RVL480 – Bộ điều khiển lò hơi 1 mạch Siemens

Key functions
Weather-compensated flow temperature control, with or without room influence
6 preprogrammed plant types are provided

Plant system

• Control of a mixing valve serving a heating zone (space heating)
• Control of a burner (1- or 2-stage)
• Control of a valve in the primary return of a heating zone with district heat connection
• Demand-dependent control (precontrol) of a mixing valve / of the boiler temperature / of a heat exchanger (heat demand signal via data bus)

Additional functions
The RVL480 offers the following functions (no submodules or extra devices required):

• Display of parameters, actual values, operating states and fault status signals
• 7-day program with 3 heating periods per day
• 2 additional programs, each with 3 switching periods per day
• Automatic summer/winter changeover
• Holiday program (up to 8 holiday periods per year)
• Optimum start/stop in accordance with the heating program (with or without room influence)
• Automatic ECO function, depending on the outside temperature and the type of building construction
• Optional remote selection of operating modes (via room unit or external switch)
• Scalable DC 0…10 V output for passing on the heat request to other devices
• Quick setback and boost heating
• Preselection of flow temperature setpoint via external contact
• Minimum and maximum limitation of the flow temperature
• Minimum and maximum limitation of the return temperature (shifting / constant)
• Maximum limitation of the room temperature
• Communication with other devices via the data bus
• Limitation of the return temperature differential (DRT) for district heat applications
• Frost protection and pump protection
• Flow temperature alarm

• RVL481
• S55720-S518
• S55499-D200
• S55720-S119