Siemens RVA47.320 - Page 10

10/166
Siemens Building Technologies Basic Documentation RVA47.320 CE1P2379E
HVAC Products Summary 15.07.2002
• Temperature adjustment with the setpoint knob
• 7-day or 24-hour program for the heating circuit and d.h.w. heating
• Automatic button for efficient operation throughout the year
• D.h.w. button
• Manual operation at the touch of a button
• Output and input tests to aid commissioning and functional checks
• Straightforward selection of operating mode via buttons
• Change of operating mode via a remote switch (via contact H1)
• Heat generation lock or minimum demand for heat with the remote switch (via
contact H1)
• Service connection facility for local parameter settings and data logging
• D.h.w. heating with charging pump or via BMU with diverting valve
• D.h.w. control with temperature sensor or control thermostat
• Selectable priority for d.h.w. heating
• Selectable d.h.w. heating program
• Adjustable boost of the d.h.w. charging temperature
• Reduced setpoint of the d.h.w. temperature
• Protection against discharging of d.h.w.
• Automatic d.h.w. push
• Legionella function
• Communication via the Local Process Bus (LPB)
• Communicating via point-to-point interface (PPS)
• Controllers of other manufacture can deliver their heat demand signal by closing
potential-free contact H1
• Controllers of other manufacture can deliver their analog heat demand by using DC
0...10 V signals
• Input for cascade flow temperature sensor
• Input for cascade return temperature sensor
• Integrity of system architecture with all RVA... controllers
• Can be extended to include 40 heating circuits (with central bus power supply)
• Optional remote supervision
• Error messages (own faults, faults of LPB devices, faults of PPS devices)
• Logging the individual BMU operating hours
• Logging the number of device operating hours
Operation
D.h.w.
Use in extensive
systems
Logging