What should I pay attention to when using duct heaters?

Electric duct heaters are primarily used for industrial duct heating, room heating, large factory workshop heating, drying rooms, and air circulation heating in passageways to maintain air temperature and achieve effective heating. Duct heaters feature a frame-wall structure with built-in over-temperature protection. For heating temperatures exceeding 120°C, an insulation or heat dissipation zone should be provided between the junction box and the heater, and finned heat dissipation structures should be installed on the surface of the heater element.

Medium-temperature duct heaters do not require insulation or heat dissipation zones; the surface of the heater element should dissipate heat naturally. The electrical control must be linked to the fan. A linkage should be installed between the fan and heater to ensure the heater starts after the fan is activated. After the heater stops, the fan must be delayed for at least two minutes to prevent overheating and damage.

Duct heaters are used in many industries, and their heating capacity is undeniable. However, there are some precautions during operation.

1. Duct heaters must be installed in a well-ventilated area and not in enclosed, unventilated environments. They should also be kept away from flammable or explosive materials.

2. Install the heater in a cool, dry location. Avoid installation in damp or wet areas to prevent electrical leakage.

3. When the duct heater is operating, the air outlet duct and the heating tube inside the heater become very hot. Avoid touching them directly to avoid burns.

4. When using a duct heater, check all power and wiring connections in advance and take safety precautions.

5. In the event of a sudden malfunction of the duct heater, shut it down immediately and resume operation only after the malfunction has been corrected.