ZEHNDER Terraline duct radiator with natural convection UN-11-21/1600mm, heating capacity: 549W, grille to be ordered separately UN 11-21/ 1600/ ALUM.NAT

Channel Heater – Discreet Comfort and Efficient Heating

Zehnder Terraline is a natural convection channel heater that performs perfectly in modern interiors, especially where aesthetics and minimalism matter. Its design allows for nearly complete concealment of the heating system, leaving visible only the elegant frame and selected grille. This solution integrates seamlessly with large glazing, creating an invisible air curtain that prevents cold air from sinking.

The heater consists of a durable steel casing coated with powder paint and a high-efficiency heat exchanger made of aluminum-copper combination. This material pairing ensures efficient heat transfer and long-term reliability. The UN-11-21/1600mm model, with a power output of 549W, is designed for floor mounting, saving space and enabling a discreet heating system. Note: the decorative grille is not included in the set and must be ordered separately.

Construction and Application

Terraline heaters utilize natural convection to distribute heat—warm air rises, heating the room from bottom to top. This makes them ideal for spaces with high ceilings or large glass surfaces. This solution enables the creation of a comfortable microclimate even under challenging conditions.

The Terraline heater features a short warm-up time and silent operation, translating into high user comfort. The ability to connect multiple heaters into a single circuit allows for precise adjustment of heating capacity to suit individual needs and room size. Additionally, the heater is compatible with various control systems, enabling precise temperature regulation and optimal energy consumption.

Key Features and Benefits

• Discreet Design: Hidden heating system ensures an aesthetic interior appearance.
• High Efficiency: Aluminum-copper heat exchanger guarantees effective heat transfer.
• Wide Application: Ideal for spaces with large glazing, high ceilings, and in both public and private buildings.
• User Comfort: Short warm-up time and silent operation ensure superior thermal comfort.
• Flexible Installation: Ability to link multiple heaters into one circuit and customize output to specific requirements.
• Durability: Constructed from high-quality materials (steel casing, aluminum-copper heat exchanger) ensuring long-term reliability.
• Safety: Maximum operating pressure of 10 bar and operating temperature of 110°C ensure safe operation.
• Customization: Wide selection of decorative grilles (rolled aluminum or linear) allows matching the heater’s appearance to interior design (grilles available for separate order).

The Zehnder Terraline heater is an investment in thermal comfort and aesthetic appeal for your interior. Its versatility ensures optimal performance in both modern single-family homes and commercial spaces requiring a discreet, efficient heating solution.