Cleaver-Brooks Hawk |

Cleaver-Brooks Hawk

cb_HawkICSHawk ICS

The CB Hawk ICS is a totally integrated control system embodying precise boiler/burner management control and safety with logic based ancillary devices and functions. The result is a coordinated system which maximizes efficiency, reduces operating costs, and increases productivity; delivering critical real time and historic information with the touch of a screen! Using today’s state of the art technology, the CB Hawk ICS soars to a new level, combining a highly powered high speed processor with sophisticated inter-communication protocol (“Ethernet/IP”) for controlling and monitoring all of the important boiler system operating and safety functions in one synergistic, expandable package.

Key features and functions in base package:

  • Integrated burner management control from pre-purge to post-purge.
  • Flame scanning and amplifying. Processing inputs from solid state sensors measuring pressure and/or temperature.
  • Firing rate control
  • Thermal shock protection
  • Night/day setback
  • Outdoor reset
  • Remote setpoint
  • Lead/lag control for multiple boilers (option)
  • Variable Speed Drive (VSD) capability for combustion air and/or boiler feed pump(s)
  • Auxiliary inputs available for monitoring boiler related devices and conditions.
  • Human machine Interface (HMI) for setting operating conditions and accessing all operating parameters and alarm history. All this with the touch of a screen!
  • Local electronic communication

Monitoring Capabilities Include:

  • Operating parameters, faults and selected I/O’s
  • Stack temperature
  • Combustion air temperature
  • Combustion fan RPM
  • Combustion air pressure
  • Efficiency
  • O2
  • Steam pressure and flow
  • Water temperature
  • Fuel flow
  • Water level
  • Firing rate
  • Faults and fault history

Optional Features and functions include:

  • Parallel control of fuel and air using motor actuator drives; minimizing linkages.
  • Water level monitoring and alarming
  • O2 monitoring and/or trimming
  • Ethernet and internet communication
  • E-mailing, paging and on-line trouble shooting
  • Building management system interfacing
  • Backlit touch screen (optional)






The basis of design called for use of a microprocessor based control system which embraced six (6) important design criteria: Simplicity, Safety, Security, Dependability, Adaptability and Environment. The result is the revolutionary C-B Level Master low water cutoff and pump control using the proven magnetostrictive technology (used for many years in various industries for measuring level and distance relationships) in conjunction with a solid state sensor and microprocessor based controller.


  • Magnetostrictive technology eliminating levers and switches
  • Non contact and non wearing titanium float
  • User friendly controller with easy to read parameters/alarms
  • Uses single phase power to a central connection point
  • Controller uses plug-in connectors for easy exchange
  • Can be used for on/off pump operation or modulating fee


  • Column blowdown reminders and message it’s been done properly or improperly
  • System allows for checking the auxiliary low water cutoff and its proper operation
  • Float movement is constantly checked; stuck float shuts boiler down
  • Electrics and microprocessor circuits checked several times per second for continuity and performance
  • Low water shutdown and alarming
  • High and low water warnings
  • Alarm and blowdown history logging with time and date stamps


  • Password protected regarding level settings and alarm and blowdown history files
  • On going level indication; easy to see and read exactly


  • Alarm and blowdown history logging
  • Blowdown reminders
  • Constant checking of electrics/electronics
  • Remote communication access (RS-232)


  • Direct replacement and retrofittable to all makes of boilers
  • On/off or modulating boiler feed control with same unit


  • C-B Level Master eliminates the mercury!

More Information

Go to the Cleaver-Brooks web site at

Source: Cleaver-Brooks web site and Elizabeth Brown, Marketing Communications for Cleaver-Brooks 1/2005;