Controller-Internal Uncritical Locking Signals; Uncritical Locking Signals From The Data Bus - Siemens RVD240 Basic Documentation

District heating and domestic hot water controller
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For detailed information, refer to chapter 21.
All heat converters that lie in the supply chain of the d.h.w. demanding priority are not
affected by the uncritical locking signal.
Whether the controller shall respond to uncritical locking signal from the data bus can
be selected on operating line 137 (response to uncritical locking signals from the data
bus). The setting does not affect the response to controller-internal locking signals.
Setting operating line 137 Response
0
1

21.3.2 Controller-internal uncritical locking signals

Controller-internal uncritical locking signals always throttle the heating circuits. With
plant type 4–x, the heat converter parallel to d.h.w. will be affected.

21.3.3 Uncritical locking signals from the data bus

Uncritical locking signals from the data bus throttle the heat converters and the heating
circuits.
Basic documentation RVD240
21 Locking signals
Uncritical locking signals from the data bus will be ignored
Uncritical locking signals from the data bus will be adopted
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CE1P2384en
27.05.2004

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