RVD250-A district heating controller, Siemens, S55370-C125

Multifunctional heating controller for use in district heating substations and district heating plants with LPB and M-bus communication. Suited for one heating circuit with d.h.w. heating in instantaneous systems or with storage tank. 28 programmed plant types. Operating voltage AC 230 V. Key features: - Optimized for low return temperatures in district heating networks. - Display of time of day time program setpoints actual values limitations errors etc. - Optional remote operation via room unit - 2 independent switching programs each with 3 occupancy times per day - Yearly clock with automatic summer- / wintertime changeover - Power and / or volumetric flow limitation in combination with heat meter - Pump and valve protection - Automatic monitoring of sensors with display of alarm - Locking function for district heat parameters - Optional suppression of hydraulic creep - Frost protection function - DRT limitation for the reduction of peak loads and of idle heat - Maximum limitation of the return temperature on the primary side - Minimum and maximum limitation of the flow temperature - Optimum start / stop control of the heating system - Automatic ECO function - Legionella function - Forced charging function for plant with storage tank - Cooling down protection for the primary supply lines - Solar d.h.w. heating - D.h.w. heating with electric immersion heater - Refill function - Selectable heating period Plant-specific: - Precontrol internal and interconnected - 1 mixing or pump heating circuit - D.h.w. heating with selectable priority: - Instantaneous systems - Storage charging system - Storage system with integrated heat exchanger - Circulating pump, 2 charging pump -

Manufacturer code: S55370-C125

Code: S55370-C125

Manufacturer: SIEMENS

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Specification

Code: S55370-C125

Description

Multifunctional heating controller for use in district heating substations and district heating plants with LPB and M-bus communication. Suited for one heating circuit with d.h.w. heating in instantaneous systems or with storage tank. 28 programmed plant types. Operating voltage AC 230 V. Key features: - Optimized for low return temperatures in district heating networks. - Display of time of day time program setpoints actual values limitations errors etc. - Optional remote operation via room unit - 2 independent switching programs each with 3 occupancy times per day - Yearly clock with automatic summer- / wintertime changeover - Power and / or volumetric flow limitation in combination with heat meter - Pump and valve protection - Automatic monitoring of sensors with display of alarm - Locking function for district heat parameters - Optional suppression of hydraulic creep - Frost protection function - DRT limitation for the reduction of peak loads and of idle heat - Maximum limitation of the return temperature on the primary side - Minimum and maximum limitation of the flow temperature - Optimum start / stop control of the heating system - Automatic ECO function - Legionella function - Forced charging function for plant with storage tank - Cooling down protection for the primary supply lines - Solar d.h.w. heating - D.h.w. heating with electric immersion heater - Refill function - Selectable heating period Plant-specific: - Precontrol internal and interconnected - 1 mixing or pump heating circuit - D.h.w. heating with selectable priority: - Instantaneous systems - Storage charging system - Storage system with integrated heat exchanger - Circulating pump, 2 charging pump -

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