Flagro FVO-400RCBT Indirect Fired Oil Heater 390000 Btu/h

Product Description

The FLAGRO FVO-400RCBT is a 390,000 BTU/h indirect fired oil heater built for large-scale temporary heating applications. It uses a Riello burner with an integrated nozzle pre-heater for reliable cold-weather startup, paired with a low-temperature fuel pump. The unit delivers up to 4,000 CFM of heated airflow through a recirculating hood design, which draws warm air from the conditioned space back through the unit for improved efficiency. It runs on No. 2 fuel oil and draws from an onboard 118 US gallon bulk tank. Licensed HVAC technicians and industrial heating contractors are the typical installers and service personnel for this class of equipment.

The FVO-400RCBT is designed for construction sites, industrial facilities, warehouses, aircraft hangars, and other large temporary or semi-permanent enclosures where indirect fired heat is required to keep combustion products outside the conditioned space. The recirculating hood recovers heat from the space, reducing fuel consumption compared to straight-discharge configurations. The input range is adjustable from 325,000 to 390,000 BTU/h, giving operators flexibility for varying job conditions. Ducting options include dual 12-inch diameter air outlets or a single 16-inch diameter outlet.

Key Features

• 390,000 BTU/h maximum heat output with adjustable input range down to 325,000 BTU/h
• Riello burner with nozzle pre-heater enables reliable startup in cold weather conditions
• Recirculating hood design recovers space heat and recirculates it through the unit for improved efficiency
• 118 US gallon onboard bulk tank provides approximately 43 hours of run time at rated consumption
• Dual 12-inch or single 16-inch air outlet configurations supported for flexible ducting layouts
• UL 733 certified for use in Canada and the United States

Compatibility

Compatible ducting accessories include FV-HD12 (12-inch x 12), FV-HD12x25 (12-inch x 25), and FV-HDG16 (16-inch x 25) for outlet ducting, and FV-HDV16 (16-inch x 1) for return ducting. Designed as an indirect fired oil heater for large temporary heating applications requiring clean, combustion-free air delivery to the conditioned space.

Installation Notes

Installation and service should be performed by a qualified HVAC technician or industrial heating contractor familiar with oil-fired indirect heaters and applicable codes. Shut off all electrical power and allow the unit to cool completely before performing any service or duct connections. Ensure all ducting is secured and return air paths are unobstructed before firing the unit. Follow local building and fire codes, including applicable sections of NFPA 31 where relevant, for temporary heating equipment placement and ventilation requirements.

Technical Specifications

• Heat Capacity: 390,000 BTU/h (input range 325,000 to 390,000 BTU/h)
• Fuel Type: No. 2 fuel oil
• Airflow: 4,000 CFM
• Power Requirement: 115 volts / 15 amps
• Fuel Tank Capacity: 118 US gallons
• Fuel Consumption: 2.75 GPH
• Operating Time: Approximately 43 hours at rated consumption
• Air Outlet: 2 x 12 inches diameter or 1 x 16 inches diameter
• Air Inlet: 1 x 16 inches diameter
• Dimensions: 70 x 29 x 52 inches
• Weight: 850 pounds
• Burner: Riello with nozzle pre-heater and low-temperature fuel pump
• Certification: UL 733, Canada and U.S.A.

Standard Information

• Brand: FLAGRO
• Manufacturer Part Number: FVO-400RCBT