Design Envelope technology is a demand based intelligent control solution that models equipment and system behavior, monitors actual system conditions, and dynamically adjusts equipment operation to match system demand. Design Envelope technology is at the core of Armstrong’s groundbreaking advances in building performance. Design Envelope technology enables the greenest, most flexible and most cost effective fluid-flow and HVAC systems on the planet – resulting in both, lowest installed and lowest operating cost with the same equipment

Generation 5 pumps, including Tango parallel pumps above, now meet the IE5 efficiency standard for motors. The new models can deliver up to 96.6% motor efficiency. This includes the new Design Envelope Tango parallel pumps and Design Envelope Vertical In-Line pumps up to 10 hp.

Design Envelope Permanent Magnet pumps that are engineered to deliver 20% lower operating costs than variable speed pumps with standard induction motors.

The new pumps are available with motors ranging from 15 hp to 50 hp, and operate at NEMA Ultra-Premium Efficiency levels that exceed the efficiency targets of both the US Department of Energy and the European Union.

Better performance at higher RPMs means that in some cases a smaller Design Envelope Permanent Magnet Pump can deliver the same flow and pressure as a larger, more expensive competing model,” said David Lee, Offering Manager, Armstrong Fluid Technology. “These new pumps also feature smaller dimensions and are less expensive to purchase and install because permanent magnet motors offer a substantial reduction in both size and weight.

Beyond the motor efficiency, a number of additional design innovations make the new Design Envelope pumps more energy-efficient and cost-effective:

Armstrong’s patented Parallel Sensorless Control stages multiple pumps and regulates output for best efficiency across the entire pump array, saving 10-30% in operating costs
Adjustable design points and setpoint based on the actual on-site conditions
A quadratic pressure control curve that provides more efficiency than a linear pressure control curve

A constant-flow function for maintaining a desired flow rate in recirculation applications
Advanced connectivity via Armstrong’s Pump Manager, a cloud-based performance tracking service, provides industry-leading analytics and insights along with alerts, alarms and data storage