Infrared Heating Gas infrared heaters are a good choice for buildings with high ceilings, large volumes of air, and high air leakage rates. They can be used in areas where people are working or sitting with substantial air movement, such as a loading dock or a grandstand. No walls are needed for effective zoning. Infrared heaters heat primarily by radiant heat transfer, similar to the way direct sunlight heats your body. Radiant (infrared) energy travels in straight lines and is absorbed by objects that are opaque. It passes through objects and materials that are transparent, such as air.

Uses

Commercial uses for natural gas infrared heaters: Factories and warehouses Distribution centers and loading docks Repair garages and aircraft hangers Transportation terminals Parking garages Green houses

Types of Infrared Heaters

There are two types of gas infrared heaters: High intensity units are square or rectangular in shape and require adequate dilution air because they are unvented. The gas flame heats a ceramic or stainless steel mat, which radiates to the space to be heated. Output can range from 20,000 to 200,000 Btuh. Low intensity units are tubular in shape, usually a straight or U-shaped tube. The tube is actually part of the vent system. A parabolic reflector is attached just a few inches above this horizontal part of the vent system to direct the infrared radiation downward. Because these tubular units are vented to the outside, they do not require dilution air. The output from a tubular unit can be as high as 100,000 Btuh.

Installation Tips

When locating and installing gas infrared heaters: Be aware of sprinkler system outlets and clearances between the heaters and stored items. Use with caution where the air is filled with dust or paint overspray. Know that if the air contains chlorine or chlorinated compounds, the heater's life span will be shortened.

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