HTS Eclipse – ImmersoJet IJ Series Immersion Tube Burners

Overview

The Eclipse ImmersoJet® (IJ) is a nozzle-mix, tube-firing immersion burner designed to fire at high velocities through small-diameter immersion tubes. High-velocity combustion gases scrub the inner tube surfaces, producing the highest heat transfer rate of any immersion burner available and delivering faster heat-up times than competing designs. The standard burner package includes a packaged blower, actuator control motor, integral butterfly valve, ratio regulator, burner body, combustion chamber, nozzle, rear cover, and spark and flame rods.

Available in five models (IJ-2 through IJ-8) covering tube sizes from 2 to 8 inches in diameter, the ImmersoJet operates on natural gas, propane, or butane and supports low-pressure packaged, high-pressure packaged, and remote blower configurations. Maximum firing inputs range from 190,000 BTU/h to 4,800,000 BTU/h depending on model and blower selection. System efficiencies in excess of 80% are achievable with proper tube design.

Features & Benefits

• Highest heat transfer rate available – High-velocity combustion gases scrub the inner tube surface, maximizing heat transfer and reducing burner surface temperature.
• Faster heat-up times – Delivers faster heat-up than any other immersion burner design, improving process throughput.
• Space-saving tube requirements – Small-diameter tube design saves valuable space inside the tank and allows longer effective tube runs for higher efficiency.
• Combustion chamber outside the tank – Reduces space inside the tank, provides more uniform heat distribution, and simplifies access for maintenance.
• Multiple blower configurations – Available with integral low-pressure blower, integral high-pressure blower, or less-blower (remote blower) to match system requirements.
• Modulating on-ratio control – Air-proportional ratio regulator maintains accurate air/gas ratio across the full modulation range for efficient, low-emission combustion.
• Low CO emissions – CO output below 100 ppm across the operating range.
• Unique nozzle design – Ensures quiet operation; fuel-specific nozzles and orifices available for natural gas, propane, and butane.
• Flexible flame detection – Compatible with flame rod or UV scanner flame monitoring systems.
• Factory-assembled package – Shipped ready to install, minimizing field assembly time and commissioning effort.

Technical Specifications

• Burner Type: Nozzle-mix, tube-firing (indirect fired)
• Models: IJ-2, IJ-3, IJ-4, IJ-6, IJ-8
• Tube Sizes: 2 in. (50 mm) / 3 in. (80 mm) / 4 in. (100 mm) / 6 in. (150 mm) / 8 in. (200 mm)
• Fuels: Natural Gas, Propane, Butane (fuel-specific nozzles and orifices required)
• Maximum Input – Low-Pressure Packaged Blower: IJ-2: 190,000 BTU/h (56 kW) | IJ-3: 440,000 BTU/h (129 kW) | IJ-4: 830,000 BTU/h (243 kW) | IJ-6: 2,000,000 BTU/h (586 kW)
• Maximum Input – High-Pressure Packaged Blower: IJ-2: 235,000 BTU/h (69 kW) | IJ-3: 550,000 BTU/h (161 kW) | IJ-4: 1,000,000 BTU/h (293 kW) | IJ-6: 2,500,000 BTU/h (733 kW)
• Maximum Input – Remote Blower: IJ-2: 370,000 BTU/h (108 kW) | IJ-3: 850,000 BTU/h (249 kW) | IJ-4: 1,800,000 BTU/h (528 kW) | IJ-6: 3,600,000 BTU/h (1,055 kW) | IJ-8: 4,800,000 BTU/h (1,406 kW)
• Minimum Input (all models, all blowers): IJ-2/IJ-3: 25,000–28,000 BTU/h | IJ-4/IJ-6/IJ-8: 100,000–300,000 BTU/h
• System Efficiency: Greater than 80% achievable with proper tube design
• CO Emissions: <100 ppm
• Flame Detection: Flame rod or UV scanner
• Ignition: 6,000 VAC full-wave spark transformer (one per burner)
• Control Method: Modulating on-ratio; air butterfly valve with integral ratio regulator
• Piping Connections: NPT or BSP (model-dependent sizes)
• Approvals: Meets Eurasian Customs Union technical specifications; installation must comply with applicable local codes (NFPA 86, EN 746-2, UL, FM, CSA as required by jurisdiction)
• Weight Range: 45 lbs (20 kg) for IJ-2 remote blower to 290 lbs (131 kg) for IJ-6/IJ-8 packaged blower configurations

Applications

• Spray wash tanks requiring high-capacity, fast heat-up immersion heating
• Dip tanks for industrial parts cleaning and surface treatment
• Storage tanks, including fire sprinkler system water storage
• Iron phosphate and zinc phosphate process tanks (limited capacity configurations; stainless steel tube required)
• Cooking oil tanks with controlled heat flux (limited to 50 BTU/h per in² of tube area)
• Industrial process tanks where small-diameter immersion tube space savings are required
• Multi-burner zone systems using a common remote blower

Models / Configurations

• IJ-2 – 2 in. (50 mm) tube; low-pressure blower to 190,000 BTU/h, high-pressure blower to 235,000 BTU/h, remote blower to 370,000 BTU/h (propane/butane) or 340,000 BTU/h (natural gas)
• IJ-3 – 3 in. (80 mm) tube; low-pressure blower to 440,000 BTU/h, high-pressure blower to 550,000 BTU/h, remote blower to 850,000 BTU/h
• IJ-4 – 4 in. (100 mm) tube; low-pressure blower to 830,000 BTU/h, high-pressure blower to 1,000,000 BTU/h, remote blower to 1,800,000 BTU/h
• IJ-6 – 6 in. (150 mm) tube; low-pressure blower to 2,000,000 BTU/h, high-pressure blower to 2,500,000 BTU/h, remote blower to 3,600,000 BTU/h
• IJ-8 – 8 in. (200 mm) tube; high-pressure packaged blower to 3,500,000 BTU/h, remote blower to 4,800,000 BTU/h
• All models available with low-pressure (6 in. w.c.) or high-pressure (10 in. w.c.) packaged blower, or less-blower for use with a customer-supplied remote blower
• Fuel-specific nozzles and orifices provided for natural gas, propane, and butane configurations

ImmersoJet IJ Accessories

• Replacement Nozzles & Orifices – Fuel-specific components for natural gas, propane, and butane; required when changing fuel type
• Actuator Mounting Parts Kit – Coupling, washers, and hardware for control motor installation on the air butterfly valve shaft
• Inlet Air Filter with Replaceable Filter Element – Strongly recommended to extend system life and maintain stable combustion settings
• Draft Breaking Hood – Open connection between tube exhaust and stack; reduces sensitivity to atmospheric conditions and lowers exhaust temperature
• UV Scanners – 90° UV scanner, straight UV scanner, self-check UV scanner, and solid-state UV/IR scanner options for flame monitoring (refer to applicable Bulletin for model selection)
• Flame Rod Assembly – Flame sensing option; refer to Bulletin 832 for installation details
• Spare Parts Kits (IJ-2 through IJ-8) – Model-specific spare parts kits available; see Spare Part Lists in Documentation below

Documentation