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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 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. • Strong network of representatives are boiler/burner/controls experts.
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…
BurnerMate Universal Boiler Controller System Components • Controller Chassis: • Includes separate processors for FSG and combustion control in accordance with NFPA 85 paragraph 126.96.36.199.3. • Designed for sub-panel mounting. • Wiring is by quick disconnect terminal blocks.
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.
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.
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.
BurnerMate Universal Boiler Controller Touch screen graphics Boiler overview screens provide current boiler operating conditions in an easy-to-understand graphical format.
BurnerMate Universal Boiler Controller Touch screen graphics Color touch screens include “walk-thru’s” for easy controller configuration.
BurnerMate Universal Boiler Controller Touch screen graphics Loop tuning screens provide familiar loop controller “faceplates” for easy configuration. Over 75 screens are pre-configured.
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.
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.
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.
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)
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)
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.
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.
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.
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)
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.
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.