Siemens RVD240 - Page 9

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Siemens Building Technologies Basic documentation RVD240 CE1P2384en
HVAC Products Contents 27.05.2004
25.2 Sensor test .................................................................................................... 87
25.3 Setpoint test................................................................................................... 87
25.4 Relay test....................................................................................................... 88
25.5 Display of the pump speed ............................................................................ 88
25.6 Display of the digital inputs............................................................................ 88
25.7 Limitations ..................................................................................................... 89
25.8 Software version............................................................................................ 90
26 Function block DRT and maximum limitation of the return temperature ....... 91
26.1 Operating lines .............................................................................................. 91
26.2 Maximum limitation of the primary return temperature .................................. 91
26.2.1 General.......................................................................................................... 91
26.2.2 Maximum limitation in heating mode ............................................................. 92
26.2.3 Maximum limitation in d.h.w. mode ............................................................... 92
26.3 Maximum limitation of the secondary return temperature ............................. 93
26.4 Maximum limitation of the temperature differential (DRT function) ...............94
26.4.1 Mode of operation.......................................................................................... 94
26.4.2 Purpose ......................................................................................................... 94
26.5 Integral action time of the limitation functions................................................ 94
27 Function block Various functions................................................................... 95
27.1 Operating lines .............................................................................................. 95
27.2 Limitation function at contact H5 ...................................................................95
27.3 Suppression of hydraulic creep ..................................................................... 96
27.3.1 Mode of operation.......................................................................................... 96
27.3.2 Mode of operation.......................................................................................... 96
27.4 Raising the reduced room temperature setpoint ........................................... 96
28 Function block Operation locking functions ................................................... 98
28.1 Operating lines .............................................................................................. 98
28.2 Locking settings on the software side............................................................ 98
28.3 Locking of setting level "Locking functions" on the hardware side ................98
29 Combination with PPS devices...................................................................... 99
29.1 General.......................................................................................................... 99
29.2 Combination with room unit QAW50... ..........................................................99
29.2.1 General.......................................................................................................... 99
29.2.2 Overriding the operating mode ...................................................................... 99
29.2.3 Knob for room temperature readjustments.................................................. 100
29.2.4 Controller with operation lock ......................................................................100
29.3 Combination with room unit QAW70 ...........................................................100
29.3.1 General........................................................................................................ 100
29.3.2 Overriding the operating mode .................................................................... 101
29.3.3 Knob for readjusting the room temperature................................................. 101
29.3.4 Impact of the individual QAW70 operating lines on the RVD240 ................ 101