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Fireye NXF4000 Combustion Efficiency Control

(1 customer review)


Fireye NXF4000, advance combustion efficiency controller, boiler management system, internal flame safeguard, Modbus, 120 VAC, 12 VA, NEMA 1.

Availability: 5 in stock

The Fireye NXF4000 control is an advanced combustion efficiency control system for all types of combustion systems, with an integrated flame safeguard. Best-in-class support for four fuel profiles allows these controls to accommodate a large variety of applications. Up to ten servos can be connected in total, with three sizes available: 4Nm (3 ft.-lb.), 20Nm (15 ft.-lb.) and 50Nm (37 ft.lb.).

  • Four available fuel profiles with up to four connected servos per profile
  • Ten servos can be connected in total with non-monotonic operation
  • Three servo choices: 4Nm (3 ft.-lb.), 20Nm (15 ft.-lb.) and 50Nm (37 ft.lb.)
  • Built-in 24VDC power supply for servos, user interfaces and accessories
  • Internal flame safeguard functionality w/ IR or UV amplifiers for use with standard flame scanners
  • Available with direct-coupled amplifier for use with integrated flame scanners
  • Intelligent valve proving for two- or three-valve systems
  • Input option for airflow switch test
  • Input option for fuel valve proof of closure
  • Five 4-20mA analog inputs are available
  • 15 programmable line-voltage digital inputs available
  • One user-defined 4-20mA analog output is available
  • 3 user-defined line-voltage digital outputs available
  • Optional VFD interface card adds allows up to two VFDs to be connected, with 4-20mA or encoder
    feedback and up to two user-defined 4-20mA analog output.
  • Two optional O2 trim probes available (standard and high temperature) for monitor and control
  • Boiler efficiency calculation available with optional O2 trim
  • Thermal shock algorithm is available for cold starts
  • Up to six boilers can be connected for peer-to-peer sequencing
  • Internal PID load control is available for precise steam or hot water setpoint control
  • External 4-20mA signal can be connected for direct control by building automation or PLC
  • Hot standby function can be used to maintain a hot water setpoint so
    boiler is always ready to make steam quickly
  • SD card slot for backup and restore parameters (standard SD included in carton)
  • Modbus RTU via RS-485 for connection to building automation or PLC
  • BACnet/IP, BACnet MS/TP and Ethernet/IP available via MB485ETH-CG gateway
  • Standard 4.3” touchscreen user interface with virtual four-line display and function buttons
  • Optional 7” or 12” touchscreen user interface with Modbus TCP server, remote VNC viewer and additional
    features can be used with or in place of 4.3” user interface
  • Small footprint with no wiring base (integrated terminal blocks)
  • Expert support from the Adaptive HVAC Supply team



Product Datasheet / Manual / Installation Instruction documents are provided below:


Specification Sheet

Modbus Map


1 review for Fireye NXF4000 Combustion Efficiency Control

  1. David Marks

    So many things to say about Fireye NXF4000. I have not seen a controller that is so easy to learn and operate. It makes parallel position less intimidating due to its simplicity and intuitive menu system. Performance is off the charts… love it!

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Weight 3.2 lbs
Dimensions 10.5 × 8.5 × 7.25 in
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