Category: Heaters


Indirect Fired Oil Heater

Flagro Indirect Fired Heaters - 400 Series

Indirect Fired Heaters - 400 Series


Even more heat when and where you need it

The 400 series is just as reliable as the 200, with even greater heating capacity at up to 390,000 btuh. The 42 gallon tank on the FV0-400 can run for up to 14 hours, burning just 2.75 gallons per hour. FVO-400 weighs in at 450 lb and has two 16" pneumatic wheels. The FVN-400 (natural gas) and the FVP-400 (propane) weigh 365 lb and require external fuel tanks. All three models measure 70" long x 29" wide x 52" high. They come with two 12" air outlets and an optional third 16" outlet.
  • Indirect fired heat exchanger allows external exhaust of combustion products
  • Standard steel lifting harness
  • Heavy-duty pneumatic tubed tires
  • slim design for easy site mobility and transportation
  • Built-in 42 gallon fuel tank



FVO-400 Operating Instructions Manual

FVO-400 Parts List

F-10 Oil Fired Burner Parts Diagram

FV-400 Series Wiring Schematic (2011)

FV Series Wiring Diagram

Part # FVO-400

Type Indirect Fired Heaters
Heat Capacity Up to 390,000 BTU/H
LP/NG Hose Assembly
Fuel Capacity / Run Time 42 US GAL/ 14 HRS
Fuel Type Oil
Power Requirements 115 V/15 A (10.5 A Draw)
Fan Motor / Air Circulation 3/4 H.P. / 2,500 CFM
Fan Control N/A
Heat Exchanger 16 Ga 304 Stainless Steel
Ignition Direct Spark
Nozzle Size / Pump Pressure 2.00 x 60B/ 170 PSI
Standard Air Outlet 2 x 12" Dia
Optional Air Outlet 1 x 16" Dia
Air Inlet N/A
Wheels 2 x 16" High Density Flat Free
Wheels Kit
Dimensions / Weight 70" x 29" x 52" / 450 LBS.
Approvals cETLus
Standard Outlet Ducting FV-HD12 (12" x 12')
Optional Outlet Ducting FV-HDG16 (16" x 25')
Return/Intake Ducting N/A
Thermostat Control
Remote Thermostat FV-THB
Option N/A
Vented Regulator
Ventless Regulator
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