Plant Hydraulics; Speed-Controlled Pump - Siemens RVS41.813 User Manual

Plant hydraulics

With buffer
With primary controller /
system pump
With solar integration

Speed-controlled pump

Only RVS61..
Speed control of charging
pump
Siemens Switzerland Ltd
HVAC Products
Line no. Operating line
5090 With buffer
No ¦ Yes
5092
With primary controller / system pump
No ¦ Yes
5093
With solar integration
No ¦ Yes
If there is a buffer storage tank, enter whether the DHW storage tank can draw heat
from it.
When using alternative heat sources, the buffer storage tank temperature is used as a
control criterion for the release of additional heat sources.
It is to be set whether the DHW storage tank receives its heat via the primary controller
or with the help of the system pump (depending on the type of plant).
It is to be set whether the DHW storage tank receives its heat from the solar collectors.
Line no. Operating line
5101 Pump speed min
5102 Pump speed max
The speed of the charging pump is limited by a minimum and maximum speed.
To ensure that the pump operates reliably on startup, it is operated at maximum speed
for the first 10 seconds.
Speed control of charging pump Q3
Heat exchanger in the storage tank and sensor B36 in
the return.
The controller calculates the charging pump speed
required to ensure that the return temperature
acquired by sensor B36 is 2 K above the storage tank
temperature (B3).
Heat exchanger outside the storage tank, with primary
controller.
The controller calculates the charging pump speed
required to ensure that the DHW setpoint + charging
increase acquired by sensor B35 is achieved.
User manual RVS61.843, RVS41.813
6 The settings in detail
Y31
B35
Q3
B3
B31
Y31
B35
Q3
B3
B31
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CE1U2355en_02
28. September 2009