Plant hydraulics
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.
With buffer
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).
With primary c
ontroller /
system pump
It is to be set
whether the DHW storage tank receives its heat from the solar collectors.
With solar inte
gration
Speed-controlled pump
Line no. Operating line
5101 Pump speed min
5102 Pump speed max
Only RVS61..
The speed of the charging pump is limited by a minimum and maximum speed.
Speed control
of charging
pump
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).
2358A30
B3
Q3
Y31
B31
B35
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.
2358A30
B3
Q3
Y31
B31
B35
165/258
Siemens Switzerland Ltd User manual RVS61.843, RVS41.813 CE1U2355en_02
HVAC Products 6 The settings in detail 28. September 2009
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