Siemens RVD240 - Suitable Room Units; Suitable Valve Actuators; Communication; Documentation

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Siemens Building Technologies Basic documentation RVD240 CE1P2384en
HVAC Products 1 Summary 27.05.2004
For the control of the primary return temperatures (B7, B71, B72), it is also possible to
use commercially available sensors with Pt 500 sensing elements.
• For the outside temperature:
− Outside sensor QAC22 (sensing element LG-Ni 1000)
− Outside sensor QAC32 (sensing element NTC 575)
• For the room temperature:
PPS-compatible sensors must be used. The following units are available:
− Room temperature sensor QAA10
• For the storage tank temperature:
− Cable temperature sensor QAP21.3
− Immersion temperature sensors QAE2...
1.3.2 Suitable room units
• Room units QAW50...
• Room unit QAW70
1.3.3 Suitable valve actuators
All actuators from Siemens with the following features can be used:
• Electric or electrohydraulic actuators with a running time of 10...900 seconds
• 3-position control
• Operating voltage AC 24 V...AC 230 V
1.3.4 Communication
Communication with other devices, controllers, etc., is possible:
• Via LPB, e.g. assignment of d.h.w., reception of radio signal, master / slave assign-
ments for the time switch, reception of outside temperature signal
• Via M-bus, e.g. reading setpoints and actual values, or output control for space heat-
ing
1.3.5 Documentation
Type of documentation Classification number
Data Sheet RVD240 N2384
Operating Instructions RVD240 B2384
Installation Instructions RVD240 G2384
Data Sheet QAW50... N1635
Data Sheet QAW70 N1637
Installation Instructions QAW70 G1637
Data Sheet QAA10 N1725
Data Sheet "LPB Basic System Data" N2030
Data Sheet "LPB Basic Engineering Data" N2032
Basic Documentation M-Bus P5361