Explore BTN350-650GC/E BLU: Low-NOx Quiet Heat Solutions

When reliable heat is essential and emission limits keep tightening, the BTN350-650GC/E BLU series offers a straightforward answer. Covering 1.2–6.25 MW in four frame sizes, the line keeps NOx below 80 mg/m³ (3 % O₂) on gas without external catalysts, while giving plant managers the choice of mechanical cam control (GC) or full electronic modulation (GE).
Two Regulation Paths, One Common Chassis
GC models use a single three-phase servomotor and precision cam to move both air damper and fuel valve. The linkage is factory-set, so start-up is fast and no programming tool is required.
GE models add independent servos for air, gas (and oil when fitted). A 4–20 mA or Modbus signal lets the burner follow boiler load in real time, holding excess-air within ±1 % of set-point across a 10:1 turn-down.
Both versions share the same hinged combustion head, stainless-steel blast-tube and IP40 electrics, so spares are interchangeable and delivery times stay short.
Built-In NOx Reduction, Not Bolt-On
Low emissions come from the flame shape, not from add-on hardware. A staged, lean-head holder lowers peak temperature; internal flue-gas recirculation is shaped into the combustion air casing. The result is stable combustion at 3 % O₂ with NOx ≤ 80 mg/m³ on natural gas and ≤ 120 mg/m³ on light oil. Figures are verified on a portable analyser at the factory and can be repeated on site without retuning.
Dual-Fuel Ready, Change-Over on the Fly
All BLU burners are prepared for dual-fuel operation. A separate gear pump and high-pressure atomiser are mounted on the same hinge, so oil mode is available by adding only the pump motor and nozzle. Fuel switch is automatic and bumpless; air-fuel curves for gas and oil are stored in the same controller, eliminating manual adjustments when the market shifts.
Roof-Top Service with One Spanner
Daily checks are visible from the front: oil temperature gauge, filter condition window and UV cell sight glass. Annual maintenance needs only a 13 mm spanner; the burner door swings open, the mixing head slides out as a cartridge, and the boiler casing stays closed. All electrical plugs are keyed and IP44, so downtime is measured in minutes, not shifts.
Global Documentation, Local Support
 Commissioning can be carried out by a local technician through the built-in display or a free mobile app; no licence dongle or laptop is required. Remote support is available via VPN if site access is restricted.
Summary
The BTN350-650GC/E BLU series delivers 1.2–6.25 MW of steady heat, keeps NOx low by design, and lets operators choose either cam-based simplicity or full electronic precision. Dual-fuel hardware is built in, service is tool-light, and documentation is travel-ready—making the burner a quiet, dependable partner for boilers, dryers and thermal-oil heaters worldwide.