Samson 5476 manual DHW heating with solar system Anl 2, 3, 4, 5 und

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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

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Contents Mounting and Operating Instructions EB 5476 EN Disclaimer of liability Contents Contents Contents Operating keys OperationOperating elements Operating switches Operating modes Closed DisplayDisplaying data Setting the controller time Heating circuit Setting the times-of-useStart Entering public holidays Entering vacation periods Correcting temperature set points Activating and deactivating functions Start-up Setting the system code numberDisplay shows Current system code number Blink Enter key number Changing parametersCalibrating sensors Resetting to default values Manual operation DHW SystemsSystem Anl Default settings FB13 = OFF Without RF FB20 = on 26 EB 5476 EN FB15 = ON, select CF FB15 = ON, select Solar FB21 = OFF Solar collector 32 EB 5476 EN FB15 = ON, select CF 34 EB 5476 EN Default settings FB13 = OFF Without RF FB20 = on FB15 = on Systems 38 EB 5476 EN FB15 = on Weather-compensated control Functions of the heating circuitGradient characteristic · 4-point characteristic 2 4-point characteristicUnderfloor heating Fixed set point controlOT deactivation value in reduced operation Summer modeRemote operation Delayed outdoor temperature adaptationOptimization Adaptation Flash adaptationPotentiometer input Pump management· DHW heating in a storage tank system Functions of the DHW circuit · DHW heating in a storage tank charging system DHW heating in the storage tank charging system52 EB 5476 EN DHW heating in instantaneous heating system Anl DHW heating with solar system Anl 2, 3, 4, 5 undCirculation over the heat exchanger Circulation pump operation during storage tank chargingIntermediate heating operation Anl 2, 3 Parallel pump operation Anl 2, 3Set-back operation Priority circuit Anl 4, 5, 6, 7, 8Reverse control Thermal disinfection of the DHW storage tank Forced charging of the DHW storage tank Anl 2, 3, 5, 7, 8Forced operation of the pumps Return flow temperature limitationFrost protection FB21 = on Three-step control Condensate accumulation controlProcessing of external demand in RK1 On/off controlReleasing a control circuit over the binary input Flow rate/capacity limitation Limitation using pulse inputLocking manual levels Limitation using 0/4 to 20 mA signalSetting a customized key number Sensor failure Operational faultsCollective error alarm Error status register Temperature monitoringCommunication CommunicationController with RS-232-C port · Pin assignment of RS-232 port left and RS-485 port right Controller with serial RS-485 interfaceDescription of communication parameters to be adjusted Modem time-out t0 Meter bus interfaceFlow rate and/or capacity limitation via meter bus Activating the meter busInstallation Appendix Memory module InstallationPanel mounting Electrical connection TWF Systems Anl 1 to Systems Anl 5 to 80 EB 5476 EN Appendix Function block list Parallel pump Setting only possible after entering key number UP1 Circulation over BA8 12.2 Parameter list 88 EB 5476 EN Maximum flow temperature Can only be set after entering the key number Min. return flow temperature System Anl 9, underfloor heating circuit Min. flow temperature 20 to 130 C 20 C DHW heating DHW heating OFF 20 to 90 C 50 C 20 to 130 C 120 C ST.-NR Sensor resistance tables Technical data Customer data Model code WMZ 2 FB29 = on Parameter settings Appendix Public holidays and vacations SLP Key number 1732 Appendix Index PTC Thermal disinfection EB 5476 EN 0000 Page EB 5476 EN

5476 specifications

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