Duct Electric Heater

Release date: 2025-11-08 09:49:40 Reading volume: 3111 Author: Keruite

Model Name

FD-G Metal Fin Tube Electric Heater

It is an electric heating component used for heating air.

Non-explosion-proof sites with poor air conditions.

As a low-temperature duct electric heater, the temperature of air after heating does not exceed 160°C;
Used as a heating component for duct systems, fresh air handling units, and electric heating equipment to heat air;
The shell adopts a single-plate structure without thermal insulation treatment and requires an externally matched control cabinet for use;
Essential functions of the control cabinet: air-heat interlock, electric heater over-temperature protection, and grounding protection;
The shell is made of carbon steel plate with electrostatic spraying. For corrosion resistance requirements or high-temperature environments, stainless steel can be used;
The duct electric heater needs to be independently suspended and fixed, with front and rear flanges connected to the duct;
The 0.8m duct sections before and after connection to the electric heater shall be made of insulating and non-combustible thermal insulation materials;
During the installation of the duct electric heater, the used components shall be insulated to prevent accidental electric leakage;
If the duct electric heater is installed in the suspended ceiling, an effective maintenance opening must be reserved in the suspended ceiling;
It is divided into two series: PTC thermosensitive ceramic series and metal fin tube series. Neither series can be used for dry heating (operation without air flow).

Composed of stainless steel fin tubes, modified magnesium oxide powder, electric heating alloy wires, and a shell;
The surface of the electric heater is non-charged, making it suitable for use in non-explosion-proof sites with poor air conditions;
The fin tube heater has large thermal inertia and slow cooling, requiring an extended fan delay shutdown time;
For the same electric heating power, the cross-sectional size of the fin tube heater is larger than that of the PTC heater;
The fin tubes are available in two stainless steel materials: 201 and 304. The latter (304) is selected for gas-corrosive environments;
Available in two types: flange-type straight tubes and flange-type U-tubes. The former (straight tubes) is selected for environments with high air velocity and air pressure.