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BurnerMate Universal. A Complete Boiler Control System. Preferred Instruments. Combustion and control business since 1920. Only domestic manufacturer of “linkage-less” controls. Only manufacturer with significant field service department.

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Burnermate universal

BurnerMate Universal

A Complete Boiler Control System


Burnermate universal

Preferred Instruments

  • Combustion and control business since 1920.

  • Only domestic manufacturer of “linkage-less” controls.

  • Only manufacturer with significant field service department.

  • Strong network of representatives are boiler/burner/controls experts.


Preferred instruments new burnermate universal

Preferred Instruments’ newBurnerMate Universal

  • “Linkage-less” controller incorporating:

  • Flame safeguard control

  • Parallel positioning combustion control w/ O2 trim

  • Draft control

  • Drum level control

  • And a whole lot more…


System components

BurnerMate Universal Boiler Controller

System Components

  • Controller Chassis:

  • Includes separate processors for FSG and combustion control in accordance with NFPA 85 paragraph 1.9.3.2.3.

  • Designed for sub-panel mounting.

  • Wiring is by quick disconnect terminal blocks.


System components1

BurnerMate Universal Boiler Controller

System Components

  • High Precision Servos:

  • Available in 3, 15, 37, 70, 140, 280, 420, and 720 ft-lb torques.

  • Triac input with feedback pot allows 0.1° accuracy.

  • All servos are daisy-chained on one digital loop.

  • Mounting kits are available for most existing valves & dampers.


System components2

BurnerMate Universal Boiler Controller

System Components

  • LCD Interface (required):

  • Can be flush-mounted on BMS enclosure or mounted to BMU chassis.

  • 4 x 20 character display is the primary interface to the controller.

  • Displays boiler status, alarms, annunciations, event history, etc.


System components3

BurnerMate Universal Boiler Controller

System Components

Optional 10” touch-screens available.

  • Graphical interface provides additional information, easier operator interface.

  • Modbus, Ethernet, and web-based communications are included for interfacing with EMS, BAS, or other LAN networks.

  • Designed to be flush-mounted in the BMS enclosure or remote-mounted.


Touch screen graphics

BurnerMate Universal Boiler Controller

Touch screen graphics

Boiler overview screens provide current boiler operating conditions in an easy-to-understand graphical format.


Touch screen graphics1

BurnerMate Universal Boiler Controller

Touch screen graphics

Color touch screens include “walk-thru’s” for easy controller configuration.


Touch screen graphics2

BurnerMate Universal Boiler Controller

Touch screen graphics

Loop tuning screens provide familiar loop controller “faceplates” for easy configuration. Over 75 screens are pre-configured.


System components4

BurnerMate Universal Boiler Controller

System Components

  • Optional Communications Module:

  • Inexpensive module allows Modbus, Ethernet, and web-based remote monitoring.

  • BMU Modbus addresses are pre-programmed.

  • Designed to be sub-panel mounted.


System components5

BurnerMate Universal Boiler Controller

System Components

Preferred supplies a choice of three flame scanners:

  • IR, UV, and self-checking UV.

  • All flame scanners use identical military-style quick connect fittings.

  • The BMU will accept any U.L. listed flame scanner.


Flame safeguard functions

BurnerMate Universal Boiler Controller

Flame Safeguard Functions

  • Stages the burner through purge, lightoff, main flame, and shutdown.

  • Supports up to three fuels (oil, natural gas, and a second gas fuel) Fuel changeover can be initiated locally or remotely.

  • Monitors up to 6 recycling limits, up to 33 shutdown limits and one or two flame scanners.

  • All limit inputs are 120 VAC, wired in parallel, and separately annunciated.

  • During a shutdown, all major status bits are recorded and saved for up to the last ten lockouts.

  • Adjustable time delays are available for many limits to avoid nuisance trips.


Flame safeguard functions1

BurnerMate Universal Boiler Controller

Flame Safeguard Functions

  • Optional gas valve leak test logic.

  • Optional oil gun purge logic (blow-thru into the furnace, or suctioned back out of the gun via scavenger pump)

  • High flue gas temperature shutdown (added dry boiler protection)


Fuel air ratio control functions

BurnerMate Universal Boiler Controller

Fuel-Air Ratio Control Functions

  • Jackshaft or parallel positioning combustion control is supported.

  • Up to 8 analog outputs available for fuel/air servos, and VSD’s for FD fan, FGR fan, and ID fan.

  • Up to 15 combustion control points can be programmed.

  • “Off-curve” points available for standby, purge, and light-off positions.

  • Optional O2 trim control is supported.

  • Separate curves available for VSD by-pass mode (in case of VSD failure)


Fuel air ratio control functions1

BurnerMate Universal Boiler Controller

Fuel-Air Ratio Control Functions

  • Low fire and high fire rate limits can be temporarily configured to limit burner travel.

  • Problematic firing rates can be configured to be “skipped over” until the problem is resolved.

  • Burner can be warm-up slowly until FGR temperature reaches setpoint.


Boiler control functions

BurnerMate Universal Boiler Controller

Boiler Control Functions

  • Single, two, or three-element PID feedwater control

  • Adjustable draft control is fully integrated into flame safeguard and fuel-air control algorithms.

  • Firing rate is used as a feed forward for both drum level and draft control.

  • VSD outputs available for ID fan and feedwater pump.


Boiler control functions1

BurnerMate Universal Boiler Controller

Boiler Control Functions

  • Remote setpoint and remote firing rate control.

  • Outdoor air temperature reset

  • Warm standby and domestic hot water override

  • Low fire hold based on boiler shell or flue gas temperature.

  • Steam pressure or hot water control supported.

  • Five auxiliary relays can be configured to control additional boiler auxiliaries.

  • Supervised or automatic water column blowdown & low water level test logic.

  • Boiler cold start function allows for adjustable boiler thermal shock protection.


Ease of operation

BurnerMate Universal Boiler Controller

Ease of Operation

  • No special sensors are required (common switches and transmitters can be used)

  • Preferred supplies flame scanners, or any U.L. listed scanners can be used. (BMU provides 120 VAC and 24 VDC power, and accepts a contact closure for proof of flame and analog input for optional flame intensity.

  • Servo set-up is easy, intuitive, and well-documented.

  • 33 basic parameters configure most control functions.

  • Flame safeguard logic is designed to U.S. standards (NFPA 85)


Security features

BurnerMate Universal Boiler Controller

Security Features

  • Servos are “locked” into place on the fuel air curves. Putting a servo in manual will trip the burner.

  • Safety related parameters can only be changed when the burner is off-line.

  • Fuel-air curve points must be “verified” before the technician can exit commission mode.

  • Four levels of password security enable operators, technicians, engineers, and Preferred factory personnel access to parameter settings.


Product support

BurnerMate Universal Boiler Controller

Product Support

  • BMU is Made in America. It is available only through Preferred and it’s factory trained representatives.

  • All components are in stock.

  • It is supported from the Preferred Utilities factory in Connecticut, outside sales offices in Massachusetts, Illinois, Texas, and Oregon, and factory trained representatives around the country.

  • Preferred has service engineers located throughout the U.S.