Shipco® Logic Controller for Feed Water Systems (Boiler Feed & Deaerators)

Control Systems & Panels

The Shipco® Type SLC-FWS is an economical method of automating functions on a Shipco® feed water system: boiler feed or deaerator. Modular by design, various configurations depend on end user requirements. The SLC-FWS is a programmable NEMA 4X controller featuring a full color touchscreen display. Support for building automation protocols including Modbus and BACnet are available.

  • Live graphical and numeric indication for water level and temperature via Shipco® Transmitter or differential pressure level transmitter and RTD temperature transmitter.
  • Operates up to 8 boiler feed pumps and 4 transfer pumps with alternating and manual control; pump graphics to indicate status; operate from boiler level signals, maintain feed pressure or with VFDs.
  • Support for modulating feed valves and steam regulators.
  • Failure indication and protection with various high & low water alarms; high & low temperature alarm. Shutoff for high temperature and low water. Alarms for routine maintenance and standby pumps and loss of sensor signal indicators.
  • VFD Max Efficiency Sequence optimizes efficiency by maintaining multiple feed pumps at low speed.
  • Support for additional modulating and solenoid feed valves; transfer pumps; flow meters on makeup, transfer and feed water headers.
  • Specific communication protocol with remote control override capability.

Modulating Level Control

  • Modulating Feed Valve Control.
  • Differential pressure level transmitter or guided float level.
  • RTD temperature transmitter.
  • Alarms for level, temperature, pressure, etc.
  • Up to 2 solenoid feed valves.
  • Up to 2 modulating feed valves.

Deaerator, Surge Tank or Duo (Two-Compartment) System

  • Adds Pump Control.
  • Up to 8 boiler feed pumps and up to 4 transfer pumps.
  • Up to 2 solenoid feed valves (per tank).
  • Up to 2 modulating feed valves (per tank).
  • Up to 2 steam regulators.
  • Alarms for level, temperature, pressure, pump fault, routine maintenance, etc.
  • Alternation and manual sequencing.
  • On/Off operation from boiler level signals or to maintain feed pressure.
  • Continuous for automatic standby.
  • VFD Max Efficiency Sequence.
  • Total and service interval run timers.


  • 6-inch, 10-inch or 15-inch full-color touchscreen display
  • RS232/RS485 (RJ45 modular jack) port
  • Ethernet/LAN port
  • microSD card slot
  • Protocols: Modbus® RTU, Modbus® TCP, BACnet IP or BACnet MS/TP