Speed-Controlled Pump - Siemens Albatros2 User Manual

With prim contr/system
pump
With solar integration

Speed-controlled pump

Speed control of charging
pump
Siemens Switzerland Ltd
HVAC Products
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 must be selected whether the DHW storage tank shall receive 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 in storage tank, with primary
controller.
The controller calculates the positioning signal
required to ensure that the DHW setpoint + charging
increase acquired by sensor B35 is achieved.
Heat exchanger outside the storage tank and sensor
B36 in the flow (partial plant diagrams 22, 23)
The controller calculates the charging pump speed
required to ensure that the charging temperature
acquired by sensor B36 is 2 K above the DHW
setpoint.
User manual RVS61.843
6 The settings in detail
Q3
B3
B31
B36
Y31
B35
Q3
B3
B31
B36
B3
Q3
B31
Q33
137/221
CE1U2355en_02
23. November 2007