en – Original instructions
14
3.4 Intended use
The product can be used to pump:
Cold water
Hot water
Always observe the limits indicated in the Technical Data chapter.
The variable speed pump units installed in the SMB booster sets are suitable for the following
applications:
Pressure, level, and flow regulation (open loop systems)
Single or multi pump unit irrigation systems.
3.4.1 Application alternatives
Actuator (constant speed)
The unit operates as an actuator according to speed set point; this is done through user
interface, the corresponding analog input or the communication bus.
Controller (constant pressure)
This mode is set as the default operating mode, and is used for units that run with a single pump
unit.
Cascade serial / Cascade synchronous
The units are connected via the RS485 interface and communicate via the provided protocol.
The combination of the different units which are used in a multi-pump system depends on the
system requirements.
It is possible to run all the pump units in cascade serial mode (default mode for multi pump
systems) and synchronous mode as well. If one unit fails, then each pump unit of the booster set
can become the lead pump unit and can take control.
3.5 Improper use
The product must not be used in closed circuit systems where the difference in pressure between
two points of the system, generally the delivery and suction of the booster set, is controlled by
two sensors for the purpose of keeping it constant.
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General