Honeywell BIC..L Excess Air Direct Fired Furnace Burner Series

HTS Krom Schroder Direct Fired Furnace Burners – BIC..L

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Overview

The Honeywell BIC..L is a series of excess air, direct-fired furnace burners designed for industrial thermoprocessing applications requiring precise temperature control and consistent product quality. Operating on a nozzle-mixing combustion principle, gas and air are mixed only at the burner head, producing a high-velocity flame suitable for uniform heat distribution across a wide range of furnace geometries.

The BIC..L series supports ON/OFF cyclic, staged, and modulating control modes across a capacity range of 85 kW to 440 kW. With excess air capability up to approximately 1,500% (λ ≈ 16) and outlet velocities up to 250 m/s, the series delivers high turndown performance in demanding thermal process environments. Installation is horizontal or angled, and the burner is built from cast steel for durability in high-temperature service up to 1,250°C.

Features & Benefits

Capacity range 85 kW to 440 kW — covers a broad range of direct-fired furnace applications from smaller batch processes to higher-output continuous systems
Excess air operation up to λ ≈ 16 (~1,500%) — enables precise atmosphere and temperature control in sensitive thermal processes
High outlet velocity up to 250 m/s — promotes strong recirculation and uniform heat distribution within the furnace chamber
Nozzle-mixing combustion principle — gas and air mix only at the burner head, providing stable combustion and flexible control
Direct spark ignition — eliminates the need for a separate pilot burner, simplifying system design and reducing components
Flame rod supervision standard — provides continuous, reliable flame monitoring integrated directly into the burner
Modulating, staged, or ON/OFF cyclic control — adapts to varying process demand and control system architectures
Preheated combustion air capability up to 250°C — supports heat recovery integration to improve overall system efficiency
Cooling/purge air flow when off — 2 to 6% of rated air flow maintains burner cooling during idle periods, extending service life
Cast steel construction — robust material selection for long-term reliability in high-temperature furnace environments
Horizontal or angled installation — flexible mounting orientation accommodates various furnace configurations

Technical Specifications

Capacity Range: 85 kW to 440 kW (320 to 1,664 × 10³ BTU/h)
Fuel Type: Natural gas; LPG (gaseous); other fuel types on request
Combustion Principle: Nozzle-mixing
Ignition Type: Direct spark ignition
Flame Supervision: Flame rod (standard)
Control Type: ON/OFF cyclic, staged, or modulating
Maximum Furnace Temperature: 1,250°C (higher on request)
Maximum Combustion Air Temperature: ≤ 250°C
Ambient Temperature Range: -20°C to +180°C (-4°F to +356°F)
Excess Air Capability: Up to ≈1,500% (λ up to ≈16)
Outlet Velocity: Up to 250 m/s
Flame Length: 450 to 900 mm (depending on model)
Cooling/Purge Air (Burner Off): 2 to 6% of rated air flow
Installation Orientation: Horizontal or angled
Body Material: Cast steel (GG)
Maintenance Interval: Twice per year (more frequently if combustion media is contaminated)
Approvals: EN 746-2, Machinery Directive 2006/42/EC (Declaration of Incorporation), Eurasian Customs Union, WEEE Directive

Applications

Direct-fired industrial furnaces requiring precise temperature uniformity
Heat treatment processes — annealing, hardening, tempering, and normalizing
Continuous and batch furnace lines in metal processing
Automotive component manufacturing thermal processing
Applications requiring high excess air ratios for controlled atmosphere heating
Furnace systems integrating preheated combustion air or heat recovery
Process lines requiring modulating or staged burner control

Models / Configurations

BIC..L Series — Excess air furnace burners, 85 kW to 440 kW; natural gas and LPG; direct spark ignition; flame rod supervision; horizontal or angled mounting
BIC80T-LB-(H01) — Spare part configuration variant; refer to spare part list documentation for component details

BIC..L Accessories

Refer to the BIC..L Technical Information and Operating Instructions documents for a full list of compatible accessories, spare parts, and system components specific to each model variant.