Flagro FVO-750 Indirect Fired Oil Heater 750000 Btu/h

Product Description

The FLAGRO FVO-750 is a 750,000 BTU/h indirect fired oil heater built for large-scale temporary heating on industrial and commercial jobsites. It routes combustion gases through a 16-gauge 304 stainless steel heat exchanger, keeping the heated airstream fully free of combustion byproducts. A 7.5 HP blower delivers 7,000 CFM and is governed by a Variable Frequency Drive (VFD) for soft-start operation. Power input is 208-230 volts in either single-phase (18-amp draw) or three-phase (14-amp draw). The unit is skid-mounted with forklift pockets for safe repositioning across active jobsites. Licensed HVAC technicians and mechanical contractors are the primary installers.

The FVO-750 is suited for large construction enclosures, warehouses, hangars, and event structures where indirect fired, duct-distributed heat is required. The high-static blower supports outlet ducting runs up to 200 feet, enabling heat distribution across extended floor areas. Dual 16-inch diameter air outlets and dual 16-inch diameter air inlets accept standard ducting. The return air inlet also supports recirculation of warm inside air for improved efficiency in enclosed spaces. The unit delivers a 130 degrees F temperature rise at 7,000 CFM under free-flow conditions.

Key Features

• 750,000 BTU/h indirect fired output with fully separated combustion gases and supply airstream
• 16-gauge 304 stainless steel heat exchanger for corrosion resistance and long service life
• 7.5 HP VFD-controlled blower rated at 7,000 CFM with soft-start capability
• High-static blower supports outlet duct runs up to 200 feet
• Dual 16-inch air outlet and inlet ports for flexible ducting configurations
• Skid-mounted base with forklift pockets for efficient repositioning on active sites
• 208-230V operation in single-phase or three-phase configurations

Compatibility

The FVO-750 accepts standard 16-inch flexible or rigid duct accessories including Flagro outlet ducting FV-HDG16 (16 inches x 25) and inlet ducting FV-HDV16 (16 inches x 25). Designed for use as a standalone industrial temporary heating unit in applications requiring indirect fired oil heat with ducted air distribution.

Installation Notes

Installation and commissioning must be performed by a qualified HVAC technician or licensed mechanical contractor familiar with temporary heating equipment and applicable local codes. De-energize the power supply completely and shut off the fuel supply before performing any service or duct connections. Maintain all clearances specified in the operating manual and verify that ducting connections are secure and rated for the airflow volumes involved. Fuel system connections must comply with applicable codes for oil-fired equipment.

Technical Specifications

• Heating Capacity: 750,000 BTU/h
• Fuel Type: Oil
• Fuel Consumption: 5.4 gallons per hour
• Fuel Tank Capacity: 42 US gallons
• Airflow: 7,000 CFM (free flow)
• Temperature Rise: 130 degrees F at 7,000 CFM
• Blower Motor: 7.5 HP
• Fan Control: VFD (Variable Frequency Drive)
• Ignition: Direct spark
• Power Requirements: 208-230V, 1-phase (18-amp draw) or 3-phase (14-amp draw)
• Heat Exchanger Material: 16-gauge 304 stainless steel
• Air Outlet: 2 x 16 inches diameter
• Air Inlet: 2 x 16 inches diameter
• Mounting: Skid base with forklift pockets
• Compatible Outlet Ducting: FV-HDG16, 16 inches x 25
• Compatible Inlet Ducting: FV-HDV16, 16 inches x 25
• Weight: 1390 pounds

Standard Information

• Brand: FLAGRO
• Manufacturer Part Number: FVO-750