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Siemens Building Technologies
Basic Documentation RVP540 / RVP550
CE1P2488en
HVAC Products
Description of the heating engineer settings
18.10.2002
Operating line 142 (sensor assignment):
101...109
Sensor B73 can be assigned to a free sensor terminal between 101
and 109.
---
No assignment made.
Raising the return temperature
If the return temperature from the consumers is lower than the temperature at the se-
lected sensor (operating line 483), the return can be preheated by diverting it via the
lower part of the storage tank. It is thus possible to preheat the return with solar energy,
for example.
Lowering the return temperature
If the return temperature from the consumers is higher than the temperature at the se-
lected sensor (operating line 483), the return can be used to preheat the lower part of
the storage tank. As a result, the return temperature continues to drop which, in the
case of a condensing boiler, leads to higher efficiency.
The relevant settings are to be made on operating lines 480…483.
Return diversion can be integrated in the plant diagram as follows:
Example:
B4
B41
Sp 2
ZuFu 1
B73
23
93
Z
0
1
Sol 6
B6
Q5
K8
0
1
0
1
Y15 (Y 15)
Effect
Application example
