RVD120-A – Bộ điều khiển 3 chương trình Siemens

Control of district heat substations, space heating and d.h.w. heating.
Optimized for low return temperatures in district heating networks.

• 3 ready programmed and preselected plant types
• Straightforward, easy-to-understand operation
• Analog adjustment of room temperature setpoint, other adjustments with operating lines
• 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
• Holiday function (via room unit)
• DRT limitation for the reduction of peak loads
• Maximum limitation of the return temperature on the primary side
• Minimum and maximum limitation of the flow temperature
• Automatic summer / winter changeover
• Automatic ECO function
• Pump protection
• Legionella function
• Frost protection function
• Automatic monitoring of sensors with alarm indication
• Relay and sensor tests, manual operation
• Locking function for district heat parameters
• Communication via Modbus
• Display with background lighting

Plant-specific
– 1 pump heating circuit, control of the flow temperature, optionally weather-compensated / weather- and room temperature-compensated / room temperature-compensated
– D.h.w. heating:

• Storage system with integrated heat exchanger and 1 storage tank sensor
• Charging pump

• S55370-C113
• VXP45-20-4
• S55208-V106
• QFA3171