ZEHNDER Terraline convector radiator with natural convection UN-09-21/1600mm, heating capacity: 531W, grille to be ordered separately UN 09-21/ 1600/ ALUM.NAT

Channel Heater – Discreet Comfort and Efficient Heating

The ZEHNDER Terraline channel heater is the ideal solution for those who value minimalist design and high functionality. This model, with a heating output of 531W and natural convection, performs excellently in spaces where aesthetics and the absence of visible heating elements are essential. Its design allows for seamless integration into the floor, creating a discreet interior feature.

Construction and Application

The Terraline heater consists of a durable steel casing coated with powder paint and a high-efficiency heat exchanger made from an aluminum-copper combination. This material pairing ensures rapid heating and effective heat distribution throughout the room. Designed for floor-mounted installation, it perfectly complements large glazing areas, minimizing heat loss and ensuring thermal comfort. Note: The grille for this heater is available for separate order.

Advantages and Benefits

• Discreet Design: The floor-integrated heater is nearly invisible, preserving the interior’s aesthetic integrity.
• Efficient Heating: The aluminum-copper heat exchanger ensures fast and even heat distribution.
• Quiet Operation: Natural convection guarantees silent performance—comfort without disturbance.
• Fast Heating: Quickly reaches optimal temperature, ensuring comfort even on colder days.
• Ideal for Large Glazing: Minimizes heat loss in rooms with extensive glass surfaces.
• Durability and Reliability: Constructed from high-quality materials (steel casing, aluminum-copper heat exchanger), resistant to corrosion and mechanical damage.
• Safety: Maximum operating pressure of 10 bar and operating temperature of 110°C ensure safe operation.

Technical Specifications and Dimensions

The ZEHNDER Terraline UN-09-21/1600mm heater features the following dimensions: grille frame width 215 mm, length 1600 mm, and height 90 mm. The heat exchanger is made of aluminum and copper; the grille frame is made of steel. The heater’s rated output is 531W (according to EN 442 standard at 20°C room temperature and ΔT = 50°C). The heater casing is made of steel.