automatic operation mode The operation mode (Comfort, Economy and/or Building Protection) is selected automatically according to the scheduler, actual date and time. 6.5 Frost protection In all operating modes (except for manual emergency operation mode operation), a frost protection function shall be effective if the outdoor temperature falls below 2 °C. 6.6 Additional functions 6.6.1 General These functions are optional. If implemented, the requirements of the corresponding function in this subclause have to be fulfilled. 6.6.2 Summer/winter switch function When the attenuated outside temperature exceeds the summer/winter heating limit, a change to summer operation will take place. When the attenuated outside temperature falls below the summer/winter heating limit, a change to winter operation will take place. The summer/winter heating limit shall be adjustable. 6.6.3 Set back function During set back period, the reduced controlled variable (heating power) is valid. The function switches off the heat generation. 6.6.4 Optimum start function The optimum start function calculates the pre-heat time to reach the comfort temperature level at the beginning of the comfort time period within a limit of +/- 30 min. Once the comfort level has been reached, the room temperature shall stay within +/- 0,5 K around the comfort room temperature. 6.6.5 Optimum stop function The optimum stop function calculates the optimum switch-off time so that the room temperature at the end of the comfort period is within the allowable temperature decrease
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