ZEHNDER Terraline duct heater with natural convection UN-11-34/1200mm, heating capacity: 567W, cover plate to be ordered separately UN 11-34/ 1200/ ALUM.NAT

Channel Heaters – Discreet Thermal Comfort

Zehnder Terraline is a range of channel heaters utilizing natural convection, designed to seamlessly integrate into interior décor. Their construction enables the creation of an almost invisible heating system, ideal especially for spaces with large glazing areas, where they can function as an air curtain. These heaters consist of a durable steel housing and a highly efficient heat exchanger made from a copper-aluminum combination.

The Terraline UN-11-34/1200mm heater with a power output of 567W is an excellent choice for those who value both efficiency and aesthetics. Its versatility ensures optimal performance in both professionally installed systems and private homes. Please note that since April 2020, the grille must be ordered separately, allowing customization to match individual stylistic preferences.

Construction and Application

The heater’s design is based on a robust steel housing coated with a durable paint finish. The Cu-Al heat exchanger (copper tubes with aluminum fins) ensures rapid and even heat distribution throughout the room. The Terraline heater is designed for floor-mounted installation and features a high working pressure (up to 10 bar) and operating temperature (up to 110°C).

Thanks to its design, this heater is particularly recommended for spaces with extensive glazing—it creates an invisible air barrier that minimizes heat loss. The ability to connect multiple heaters into a single circuit allows precise adjustment of heating capacity to suit the specific needs of each room.

Benefits and Features

• Fast heating response: The use of aluminum in the heat exchanger enables rapid attainment of the desired temperature.
• Invisible heating system: Once installed, only the aluminum frame and grille are visible—available in either curved or linear designs—to preserve interior aesthetics.
• Silent operation: No moving parts ensure quiet performance, making it ideal for bedrooms and offices.
• Versatility: Compatible with room thermostats or individual capillary thermostats for flexible control.
• Durability: The galvanized steel housing provides long-term protection against corrosion.
• Flexible installation: Ability to connect multiple units into longer runs and custom-length manufacturing allows perfect adaptation to any interior layout.
• Heat exchanger material: Copper-aluminum combination ensures high heat transfer efficiency and structural longevity.
• Dimensions: Grille frame width: 340 mm, height: 110 mm, length: 1200 mm.