HTS Krom Schroder Direct Fired Furnace Burners – BIO, BIOA, ZIO

Overview

The Honeywell BIO, BIOA, and ZIO are direct-fired gas burner series designed for industrial furnace applications requiring reliable, high-temperature combustion performance. Each series is distinguished by its housing material — BIO features cast steel, BIOA uses aluminium (AlSi), and ZIO is constructed from sheet steel — and all are engineered for use with either a burner quarl (refractory block) or an extended steel burner tube.

These nozzle-mixing burners cover a capacity range of 40 to 1000 kW and support multiple fuel types including natural gas, LPG, coke oven gas, town gas, and biogas. With air preheat capability up to 600°C and maximum furnace temperatures up to 1600°C, the BIO/BIOA/ZIO series is well suited for demanding thermal processing environments across a wide range of industries.

Features & Benefits

• Multiple housing materials – Cast steel (BIO), aluminium/AlSi (BIOA), and sheet steel (ZIO) housings allow selection based on thermal load, weight, and application requirements.
• Wide capacity range – Available from 40 to 1000 kW (approximately 151,000 to 3,782,000 BTU/h) to suit a broad range of furnace sizes and process heat demands.
• High air preheat capability – Supports combustion air preheat up to 600°C (BIO/ZIO) and up to 200°C (BIOA), enabling efficient use of recuperative heat recovery systems.
• High-temperature furnace compatibility – Maximum furnace temperatures up to 1600°C with burner block, and up to 600°C with attachment tube.
• Flexible fuel compatibility – Accepts natural gas, LPG, propane/butane, coke oven gas, town gas, and biogas; low calorific value gases available upon request.
• Nozzle-mixing combustion – Nozzle-mix design provides stable, controllable flames across a wide turndown range.
• Multiple control modes – Supports on/off, modulating, pilot rate, staged low/high, and cascade control configurations.
• Integrated ignition option – Available with an integrated ignition lance for simplified installation and commissioning.
• Internal insulation option – BIOW and ZIOW variants include steel housing with ceramic (RCF/ASW) internal insulation for thermally demanding environments.
• Flexible connections – Gas connection is threaded; air connection is threaded or flanged (BIOA: tube connection), accommodating various piping configurations.

Technical Specifications

• Capacity range: 40 to 1000 kW (151 to 3,782 × 10³ BTU/h)
• Burner sizes: 50 to 200
• Burner length: 50 to 1000 mm
• Combustion principle: Nozzle-mixing
• Outlet velocity: Up to 85 m/s depending on configuration
• Flame length: 25 to 200 cm depending on model
• Maximum furnace temperature: Up to 1600°C (2912°F) with burner block; up to 600°C (1112°F) with attachment tube
• Air preheat capability: Up to 600°C (BIO/ZIO); up to 200°C (BIOA)
• Combustion air temperature range: BIO/ZIO: ≤450°C; BIOA: ≤200°C
• Ambient temperature range: -20 to +180°C (-4 to +356°F)
• Fuel types: Natural gas, LPG, propane/butane, coke oven gas, town gas, biogas
• Ignition type: Direct spark; integrated pilot available
• Flame supervision: Flame rod (standard); UV sensor (optional)
• Control type: On/off, modulating, pilot rate, staged low/high, cascade
• Housing material – BIO: Cast steel
• Housing material – BIOA: AlSi aluminium
• Housing material – BIOW/ZIOW: Steel with ceramic internal insulation (RCF/ASW)
• Gas connection: Threaded
• Air connection: Threaded or flanged (BIOA: tube connection)
• Recommended maintenance interval: Twice per year (more frequent if combustion media is contaminated)
• Certifications/Approvals: Machinery Directive 2006/42/EC (Declaration of Incorporation); EN 746-2 (industrial thermoprocessing equipment); Eurasian Customs Union; REACH Regulation (BIOW/ZIOW); WEEE Directive

Applications

• Industrial furnaces requiring direct-fired gas burners with high-temperature capability
• Incinerators and thermal oxidizers
• Industrial dryers using hot combustion gas or indirect heating
• Hot-air generators for process heating
• Cold air, hot air, flat flame, and high-temperature combustion configurations
• Processes utilizing recuperated (preheated) combustion air for improved energy efficiency
• Applications requiring biogas or low calorific value gas combustion (upon request)

Models / Configurations

• BIO – Cast steel housing; suitable for combustion air temperatures up to 450°C; available with burner quarl or extended steel burner tube; sizes 50–200, capacity 40–1000 kW.
• BIOA – Aluminium (AlSi) housing; combustion air temperature up to 200°C; tube air connection; lighter weight alternative to cast steel versions.
• BIOW – Steel housing with internal ceramic insulation (RCF/ASW); designed for higher thermal load environments; REACH compliance applies due to insulation material.
• ZIO – Sheet steel housing; combustion air temperature up to 450°C; threaded or flanged air connection; suitable for burner quarl or extended tube configurations.
• ZIOW – Sheet steel housing with internal ceramic insulation (RCF/ASW); for high-temperature applications requiring additional thermal protection at the burner housing.

BIO, BIOA, ZIO Series Accessories

Consult the Honeywell Thermal Solutions ProFi configurator and PartDetective tools for model-specific accessories and spare parts. Documented accessories referenced in product literature include:

• Integrated ignition lance – Factory-installed option providing direct spark ignition within the burner assembly.
• Internal insulation (ceramic) – Available on BIOW and ZIOW variants; steel housing with RCF/ASW ceramic lining for thermally demanding installations.
• Flame rod assemblies – Standard flame supervision component for BIO/BIOA/ZIO series burners.
• UV flame sensors – Optional ultraviolet flame detection as an alternative to standard flame rod supervision.
• Flame tube FPT – Extended steel burner tube for use in place of a refractory burner quarl; selectable via Honeywell’s online FPT selection tool.
• BVA / VAG accessories – Referenced in conjunction with BIO/IC 20/IFS 258 system configurations; refer to function animation documentation.

Documentation