Heat Demand Signal - Siemens RVL471 Basic Documentation

Siemens Building Technologies
HVAC Products
27.2.2

Heat demand signal

Using the DC 0...10 V heat demand signal (terminals Ux–M), the RVL471 can transmit
the heat demand to other devices.
The heat demand corresponds to the heat requisition in °C and - in terms of value - is
identical with the heat requisition that reaches the primary controller via the data bus
(LPB).
The temperature value of the heat demand corresponding to 10 V can be set via oper-
ating line 181.
Voltage signals:
Voltage Temperature when oper-
ating line 181 = 80 °C
DC 0 V
DC 5 V
DC 10 V
Basic Documentation RVL471
27 Communication
Temperature when oper-
ating line 181 = 130 °C
0 °C
40 °C
80 °C
0 °C
65 °C
130 °C
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23.10.2002
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