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Samson 5476 manual Functions of the DHW circuit

Models: 5476

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Functions of the DHW circuit

6.3DHW heating with solar system (Anl 2, 3, 4, 5 und 9)

The systems Anl 2, 3, 4, 5 and 9 include a solar system for DHW heating. In these systems, the difference between the temperatures measured at storage sensor SF2 and the sensor at the so- lar collector CF is determined. The Solar pump ON parameter determines the minimum temper- ature difference between sensors SF2 and CF required to activate the solar pump. If the temper- ature difference falls below the value of Solar pump OFF, the solar pump is switched off. Ba- sically, the solar pump is also switched off when the water temperature measured at sensor SF2 has reached the Solar charging OFF parameter.

The times-of-use of the DHW circuit do not have any influence on the operation of the solar sys- tem. After the key number 1990 has been set, the operating hours of the solar pump are dis- played in extended operating level.

Function	WE		Configuration
Storage tank sensor SF2			FB15 = ON, select “CF“

Parameters	WE		Range of values
Solar circuit pump ON	10	°C	0 to 30	°C
Solar circuit pump OFF	2	°C	0 to 30	°C
Solar charging OFF	70	°C	20 to 90	°C

6.4DHW heating in instantaneous heating system (Anl 6)

The controller regulates the DHW outlet temperature of the heat exchanger according to the ad- justed DHW temperature.

The circulation pump works according to the time schedule. We strongly recommend to operate the circulation pump during times-of-use of the DHW circuit (–> section 6.5).

To keep temperature peaks caused by load changes as small as possible, it is absolutely neces- sary that a temperature sensor with short response times (e.g. Type 5207-xx6x Pt 1000 Sen- sor) to measure the DHW outlet temperature. In addition, an actuator with a transit time of around 20 seconds should be used.

Note!

The control parameter setting has great influence on the control accuracy in the case of DHW heating in instantaneous heating systems.

Parameter	WE	Range of values
DHW temperature	55 °C	20 to 90 °C

EB 5476 EN 53

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Samson 5476 manual Functions of the DHW circuit

Contents

Automation System Mounting and Operating Instructions EB 5476 ENHeating and District Heating Controller TROVIS Firmware version Edition DecemberDisclaimer of liability Contents Contents6.9.2 Contents9.1Controller with RS-232-Cport . . . . . . . . . . . . . . . . . . . . . Contents1.1Operating elements 1 Operation1.1.1 Operating keys OperationOperation 1.1.2 Operating switchesOperation 1.2Operating modesOperation 1.3Display1 2 3 4 5 6 7 8 Fig. 1 · IconsOperation 1.4Displaying dataOperation 1.5Setting the controller timeOperation 1.6Setting the times-of-useTime schedule Heating circuitSelect datapoint for times-of-use Display OperationOperation 1.6.1 Entering public holidaysOperation 1.6.2 Entering vacation periodsOperation 1.7Correcting temperature set pointsStart-up 2 Start-up 2.1Setting the system code number2.2Activating and deactivating functions Start-up Proceed as follows Switch to the parameter levelStart-up 2.3Changing parameters2.4Enter key number Start-up 2.5Calibrating sensorsStart-up 2.6Resetting to default valuesManual operation 3 Manual operationSystems SystemsSystems Default settingsSystem Anl FB13Systems Default settingsFB13 = OFF Without RFFB13 = OFF SystemsWithout RF FB20 = ONFB13 = OFF SystemsWithout RF FB20 = ONSystems Default settingsFB13 = OFF Without RFSolar SystemsWith RüF1 With SF1Systems Default settingsFB13 = OFF Without RFSystems Setting different from default setting: FB15 = ONFB13 = OFF Without RF32EB 5476 EN SystemsEB 5476 EN Systems34EB 5476 EN SystemsEB 5476 EN SystemsSystem Anl 36EB 5476 EN SystemsEB 5476 EN SystemsSystem Anl 38EB 5476 EN SystemsEB 5476 EN SystemsSystem Anl Functions of the heating circuit 5 Functions of the heating circuit5.1Weather-compensatedcontrol Functions of the heating circuit 5.1.1 Gradient characteristicFunctions of the heating circuit 5.1.2 4-pointcharacteristicFig. 3 · 4-pointcharacteristic 5.3Underfloor heating 5.2Fixed set point control5.4.3 Summer mode 5.4Deactivation depending on outdoor temperature5.4.1 OT deactivation value in rated operation 5.4.2 OT deactivation value in reduced operation5.6Remote operation 5.5Delayed outdoor temperature adaptationSelection of the operating mode –Automatic mode –Day mode –Night modeFunctions of the heating circuit 5.7OptimizationFunctions of the heating circuit 5.8Flash adaptation5.9Adaptation Functions of the heating circuit 5.10 Pump management5.11 Potentiometer input 6.1 DHW heating in the storage tank system Functions of the DHW circuitFunctions of the DHW circuit Start storage tank charging Functions of the DHW circuitStop storage tank charging Functions of the DHW circuitFunction Functions of the DHW circuit6.7Intermediate heating operation Anl 2, 3 and 6.6Circulation over the heat exchanger6.8Parallel pump operation Anl 2, 3 and Functions of the DHW circuit6.9.1 Reverse control 6.9Priority circuit Anl 4, 5, 6, 7, 8 and6.9.2 Set-backoperation Functions of the DHW circuitFunctions of the DHW circuit 6.11 Thermal disinfection of the DHW storage tank7 System-widefunctions 7.4Return flow temperature limitation7.1Automatic summer time/winter time changeover 7.2Frost protection–the heating systems have been calibrated System-widefunctionsSystem-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 System-widefunctions 7.12 Setting a customized key number8.2Collective error alarm 8 Operational faultsOperational faults 8.1Sensor failureOperational faults 8.3Temperature monitoring8.4Error status register Communication 9 CommunicationCommunication 9.1Controller with RS-232-CportCommunication 9.2Controller with serial RS-485interfaceStation address ST.-NO CommunicationCommunication 9.4Meter bus interfaceCommunication 9.4.1 Activating the meter busInstallation Capacity limitation AppendixInstallation 10 Installation9.5Memory module Dimensions in mm Controller housingInstallation Fig. 9 · InstallationElectrical connection 11 Electrical connectionElectrical connection Connecting the sensorsSystems Anl 1 to Electrical connectionSystem Anl 78EB 5476 ENSystems Anl 5 to Electrical connectionSystem Anl EB 5476 EN80EB 5476 EN Electrical connectionAppendix 12 Appendix 12.1 Function block listFunction AppendixSetting only possible after entering key number Setting only possible after entering key numberAppendix FunctionSetting only possible after entering key number Setting only possible after entering key numberAppendix 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 Display AppendixDisplay AppendixCan only be set after entering the key number AppendixDisplay Display AppendixSystem Anl 9, underfloor heating circuit AppendixDisplay Display AppendixDHW heating AppendixDisplay Can only be set after entering the key number AppendixDisplay Display AppendixEB 5476 EN AppendixSTOP ST.-NRAppendix 12.3 Sensor resistance tablesAppendix 12.4 Technical dataSystem code number Function block settings 12.5 Customer dataFunction block parameter settings AppendixFunction block parameters AppendixAppendix Parameter settingsParameters Public holidays and vacations AppendixFrequently used abbreviations Appendix1732 Key numberAppendix 106EB 5476 ENEB 5476 EN AppendixIndex Operating level IndexThree-stepcontrol IndexEB 5476 EN 00:00 00:00Fig. 11 · Level structure of TROVIS 112EB 5476 ENPage 2007-09 EB 5476 EN