EP0132663A2 - Process for operating a burner-fired low-temperature boiler - Google Patents

Process for operating a burner-fired low-temperature boiler Download PDF

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Publication number
EP0132663A2
EP0132663A2 EP84107913A EP84107913A EP0132663A2 EP 0132663 A2 EP0132663 A2 EP 0132663A2 EP 84107913 A EP84107913 A EP 84107913A EP 84107913 A EP84107913 A EP 84107913A EP 0132663 A2 EP0132663 A2 EP 0132663A2
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EP
European Patent Office
Prior art keywords
temperature
boiler
heat transfer
transfer medium
curve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
EP84107913A
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German (de)
French (fr)
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EP0132663A3 (en
Inventor
Klaus Dipl.-Ing. Bott
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kkw Kulmbacher Klimagerate-Werk GmbH
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Kkw Kulmbacher Klimagerate-Werk GmbH
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Publication of EP0132663A2 publication Critical patent/EP0132663A2/en
Publication of EP0132663A3 publication Critical patent/EP0132663A3/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/174—Supplying heated water with desired temperature or desired range of temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/212—Temperature of the water
    • F24H15/215—Temperature of the water before heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/212—Temperature of the water
    • F24H15/219—Temperature of the water after heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/355—Control of heat-generating means in heaters
    • F24H15/36—Control of heat-generating means in heaters of burners

Definitions

  • the invention relates to a method for operating a low-temperature heating boiler which can be heated with a burner according to the preamble of the patent claim.
  • Low-temperature boilers must be controlled at or above a minimum temperature to prevent condensation in the boiler.
  • This minimum temperature differs depending on the type of heating system used for the heating medium and the boiler design. It is essentially an integral value of the temperatures of the heat transfer medium at the point of the boiler inlet and at the boiler outlet.
  • a method for operating a low-temperature heating boiler which can be heated with a burner is already used according to the preamble of the patent claim.
  • the boiler temperature is controlled by a thermostat.
  • a setting below the minimum temperature is mechanically locked.
  • the temperature gradient in the boiler between the boiler inlet and the boiler outlet can be reduced using an admixing pump.
  • Higher boiler water temperatures are achieved by manually adjusting the thermostats or by overlaying the heating curve of a heating controller by a fixed temperature difference.
  • the known method does not work particularly economically because, at least at times, to reduce the temperature gradient between the boiler inlet and the boiler outlet, the heat transfer medium is heated to higher temperatures than is necessary to prevent condensation in the boiler.
  • the object of the invention is to design the method for operating a low-temperature boiler which can be heated with a burner of the type mentioned in the preamble of the claim, in such a way that it works particularly economically and nevertheless condensation is avoided with certainty.
  • the solution found has the advantage that only simple means are required to carry it out.
  • the solution is characterized by the fact that the temperatures of the heat transfer medium at the boiler outlet are kept at values which are just sufficient to prevent the formation of condensation water when there is a risk of condensation. Excessive temperatures of the heat transfer medium at the boiler outlet that go beyond what is necessary are definitely avoided, regardless of the external conditions and requirements.
  • Another advantage of the solution found is that the direct temperature detection reliably prevents limit cases from falling below the minimum temperature, such as in the case of hot water preparation and the heating of swimming pool water.
  • An embodiment of the invention is on hand Described in a drawing showing a two curve diagram.
  • 1 denotes the curve profile of the temperatures of a heat carrier flowing around in a heating circuit at a point at which the heat carrier flows from the heating return flow into a low-temperature boiler, in which the heat carrier is heated by means of a burner in accordance with a heating controller.
  • the inflow point is referred to below as the boiler inlet.
  • Curves 1 and 2 are plotted as a function of outside temperatures.
  • a horizontal section 1a of curve 1 indicates a minimum temperature which must not be fallen below to avoid condensation on the walls of the boiler.
  • the minimum temperature is 55 ° C.
  • the minimum temperature can change up or down.
  • the heat carrier flowing in at the boiler inlet is mixed with the heat carrier flowing out of the boiler outlet by means of an admixing pump to reduce the heat gradient between the boiler inlet and the boiler outlet if the temperature falls below the minimum.
  • the curve branch 1b of curve 1 adjoining the horizontal section is determined by a heating controller influenced by the heating return.
  • the heating controller can also be determined by the heating flow (not shown).
  • the burner is switched on.
  • the temperature of the heat carrier at the boiler inlet is raised and thus the minimum temperature is kept at its predetermined value.
  • the burner is also switched on when the temperature of the heat transfer medium at the boiler outlet falls below the set temperature. It is assumed here that the minimum temperature at the boiler inlet is undershot when the set temperature at the boiler outlet is undershot.
  • the two curves 1, 2 have the same point of origin, which in the example is 2 0 ° C temperature of the heat transfer medium and 2 0 ° C outside temperature.
  • the boiler is operated in such a way that, as shown, curve 2, which is decisive for the target temperature of the heat transfer medium at the boiler outlet, with respect to the course of the temperature of the heat transfer medium in the heating return indicated in curve 1, runs counterclockwise course rotated around the point of origin.
  • Curve 2 is the same as curve 1, but has a greater gradient than this at every point.
  • the degree of rotation of curve 2 around the point of origin common to curve 1 depends on the type of boiler and the heating system used and must be determined empirically.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)
  • Control Of Combustion (AREA)

Abstract

In the process, heat transfer medium flowing out of the boiler is added to heat transfer medium flowing into the boiler when the temperature at the boiler inlet falls below a minimum value. At the same time, when the temperature at the boiler inlet falls below a minimum value and/or the temperature at the boiler outlet falls below a desired value, the burner is switched on. The burner is switched off when the minimum temperature at the boiler inlet and the desired temperature at the boiler outlet are exceeded. Moreover, either the desired temperature at the boiler outlet, in relation to the march of temperature of the heating return run, is held to a curve (2) which is turned anticlockwise about its point of origin, or the temperature of the boiler inlet is held to a curve (1) which, in relation to the curve (2), is turned clockwise about its point of origin. The curves (1, 2) are identical to one another and have the same point of origin. However, they have different gradients at every point. <IMAGE>

Description

Die Erfindung bezieht sich auf ein Verfahren zum Betreiben eines mit einem Brenner beheizbaren Niedertemperatur-Heizkessels nach dem Oberbegriff des Patentanspruches.The invention relates to a method for operating a low-temperature heating boiler which can be heated with a burner according to the preamble of the patent claim.

Niedertemperatur-Heizkessel müssen zur Verhinderung von Schwitzwasser im Kessel bei oder oberhalb einer Minimaltemperatur geregelt werden. Diese Minimaltemperatur ist je nach Art des angewendeten Heizsystems des Heizmittels und der Kesselkonstruktion verschieden. Sie stimmt sich im wesentlichen als ein integraler Wert von Temperaturen des Wärmeträgers an der Stelle des Kesseleinlaufes und am Kesselausgang.Low-temperature boilers must be controlled at or above a minimum temperature to prevent condensation in the boiler. This minimum temperature differs depending on the type of heating system used for the heating medium and the boiler design. It is essentially an integral value of the temperatures of the heat transfer medium at the point of the boiler inlet and at the boiler outlet.

Es wird bereits ein Verfahren zum Betreiben eines mit einem Brenner beheizbaren Niedertemperatur-Heizkessels nach dem Oberbegriff des Patentanspruches angewandt. Die Regelung der Kesseltemperatur erfolgt hierbei mittels Thermostat. Eine Einstellung unterhalb der Minimaltemperatur ist mechanisch verriegelt. Das Temperaturgefälle im Kessel zwischen Kesseleinlauf und Kesselausgang kann mittels Beimischpumpe reduziert werden. Höhere Kesselwassertemperaturen werden durch manuelles Verstellen der Thermostaten oder durch Überlagerung der Heizkurve eines Heizungsreglers um eine feste Temperaturdifferenz erreicht.A method for operating a low-temperature heating boiler which can be heated with a burner is already used according to the preamble of the patent claim. The boiler temperature is controlled by a thermostat. A setting below the minimum temperature is mechanically locked. The temperature gradient in the boiler between the boiler inlet and the boiler outlet can be reduced using an admixing pump. Higher boiler water temperatures are achieved by manually adjusting the thermostats or by overlaying the heating curve of a heating controller by a fixed temperature difference.

Das bekannte Verfahren arbeitet nicht besonders wirtschaftlich, weil mindestens zeitweise zur Reduzierung des Temperaturgefälles zwischen Kesseleinlauf und Kesselausgang der Wärmeträger nach Maßgabe des Heizungsreglers auf höhere Temperaturen aufgeheizt wird, als an sich zur Verhinderung von Schwitzwasser im Heizkessel notwendig.The known method does not work particularly economically because, at least at times, to reduce the temperature gradient between the boiler inlet and the boiler outlet, the heat transfer medium is heated to higher temperatures than is necessary to prevent condensation in the boiler.

Aufgabe der Erfindung ist es, das Verfahren zum Betreiben eines mit einem Brenner beheizbaren Niedertemperatur-Heizkessels der im Oberbegriff des Patentanspruches genannten Art so auszubilden, daß es besonders wirtschaftlich arbeitet und dennoch Schwitzwasserbildungen mit Sicherheit vermieden sind.The object of the invention is to design the method for operating a low-temperature boiler which can be heated with a burner of the type mentioned in the preamble of the claim, in such a way that it works particularly economically and nevertheless condensation is avoided with certainty.

Die gestellte Aufgabe wird erfindungsgemäß durch die im kennzeichnenden Teil des Anspruches 1 angegebenen Maßnahmen gelöst.The object is achieved according to the invention by the measures specified in the characterizing part of claim 1.

Die gefundene Lösung hat den Vorteil, daß zu seiner Durchführung nur einfache Mittel erforderlich sind. Die Lösung zeichnet sich dadurch aus, daß die Temperaturen des Wärmeträgers am Kesselausgang bei Gefahr von Schwitzwasserbildung auf Werten gehalten werden, die gerade noch ausreichen, die Bildung von Schwitzwasser zu verhindern. Über das notwendige Maß hinausgehende Übertemperaturen des Wärmeträgers am Kesselausgang werden auf jeden Fall vermieden, unabhängig davon, welche äußeren Bedingungen und Anforderungen vorliegen. Ein weiterer Vorteil der gefundenen Lösung besteht darin, daß durch die direkte Temperaturerfassung Grenzfälle der Unterschreitung der Mindesttemperatur, wie zum Beispiel bei der Warmwasserbereitung und der Erwärmung von Schwimmbadwasser, sicher verhindert werden.The solution found has the advantage that only simple means are required to carry it out. The solution is characterized by the fact that the temperatures of the heat transfer medium at the boiler outlet are kept at values which are just sufficient to prevent the formation of condensation water when there is a risk of condensation. Excessive temperatures of the heat transfer medium at the boiler outlet that go beyond what is necessary are definitely avoided, regardless of the external conditions and requirements. Another advantage of the solution found is that the direct temperature detection reliably prevents limit cases from falling below the minimum temperature, such as in the case of hot water preparation and the heating of swimming pool water.

Ein Ausführungsbeispiel der Erfindung wird an Hand einer Zeichnung beschrieben, die ein zwei Kurven aufweisendes Diagramm zeigt.An embodiment of the invention is on hand Described in a drawing showing a two curve diagram.

In der Zeichnung ist mit 1 der Kurvenverlauf der Temperaturen eines in einem Heizungskreislauf umströmenden Wärmeträgers an einer Stelle bezeichnet, an der der Wärmeträger aus dem Heizungsrucklauf in einen Niedertemperatur-Heizkessel einströmt, in dem mittels eines Brenners der Wärmeträger nach Maßgabe eines Heizungsreglers aufgeheizt wird. Die Einströmstelle wird nachfolgend als Kesseleinlauf bezeichnet.In the drawing, 1 denotes the curve profile of the temperatures of a heat carrier flowing around in a heating circuit at a point at which the heat carrier flows from the heating return flow into a low-temperature boiler, in which the heat carrier is heated by means of a burner in accordance with a heating controller. The inflow point is referred to below as the boiler inlet.

Mit 2 ist in der Zeichnung der Kurvenverlauf der Temperaturen des Wärmeträgers an der Stelle des Austritts aus dem Heizkessel und des Eintritts in den Vorlauf des Heizungskreislaufes bezeichnet. Die Stelle des Austritts des Wärmeträgers wird nachfolgend als Kesselausgang bezeichnet.2 in the drawing is the curve of the temperatures of the heat transfer medium at the point of exit from the boiler and the entry into the flow of the heating circuit. The location of the outlet of the heat transfer medium is referred to below as the boiler outlet.

Die Kurven 1 und 2 sind in Abhängigkeit von Außentemperaturen aufgetragen.Curves 1 and 2 are plotted as a function of outside temperatures.

Ein waagrechter Abschnitt 1a der Kurve 1 gibt eine Mindesttemperatur an, die zur Vermeidung von Schwitzwasser an den Wänden des Heizkessels nicht unterschritten werden darf. Im vorliegenden Beispiel beträgt die Mindesttemperatur 55° C. Je nach Art des Heizkessels des Heizmittels und Ausbildung des verwendeten Heizsystems kann sich die Mindesttemperatur jedoch nach oben oder unten ändern.A horizontal section 1a of curve 1 indicates a minimum temperature which must not be fallen below to avoid condensation on the walls of the boiler. In the present example, the minimum temperature is 55 ° C. However, depending on the type of heating medium and the type of heating system used, the minimum temperature can change up or down.

Dem am Kesseleingang einströmenden Wärmeträger wird aus dem Kesselausgang ausströmender Wärmeträger mittels einer Beimischpumpe zur Reduzierung des Wärmegefälles zwischen Kesseleinlauf und Kesselausgang beigemischt, wenn die Mindesttemperatur unterschritten wird.The heat carrier flowing in at the boiler inlet is mixed with the heat carrier flowing out of the boiler outlet by means of an admixing pump to reduce the heat gradient between the boiler inlet and the boiler outlet if the temperature falls below the minimum.

Der sich an den waagrechten Abschnitt anschließende Kurvenast 1b der Kurve 1 wird von einem vom Heizungsrücklauf beeinflußten Heizungsregler bestimmt.The curve branch 1b of curve 1 adjoining the horizontal section is determined by a heating controller influenced by the heating return.

Der Heizungsregler kann jedoch auch vom Heizungsvorlauf bestimmt sein (nicht dargestellt).However, the heating controller can also be determined by the heating flow (not shown).

Bei Unterschreiten der Mindesttemperatur des Wärmeträgers im Kesseleinlauf (Abschnitt 1a der Kurve 1), wird der Brenner eingeschaltet. Durch die Mischung mit aus dem Kesselausgang kommenden Wärmeträger wird die Temperatur des wärmeträgers am Kesseleingang angehoben und so die Mindesttemperatur auf ihrem vorgegebenen Wert gehalten.If the temperature of the heat transfer medium in the boiler inlet falls below the minimum (section 1a of curve 1), the burner is switched on. By mixing with the heat carrier coming from the boiler outlet, the temperature of the heat carrier at the boiler inlet is raised and thus the minimum temperature is kept at its predetermined value.

Der Brenner wird auch eingeschaltet, wenn eine Solltemperatur des Wärmeträgers am Kesselausgang unterschritten wird. Hierbei wird davon ausgegangen, daß eine Unterschreitung der Mindesttemperatur am Kesseleinlauf vorliegt, wenn die Solltemperatur am Kesselausgang unterschritten ist.The burner is also switched on when the temperature of the heat transfer medium at the boiler outlet falls below the set temperature. It is assumed here that the minimum temperature at the boiler inlet is undershot when the set temperature at the boiler outlet is undershot.

Umgekehrt wird beim Überschreiten der Mindesttemperatur des Wärmeträgers am Kesseleingang und beim Überschreiten der Solltemperatur des Wärmeträgers am Kesselausgang der Brenner ausgeschaltet.Conversely, when the minimum temperature of the heat transfer medium at the boiler inlet and the set temperature of the heat transfer medium at the boiler outlet are exceeded, the burner is switched off.

Während des Betriebs der Beimischpumpe verläuft die Temperaturkurve 2 des aus dem Heizkessel austretenden Wärmeträgers im Abschnitt 2a etwa parallel zum Abschnitt 1a der Kurve 1. Nach ihren parallelen Abschnitten 1a,2a ändern die Kurven 1,2 infolge weiterer Verfahrensmaßnahmen ihren Verlauf.During operation of the admixing pump, the temperature curve 2 of the heat carrier emerging from the boiler in section 2a runs approximately parallel to section 1a of curve 1. After their parallel sections 1a, 2a, curves 1,2 change their course as a result of further procedural measures.

Für die genannten Verfahrensmaßnahmen gilt entweder die Kurve 1 als Bezugskurve, wenn der Heizungsregler im Heizungsrücklauf angeordnet ist oder die Kurve 2 als Bezugskurve, wenn der Heizungsregler vom Heizungsvorlauf beeinflußt ist.For the procedural measures mentioned either applies curve 1 as a reference curve if the heating controller is arranged in the heating return or curve 2 as a reference curve if the heating controller is influenced by the heating flow.

Unabhängig von ihren parallelen Abschnitten 1a, 2a, haben die beiden Kurven 1,2 den gleichen Ursprungspunkt, der im Beispiel bei 20° C Temperatur des Wärmeträgers und 20° C Außentemperatur liegt.Regardless of their parallel sections 1a, 2a, the two curves 1, 2 have the same point of origin, which in the example is 2 0 ° C temperature of the heat transfer medium and 2 0 ° C outside temperature.

Im Fall der Anordnung des Heizungsreglers im Heizungsrücklauf wird der Heizkessel so betrieben, daß, wie dargestellt, die für die Solltemperatur des Wärmeträgers am Kesselausgang maßgebende Kurve 2 in Bezug zu dem in der Kurve 1 angezeigten Verlauf der Temperatur des Wärmeträgers im Heizungsrücklauf einen entgegen dem Uhrzeigersinn um den Ursprungspunkt gedrehten Verlauf nimmt. Dabei ist die Kurve 2 gleich der Kurve 1, hat jedoch in jedem Punkt eine größere Steigung als diese.In the case of the arrangement of the heating controller in the heating return, the boiler is operated in such a way that, as shown, curve 2, which is decisive for the target temperature of the heat transfer medium at the boiler outlet, with respect to the course of the temperature of the heat transfer medium in the heating return indicated in curve 1, runs counterclockwise course rotated around the point of origin. Curve 2 is the same as curve 1, but has a greater gradient than this at every point.

Der Grad der Drehung der Kurve 2 um den mit der Kurve 1 gemeinsamen Ursprungspunkt ist von der Art des Heizkessels und dem angewendeten Heizsystem abhängig und muß empirisch ermittelt werden.The degree of rotation of curve 2 around the point of origin common to curve 1 depends on the type of boiler and the heating system used and must be determined empirically.

Im Fall der Anordnung des Heizungsreglers im Heizungsvorlauf wird der Heizkesselbetrieb so gesteuert, daß die für die Temperatur des Wärmeträgers am Kesseleinlauf maßgebende Kurve 1 zwar gleich der Kurve 2, jedoch gegenüber dieser um den gemeinsamen Ursprungspunkt im Uhrzeigersinn gedreht ist. Auch in diesem Falle hängt der Grad derIn the case of the arrangement of the heating controller in the heating flow, the boiler operation is controlled in such a way that curve 1, which is decisive for the temperature of the heat transfer medium at the boiler inlet, is the same as curve 2, but is rotated clockwise with respect to the common point of origin. In this case too, the degree of

Drehung um den Ursprungspunkt vom Heizkessel und vom Heizungssystein ab und muß empirisch ermittelt werden.Rotation around the point of origin from the boiler and the heating system and must be determined empirically.

Claims (1)

Verfahren zum Betreiben eines mit einem Brenner beheizten Niedertemperatur-Heizkessels, wobei einem in einem Heizungskreislauf umströmenden Wärmeträger am Übergang zwischen Heizungsrücklauf und Kesseleinlauf aus dem Kesselausgang austretender-und in den Heizungsvorlauf eintretender Wärmeträger mittels einer Beimischpumpe, zur Reduzierung eines Temperaturgefälles des Wärmeträgers zwischen dem Kesseleinlauf und dem Kesselauslauf beigemischt wird, wenn eine Mindesttemperat»r des Wärmeträgers am Kesseleinlauf unterschritten ist, dadurch gekennzeichnet, daß bei Unterschreiten der Mindesttemperatur des Wärmeträgers am Kesseleinlauf und/oder Unterschreiten einer Solltemperatur des Wärmeträgers am Kesselausgang der Brenner eingeschaltet und bei Überschreiten der Mindesttemperatur des Wärmeträgers am Kesseleinlauf und bei Überschreiten der Solltemperatur des Wärmeträgers am Kesselausgang der Brenner ausgeschaltet wird; und daß entweder die Solltemperatur des Wärmeträgers am Kesselausgang in Bezug zum Verlauf der Temperatur des Heizungsrücklaufes auf einer um ihren Ursprungspunkt entgegen dem Uhrzeigersinne gedrehten Kurve (2) gehalten oder die Temperatur des Kesseleinlaufes auf einer gegenüber dem Verlauf der Temperatur des Heizungsvorlaufes auf einer Kurve gehalten wird, die im Uhrzeigersinn um ihren Ursprungspunkt gedreht ist wobei die beiden Kurven (1,2) untereinander etwa gleich sind und den gleichen Ursprungspunkt aufweisen.Method for operating a low-temperature boiler heated with a burner, whereby a heat carrier flowing in a heating circuit at the transition between the heating return and the boiler inlet exits from the boiler outlet and enters the heating flow by means of an admixing pump, to reduce a temperature gradient of the heat carrier between the boiler inlet and is added to the boiler outlet when a minimum temperature of the heat transfer medium at the boiler inlet is undershot, characterized in that when the temperature falls below the minimum temperature of the heat transfer medium at the boiler inlet and / or falls below a set temperature of the heat transfer medium at the boiler outlet, the burner is switched on and when the minimum temperature of the heat transfer medium is exceeded on Boiler inlet and if the set temperature of the heat transfer medium at the boiler outlet is exceeded, the burner is switched off; and that either the setpoint temperature of the heat transfer medium at the boiler outlet is kept on a curve (2) turned counterclockwise with respect to the course of the temperature of the heating return, or the temperature of the boiler inlet is kept on a curve relative to the course of the temperature of the heating flow which is rotated clockwise around its point of origin, the two curves (1, 2) being approximately identical to one another and having the same point of origin.
EP84107913A 1983-07-22 1984-07-06 Process for operating a burner-fired low-temperature boiler Withdrawn EP0132663A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3326378 1983-07-22
DE19833326378 DE3326378A1 (en) 1983-07-22 1983-07-22 METHOD FOR OPERATING A LOW-TEMPERATURE HEATING BOILER HEATABLE WITH A BURNER

Publications (2)

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EP0132663A2 true EP0132663A2 (en) 1985-02-13
EP0132663A3 EP0132663A3 (en) 1985-03-13

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EP84107913A Withdrawn EP0132663A3 (en) 1983-07-22 1984-07-06 Process for operating a burner-fired low-temperature boiler

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
EP3510329A4 (en) * 2016-09-08 2020-06-10 Lochinvar, LLC Boiler integrated control with non-linear outdoor reset methodology

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3832320A1 (en) * 1988-09-23 1990-03-29 Omnical Gmbh Method for regulating a central-heating boiler
AT399576B (en) * 1990-05-16 1995-06-26 Vaillant Gmbh HEATING SYSTEM

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Publication number Priority date Publication date Assignee Title
FR2350558A1 (en) * 1976-05-07 1977-12-02 Cem Comp Electro Mec REGULATION DEVICE FOR HOT WATER HEATING SYSTEM
DE2650070A1 (en) * 1976-10-30 1978-05-03 Gerhard Hahn Central heating circuit with parallel return flows - has valve between pump and boiler giving return flow by=passing boiler
DE2832810B1 (en) * 1978-04-10 1979-04-05 Elesta Ag Elektronik Protection circuit against low temperature corrosion of a boiler that can be heated by means of a burner
FR2470933A1 (en) * 1979-12-04 1981-06-12 Salzmann Friedhelm Regulation circuit for domestic central heating system - uses temp. sensor to control boiler ignition to maintain min. necessary circulation temp.
DE3030565A1 (en) * 1980-08-13 1982-03-11 Körting Hannover AG, 3000 Hannover Boiler for domestic heating systems - has burner connected to and regulated by room temp. control using three=way valve

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2350558A1 (en) * 1976-05-07 1977-12-02 Cem Comp Electro Mec REGULATION DEVICE FOR HOT WATER HEATING SYSTEM
DE2650070A1 (en) * 1976-10-30 1978-05-03 Gerhard Hahn Central heating circuit with parallel return flows - has valve between pump and boiler giving return flow by=passing boiler
DE2832810B1 (en) * 1978-04-10 1979-04-05 Elesta Ag Elektronik Protection circuit against low temperature corrosion of a boiler that can be heated by means of a burner
FR2470933A1 (en) * 1979-12-04 1981-06-12 Salzmann Friedhelm Regulation circuit for domestic central heating system - uses temp. sensor to control boiler ignition to maintain min. necessary circulation temp.
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Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3510329A4 (en) * 2016-09-08 2020-06-10 Lochinvar, LLC Boiler integrated control with non-linear outdoor reset methodology
US10876741B2 (en) 2016-09-08 2020-12-29 Lochinvar, Llc Boiler integrated control with non-linear outdoor reset methodology

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EP0132663A3 (en) 1985-03-13

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