Reznor® NEW model RV Venturion™ series used-oil-fired unit heaters are available in two sizes with BTUH inputs; 225,000 and 325,000.
These used-oil-fired heaters are designed to burn used oil but will also burn no. 2 fuel oils without adjustment. The used oil must be no heavier than 50 weight and not lighter than no. 2 fuel oil.
The heater is shipped from the factory as illustrated, with the warm air discharge on the front. To adapt the heater to a building, the discharge opening may be moved to the rear or divided between front and rear.