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Fuel Oil Heaters


                             Frequently Asked Questions

Fuel Oil HeatersWarren Electric Corporation manufactures electric fuel oil heaters. These fuel oil heaters are used to heat fuel oil to a desired temperature before combusted in the furnace.

Maintaining oil temperature is necessary to ensure that complete combustion occurs under optimal conditions, thereby reducing pollutants and increasing efficiency.

WEC electric oil preheaters can be provided in a flange or screw plug design. Thermostats are provided with or without interlocks. Interlocks are used to prevent the oil pump from pumping cold, thick oil into the furnace until the oil has been preheated to the required temperature.

The heaters are designed with watt densities which vary in regards to velocity of the oil. Heavy oil (#5 or #6 Bunker C) should operate at a watt density of 8 to 12 watts per square inch, Medium oil (3 or #4) at a watt density of 15-18 watts per square inch and Light oil (#1 or #2) at a watt density of 20-24 watts per square inch.

The most common element sheath for a fuel oil heater is steel with direct immersion into the fuel oil.

OH-2 Catalog

Request OH-2 CatalogWith over 400 UL listed models to choose from, this is industry's most comprehensive catalog for fuel oil heating. Request the OH-2 catalog on the WEC literature page.