Siemens RVD120-A, S55370-C109

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

HS Code: 90321020

Coo: Switzerland