silver linear grille, lineat grid, living room, window facade
thermostat SIEMENS
Convectors

Zehnder
Terraline

Hydronic operation

    The Zehnder Terraline trench heater offers an elegant alternative wherever free-standing radiators should be avoided for reasons of aesthetics or underfloor heating is not possible. All that is visible is the frame, complete with integrated decorative grille. Zehnder Terraline utilises the rising warm air to create pleasant, natural warmth. The trench heater is ideal for use where there are large areas of full height glazing.

    Benefits

    • Heat exchanger's aluminium and copper construction enables short response times for fast heating of rooms
    • Invisible thermal output, built into the floor
    • Built-in floor construction makes it ideal for use in front of large windows
    • Silent operation makes it suitable for different areas of application
    • Wide range of models supports versatile use
    • Hidden connection technology in the floor
    • High thermal output means that even large rooms are heated up rapidly
    • Combines with Zehnder Comfosystems for comfortable indoor ventilation
    • Powerful heat exchanger is compatible with heat pump and/or low temperature systems
    • Special solutions support a wide range of application, such as curved or angled options, or versions with cut-outs
    • The grille can be walked on and ensures the necessary stability
    • With several designs available, the decorative grille and frame make it possible to create an individual look
    • High level of thermal output also for old buildings with a high heat load
    • An alternative in old buildings where radiators should be avoided or underfloor heating is not possible

    Technical data

    Connection to hot water central heating system

    All models
    Technical specifications for length 1000 mm
    Model H T Heat output
    75/65/20 °C 70/55/20 °C 55/45/20 °C
    mm mm Watts Watts Watts
    UN-09-17 90 170 143 113 67.8
    UN-09-21 90 215 199 157 95.3
    UN-09-25 90 255 252 202 125
    UN-09-34 90 340 300 240 148
    UN-09-42 90 420 350 280 173
    UN-11-17 110 170 173 136 81.6
    UN-11-21 110 215 218 169 98.7
    UN-11-25 110 255 295 233 140
    UN-11-34 110 340 381 303 186
    UN-11-42 110 420 424 338 207
    UN-14-17 145 170 177 139 82.6
    UN-14-21 145 215 231 181 107
    UN-14-25 145 255 338 267 162
    UN-14-34 145 340 501 397 241
    UN-14-42 145 420 613 488 300
    UN-19-17 190 170 200 157 93.9
    UN-19-21 190 215 276 215 126
    UN-19-25 190 255 328 260 159
    UN-19-34 190 340 518 408 244
    UN-19-42 190 420 725 572 344
    H = height, T = depth
    75/65/20 = Nominal heat output according to EN 442

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