Application Brochure

© 2010 A 132 - 04/10 4 of 8
System Operation:
The Pump Sequencer 132 provides 2-stage pump operation.
Piping Details The first stage pump and the second stage pump are piped in parallel in the system.
Pump Demand The Pump Demand is powered continuously. When the 132 is not in warm weather shut down, the control turns on the
first stage pump to provide flow in the system.
2-Stage Demand When additional flow is required, the pressure differential switch closes and provides power to the 2-Stage Demand.
When a 2-Stage Demand is received, the second stage pump contact closes. The first stage and second stage pumps operate
simultaneously to provide flow in the system.
All control functions and specifications are listed in the Product Catalog I 000 and Data Brochure D 132.
Application A132-2