Flagro FVO-1100TR Indirect Fired Trailer Heater 780000 Btu/h

Product Description

The FLAGRO FVO-1100TR is a self-contained, trailer-mounted indirect fired heater unit built for large-scale temporary heating on construction sites, remote jobsites, and industrial work areas. The unit houses two FVO-400RC indirect fired oil-burning heaters, each rated at 390,000 BTU/h, delivering a combined output of 780,000 BTU/h. Airflow of up to 4,000 CFM is distributed through either four 12-inch diameter or two 16-inch diameter duct outlets. Licensed HVAC contractors and certified heating technicians typically deploy this unit on projects requiring clean, indirect heat delivery to occupied or enclosed spaces.

The FVO-1100TR is suited for large residential and commercial construction projects, civil infrastructure work, industrial shutdowns, and remote operations where a permanent heat source is unavailable. The integrated onboard generator allows operation where no grid power is accessible. The 299-gallon steel fuel tank with TC-approved capacity supports extended run times without refueling, making the unit practical for continuous overnight heating shifts or multi-day remote deployments. The recirculating air inlet configuration allows the unit to draw and recondition air from within a heated space, improving thermal efficiency in enclosed structures.

Key Features

• Dual FVO-400RC indirect fired oil heaters with combined 780,000 BTU/h output
• Welded 304 stainless steel heat exchanger for corrosion resistance and durability
• Riello burner technology with Tiger-Loop fuel system for reliable combustion
• 299-gallon onboard steel fuel tank with 110 percent full fuel containment
• Integrated generator enables self-contained operation at remote sites without grid power
• Backward incline blower delivers up to 4,000 CFM with low noise and low amperage draw
• Dual-axle trailer frame with four 15-inch galvanized rims and radial tires for site mobility

Compatibility

Designed as a self-contained trailer unit incorporating two FVO-400RC indirect fired heaters. Outlet ducting is compatible with FV-HD12 (12-inch) duct components. Verify duct sizing and fuel supply connections against site-specific requirements before deployment.

Installation Notes

Deployment and commissioning should be performed by qualified HVAC or heating contractors familiar with indirect fired oil-burning equipment and applicable codes. Before servicing either heater unit, shut down the burners, allow heat exchangers to cool, and de-energize the onboard generator. Fuel system connections and containment integrity should be inspected prior to each use in accordance with local fire code and the applicable installation standard. Do not operate in fully sealed, unventilated spaces; indirect fired units exhaust combustion gases externally, but adequate fresh-air makeup must still be confirmed for the heated space.

Technical Specifications

• Heating Capacity: 2 x 390,000 BTU/h (780,000 BTU/h combined)
• Maximum Airflow: 4,000 CFM
• Air Outlet: 4 x 12-inch diameter or 2 x 16-inch diameter
• Air Inlet: 2 x 16-inch diameter (recirculating)
• Fuel Tank Capacity: 299 US gallons (TC approved)
• Fuel Containment: 110 percent full fuel containment
• Heat Exchanger Material: Welded 304 stainless steel
• Burner Technology: Riello burner with Tiger-Loop fuel system
• Power Supply: 115 volts (integrated generator included)
• Dimensions: 192 x 88.8 x 84 inches
• Weight: 4300 pounds
• Trailer Configuration: Dual axle, 4 x 15-inch galvanized rims with radial tires

Standard Information

• Brand: FLAGRO
• Manufacturer Part Number: FVO-1100TR