Flagro FVO-400LTRC – 390,000 BTU Indirect Fired Heater-Oil -Trailer/Light Tower
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The Flagro FVO-400LTRC Indirect-Fired Heater Trailer combines 390,000 BTU/hr of heating, an 8 kW generator, and a 15-foot LED light tower in one self-contained system. Designed for construction, industrial, and temporary heating applications, it delivers 4,000 CFM of heated airflow.
Key Specifications:
- Heating: 390,000 BTU/hr
- Airflow: 4,000 CFM
- Generator: 8 kW / 120V
- Light Tower: 15′ Mast, Four LED Lights
- Fuel: No. 1 / No. 2 Fuel Oil or Diesel
- Fuel Tank: 300 Gallons
- Duct Connections: Dual 12″ Supply, 16″ Return
- Trailer: Single Axle, 3″ Pintle Hitch
Nationwide shipping available. Contact us for pricing and availability.
The Flagro FVO-400LTRC 390,000 BTU Indirect-Fired Heater Trailer combines commercial-grade heating, an integrated diesel generator, and an elevated LED light tower in one self-contained, trailer-mounted system.
Designed for construction sites, industrial facilities, temporary structures, and remote jobsite applications, the FVO-400LTRC delivers 390,000 BTU/hr of heating capacity and 4,000 CFM of heated airflow.
The trailer features a Flagro FVO-400RC indirect-fired heater with air recirculation, a durable 16-gauge 304 stainless steel heat exchanger, and a large 300-gallon fuel tank for extended operation.
An integrated 8 kW generator supplies onboard electrical power, while a 15-foot light tower with four LED fixtures provides illumination for nighttime operations and poorly lit work areas.
The single-axle trailer includes 15-inch wheels, safety chains, and a 3-inch pintle hitch for transportation between jobsites.
For contractors and industrial operations requiring temporary heat, lighting, and generator power, the Flagro FVO-400LTRC provides three essential jobsite functions in one integrated package.
Key Features of the Flagro FVO-400LTRC
- 390,000 BTU/hr Heating Capacity: High-output indirect-fired heating for commercial and industrial applications.
- 4,000 CFM Airflow: Moves heated air through compatible supply ducting.
- 3-in-1 Trailer System: Combines an indirect-fired heater, generator, and light tower.
- 8 kW Integrated Generator: Provides onboard 120V single-phase electrical generation.
- 15-Foot LED Light Tower: Two-stage mast equipped with four LED lights.
- 300-Gallon Fuel Tank: Large onboard fuel storage for extended jobsite operations.
- Indirect-Fired Heating: A heat exchanger separates normal combustion exhaust from the supplied heated air.
- Stainless Steel Heat Exchanger: Constructed from 16-gauge 304 stainless steel.
- Diesel-Fired Engine: Liquid-cooled diesel engine with electric starting.
- Air Recirculation Capability: Designed with a 16-inch return-air inlet.
- Dual 12-Inch Supply Outlets: Distributes heated air through compatible ducting.
- Direct Spark Ignition: Supports heater burner operation.
- 1 HP Blower Motor: Delivers the manufacturer’s published 4,000 CFM airflow.
- Single-Axle Trailer: Equipped with 15-inch wheels, safety chains, and a 3-inch pintle hitch.
- Integrated Power Outlet: One 15-amp GFI outlet for compatible auxiliary electrical equipment.
- Commercial Construction: Designed for demanding temporary heating installations.
Three Jobsite Functions in One Trailer
The Flagro FVO-400LTRC provides heating, power generation, and lighting from one trailer-mounted system.
This integrated design makes it useful for projects where temporary heating and support equipment must be deployed together.
1. Indirect-Fired Heating — 390,000 BTU/hr
The FVO-400LTRC includes a Flagro FVO-400RC indirect-fired heater.
Its burner heats air through a stainless steel heat exchanger, separating the combustion exhaust stream from the heated supply air during normal operation.
The heater delivers up to 390,000 BTU/hr of rated heating input with 4,000 CFM of airflow.
This design is useful for commercial applications requiring heated air without intentionally introducing combustion exhaust into the supply-air stream.
Combustion exhaust must still be discharged safely, and all heater installation, ventilation, and clearance requirements must be followed.
2. Integrated Generator — 8 kW
The FVO-400LTRC features an onboard diesel-powered generator.
Generator specifications include:
- 8 kW generator
- 120V single-phase output
- 1,800 RPM operating speed
- Instrument panel with hour meter
- One 15A GFI power outlet
The generator supports the trailer’s integrated equipment and provides a limited auxiliary electrical connection.
Actual power available for external loads depends on generator capacity and the power consumed by the heater, lighting, and other onboard components.
3. Integrated LED Light Tower — 15 Feet
The trailer includes a 15-foot two-stage light tower mast equipped with four LED fixtures.
This provides additional illumination for construction sites, temporary work areas, maintenance operations, and other commercial applications.
The integrated lighting system reduces the need for a separately transported light tower on suitable projects.
Common Applications for the Flagro FVO-400LTRC
Construction Site Heating
Construction projects often require temporary heat during winter conditions, building renovations, or HVAC installation.
The FVO-400LTRC provides high-capacity heating along with onboard generator power and lighting.
Potential uses include:
- Commercial construction projects
- Winter jobsite heating
- Temporary heating during building renovations
- Construction work areas
- Remote worksites
- Industrial maintenance projects
Its trailer-mounted design allows the system to be transported between suitable job locations.
Industrial Facilities and Warehouses
Warehouses, manufacturing facilities, and industrial buildings may require temporary heating during HVAC outages, equipment maintenance, or periods of seasonal demand.
The Flagro FVO-400LTRC can supply heated air to appropriately designed ducting systems.
Its air recirculation capability can be useful where a suitable return-air arrangement is part of the heating installation.
Temporary Structures and Commercial Tents
The indirect-fired heater can provide ducted heat to suitable temporary structures and commercial tent installations.
Because combustion gases remain separated from the supply-air stream during normal operation, indirect-fired heating is often preferred where direct-fired combustion products are undesirable.
Heater positioning, exhaust routing, fuel handling, ventilation, and occupant safety must still follow the manufacturer’s requirements and applicable codes.
Remote Jobsites
Remote construction and industrial projects may not have convenient access to utility electricity.
The integrated generator and light tower make the FVO-400LTRC useful for compatible projects requiring temporary heat and illumination.
Emergency and Planned HVAC Shutdowns
The trailer can also support commercial temporary heating during:
- HVAC equipment failures
- Planned maintenance shutdowns
- Building renovations
- Industrial projects
- Emergency heating deployments
- Temporary facility operations
Explore Commercial Climate Control Applications
Flagro FVO-400LTRC Technical Specifications
| Specification | Flagro FVO-400LTRC |
|---|---|
| Model | FVO-400LTRC |
| Equipment Type | Trailer-Mounted Indirect-Fired Heater |
| Heating Capacity | 390,000 BTU/hr |
| Airflow | 4,000 CFM |
| Heater | Flagro FVO-400RC with Air Recirculation |
| Fuel | No. 1 / No. 2 Fuel Oil or Diesel |
| Fuel Tank Capacity | 300 US Gallons |
| Fuel Tank Capacity — Metric | 1,135 Liters |
| Fuel Consumption | Varies by Configuration; Confirm with Manufacturer |
| Heat Exchanger | 16-Gauge 304 Stainless Steel |
| Burner Ignition | Direct Spark |
| Burner Fuel Pressure | 170 PSI at 0–2,000 ft |
| Fan Motor | 1 HP at 1,725 RPM |
| Supply Air Connections | Two 12″ Outlets |
| Return Air Connection | One 16″ Inlet |
| Generator Output | 8 kW |
| Generator Voltage | 120V / Single Phase |
| Generator Speed | 1,800 RPM |
| Generator Instrumentation | Hour Meter |
| Auxiliary Power Outlet | One 15A GFI Outlet |
| Generator Engine | Liquid-Cooled Diesel |
| Engine Starting | Electric Start with Glow Plugs |
| Light Tower Height | 15 Feet |
| Light Tower Mast | Two-Stage |
| Light Fixtures | Four LEDs |
| Trailer Configuration | Single Axle |
| Wheel Size | 15″ |
| Hitch | 3″ Pintle |
| Safety Chains | Included |
| Length | 157″ |
| Width | 90.5″ |
| Height | 111.5″ |
| Empty Weight | 3,620 lbs |
| Heater Listing | cETLus |
| Electrical Approvals | CSA/ESA Listed by Manufacturer |
| Trailer | DOT Approved by Manufacturer |
Specifications reflect Flagro’s published FVO-400LTRC product information. Engine manufacturer, burner nozzle configuration, and fuel consumption may differ by production revision. Confirm current specifications before ordering.
Indirect-Fired Heating and Stainless Steel Heat Exchanger
The FVO-400LTRC uses an indirect-fired heating system rather than releasing burner combustion products into the heated supply air.
The heater features a 16-gauge, 304 stainless steel heat exchanger, which separates the combustion stream from the air delivered through the heating system.
This design supports temporary commercial heating applications where combustion exhaust must be kept separate from the conditioned airflow.
The combustion exhaust must still be safely vented in accordance with manufacturer instructions and local requirements.
Heater Air Distribution and Ducting
The Flagro FVO-400LTRC is equipped with:
- Two 12-inch heated-air supply outlets
- One 16-inch return-air inlet
- 4,000 CFM blower capacity
These connections allow heated air to be distributed through compatible ducting to suitable temporary structures or commercial work areas.
Dual 12-Inch Supply Outlets
The standard dual supply arrangement allows heated air to be distributed through two separate 12-inch duct connections.
This can be useful when heating multiple work areas or directing airflow to separate locations.
16-Inch Return-Air Inlet
The 16-inch return-air connection supports the heater’s recirculating configuration.
Return-air arrangements must be designed to maintain appropriate airflow and combustion-system safety.
Flexible High-Temperature Ducting
Flagro offers high-temperature heater ducting for compatible indirect-fired models.
Duct length, diameter, configuration, and restrictions should follow the manufacturer’s approved requirements.
The FVO-400LTRC manual identifies a maximum of 150 feet of supply ducting.
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300-Gallon Onboard Fuel Tank
The FVO-400LTRC includes a large onboard fuel tank with approximately 300 US gallons of capacity.
The tank features:
- Heavy-duty fuel sight gauge
- 2-inch fuel inlet nozzle
- Integrated trailer mounting
- Shared fuel supply for the onboard system
The heater and diesel generator both consume fuel during operation.
Total runtime depends on heater firing, engine load, lighting use, available fuel, and the specific equipment configuration.
Contact Climate Control Solutions for current full-load fuel consumption and expected runtime information.
Trailer and Transportation Features
The Flagro FVO-400LTRC is built on a single-axle trailer designed for transporting the integrated heating, generator, and light tower equipment.
The manufacturer lists:
- Single-axle trailer
- 15-inch rims and tires
- Safety chains
- 3-inch pintle hitch
- DOT-approved trailer configuration
- Approximately 3,620 lbs empty weight
The manufacturer also publishes overall dimensions of 157 inches long, 90.5 inches wide, and 111.5 inches high.
Verify loaded towing weight, trailer brakes, hitch capacity, and any applicable permit requirements before transportation.
The light tower mast, doors, equipment connections, and ducting must be properly secured for travel.
Operating and Safety Considerations
The FVO-400LTRC is commercial construction-heating equipment and should be operated according to Flagro’s instructions.
Important considerations include:
- Position the trailer on a stable, suitable surface.
- Maintain required clearances from combustible materials.
- Safely route combustion exhaust away from occupied areas and air intakes.
- Provide appropriate combustion air and ventilation.
- Use approved fuel and inspect fuel lines regularly.
- Follow electrical and generator safety requirements.
- Confirm proper ducting connections and airflow.
- Follow all towing and trailer inspection instructions.
- Have qualified personnel perform burner setup and combustion testing.
Never operate the heater in an installation that conflicts with the manufacturer’s safety requirements.
Why Choose the Flagro FVO-400LTRC?
The Flagro FVO-400LTRC provides a complete temporary heating package for commercial and industrial applications.
By combining a 390,000 BTU indirect-fired heater, 8 kW diesel generator, 15-foot LED light tower, and 300-gallon fuel tank, it offers more capability than a conventional portable heater.
Its trailer-mounted design makes it useful for contractors and facilities requiring integrated heat, lighting, and generator power at compatible jobsites.
Compare Other Flagro Indirect-Fired Heaters
Climate Control Solutions offers additional heating solutions for different applications:
- Flagro FVO-400RC: 390,000 BTU indirect-fired portable heater with recirculation, without the integrated trailer-mounted generator and light tower.
- Flagro FVO-400RC60: 390,000 BTU indirect-fired heater with 60-gallon fuel tank.
- Explore Commercial Heating Applications
Frequently Asked Questions About the Flagro FVO-400LTRC
How much heat does the FVO-400LTRC produce?
The heater is rated for 390,000 BTU/hr of heating input.
What does the 3-in-1 trailer include?
The trailer combines an indirect-fired heater, an 8 kW generator, and a 15-foot LED light tower.
What fuel does the FVO-400LTRC use?
The manufacturer lists No. 1 and No. 2 fuel oil and diesel for the heater. Use only approved fuel for the actual supplied configuration.
How large is the fuel tank?
The trailer includes a 300 US gallon fuel tank, approximately 1,135 liters.
How long can the FVO-400LTRC operate on a full tank?
Runtime depends on the combined fuel consumption of the heater and diesel generator.
Flagro’s published product page and operating manual contain differing full-load fuel figures, so confirm expected runtime for the equipment configuration being purchased.
Does the trailer include a generator?
Yes. It includes an 8 kW generator rated for 120V single-phase output.
Does the trailer include lighting?
Yes. The integrated light tower features a 15-foot two-stage mast and four LED fixtures.
What ducting connections are provided?
The unit includes two 12-inch heated-air supply outlets and a 16-inch return-air inlet.
Can it heat a commercial tent or temporary building?
It can support appropriately designed temporary heating applications when installation, ventilation, combustion exhaust, and safety requirements are met.
How much airflow does it provide?
The heater provides 4,000 CFM of airflow.
How much does the trailer weigh?
The manufacturer’s published empty weight is 3,620 lbs. The loaded towing weight will be higher.
What is the difference between the FVO-400LTRC and FVO-400RC?
The FVO-400RC is a portable indirect-fired heater. The FVO-400LTRC incorporates an FVO-400RC-style heater into a self-contained trailer with a large fuel tank, generator, and light tower.
Request a Quote for the Flagro FVO-400LTRC
Climate Control Solutions supplies Flagro indirect-fired heaters, commercial heating equipment, and portable climate control systems nationwide.
Whether you need one FVO-400LTRC for a construction project or multiple heating trailers for an industrial application, our team can assist with equipment selection, ducting, transportation requirements, and freight coordination.
Contact Climate Control Solutions for current pricing, availability, and project-specific quotes.
Phone: (800) 633-8711
Email: [email protected]
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