Category: Heaters

FVO-400BT (Big Tank)

Indirect Fired Oil Heater

Flagro FVO-400 Big Tank

Indirect Fired Heaters - 400 Big Tank


  • 170F – 180F outlet temperature rise
  • Includes proven Riello Burner Technology
  • Optional remote thermostat available
  • ETL approved for use in the US and Canada
Model FVO-400 Oil
Heat Capacity 390,000 btuh
Fuel Tank Capacity 118 US gallons
Operating Time/
Fuel Consumption
50 hours
2.75 gal/hr
L x W x H 70" x 31" x 68"
Heat Exchanger 16 gauge
304 Stainless Steel
Fan Motor 3/4 HP@1,700 rpm
2,500 CFM
Ignition Direct Spark Ignition Pre heater option
Nozzle Size/
Gas Pressure
2.0 x60B at 170 PSI
Air Outlet
Two 12" diameter
One 16" diameter
Power Requirements 115V/60Hz/1Ph/15Amp
Approvals cETLus
Weight 950 lb
Filter System Tiger Loop Fuel Draw and Priming System

Part # FVO-400BT

Type Indirect Fired Heaters
Heat Capacity
LP/NG Hose Assembly
Fuel Capacity / Run Time
Fuel Type Oil
Power Requirements 1 Phase 208-230V (18 AMP Draw)
Fan Motor / Air Circulation
Fan Control N/A
Heat Exchanger 16 Ga 304 Stainless Steel
Ignition Direct Spark
Nozzle Size / Pump Pressure
Standard Air Outlet 1 x 12" Dia
Optional Air Outlet 1 x 12" Dia
Air Inlet 1 x 12" Dia
Wheels Kit
Dimensions / Weight
Approvals cETLus
Standard Outlet Ducting FV-HD12 (12" x 12')
Optional Outlet Ducting FV-HD12 (12" x 12')
Return/Intake Ducting FV-HD12 (12" x 12')
Thermostat Control
Remote Thermostat FV-THB
Option FVO-TLS Tigerloop System
Vented Regulator
Ventless Regulator
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