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Installation Specifications
When installing this duct heater, NEC 424, Part IV, Duct Heaters, applies.
When installed in an "inline" duct or round pipe adapter for a general distribution boost heater or make-up air application, observe
the following guidelines:
1. This product must be installed in a metal duct, size of element rack.
2. There shall be no insulation on the inside of this sheet metal duct section.
3. Any flex-pipe or other insulated pipe must be at least 24" from the electric element.
4. Mounting - there must be at least 2" air clearance around all sides of this sheet metal duct section.
5. If there is a need to insulate this duct section for moisture condensation or in an unheated compartment, it is permissible to
wrap insulation around the exterior of this metal duct section.
6. The control box must be positioned so it will not receive dripping water or collection of moisture.
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