APPLICATION AND USE
For years, hydronic systems were controlled by actuated valves that controlled flow to coils and heat transfer equipment. The main
goal was to control the heat transfer by controlling the flow, but as pressure changed, flow changed and therefore heat transfer was
not efficiently controlled.
Since 1960s control valves designed to maintain design flow regardless of pressure changes in the system has been introduced with
the goal to prevent energy wastes due to hot and cold spots in unbalanced hydronic systems. It was a step forward but not enough
because the heat transfer depends not only on the flow but also on the ΔT between supply and return; lower is the ΔT, lower is the
system efficiency.
In order to meet the energy efficiency need of the Building Automation industry, modern control valves shall be able to directly control the heat transfer and not only the flow: the smart balancing and control valve EBV perfectly fits within this need and it represents
the ultimate solutions for heating groups and air handling units control.
The EBV system is able to measure the pressure difference between upstream and downstream of the valve and to maintain the
correct flow despite pressure variations thus ensuring that the flow rate changes only when the energy demand changes or the ΔT is
outside the specifications.
EBV systems integrates the following functionalities in a unique smart device:
• Pressure independent Control function with ΔT optimizer;
• Energy usage monitoring with Modbus connectivity for a user friendly data analysis;
• Thermal power control function with ΔT optimization;
• Diagnostic/Monitoring available via USB or Modbus-RTU (RS485).
EBV is therefore able to control the coils heat transfer and to guarantee an optimal return temperatures for all operating conditions
with a following high level of efficiency in heating and cooling. Thanks to stable temperature control, you can achieve energy savings
of up to 25% – without sacrificing comfort.
EBV can be used as an intelligent pressure independent balancing and control valve selecting models without supply and return temperature sensors or it can be used as full thermal power control valve selecting models with supply and return temperature sensors.
Furthermore the Modbus-RTU based Energy monitoring capability as well as the diagnostic and condition monitoring function facilitates work, save times as well as ensure comfort and increase energy efficiency in buildings.
