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Application Self-optimizing, weather-sensitive flow temperature control in hot water heating systems and hot water temperature control for up to three control loops ■ Allows communication with a process control system. The TROVIS 5479 District Heating Controller provides weather-sensitive flow temperature control in heating systems incorporating a maximum of three heating circuits. The return flow temperatures can be limited with respect to the outdoor temperature. Drinking water heating can be included in the control process either in the primary or in a secondary circuit. Special features: • Adaptation of the control parameters • Optimization without and with room sensor • Short-time adaptation • Delayed outdoor temperature adaptation • Automatic summertime/wintertime changeover • Time and outdoor temperature-based summer mode • Thermal disinfection of the hot water storage tank • Forced pump operation • Option of external connection of the heat demand • Connection to Modbus is possible • RS-485 interface for communication with a bus system, or RS-232 interface for communication with a modem • Optional interface for meter bus Versions TROVIS 5479 (Fig. 1) ■ District heating controller with RS-232 or RS-485 interface Option: Meter bus-master module Fig. 1 ■ TROVIS 5479 District Heating Controller
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Inputs and outputs (Fig. 2) The input and output assignments of the district heating controller are determined by the entered system code number (for example, see Figs. 11 and 12). Pt100/Pt1000, Pt100/PTC and Pt100/NTC sensors (also several combinations of each) can be used to measure the required temperatures. The measured outdoor temperature can also be applied to the controller as a current signal in the range from 0 to 20 mA. The district heating controller has an input for each control loop to connect a potentiometer. The heat output or volume flow of the system can be limited in two...
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Adaptation of the controllers heating curve (Figs. 4 and 5) The district heating controller provides an option of automatically adapting the heating curve to the required system conditions when a room sensor is connected. The controller determines the correlation between flow temperature and measured outdoor temperature depending on the room temperature. Minimum or maximum flow temperature limitation is supported. Optimizing switch-on and switch-off times The district heating controller is capable of automatically optimizing the switch-on and switch-off times of the heating system in...
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System code numbers Technical data Inputs Sensor inputs Binary inputs Further inputs Fig. 8 ■ Power supply unit for meter bus-master module
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Shared analog ground Analog output Analog input Analog input for external connection of heat demand Outdoor temperature sensor for control loops 1 to 3 Binary output 1 to 4 Shared sensor ground Potentiometer for control loops 1 to 3 Shared ground Control valve heating circuit 1 to 3 Pulse-counting input Control valve primary circuit Room temperature sensor for control loops 1 to 3 Room temperature sensor for control loops 1 to 3 Return flow temperature for drinking water heating Storage sensor On Storage sensor Off Storage charging pump Heat exchanger charging pump Circulation pumps in...
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Fig. 12 ⋅ System code number 6 Weight VL RL WWL Approx. 0.6 kg Flow line Return flow line Hot water pipe SAMSON AG ⋅ MESS- UND REGELTECHNIK Weismüllerstraße 3 ⋅ 60314 Frankfurt am Main ⋅ Germany Phone: +49 69 4009-0 ⋅ Fax: +49 69 4009-1507 Internet: http://www.samson.de KL Cold water pipe ZL Circulation pipe For other abbreviations, see
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