The most immediate and obvious savings from the Armstrong IVS come as a result of energy savings from variable speed operation compared to fixed speed systems. Many fixed speed systems use valves to reduce system flow and control the temperature. Using a car analogy, that’s the equivalent of running your engine at full power and controlling the speed with the brake. It’s far more efficient to control the speed with the gas pedal – giving the motor only as much gas as it needs.

Variable speed technology allows the pump to be tuned to suit system demand. Not peak demand, but current demand, which varies throughout the day. It means that the system is not continually running at full speed and wasting energy. The resulting energy savings alone can pay for the initial cost of the pump in as little as 2 years.

DON’T SENSORS ALLOW YOU TO DO THE SAME THING?

Sure, but at the expense of greater capital and installation costs. Sensors have to be installed at locations remote from the pump, incurring mounting and wiring costs. And of course, sensors can be susceptible to failure and damage, or require occasional recalibration.

The IVS system doesn’t use remote sensors. It monitors the system requirements from the speed of the pump and the amount off power the unit is drawing. The unit is programmed to adhere to a pre-defined control curve that automatically adjusts speed and pressure to match the system load at all times. The control curve is fully site-adjustable and gives the installer the flexibility to replicate sensor positions at varying distances from the pump. This removes the problems associated with incorrect sensor placement and still provides optimum energy saving