Manual Operation - Siemens RVD230 Basic Documentation

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Manual operation

Manual operation enables the heating plant to be controlled manually during the com-
missioning phase or in the event of fault. It is activated by pressing the
the LED for manual operation is lit and that for the operating mode extinguishes. The
control outputs will be switched as follows:
• The valve on the primary side (for the heating circuit / common flow / precontrolled
flow) will be de-energized. It can be driven to any position by pressing
• The other actuators will be fully closed at 5 times the normal running time and then de-
energized. This means that the controller can no longer drive them (that is, only manu-
ally, if the controller features manual adjustment). With plant types 2–11 and 2–12, the
diverting valve will be deenergized
• The heating circuit, d.h.w., system and intermediate circuit pump as well as the circu-
lating pump – if present – will be activated. The PWM output for speed-controlled
pumps delivers the signal for 100 %. The pump speeds on the data buses also are
100 %
The display shows the flow temperature of the heating circuit (B1); with all plant types
0–x, the d.h.w. flow temperature (B3) will be displayed.
During manual operation, the control functions do not act on the control outputs.
Manual operation is deactivated by pressing the
mode buttons.
The manual operation status can be ascertained but not changed via LPB. In any case,
a heat demand signal of 95 °C (fixed value) is delivered to the heat source.
Basic Documentation RVD230
31 Manual operation
button. Then,
or
button again or any of the operating
.
CE1P2383en
27.05.2004