Tubular/Finned Tubular Duct Heaters

Heatrex High Temperature Tubular Duct Heaters are designed for installations requiring higher air temperature to accomplish drying, baking, preheating, annealing, dehumidification and similar applications. Construction Rugged incoloy sheathed tubular elements Steel mounting flange Individually replaceable elements Heavy-duty support rods Prewired 48 amp maximum circuits NEMA 1 terminal housing Up to 600 volts

Optional Features

• Special dimensions and sheath materials
• Special wattage/voltages
• Thermowell or Thermocouple available for over temperature protection
• Custom terminations
• NEMA 4, 7 and 12 terminal housings available
• Gas-tight flange construction
• Built-in controls/custom control panels
• Air flow switch
• Fan interlock relay
• Adjustable bulb and capillary manual reset
• All stainless steel construction
• Insulation Box

Benefits

• Versatile - May be adapted to allow application at locations where air heating is most efficiently accomplished
• Easy installation
• Low maintenance
• Engineered for long life
• Provides clean heat

Finned Tubular Duct Heaters

Heatrex Finned Tubular Duct Heaters are engineered for lower temperature industrial process heating and recirculating ovens at temperatures of 600° and below. Typical uses include comfort heating, shrink wrapping, drying rooms, low temperature process air, fruit and produce ripening rooms, low temperature forced air ovens, cryogenic exhaust gas heating and other air heating applications.

Construction

• .430 Diameter
• Copper clad steel tubular elements
• Edgewound furnace brazed fins
• Individually removable elements
• Prewired 48 amp maximum circuits

Optional Features

• Over-temperature protection
• Other ratings/sizes are available
• Explosion/moisture resistant terminal housing
• Hermetically sealed terminals for severely humid environments
• Solid state control panels/controls
• All stainless steel construction
• Insulation Box

Benefits

• Versatile - May be adapted to allow application at locations where air heating is most efficiently accomplished
• Easy installation
• Low maintenance
• Engineered for long life
• Provides uniform air temperatures

Duct Heater Controls

Heatrex Tubular and Finned Tubular Duct Heaters provide the user with an extremely efficient heat source which is readily adaptable to the control requirements which suit his process. When combined with properly selected controls, these heaters function with accuracy and economy of operation

The selection of controls or a control system for a specific application or process should be based on the careful consideration of a number of factors including:

• Heater selection of proper size and type
• Acceptable range of temperature above and below desired set point
• Medium used for heat transfer
• Fluctuations of temperature due to variables in the process
• Over temperature protection requirements
• Operator requirements such as readability, control monitoring, etc

Heatrex application engineering personnel are available
to assist in the evaluation of your control requirements.

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