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
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)
Processing & Performance Metrics
- Turndown Options
- 10:1 or 8:1 turndown configurations
- Emissions
- Designed for ultra‑low NOx and CO across the turndown range
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
Product Configuration & Options
- Number of Rows
- Up to 4 burner rows in a single duct
Overview
- Models
- Straight ULE and Tee ULE
Performance Specifications
- Input Capacity
- 90 to 2700 kBtu/h per module (26 to 791 kW per 300 mm)
Ignition, Flame & Supervision Specifications
- Ignition Type
- Direct Spark Ignition
- Flame Detection
- UV Scanner only (no flame rod option)
Material Specifications
- Housing Material
- Stainless steel housing, for sizes above AB600L, standard steel plate (consult Eclipse for >500 deg F upstream temperatures).
Fuel, Gas & Media Specifications
- Fuel Type
- Natural Gas (alternative fuels require Eclipse consultation)
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.
Actuation, Valve & Motion Control Specifications
- Control Actuator
- Control actuator modulates air butterfly valve
Combustion Design & Characteristics
- Combustion Method
- High‑excess‑air pre‑mix combustion with internal flame recirculation
Product Design & Configuration
- Burner Style
- Available in straight sections, double T geometries, and cross sections.
- Burner Design
- Pre‑mix line burner for direct air heating
Applications & Compatibility
- Application Purpose
- Applications requiring maximum linear heat distribution with ultra‑low emissions
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)
Processing & Performance Metrics
- Turndown Options
- 10:1 or 8:1 turndown configurations
- Emissions
- Designed for ultra‑low NOx and CO across the turndown range
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
Product Configuration & Options
- Number of Rows
- Up to 4 burner rows in a single duct
Overview
- Models
- Straight ULE and Tee ULE
Performance Specifications
- Input Capacity
- 90 to 2700 kBtu/h per module (26 to 791 kW per 300 mm)
Ignition, Flame & Supervision Specifications
- Ignition Type
- Direct Spark Ignition
- Flame Detection
- UV Scanner only (no flame rod option)
Material Specifications
- Housing Material
- Stainless steel housing, for sizes above AB600L, standard steel plate (consult Eclipse for >500 deg F upstream temperatures).
Fuel, Gas & Media Specifications
- Fuel Type
- Natural Gas (alternative fuels require Eclipse consultation)
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.
Actuation, Valve & Motion Control Specifications
- Control Actuator
- Control actuator modulates air butterfly valve
Combustion Design & Characteristics
- Combustion Method
- High‑excess‑air pre‑mix combustion with internal flame recirculation
Product Design & Configuration
- Burner Style
- Available in straight sections, double T geometries, and cross sections.
- Burner Design
- Pre‑mix line burner for direct air heating
Applications & Compatibility
- Application Purpose
- Applications requiring maximum linear heat distribution with ultra‑low emissions
- Air Pressure Requirement : 20 in wc (50 mbar) at burner inlet at maximum input
- Turndown Options : 10:1 or 8:1 turndown configurations
- Standard Burner Length : Longer lengths as engineered orders|Up to 9 ft (2700 mm) standard
- Ratio Control Device : Eclipse‑supplied ratio regulator required
- Number of Rows : Up to 4 burner rows in a single duct
- Models : Straight ULE and Tee ULE
- Input Capacity : 90 to 2700 kBtu/h per module (26 to 791 kW per 300 mm)
- Ignition Type : Direct Spark Ignition
- Housing Material : Stainless steel housing, for sizes above AB600L, standard steel plate (consult Eclipse for >500 deg F upstream temperatures).
- Fuel Type : Natural Gas (alternative fuels require Eclipse consultation)
- Flame Detection : UV Scanner only (no flame rod option)
- Emissions : Designed for ultra‑low NOx and CO across the turndown range
- 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.
- Control Actuator : Control actuator modulates air butterfly valve
- Combustion Method : High‑excess‑air pre‑mix combustion with internal flame recirculation
- Burner Style : Available in straight sections, double T geometries, and cross sections.
- Burner Design : Pre‑mix line burner for direct air heating
- Application Purpose : Applications requiring maximum linear heat distribution with ultra‑low emissions
- Airflow Direction : Process air must flow parallel to burner flame (no cross‑flow)
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