HTS Eclipse – Single-Ended Radiant Tube Burner (SER)

Overview

The Honeywell Eclipse Single-Ended Radiant Tube Burner (SER) Version 5 is a compact, self-recuperative nozzle-mixing burner designed for indirect-fired industrial furnace applications. The burner and an enhanced-performance recuperator are co-axially mounted inside a single-ended radiant tube, internally transferring combustion exhaust heat back to the burner air supply in a counter-flow pattern to deliver high preheat temperatures. A unique dual-finned combustor design increases heat transfer surface area, providing exceptional heat flux and temperature uniformity across three tube diameter sizes — SER450 (4-1/2″), SER600 (6″), and SER800 (8″).

The SER V5 eliminates the need for external recuperators and insulated piping, reduces fuel costs from 35% to 55% compared to sealed ambient air burners, and cuts NOx emissions by more than 50% over conventional recuperative burners. Burners can be installed either vertically or horizontally and are compatible with metallic or ceramic outer tube configurations. The SER V5 design is also field-retrofittable to existing SER V1 and V3 installations using an adapter flange.

Features & Benefits

• Dual-finned combustor design provides increased heat transfer surface for greater fuel savings — fuel cost reduction from 35% to 55% over sealed ambient air burners
• NOx emissions reduced by more than 50% over conventional recuperative burners through internal flue gas recirculation and staged combustion
• Self-recuperative design eliminates the need for external recuperators and insulated piping, simplifying system design and reducing installation cost
• Insulated mounting flange and exhaust housing improve heat recovery and create a cooler working environment around the burner
• Ceramic inner tube sections enable higher heat flux rates and promote longer tube life compared to metallic inner tubes
• Exceptional heat flux and temperature uniformity across the radiant tube for consistent furnace heating and improved product quality
• Vertical or horizontal installation in nearly any furnace — compatible with both gas-fired and electric furnace environments
• Direct spark ignition with UV scanner flame detection for reliable automated operation
• Simple burner adjustment with integral orifice plates for straightforward commissioning
• Easy retrofit of SER V1 and V3 installations to V5 using the V1/V3-to-V5 adapter flange — no new mounting extension required
• Available in three tube diameters (4-1/2″, 6″, 8″) with radiant tube effective lengths tailored to the application

Technical Specifications

• Available sizes: SER450 (4-1/2″ / 114 mm), SER600 (6″ / 152 mm), SER800 (8″ / 203 mm) tube diameters
• Fuel: Natural gas (contact factory for mixed gas applications)
• Maximum chamber temperature: 1850°F (1010°C); contact factory for temperatures above 1750°F (954°C)
• Typical input range — SER450: 50,000–140,000 Btu/h (13–37 kW); SER600: up to higher ratings per design guide; SER800: contact factory
• Low firing rate: 10,000 Btu/h (3.0 kW) at 150–220% excess air (all models)
• Air inlet connection: 1″ NPT/Rc 1.0; Fuel inlet connection: 1/2″ NPT/Rc 0.5; Exhaust outlet: 3″ NPT
• Piping: NPT or BSP interface available
• Ignition: Direct spark ignition (6 kVAC)
• Flame detection: UV scanner
• Effective length range — SER450: 900–2450 mm (35.4–96.5 in) in 50–100 mm increments; SER600 and SER800: contact factory for full range
• Mounting extension length: 50–250 mm (2.0–9.8 in) in 25 mm increments
• Outer tube options: Metallic or ceramic
• Burner weight (without mounting extension, inner and outer tubes): approximately 36 lbs (16.5 kg)
• Standards compliance: Limit controls and safety equipment must comply with NFPA 86 (UL, FM, CSA listing) and/or EN 746-2 (CE mark) per applicable codes

Applications

• Indirect-fired continuous and batch-type furnaces with controlled atmospheres
• Heat treating — tempering, hardening, and annealing
• Continuous processing lines — galvanizing and continuous annealing
• Metal production and finishing furnaces
• Automotive and industrial manufacturing thermal processing
• Applications requiring controlled NOx emissions and high fuel efficiency
• Retrofit replacement of SER V1 and V3 burner installations

Models / Configurations

• SER450 Ceramic – 4-1/2″ (114 mm) diameter burner with ceramic outer tube; maximum input 140,000 Btu/h (37 kW); effective lengths 900–2450 mm in 50–100 mm increments
• SER450 Metallic – 4-1/2″ (114 mm) diameter burner with metallic outer tube; maximum input 100,000 Btu/h (26 kW); effective lengths 800–1900 mm in 50 mm increments
• SER600 Ceramic – 6″ (152 mm) diameter burner with ceramic outer tube; higher input capacity; effective lengths per design guide
• SER600 Metallic – 6″ (152 mm) diameter burner with metallic outer tube; effective lengths per design guide
• SER800 Ceramic – 8″ (203 mm) diameter burner with ceramic outer tube; highest input capacity in the series; effective lengths per design guide
• SER800 Metallic – 8″ (203 mm) diameter burner with metallic outer tube; effective lengths per design guide
• All models available with horizontal or vertical mounting orientation; NPT or BSP piping connections

Single-Ended Radiant Tube Burner (SER) Accessories

The SER burner system is supported by a range of system components, spare parts, and accessories. Consult the applicable spare parts list and design guide for complete component selection.

• V1/V3-to-V5 Adapter Flange – Allows direct retrofit of SER V5 burners onto existing V1 or V3 mounting extensions without modification to the furnace wall
• Mounting Extension – Adjustable-length mounting extension (50–250 mm) for accommodating varying furnace wall thicknesses; bolts to furnace casing
• Ceramic Inner Tube Sections – Short (185 mm) and long (235 mm) ceramic inner tube sections assembled inside the outer tube to form the effective burner length
• Metallic Outer Tube – Steel outer radiant tube for metallic tube configurations; available in SER450, SER600, and SER800 diameters and multiple effective lengths
• Ceramic Outer Tube – Ceramic outer radiant tube for high-temperature or high-flux ceramic configurations; includes adapter plate and support flange hardware
• UV Scanner – Ultraviolet flame detection scanner compatible with the SER burner flame monitoring system
• Spark Rod / Igniter – Direct spark ignition rod for 6 kVAC ignition transformers
• Ratio Regulator – Gas/air ratio control regulator for proportional air-fuel control across the burner firing range
• Insulation Sleeve – Insulating sleeve for mounting flange area; example: insulation sleeve for SER800 355 mm length (part 10048395)

Documentation