line and duct burners
Linnox
Designed for High Performance with Ultra-Low Emissions, the Linnox line style burner is highly customizable with your choice of inputs per foot and up to 4 rows to fit your space and capacity needs.
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Overview
Linnox ULE Burners Deliver Ultra Low Emissions and Uniform Heat. The Eclipse Linnox ULE burner is designed for use in any direct or indirect fired air heating application requiring state-of-the-art burner technology. Where excellent heat distribution, temperature uniformity, best in class low emissions, and simple robust controls are the decision points in product selection and specification, the Linnox ULE is the industry standard. Linnox burner operation is based on a high excess air pre-mix combustion that keeps flame temperatures low while burner geometry establishes an internal recirculation flame pattern. This allows for very low emissions at a high turndown rate (10:1) while maintaining extremely stable combustion. Specifically, the emissions in the undiluted flue gasses are less than 15 ppm NOx at nominal input, establishing the Linnox burner as the lowest NOx burner of its kind. The Linnox Tee ULE configuration option provides multiple rows of burner modules to increase burner inputs up to 45 MM Btu/h. Eclipse designs custom Linnox ULE systems to meet your specific application requirements.
Features & Benefits:
Features & Benefits:
- High performance and ultra low emissions
- Excellent heat distribution and temperature uniformity
- Design supports wide range of inputs/unit of length
- Up to 10:1 turn down
- NOx emissions are less than 15 ppm @ 3% O2
- CO emissions are less than 100 ppm @ 3% O2
- Robust ratio regulator controlled gas/air ratio
Specifications
Overview
- Models
- Straight ULE and Tee ULE
Motor Specifications
- Control Motor Specifications
- Rotation ≤2 rpm (≈30 s/90 deg typical); ≥25 in-lb (2.8 Nm) torque; 90 deg stroke; continuous or high/low modulating; reversible.
Air & Combustion Air Specifications
- Air Pressure Requirement
- 20 in wc (50 mbar) at burner inlet at maximum input
- Airflow Direction
- Process air must flow parallel to burner flame (no cross‑flow)
Dimensions & Length Specifications
- Standard Burner Length
- Longer lengths as engineered orders
- Up to 9 ft (2700 mm) standard
Control, Logic & Functional Behavior
- Ratio Control Device
- Eclipse‑supplied ratio regulator required
Combustion Design & Characteristics
- Combustion Method
- High‑excess‑air pre‑mix combustion with internal flame recirculation
Installation & Mounting Specifications
- Mounting Options
- Mounting plate for installation into process air duct (insulated or non‑insulated)
Actuation, Valve & Motion Control Specifications
- Control Actuator
- Control actuator modulates air butterfly valve
Ignition, Flame & Supervision Specifications
- Flame Detection
- UV Scanner only (no flame rod option)
- Ignition Type
- Direct Spark Ignition
Performance, Flow & Capacity
- Turndown Ratio
- 10:1 or 8:1 turndown configurations
Product Configuration & Options
- Number of Rows
- Up to 4 burner rows in a single duct
Performance Specifications
- Input Capacity
- 90 to 2700 kBtu/h per module (26 to 791 kW per 300 mm)
Product Design & Configuration
- Burner Design
- Pre‑mix line burner for direct air heating
- Burner Style
- Available in straight sections, double T geometries, and cross sections.
Applications & Compatibility
- Applications
- Applications requiring maximum linear heat distribution with ultra‑low emissions
Fuel, Gas & Media Specifications
- Fuel Type
- Natural Gas (alternative fuels require Eclipse consultation)
Processing & Performance Metrics
- Emissions
- Designed for ultra‑low NOx and CO across the turndown range
Material Specifications
- Material
- Stainless steel housing; for sizes above AB600L, standard steel plate (consult Eclipse for >500°F upstream temperatures).
Overview
- Models
- Straight ULE and Tee ULE
Motor Specifications
- Control Motor Specifications
- Rotation ≤2 rpm (≈30 s/90 deg typical); ≥25 in-lb (2.8 Nm) torque; 90 deg stroke; continuous or high/low modulating; reversible.
Air & Combustion Air Specifications
- Air Pressure Requirement
- 20 in wc (50 mbar) at burner inlet at maximum input
- Airflow Direction
- Process air must flow parallel to burner flame (no cross‑flow)
Dimensions & Length Specifications
- Standard Burner Length
- Longer lengths as engineered orders
- Up to 9 ft (2700 mm) standard
Control, Logic & Functional Behavior
- Ratio Control Device
- Eclipse‑supplied ratio regulator required
Combustion Design & Characteristics
- Combustion Method
- High‑excess‑air pre‑mix combustion with internal flame recirculation
Installation & Mounting Specifications
- Mounting Options
- Mounting plate for installation into process air duct (insulated or non‑insulated)
Actuation, Valve & Motion Control Specifications
- Control Actuator
- Control actuator modulates air butterfly valve
Ignition, Flame & Supervision Specifications
- Flame Detection
- UV Scanner only (no flame rod option)
- Ignition Type
- Direct Spark Ignition
Performance, Flow & Capacity
- Turndown Ratio
- 10:1 or 8:1 turndown configurations
Product Configuration & Options
- Number of Rows
- Up to 4 burner rows in a single duct
Performance Specifications
- Input Capacity
- 90 to 2700 kBtu/h per module (26 to 791 kW per 300 mm)
Product Design & Configuration
- Burner Design
- Pre‑mix line burner for direct air heating
- Burner Style
- Available in straight sections, double T geometries, and cross sections.
Applications & Compatibility
- Applications
- Applications requiring maximum linear heat distribution with ultra‑low emissions
Fuel, Gas & Media Specifications
- Fuel Type
- Natural Gas (alternative fuels require Eclipse consultation)
Processing & Performance Metrics
- Emissions
- Designed for ultra‑low NOx and CO across the turndown range
Material Specifications
- Material
- Stainless steel housing; for sizes above AB600L, standard steel plate (consult Eclipse for >500°F upstream temperatures).
- Models : Straight ULE and Tee ULE
- Control Motor Specifications : Rotation ≤2 rpm (≈30 s/90 deg typical); ≥25 in-lb (2.8 Nm) torque; 90 deg stroke; continuous or high/low modulating; reversible.
- Air Pressure Requirement : 20 in wc (50 mbar) at burner inlet at maximum input
- Standard Burner Length : Longer lengths as engineered orders|Up to 9 ft (2700 mm) standard
- Ratio Control Device : Eclipse‑supplied ratio regulator required
- Combustion Method : High‑excess‑air pre‑mix combustion with internal flame recirculation
- Airflow Direction : Process air must flow parallel to burner flame (no cross‑flow)
- Mounting Options : Mounting plate for installation into process air duct (insulated or non‑insulated)
- Control Actuator : Control actuator modulates air butterfly valve
- Flame Detection : UV Scanner only (no flame rod option)
- Turndown Ratio : 10:1 or 8:1 turndown configurations
- Number of Rows : Up to 4 burner rows in a single duct
- Input Capacity : 90 to 2700 kBtu/h per module (26 to 791 kW per 300 mm)
- Ignition Type : Direct Spark Ignition
- Burner Design : Pre‑mix line burner for direct air heating
- Burner Style : Available in straight sections, double T geometries, and cross sections.
- Applications : Applications requiring maximum linear heat distribution with ultra‑low emissions
- Fuel Type : Natural Gas (alternative fuels require Eclipse consultation)
- Emissions : Designed for ultra‑low NOx and CO across the turndown range
- Material : Stainless steel housing; for sizes above AB600L, standard steel plate (consult Eclipse for >500°F upstream temperatures).
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