Ranger Combustion System
Low emissions or high efficiency—
Why should you have to choose?
The Ranger Combustion System produces an
exceptionally stable flame at all firing rates.
Fuel Variety
Capable of firing natural gas, light oil, heavy oil,
digester gas, ethanol, and more, the API offers a
wide range of fuel burning capability.
Advanced Design
Our engineers specifically designed this burner to
eliminate field errors, reduce space requirements,
and facilitate maintenance when needed.
Two models are available: Ranger-RF allows for the
fan to be placed remotely; Ranger-AF is designed for
smaller applications and ease of maintenance.
High Efficiency
The API burner incorporates a VFD for control of FD
fan speed, resulting in significant electrical
reductions, regardless of the type of fuel burned.
Swing open housing allows for
easy maintenance of the
burner.
Removable fan housing.
Positioning knob
with limit switch
extends oil nozzle
life by withdrawing
the oil atomizer
without opening
the burner.
Standard stainless
steel gas manifold
and front head
ensures long lasting
life and ability to burn
corrosive fuels.
External flame
scanners (UV or IR).
Preferred’s Y-jet air
atomized nozzle
provides fine oil
droplets with reduced
atomizing air.
Recessed front
head eliminates
the need for burner
refractory.
Servo positioned flame
shaping device gives the
API the ability to
dynamically match the
flame pattern to furnace
geometry and air
pattern across the
turndown range.
Direct drive parallel positioning servos
.
The Need
• Stricter NOx Emissions Standards
• Lawmakers Pushing for CO2 Reduction
(example: Local Law 87 in NYC)
• Reliable Emissions Compliance with High Turndown,
High Efficiency, and Immediate Backup Fuel Option
• Reduced Maintenance, Parts Replacement, and Service
Requirements
How Does the Ranger Combustion System
Meet this Need?
• Sub 9 ppmc NOx Performance on Natural Gas
• Low Excess Air- Less than 3-4% O2 from 25-100% Firing
Rate
• High Turndown – 10:1 on Natural Gas; 8:1 on #2-#6 Oil
• Oil Backup Fuel Available in Less than 5 minutes.
• No Filters or Mesh Firing Head required.
How is this Technology Different?
• Ultra Low NOx Emissions with High Combustion
Efficiency
• Uses Nominally 25% FGR to Achieve <9ppm NOx
• Fuel and Air are not Premixed
• Typically Safer to Light-off Compared to Premix Burners
• Generally, Significantly Higher Turndown than
Alternatives
Energy Savings Calculator
Burnermate Universal Boiler Controller
• Combustion Control, Flame Safeguard, Draft, and
Feedwater Control
• How does this complete the Ranger Combustion
System?
• Precise Servo Control (0.10 degree deadband)
• Position Pacing
• Low FGR Temperature Hold
• Redundant Flame Scanning for Increased
Reliability
• Draft Control uses Feedforward from Combustion
Curve
EXAMPLE APPLICATION
INSTALLATIONS – OVER 50
BURNERS IN OPERATION
QUESTIONS?