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Samson 5476 manual Functions of the DHW circuit

Models: 5476

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Functions of the DHW circuit

Functions of the DHW circuit

DHW heating from the primary circuit (Anl 4):

The control valve opens depending on the DHW temperature from its closed position.

Stop storage tank charging

The controller stops charging the storage tank when the water temperature in the storage tank measured at sensor SF1 reaches the value T = DHW heating ON + Hysteresis. In systems with two storage tank sensors, the controller stops charging the storage tank when the water temper- ature in the storage tank measured at sensor SF2 reaches the value DHW heating OFF. In sys- tems with storage tank thermostat, the Hysteresis of the thermostat determines when the storage tank charging is finished.

When a high flow temperature is required by the system, the storage tank charging pump is im- mediately switched off. If no heating is taking place or if the flow temperature demand in the system is lower, the End charging process parameter applies for switching off the storage tank charging pump.

The storage tank charging pump is switched off at the latest after two transit time periods of the control valve (2 x TY).

Functions	WE		Configuration
Storage sensor SF1	ON		FB14
Storage sensor SF2	OFF		FB15
Return flow sensor RüF1	ON		FB20

Parameters	WE		Range of values
DHW heating ON	45	°C	20 to 90 °C
DHW heating OFF	50	°C	20 to 90 °C
Hysteresis	5	°C	0 to 30 °C
Charging temperature	55	°C	20 to 90 °C
Stop charging	53	°C	20 to 90 °C
DHW temperature	55	°C	20 to 90 °C

50EB 5476 EN

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Samson 5476 manual Functions of the DHW circuit

Contents

Heating and District Heating Controller TROVIS Mounting and Operating Instructions EB 5476 ENAutomation System Firmware version Edition DecemberDisclaimer of liability Contents ContentsContents 6.9.2Contents 9.1Controller with RS-232-Cport . . . . . . . . . . . . . . . . . . . . .1.1.1 Operating keys 1 Operation1.1Operating elements Operation1.1.2 Operating switches Operation1.2Operating modes Operation1 2 3 4 5 6 7 8 1.3DisplayOperation Fig. 1 · Icons1.4Displaying data Operation1.5Setting the controller time OperationTime schedule 1.6Setting the times-of-useOperation Heating circuitOperation Select datapoint for times-of-use Display1.6.1 Entering public holidays Operation1.6.2 Entering vacation periods Operation1.7Correcting temperature set points OperationStart-up 2 Start-up 2.1Setting the system code number2.2Activating and deactivating functions Proceed as follows Switch to the parameter level Start-upStart-up 2.3Changing parameters2.4Enter key number 2.5Calibrating sensors Start-up2.6Resetting to default values Start-up3 Manual operation Manual operationSystems SystemsSystem Anl Default settingsSystems FB13FB13 = OFF Default settingsSystems Without RFWithout RF SystemsFB13 = OFF FB20 = ONWithout RF SystemsFB13 = OFF FB20 = ONFB13 = OFF Default settingsSystems Without RFWith RüF1 SystemsSolar With SF1FB13 = OFF Default settingsSystems Without RFFB13 = OFF Setting different from default setting: FB15 = ONSystems Without RFSystems 32EB 5476 ENSystems EB 5476 ENSystems 34EB 5476 ENEB 5476 EN SystemsSystem Anl Systems 36EB 5476 ENEB 5476 EN SystemsSystem Anl Systems 38EB 5476 ENEB 5476 EN SystemsSystem Anl Functions of the heating circuit 5 Functions of the heating circuit5.1Weather-compensatedcontrol 5.1.1 Gradient characteristic Functions of the heating circuitFunctions of the heating circuit 5.1.2 4-pointcharacteristicFig. 3 · 4-pointcharacteristic 5.2Fixed set point control 5.3Underfloor heating5.4.1 OT deactivation value in rated operation 5.4Deactivation depending on outdoor temperature5.4.3 Summer mode 5.4.2 OT deactivation value in reduced operationSelection of the operating mode –Automatic mode 5.5Delayed outdoor temperature adaptation5.6Remote operation –Day mode –Night mode5.7Optimization Functions of the heating circuitFunctions of the heating circuit 5.8Flash adaptation5.9Adaptation Functions of the heating circuit 5.10 Pump management5.11 Potentiometer input Functions of the DHW circuit 6.1 DHW heating in the storage tank systemFunctions of the DHW circuit Functions of the DHW circuit Start storage tank chargingFunctions of the DHW circuit Stop storage tank chargingFunctions of the DHW circuit Function6.8Parallel pump operation Anl 2, 3 and 6.6Circulation over the heat exchanger6.7Intermediate heating operation Anl 2, 3 and Functions of the DHW circuit6.9.2 Set-backoperation 6.9Priority circuit Anl 4, 5, 6, 7, 8 and6.9.1 Reverse control Functions of the DHW circuit6.11 Thermal disinfection of the DHW storage tank Functions of the DHW circuit7.1Automatic summer time/winter time changeover 7.4Return flow temperature limitation7 System-widefunctions 7.2Frost protectionSystem-widefunctions –the heating systems have been calibratedSystem-widefunctions 7.5Condensate accumulation control7.6Three-stepcontrol System-widefunctions 7.7On/off control7.9Processing of external demand in RK1 System-widefunctions 7.10.1 Limitation using pulse input7.10 Flow rate/capacity limitation System-widefunctions 7.10.2 Limitation using 0/4 to 20 mA signal7.11 Locking manual levels 7.12 Setting a customized key number System-widefunctionsOperational faults 8 Operational faults8.2Collective error alarm 8.1Sensor failureOperational faults 8.3Temperature monitoring8.4Error status register 9 Communication Communication9.1Controller with RS-232-Cport Communication9.2Controller with serial RS-485interface CommunicationCommunication Station address ST.-NO9.4Meter bus interface Communication9.4.1 Activating the meter bus CommunicationInstallation Appendix Capacity limitationInstallation 10 Installation9.5Memory module Installation Controller housingDimensions in mm Fig. 9 · Installation11 Electrical connection Electrical connectionConnecting the sensors Electrical connectionSystem Anl Electrical connectionSystems Anl 1 to 78EB 5476 ENSystem Anl Electrical connectionSystems Anl 5 to EB 5476 ENElectrical connection 80EB 5476 EN12 Appendix 12.1 Function block list AppendixAppendix FunctionAppendix Setting only possible after entering key numberSetting only possible after entering key number FunctionAppendix Setting only possible after entering key numberSetting only possible after entering key number FunctionSetting only possible after entering key number Setting only possible after entering key numberSetting only possible after entering key number Setting only possible after entering key numberSetting only possible after entering key number Setting only possible after entering key numberSetting only possible after entering key number Setting only possible after entering key numberAppendix 12.2Parameter list Appendix DisplayAppendix DisplayCan only be set after entering the key number AppendixDisplay Appendix DisplaySystem Anl 9, underfloor heating circuit AppendixDisplay Appendix DisplayDHW heating AppendixDisplay Can only be set after entering the key number AppendixDisplay Appendix DisplaySTOP AppendixEB 5476 EN ST.-NR12.3 Sensor resistance tables Appendix12.4 Technical data AppendixFunction block parameter settings 12.5 Customer dataSystem code number Function block settings AppendixAppendix Function block parametersParameter settings AppendixParameters Appendix Public holidays and vacationsAppendix Frequently used abbreviationsAppendix Key number1732 106EB 5476 ENAppendix EB 5476 ENIndex Index Operating levelIndex Three-stepcontrolEB 5476 EN Fig. 11 · Level structure of TROVIS 00:0000:00 112EB 5476 ENPage EB 5476 EN 2007-09