MAXON NP-LE & NP/RG AIRFLO Burners

Honeywell MAXON NP-LE / NP-RG AIRFLO industrial burner

Technical Specifications

NP-LE / NP-III heat input	Up to 300 kW/ft HHV, approximately 984 kW/m
NP-I / NP-II / RG-IV heat input	Up to 150 kW/ft HHV, approximately 492 kW/m
Heating method	Direct-fired fresh-air heating
Fuel	Gas; permitted fuel depends on subtype
Combustion air	Supplied by the process airstream
NP-LE air velocity	8.5–15 m/s reference operating range

Ratings vary by size and configuration. HHV/LHV values are fuel heat input, not useful process heat output.

MAXON NP-LE & NP/RG AIRFLO Burners – 2 original PDFsZIP

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Product Overview

MAXON AIRFLO burners heat fresh process air directly as it moves through the burner section. The NP and RG designs use oxygen from the passing airstream, so they do not require a separate combustion-air blower. Modular burner sections can be assembled into a pattern suited to the duct.

NP-LE is the low-emissions member of the family, developed for direct-fired make-up-air and process-air heating. Standard NP/RG and NP-LE configurations have different firing and airflow requirements. The selected subtype must therefore be matched to the air-handling equipment rather than chosen from linear capacity alone.

The Airstream Is Part of the Burner System

Because the passing air supplies combustion oxygen, the conditions through the burner section are fundamental to operation. Total fan capacity alone does not establish those conditions: duct geometry, air distribution and the operating flow range matter as well. The modular layout allows the firing pattern to follow the air passage, while the appropriate materials and low-pressure options depend on the chosen version.

WHERE IT WORKS

Applications

NP-LE AIRFLO in continuous-flow grain dryers. Manufacturer application example.

Industrial make-up-air systems

AIRFLO is intended for direct-fired heating of incoming fresh air. The burner adds heat within the air handler, making it relevant where the ventilation process accepts direct-fired air. Duty is established from the incoming airflow and required temperature increase.

Fresh-air process heating

For equipment supplied with a continuous fresh airstream, the burner can be arranged across the duct to distribute heat. The lowest operating flow deserves the same attention as the peak condition, because combustion depends on the air passing through the burner section.

Air-handler burner replacement

An existing AIRFLO installation can be reviewed using the subtype, burner pattern and duct arrangement. Air-profile conditions and fan operation should be checked before choosing a replacement. NP-LE offers an emissions-focused option, with the actual result determined for the complete operating conditions.

Choosing the Configuration

NP-LE and NP/RG variants have different airflow and firing characteristics. Their linear capacities cannot be applied without the corresponding process-air conditions.

Product FAQs

Selection, supply and retrofit guidance for your air-heating project.

NP AIRFLO selection

Is AIRFLO suitable for our air-heating process?

AIRFLO is intended for direct-fired fresh-air heating, including make-up-air equipment and suitable process-air systems. The passing airstream supplies combustion oxygen, so its operating conditions are part of the selection.

Tell us what the equipment heats and whether it uses fresh or recirculated air. Any recirculation or unusual air composition needs a separate suitability review.

Can we select a burner from heat input and duct size alone?

Those are useful starting points. Selection also needs the minimum and maximum fresh-air flow, inlet and target temperatures, and air distribution through the burner section.

NP-LE and NP/RG variants have different firing and airflow requirements. Share the available gas pressure, burner layout and any emissions target so the subtype and configuration can be checked together.

Supply & retrofit

What should be included in the quotation?

Tell us whether you need a burner assembly, replacement sections or associated components. If the enquiry includes ignition, flame supervision, gas-train or control components, list them as part of the requested scope.

Availability and configuration are confirmed during quotation, with included items and exclusions identified so you can compare the proposal with your existing equipment.

Can AIRFLO replace the burner in our existing air handler?

A retrofit needs a check of the existing subtype, burner pattern, air profile, gas supply and control interfaces.

Along with nameplate and installation photos, share a duct layout, P&ID (piping and instrumentation diagram), and electrical or control drawings if available. These help identify items to retain and changes to assess before a replacement is agreed.

How are price and lead time confirmed?

Price and lead time depend on the selected subtype, burner size and layout, requested components, quantity and delivery country.

For a retrofit, include your planned shutdown date and identify any equipment you want to retain. A quotation can then state the confirmed supply scope and current availability; the required delivery date should be agreed before ordering.

What if we do not have all the technical information yet?

Start with the application, whether the project is new or a retrofit, and any model details or photos you have. Add the airflow, temperature rise and gas supply information you know.

You can mention available P&ID or electrical drawings in the enquiry and share them by email during follow-up. Missing drawings do not prevent an initial discussion.

Product enquiry

MaxonNP-LE / NP-RG AIRFLO

Part code

Tell us what the equipment heats, whether this is a new installation or retrofit, and the airflow and temperature rise if known.

Planning a retrofit?

Along with the nameplate and installation photos, available P&ID (piping and instrumentation diagram) and electrical or control drawings help us understand the existing system.

Drawings are optional. Mention them below and share them by email during follow-up.