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        • Trench Technology
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        Products

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        Our products are intended exclusively for B2B sales.

        Katherm NK

        Natural convection.

        • Heating
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        For heating with natural convection

        • for use in noise-sensitive rooms with a high proportion of glass surfaces
        • To cover the heating requirement, cold air screening and residual heat coverage
        • Energy-saving operation with LPHW
        • Simple installation and hydraulics connection with suitable valve sets
        • Individual customization to building geometries
        • Primary air intake via connectable supply air ducts
        • Cover plates for privacy and protection against soiling
        • Extensive range of rolling and linear grilles with matching frames

        Slip joints possible

        • Detachable headpiece
        • for easy coupling of the trench convectors
        • for attaching dummy sections, miter corners, etc.

        Cover plate

        • As a privacy screen for valve installation
        • to protect against soiling

        Heat exchanger

        • made of proven copper/aluminum combination
        • Optimized for air flow and heat distribution
        • graphite-grey coated

        Robust height adjustment

        • Step-stable height adjustment for safe elevation of the trench convectors
        • with plastic cap for sound decoupling

        Frame edge

        • Frame edge in the color of the Grille finish

        Width, height & length

        Trench convectors can be selected in different lengths (A) depending on the version, so that they can be optimally integrated into common window hinge systems.

        The functional width (B) and height (C) allow individual adaptation to the floor structure and at the same time determine the performance of the trench convectors.

        Continuous hinges can be realized using empty parts, column recesses, angles, etc.

        Width (B)Height (C)Length (A)
        137 mm92 mm800 - 5000 mm
        137 mm120 mm800 - 5000 mm
        182 mm92 mm800 - 5000 mm
        182 mm120 mm800 - 5000 mm
        182 mm150 mm800 - 5000 mm
        182 mm200 mm800 - 5000 mm
        232 mm92 mm800 - 5000 mm
        232 mm120 mm800 - 5000 mm
        232 mm150 mm800 - 5000 mm
        232 mm200 mm800 - 5000 mm
        300 mm92 mm800 - 5000 mm
        300 mm120 mm800 - 5000 mm
        300 mm150 mm800 - 5000 mm
        300 mm200 mm800 - 5000 mm
        380 mm92 mm800 - 5000 mm
        380 mm120 mm800 - 5000 mm
        380 mm150 mm800 - 5000 mm
        380 mm200 mm800 - 5000 mm

        Grate start / Grate design

        Various grating variants are available for the cover, which ideally meet both functional and design requirements. Different materials can be selected depending on the application area.

        In addition, different surface coatings and colors are possible in order to achieve a visual adaptation to the building architecture and interior design.

        It is technically relevant that the choice of material and geometry can influence the free air cross-section and thus have an impact on the performance of the unit. These effects are taken into account in the performance calculation.

        Grille designGrille finishGrille bar spacingFree area, approx.
        Roll-up grilleAluminium, natural anodised9.0 mm65 %
        Roll-up grilleAluminium, brass anodised9.0 mm65 %
        Roll-up grilleAluminium, bronze anodised9.0 mm65 %
        Roll-up grilleAluminium, black anodised9.0 mm65 %
        Roll-up grilleAluminium, light bronze9.0 mm65 %
        Roll-up grilleAluminium, painted DB 7039.0 mm65 %
        Roll-up grilleStainless steel10.5 mm65 %
        Roll-up grilleStainless steel, polished 10.5 mm65 %
        Roll-up grilleBrass, natural9.0 mm65 %
        Linear grilleAluminium, natural anodised9.0 mm65 %
        Linear grilleAluminium, brass anodised9.0 mm65 %
        Linear grilleAluminium, bronze anodised9.0 mm65 %
        Linear grilleAluminium, black anodised9.0 mm65 %
        Linear grilleAluminium, light bronze9.0 mm65 %
        Linear grilleAluminium, painted DB 7039.0 mm65 %
        Linear grilleStainless steel10.5 mm65 %
        Linear grilleStainless steel, polished 10.5 mm65 %
        Linear grilleBrass, natural9.0 mm65 %

        Heat outputs

        • The heat outputs were determined in accordance with DIN EN 16430 (Part 1-2) under realistic conditions on the basis of DIN EN 442.
        • The standard regulates the performance measurements in uniform standards, especially for trench convectors.
        • Ensuring uniform comparability of different units.
        • Safety in planning and design.

        Arrangement of air outlet for cooling / heating

        • Directly on the façade, without greater distance (A, B)
        • Provide on-site expansion joints (1) to prevent compression by screed, for example
        • Arrangement of convectors on the window side
        • Effective heating and shielding of glass surfaces to prevent condensation
        • Rising air forms an air roll that ventilates draught-free into the room

        supply air trenches

        Additional, attachable ZL supply air ducts are available for the Katherm NK, allowing additional treated supply air to be introduced into rooms.

        Features:

        • Trench length 400 mm
        • Different nozzle sizes / designs possible
        • Regulation of the air flow via built-in sliding elements
        • Low air discharge velocities for pleasant comfort
        • Low noise emission with correct design
        • Low investment and maintenance costs
        • No wearing parts / no electrically rotating parts

        Supply air volume flow

        The slider can be moved into different positions to set the required volumetric flow for the room on the supply air module.

        • Four different slider positions are possible (100%, 75%, 50% and 30% open).
        • Reading the air volume flow, sound level and pressure losses from the diagrams in the technical documentation regarding comfort.
        • Intermediate values can be interpolated

        Life Cycle Assessment Data (LCA)

        • Considers the environmental impact of the product over its entire life cycle.
        • Published as an Environmental Product Declaration (EPD) in accordance with standard EN 15804.
        • Available for download at International EPD System.
        • Item number-specific life cycle assessment data in the technical data sheets.
        • Product is registered in the DGNB Navigator (building product platform).

        Serves as proof for certification systems, e.g:

        • DGNB (German Sustainable Building Council);
        • BREEAM (Building Research Establishment Environmental Assessment Method);
        • LEED (Leadership in Energy and Environmental Design).

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