SIST EN 12098-1:2013
(Main)Controls for heating systems - Part 1: Control equipment for hot water heating systems
Controls for heating systems - Part 1: Control equipment for hot water heating systems
This European Standard applies to electronic control equipment for heating systems with water as the heating medium and a flow water temperature up to 120 °C. 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 standard covers also controllers which contain an integrated optimum start or an optimum start-stop control function. Safety requirements on heating systems remain unaffected by this standard. The dynamic behaviour of the valves and actuators are 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 Raumheizungen - Teil 1: Regelung für Warmwasserheizungen
Diese Norm gilt für elektronische Mess-, Regel- und Steuereinrichtungen für Heizungsanlagen mit Wasser als Wärmeträger und einer Vorlauftemperatur bis 120 °C.
Diese Mess-, Regel- und Steuereinrichtungen dienen zur Steuerung und Regelung der Wärmeverteilung und/oder erzeugung in Abhängigkeit von der Außentemperatur, der Zeit und anderen Führungsgrößen.
Diese Norm behandelt ebenfalls Regler mit integrierter Einschalt-Optimier Funktion oder Ein-/Ausschalt-Optimier Funktion.
Sicherheitstechnische Anforderungen an Heizungsanlagen bleiben von dieser Norm unberührt. Das dyna-mische Verhalten von Ventilen und Stellgliedern wird in dieser Norm nicht behandelt.
Systeme mit mehreren Verteilsystemen oder Erzeugungsanlagen erfordern eine koordinierte Lösung zur Ver-hin¬derung unerwünschter Wechselwirkungen und sind nicht Gegenstand dieser Norm.
Régulation pour les systèmes de chauffage - Partie 1: Equipement de régulation pour les systèmes de chauffage à eau chaude
La présente norme Européenne s'applique aux équipements électroniques de régulation pour les systèmes de chauffage à l'eau comme fluide caloporteur, avec une température de l'eau allant jusqu'à 120 °C.
Ces équipements de régulation servent à la commande et au réglage de la distribution et/ou de la génération de chaleur, en fonction de la température extérieure et du temps ainsi que d'autres variables de référence.
La présente norme couvre également les régulateurs contenant une fonction de commande intégrée de démarrage optimisé ou de démarrage-arrêt optimisé.
Les impératifs de sécurité concernant les systèmes de chauffage ne sont pas affectés par la présente norme. Le comportement dynamique des vannes et 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. Celui-ci ne fait pas partie de la présente norme.
Regulacijske naprave za sisteme ogrevanja - 1. del: Naprave za regulacijo delovanja toplovodnih ogrevalnih sistemov
Ta evropski standard se uporablja za elektronske naprave za regulacijo delovanja grelnih sistemov, pri katerih je grelni medij voda, ki dosega temperaturo do 120 °C. Ta naprava za regulacijo delovanja nadzira in ureja razporeditev in/ali proizvodnjo toplote glede na zunanjo temperaturo in čas ter druge referenčne spremenljivke. Ta standard zajema tudi regulacijske naprave z vgrajeno nadzorno funkcijo za optimalni začetek ali optimalni začetek/konec. Ta standard ne vpliva na varnostne zahteve za grelne sisteme. Dinamično obnašanje ventilov in sprožilnikov ni zajeto v tem standardu. Večdistribucijski in/ali večproizvodni sistem potrebuje usklajeno rešitev, da se preprečijo neželeni medsebojni vplivi, in ni del tega standarda.
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Regulacijske naprave za sisteme ogrevanja - 1. del: Naprave za regulacijo delovanja toplovodnih ogrevalnih sistemovMeß-, Steuer- und Regeleinrichtungen für Raumheizungen - Teil 1: Regelung für WarmwasserheizungenRégulation pour les systèmes de chauffage - Partie 1: Equipement de régulation pour les systèmes de chauffage à eau chaudeControls for heating systems - Part 1: Control equipment for hot water heating systems97.120Avtomatske krmilne naprave za domAutomatic controls for household use91.140.10Sistemi centralnega ogrevanjaCentral heating systemsICS:Ta slovenski standard je istoveten z:EN 12098-1:2013SIST EN 12098-1:2013en,fr,de01-november-2013SIST EN 12098-1:2013SLOVENSKI
STANDARDSIST EN 12098-2:2002SIST EN 12098-1:20021DGRPHãþD
SIST EN 12098-1:2013
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12098-1
August 2013 ICS 91.140.10; 97.120 Supersedes EN 12098-1:1996, EN 12098-2:2001English Version
Controls for heating systems - Part 1: Control equipment for hot water heating systems
Régulation pour les systèmes de chauffage - Partie 1: Equipement de régulation pour les systèmes de chauffage à eau chaude
Mess-, Steuer- und Regeleinrichtungen für Heizungen - Teil 1: Regeleinrichtungen für Warmwasserheizungen This European Standard was approved by CEN on 8 June 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 12098-1:2013: ESIST EN 12098-1:2013
EN 12098-1:2013 (E) 2 Contents Page Foreword .4 Introduction .5 1 Scope .6 2 Normative references .6 3 Terms and definitions .6 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 . 15 6.4.1 General . 15 6.4.2 Comfort operation mode . 15 6.4.3 Economy operation mode . 15 6.4.4 Building protection operation mode . 16 6.4.5 Automatic operation mode . 16 6.5 Frost protection . 16 6.6 Additional functions . 16 6.6.1 General . 16 6.6.2 Summer/Winter switch function . 16 6.6.3 Set back function . 16 6.6.4 Optimum start function . 16 6.6.5 Optimum stop function . 16 6.7 Switching times . 17 6.8 Manual Emergency Operation Mode (MEOM) . 17 6.9 Parameter settings. 17 6.10 Factory settings / Default values . 17 6.10.1 Characteristic heating curve . 17 6.10.2 Switching times / Operating condition . 18 6.11 Switching relays. 18 6.12 Electrical requirements . 18 6.12.1 Electrical connections . 18 6.12.2 Supply voltage . 18 6.12.3 Electrical safety. 18 6.12.4 Electro magnetic compatibility . 18 6.13 Degree of protection . 18 6.14 Environmentally induced stress due to temperature . 18 6.15 Materials . 19 6.16 Use of graphical symbols . 19 7 Test methods . 19 7.1 Data protection . 19 7.2 Controller operation modes . 19 7.3 Controller characteristic heating curve . 19 7.4 Frost protection . 24 7.5 Switching times . 24 SIST EN 12098-1:2013
EN 12098-1:2013 (E) 3 7.6 Manual Emergency Operation Mode . 24 7.7 Optimum start-stop function . 24 7.7.1 General . 24 7.7.2 Test conditions . 26 7.7.3 Test run. 26 7.7.4 Test results start optimisation . 27 7.7.5 Test results stop optimisation . 29 7.7.6 Summer/Winter-switch . 29 7.8 Set back . 29 7.9 Parameter settings . 29 7.10 Factory settings . 29 7.11 Switching relays . 29 7.12 Electrical test . 29 7.13 Degrees of protection . 30 7.14 Environmental individual stress due to temperature . 30 8 Marking . 30 9 Documentation . 30 9.1 Technical documents . 30 9.2 Technical specifications . 30 9.2.1 Controller. 30 9.2.2 Output signals . 31 9.2.3 Input signals (Sensors) . 31 9.3 Instruction installation . 31 9.4 User guideline . 31 Bibliography . 32
SIST EN 12098-1:2013
EN 12098-1:2013 (E) 4 Foreword This document (EN 12098-1:2013) 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 February 2014, and conflicting national standards shall be withdrawn at the latest by February 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 12098-1:1996 and EN 12098-2:2001. EN 12098, Controls for heating systems, currently consists of the following parts: Part 1: Control equipment for hot water heating systems (the present document); Part 3: Outside temperature compensated control equipment for electrical heating systems; Part 4: Optimum start-stop control equipment for electrical systems1); Part 5: Start-stop schedulers for heating systems. 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). This standard covers also controllers which contain an integrated optimum start or an optimum start-stop control function. 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, 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.
1) EN 12098-4:2005 is bound to be superseded in the future by an upcoming new edition of EN 12098-3. SIST EN 12098-1:2013
EN 12098-1:2013 (E) 5 Introduction Equipment which controls the heating supply in buildings according to outside temperature and time is necessary to reduce the energy consumption of heating plants. This equipment can bring about improved comfort and energy savings. For this purpose, an outside temperature compensated controller (OTC) is necessary. This standard describes the main equipment characteristics and functions for reaching energy saving and comfort objectives.
SIST EN 12098-1:2013
EN 12098-1:2013 (E) 6 1 Scope
This European Standard applies to electronic control equipment for heating systems with water as the heating medium and a flow water temperature up to 120 °C. 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 standard covers also controllers which contain an integrated optimum start or an optimum start-stop control function. Safety requirements on heating systems remain unaffected by this standard. The dynamic behaviour of the valves and actuators are 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 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. 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 instrument that controls and regulates the distribution and/or the generation of heat in relation to the outside temperature and time and other reference variables Note 1 to entry: The Outside Temperature Compensated function calculates the flow (supply) temperature in relation to the outside temperature, based on the heating curve. 3.2 control equipment equipment which consists of the OTC, sensor input signals and output signals, but does not include the sensors and actuating equipment Note 1 to entry: See Figure 1. SIST EN 12098-1:2013
EN 12098-1:2013 (E) 7
Key 1 OTC 2 output signals 3 input signals: reference variables 4 input signal: controlled variable 5 actuating equipment 6 heat generation & distribution Figure 1 — Control equipment for heating systems 3.3 actuating equipment equipment by which the controller affects the controlled variable 3.4 controlled variable (input signal) supply water temperature and/or boiler water temperature as a result of the heating curve in accordance to the reference variables 3.5 output signals signals generated by the OTC controller for operating 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 setpoint 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 ambient air temperature 3.8 room temperature resulting room temperature in the building that arises in comfort, economy or building protection operation mode of the OTC controller and that can be different for individual rooms SIST EN 12098-1:2013
EN 12098-1:2013 (E) 8 3.9 characteristic heating curve relation between the setpoint value of the controlled variable (e.g. flow water temperature) and the reference variables (outside temperature) defined by two or more parameters and depending on operation mode and additional variables Note 1 to entry: The flow water temperature is a function of the outside temperature and the present room temperature setpoint. The supply water temperature as function of the outside temperature is graphically represented by the heating curve. 3.10 comfort operation mode operating period between the switch-on time and the switch-off time for normally occupied rooms 3.11 economy operation mode (reduced mode) operating period 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 (reduced mode) operating period between the switch-off time and the switch-on time, maintaining a room temperature required for building protection 3.13 automatic operation mode of operation of equipment when significant control functions are not overridden by the user Note 1 to entry: The operation mode is selected automatically according to the scheduler, actual date and time. 3.14 summer/winter switch function summer/winter switch is used to seasonal switch on/off the heating depending on a function of the outside temperature 3.15 set back function function to switch off heat generation when the operation mode changes from comfort to economy or building protection 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 optimisation start function is reached 3.16 optimum start function function that calculates the optimum pre-heat time to reach the comfort temperature level at the beginning of the comfort time period Note 1 to entry: See Figure 2. SIST EN 12098-1:2013
EN 12098-1:2013 (E) 9
Key 1 comfort room temperature 2 reduced room temperature A(0)
beginning of comfort occupation period A(x)
switch-on time with start optimisation (variable start) A(y)
switch-on time without start optimisation (fixed start) B(0)
end of comfort occupation period without stop optimisation (fixed stop) B(x)
switch-off time with stop optimisation (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 (energy saving potential with start optimisation) Figure 2 — Temperature time curve with optimiser function 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 temperatures differences). A start and/or stop optimiser controls these switching points, using outside and/or room temperatures or their differences in relation to setpoints. SIST EN 12098-1:2013
EN 12098-1:2013 (E) 10
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 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 switches off or reduces the heat generation at the earliest possible point in time so that the room temperature will drop max. 0,5 K below the comfort setpoint when the operation mode changes from comfort mode to economy or building protection mode Note 1 to entry: 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 which includes memorised switch times, reproducing periods or periodic cycles, daily, weekly or yearly, and may also include periods of derogation 3.21 switch points and time periods
SIST EN 12098-1:2013
EN 12098-1:2013 (E) 11 3.21.1 switch on time point in time at which the controller increase the setpoint for boiler/flow temperature 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 optimal 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 bound to be reached 3.21.4 comfort occupation period operating period during which comfort room temperature is bound to be 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 and for which the room temperature setpoint is switched to Economy and/or Building Protection setpoint 3.21.6 switch off time point in time at which the controller decreases the setpoint for boiler/flow water temperature 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 or set of functions for user interaction to temporary override the operation mode 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: − 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. SIST EN 12098-1:2013
EN 12098-1:2013 (E) 12
Key 1 comfort room temperature A and B
programmed switch times 2 reduced room temperature C derogation manual start D programmable duration Figure 4 — Examples of derogation 3.22 valve protection function (valve exercise function) anti-jamming function for valves in which the valves should be moved periodically during longer off periods 3.23 pump protection function (pump exercise function) anti-jamming function for pump in which the pumps should be switched on during longer off periods
3.24 frost protection function function in all operation modes (except manual emergency operation) to prevent the heating system from freezing by providing specific output signals 3.25 Manual Emergency Operation Mode
MEOM mode in which the controller is inactive and the actuating equipment is manipulated manually 4 Functionality 4.1 Functional objective The objective of outside temperature compensated control equipment is to save energy by reducing waste potential and supply losses performing these main functions: SIST EN 12098-1:2013
EN 12098-1:2013 (E) 13 a) to control supply temperature so that the room temperature can be maintained at the desired level, as determined by comfort and energy optimisation criteria, estimating the heat demand from measurements of the outside temperature with or without other reference variables; b) to alter the heat supply 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 See Figure 5:
Figure 5 — Block-scheme of control equipment
5 Graphical symbols Graphical symbols are described in CEN/TS 15810. Plain language can be used instead of, or in conjunction with, graphical symbols. 6 Requirements 6.1 Data protection
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 6. SIST EN 12098-1:2013
EN 12098-1:2013 (E) 14
Key 1 boiler / supply-water temperature (°C) 2 outside temperature (°C) NOTE The graphical representation using a reversed temperature axis is also often used. Figure 6 — Example of characteristic heating curves The relations between the adjustable setting parameters and the characteristic heating curves shall be shown. The average flow water temperature shall not deviate from the set temperature points on the characteristic heating curve by more than ± 3 K. Characteristic heating curves are defined for different temperature ranges: heating system for high temperature as oil/gas burners or district heating and flow/return temperatures of 90 °C/70 °C; heating system for medium temperature as oil/gas burners with flow/return temperatures of 70 °C/50 °C; heating system for low temperature heat generation systems as renewable energies (solar/heat pump) with flow/return temperatures of 55 °C/45 °C; heating system for floor heating applications with flow/return temperatures of 35 °C/28 °C. At least one
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