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HAWK INTEGRATED BOILER CONTROL SYSTEM

HAWK INTEGRATED BOILER CONTROL SYSTEM
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HAWK INTEGRATED BOILER CONTROL SYSTEM

Product catalog summary
Overview
The HAWK Integrated Boiler Control System is a comprehensive solution that combines a Programmable Controller and Burner Management Controller with other boiler controls. It features a graphical Human Machine Interface (HMI) for displaying parameters, fault annunciation, and alarm history, and allows configuration and control access. The system supports Modbus, Ethernet, and Internet communication, interfacing with building/plant automation systems.
Features and Benefits
  • Integrates burner sequencing, safety, firing rate, fuel-air ratio, and operating limit controls.
  • Touch screen HMI for easy navigation and monitoring.
  • Alarm/fault indication with history and diagnostics.
  • Remote monitoring and diagnostics capabilities.
  • Optional features include email and pager alarm forwarding, O2 monitoring, and building automation system interface.
Product Offering
Each HAWK system includes a programmable controller, touch screen HMI, Modbus communication interface, and sensors. Optional features include OPC server software, lead/lag control, and variable speed drive for the combustion air fan motor.
Engineering Data
  • Supply voltage: 120 VAC (+10%/-15%) 50 or 60 Hz.
  • Operating temperature limits: 32 to 130°F.
  • Humidity: 85% RH continuous, non-condensing.
Sample Specifications
  • Factory-equipped with a pre-configured Programmable Controller and HMI.
  • Major components include a programmable controller, touch screen HMI, and sensors.
  • Provides automatic sequencing, flame proving, and modulating control of fuel and combustion air.
  • Safety provisions include integrated burner management and boiler controls with password protection.
Optional Equipment/Features
  • Lead/Lag Control for multiple boiler systems.
  • Parallel Positioning hardware.
  • O2 analyzer and external O2 trim system.
  • Email and paging via Ethernet.
Actuator Specifications
Actuators control dampers and fuel valves with a reversing motor and position feedback. They feature 90-degree rotation with 30-second timing, 36 in-lb torque, and 0.1% resolution. Electrical specifications include 120 VAC, pulse position control signal with 0-10 VDC feedback, and continuous duty. Enclosures are NEMA 1 minimum, with optional NEMA 3 or 4. Approvals include UL listing or FM approval, operating in temperatures from 0-130°F.
Control Description
The control system uses parallel positioning with cross-limiting, ensuring no simultaneous fuel firing. The air control compares the firing rate control signal with the corrected fuel actuator position signal, using the highest value for the combustion air actuator. A velocity limiter is included, and the system shuts down if an unacceptable error is detected.
Fuel and FGR Control
Fuel control compares the firing rate control signal with the air actuator position signal, using the lowest value for the function generator, which outputs a control signal for the fuel actuator. The function generator requires a minimum of 10 break points. FGR control follows a similar process. Both systems include velocity limiters and shut down upon detecting errors.
Combustion Air Fan Variable Speed Drive
This drive improves boiler efficiency and reduces energy consumption by providing variable speed output to the combustion air fan blower motor. It features soft starting, Modbus communication, and displays drive process information and faults on the boiler control panel.
Engineering Data
Specifications include ambient operating temperatures of 32-122°F, altitude up to 3300 ft without derating, and various electrical tolerances and protections. The motor is suitable for variable speed drive service.
Oxygen Monitoring System
The system monitors boiler exit flue gas O2 concentration, aiding in efficiency calculations. It features an integrated zirconia oxygen analyzer, user-configurable alarms, and provides accurate efficiency calculations.
Ethernet Communication
The Ethernet communication package enables communication between the HAWK controller and other devices, supporting building automation systems and internet connectivity. It includes features like email alerts for boiler alarms.
Paging and Remote Dial-Up Access
This system allows paging of alarms via modem and remote dial-up access for monitoring and troubleshooting. It requires customer-provided paging services and dedicated phone lines.
Lead/Lag Control for Two Boiler Systems
The system provides lead/lag control for two boilers, optimizing efficiency and reducing maintenance costs. It includes sequences for lead/lag start with modulation, ideal for steam boilers.
Product Offering
Cleaver-Brooks provides the HAWK integrated boiler control system for hot water boilers, including boiler controls and pressure or temperature transmitters for mounting in the common header.
Sample Specifications
HAWK — Lead/Lag for Two-Boiler Systems
  • General: The system supports Lead/Lag or Unison Modulation for starting and stopping boilers based on steam pressure or hot water temperature compared to setpoints. The lead boiler is activated first, with the lag boiler starting when the lead boiler's firing rate reaches a specific point.
  • Modulation: Lag boiler modulation begins after the lead boiler reaches maximum firing rate. Unison Modulation ensures equal firing rates for both boilers.
  • Hot Standby: The system includes a provision for keeping the lag boiler in hot standby based on water temperature signals.
Application and System Requirements
This system is suitable for full modulation burners using the CB-HAWK ICS advanced boiler control system. All Lead/Lag control logic is contained within the boiler controller, eliminating the need for additional control panels.
Features and Benefits
  • Controls: Maintains steam pressure or hot water supply temperature based on system load demand, compensating for losses between boiler and header.
  • Benefits: Maximizes system efficiency, reduces cycling and boiler wear, and optimizes fuel savings. The system includes automatic rotation of boiler firing sequences based on elapsed time.
Lead/Lag Start Options
  • Lead/Lag Modulation: The lead boiler operates at full capacity before starting the lag boiler, which begins modulation when the lead boiler reaches maximum firing rate.
  • Unison Modulation: All boilers operate at the same firing rate as the lead boiler, ideal for hot water boiler systems.
HMI (Human Machine Interface)
The master panel includes an HMI for displaying and selecting parameters such as available boilers, firing sequence, control output, and setpoints. It allows for automatic or manual rotation and individual boiler start and stop points.
Application and System Requirements
This option is applicable to full modulation burners using the HAWK advanced boiler control system. Logic for Lead/Lag control resides in the Master Control Panel, with communication via Ethernet or hard wiring.
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Catalog excerpts

HAWK INTEGRATED BOILER CONTROL SYSTEM-1

Model HAWK Integrated Boiler Control System HAWK INTEGRATED BOILER CONTROL SYSTEM The HAWK is a state-of-the-art boiler control system that integrates the functions of a Programmable Controller and Burner Management Controller, as well as other boiler operating and ancillary controls. The HAWK system incorporates a graphical Human Machine Interface (HMI), which displays boiler parameters, fault annunciation and alarm history, as well as providing access to boiler configuration and control functions. The HAWK system includes complete boiler firing rate controls for steam or hot water boilers. The HAWK’s advanced technology features utilize the latest communication methods, such as Modbus, Ethernet, and the Internet. The HAWK also has the capability of interfacing with various building/plant automation systems. Additional features include lead/lag capability; e-mailing and paging of alarms, remote monitoring, and HMI alarm history printing. The HAWK Integrated Control System may be used on most types of steam or hot water boilers, including firetube, industrial watertube, and commercial watertube. It is designed to operate with a gas, oil, or combination burner using a single-point modulating control or a parallel-positioning fuel-air ratio control system. In addition to installation on new boilers, the HAWK can be added as a retrofit to existing boilers. Contact your local authorized Cleaver-Brooks representative for details. The HAWK system is offered in Advanced, Intermediate, and Base packages. Table D-1 shows a feature comparison. FEATURES AND BENEFITS Advanced Technology Standard Features: • Integrates control function of burner sequencing and safety with firing rate, fuelair ratio, and operating limit controls • Incorporates a programmable controller • Touch screen graphical human machine interface (HMI) • Monitors and displays connected boiler parameters • Optimizes boiler firing rate control • Alarm/fault indication and history • On-screen fault diagnostics • Built-in two boiler lead/lag control • Night/day setback control • Thermal shock protection • Remote modulation • Remote setpoint • Assured low fire cut-off • Assured start permissive safety interlocking Section D02-1 Rev. 09-09

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HAWK INTEGRATED BOILER CONTROL SYSTEM-2

Model HAWK Integrated Boiler Control System • High stack temperature alarm and shutdown • Boiler efficiency calculations Optional Features: • E-Mail and pager alarm/fault forwarding • Fuel-air ratio control • Display of boiler water level with optional CB Level Master (Advanced and Intermediate systems only) • Building/plant automation system interface • Remote monitoring and diagnostics • O2 monitoring and trim • Internet parts and service lookup • Lead/lag capability for multiple boiler systems • Variable speed drive on combustion air fan • Expanded annunciation Safety Provisions and Diagnostics:...

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HAWK INTEGRATED BOILER CONTROL SYSTEM-3

Model HAWK Integrated Boiler Control System • Displays boiler operating status (e.g. “Warm Up”, “Auto/Manual”, “Boiler On”, fuel selection, etc.). • Displays boiler firing rate control parameters and settings. • Provides remote monitoring and diagnostic capabilities (optional). • Touch screen controls simplify screen navigation and boiler configuration • Reliable and accurate controls using microprocessor-based programming Simplified Servicing: • Diagnostics and fault history, up to 100 faults, through touch screen display simplifies troubleshooting procedures • E-Mail forwarding and paging of...

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HAWK INTEGRATED BOILER CONTROL SYSTEM-4

Model HAWK Integrated Boiler Control System ENGINEERING DATA • • • • • Supply voltage: 120 VAC (+10%/-15%) 50 or 60 Hz. Maximum total connected load: 1200 VA Operating temperature limits: 32 to 130°F 85% RH continuous, non-condensing, humidity 0.5G continuous vibration Section D02-4 Rev. 09-09

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HAWK INTEGRATED BOILER CONTROL SYSTEM-5

Model HAWK Integrated Boiler Control System SAMPLE SPECIFICATIONS HAWK INTEGRATED BOILER CONTROL SYSTEM PART 1 1.1 GENERAL GENERAL A. Each unit shall be factory equipped with a boiler control system providing technology and functions equal to the Hawk boiler control system. B. Each Boiler Control System shall be factory equipped with a pre- configured Programmable Controller and Human Machine Interface (HMI). PART 2 2.1 PRODUCTS MAJOR SYSTEM COMPONENTS A. Major system components shall include: 1. Programmable controller 2. Touch screen HMI 3. Modbus communication interface to burner management...

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HAWK INTEGRATED BOILER CONTROL SYSTEM-6

Model HAWK Integrated Boiler Control System 6. Touch screen graphical operator interface and monitoring a. Manual control of the boiler-firing rate utilizing control screens on the HMI to increment and decrement the firing rate b. On screen indication of burner management controller status and diagnostics c. On screen real-time display of all connected process parameters d. On screen display of system alarms and faults e. On screen history of alarms and faults f. On screen water level indication (optional) and alarm(s) g. Printing Alarm/Fault history 7. E-mail or paging of boiler alarms (with...

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HAWK INTEGRATED BOILER CONTROL SYSTEM-7

Model HAWK Integrated Boiler Control System c. Password protection of programmable controller Logic d. Password protection of parallel positioning control (if used) D. The Boiler Control System shall provide annunciation and diagnostics: 1. Active alarm annunciation 2. Provide historical alarm information for on screen display 3. Detects and isolates an alarm, and reports internal circuit faults 4. Printer output capable for logging alarms 5. Capability of printing alarm history of date, time, cycle of occurrence and date and time of acknowledgement up to the most recent 100 faults 6. English...

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HAWK INTEGRATED BOILER CONTROL SYSTEM-8

Model HAWK Integrated Boiler Control System 7. Water temperature transmitter (hot water boilers): provides an analog signal to the programmable controller for indication of boiler water temperature; utilized for thermal shock protection, on/off, and modulating control of the burner. 8. Water (shell) temperature sensor (steam boilers): measures and transmits a signal to the programmable controller in relation to boiler water temperature; used for indication and thermal shock protection. H. Optional equipment/features (see also individual Boiler Book sections below) 1. Lead/Lag Control for multiple...

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