DUCT HEATERS air heaters OVERVIEW WATTCO™ duct heaters are composed of open coil, tubular or finned tubular heating elements that are either flanged or inserted in the duct. WATTCO™ supplies two types of duct heaters: air duct heaters and process heaters. Air duct heaters are primarily used in air flowing ventilation systems and comfort heating applications while process duct heaters are mainly used for industrial process heating applications (ovens that require re-circulated air or forced circulation). WATTCO™ designs and configures your electric duct heaters ccording to your specifications....

DUCT HEATERS air heaters SELECTING YOUR WATTCO™ AIR DUCT HEATER FIG. 2 - INCOLOY® UNFINNED TUBULAR ELEMENT A broad range of custom built electric duct heaters with capacities up to 1000kW is available upon request. WATTCO™ heaters can be used for applications with the following voltages: WATTCO™ duct heaters have the international, American recognized, Canadian Standards Association (CSAus) label, which set the standards for the electric heating industry. Duct heater can include proper built-in safety devices to extend the service life of the heater. KILOWATTS Refer to Figure 3 to choose the...

DUCT HEATERS air heaters CONSTRUCTION The two available basic heater frame constructions (Figures 4 and 5) are: »» Insert type »» Flange type Notes: Frames will be constructed with adequate thickness galvanized steel in order to provide sturdiness of the heater. The mounting flanges for insertion provide an easy and safe fastening to the duct and do not require the main electrical control panel to be opened. Heating elements are made of open nickel chrome. High temperature resistant and first grade ceramics support coils horizontally. Coils are machine-crimped onto galvanized terminal and secured...

DUCT HEATERS air heaters ALTERNATIVE AUXILIARY DUCT HEATER CONTROLS The following controls are supplied by WATTCO™ on the duct heater or are available as an EEMAC rated control panel for wall mount: Install the heaters in a horizontal duct with the terminal housing at the side or bottom. Use tandem mounting (several heaters in series) when possible. Note: Units in Table 2 are only examples. For safety reasons, refer to this table as a guideline for custom design orders. Custom designed units will be built according to the requirements of your specific application. Note: QFE and QIE Incoloy® tubular...

DUCT HEATERS air heaters OVERVIEW WATTCO™ process duct heaters are installed in forced air ducts and used for industrial processes (forced air dryers, core drying, annealing) that require medium to high air temperature (at least 750°F/400°C). Process duct heaters come with the same standard and optional features as air duct heaters. Please call us at 1-800-4WATTCO (1-800-492-8826) for further assistance in selecting the best WATTCO™ process duct heater for your application. AMT TABLE 3 Process Duct Heaters WHEN ORDERING, PLEASE SPECIFY: Quantity, catalogue number, tension, wattage, shop drawings,...