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Primary Features of Infrared Radiant Heat Tube Heaters for Industrial and/or Commercial Applications

Founded in 1958, Space-Ray has over 40 years of field experience and exposure to industrial heating problems. Space-Ray was the first U. S. manufacturer to design and market unitized tube heaters in 1968 and is proud to state that some early heaters installed are still providing trouble-free operation. The major features of Space-Ray products are as follows:

FEATURES

1. Operating Principle - Space-Ray operates on a pull-through (vacuum) system. The products of combustion are pulled through the combustion chamber. The advantages include:

• Safety - The system is under negative pressure at all times to preclude the escape of combustion gases inside the building.
• Uniform Operating Temperature - The pull-through system generates a long, stretched flame (approximately 8-10 feet) which results in a more uniform tube temperature and improved comfort on the ground level.
  
• Higher Radiant Efficiency - Based on operating characteristics, the pull-through system results in higher radiant efficiency.

2. Emitter Tube Material - The calorized-aluminized steel emitter tubes have excellent corrosion resistance and a high surface emissivity of 0.83-0.86. The emitter tubes can be subjected to higher operating temperatures and have an average life expectancy of 22 years.

• Tube Temperature - Higher emitter tube operating temperatures emit infrared energy at wavelengths that are readily absorbed by concrete. Infrared energy is stored in the floor slab (thus creating the thermal mass), which helps to satisfy the required indoor temperature setting more quickly and results in a quicker recovery period when the doors are frequently opened.
• No Peeling or Flaking - Calorized-aluminized emitter tubes will not peel, flake, or corrode like other competitive emitter tube materials and are highly recommended in harsh operating environments (i.e., car washes, greenhouses, or swimming pools) where the tubes are subjected to high humidity and/or chlorine.

3. Reflector Design - Space-Ray’s unitized U-tube heaters use a reflector design that totally covers the emitter tubes and maximizes radiant energy transfer between the firing and exhaust tubes, providing a more uniform radiant energy distribution to the floor.

• Minimum Convection Losses - The reflector ends are totally enclosed to maximize the emitter tube temperatures and radiant output and minimize the convection losses that reduce the amount of radiant energy received on the floor level.
• No Exposed U-Bend - Unlike straight tubes that have been configured into a U-tube design with a 180 º U-bend, the Space-Ray U-tube reflector design totally covers the emitter tubes to maximize the radiant output to the floor level. Therefore, tube temperatures are not reduced due to an exposed U-bend.

4. Venting - Each CSA design certified unit is equipped with an individual draft inducer for maximum venting flexibility. Heaters can be individually or common vented.

• Heavy Duty - The draft inducer is equipped with a permanently lubricated, totally enclosed, fan cooled, heavy-duty ball bearing motor for maintenance-free operation.
• Flexibility - The system is design certified for up to 75 feet for sidewall venting and 50 feet for outside combustion air inlet ducting.

5. Burner and Control Systems - Space-Ray utilizes the highest quality materials and components that are designed to our specifications.

• Heavy Duty - The one-piece, heavy-duty cast iron burner material ensures precision-crafted performance and optimum combustion characteristics for the life of the heater.
• Simple - No burner or field adjustments are required. All controls are pre-set at the factory to ensure optimum operating characteristics. All controls are test fired and checked by our Quality Control Department prior to shipment.
• Reliable - Space-Ray heaters are equipped with reliable controls:
  A Honeywell direct spark ignition system with a 100% gas shut-off safety control.
  A Honeywell redundant combination gas valve that provides the double assurance of a complete main gas valve shut-off and straight-line servo pressure regulator that effectively maintains constant gas output pressure under varying supply pressures.
  A diaphragm air proving switch for proof of venting before gas flow and ignition.
  

6. Monitoring Lights - Space-Ray features an on-line diagnostic monitoring light system.

• Convenience - The three on-line diagnostic monitoring lights assist maintenance personnel with floor level diagnosis in the event of heater malfunction. Heaters are usually installed 16-18 feet above the floor, or sometimes 65 feet above the floor in high aircraft hangars and in indoor football practice facilities, where they are not easily accessible from the ground.