Type VD
17Pages

Ceiling swirl diffusers Type VD Horizontal swirling air discharge For high rooms, with adjustable air control blades Square ceiling swirl diffusers, with manual or motorised adjustment of the air pattern to ensure draught-free ventilation of the occupied zone both in heating and cooling modes ■■ Nominal sizes 425, 600, 775, 1050 ■■ Volume flow rate range 95 – 1490 l/s or 342 – 5364 m³/h ■■ Diffuser face made of aluminium with anodised finish ■■ For supply air ■■ For variable and constant volume flows Protective cage ■■ High induction results in a rapid reduction of the temperature difference and airflow velocity ■■ Discharge direction can be adjusted manually or with an actuator ■■ Ideal for high rooms Optional equipment and accessories ■■ Exposed diffuser face available in RAL CLASSIC colours ■■ Horizontal or vertical duct connection ■■ An extended border improves the horizontal air discharge in cooling mode ■■ Protective cage for use in gymnasiums Extended border

Ceiling swirl diffusers General information Page General information Function Technical data Quick sizing Specification text Order code Variants Accessories Dimensions and weight Product details Installation examples Installation details Basic information and nomenclature Application – Type VD ceiling swirl diffusers are used as supply air diffusers for high rooms in comfort and industrial zones – For production halls, gymnasiums, theatres and conference rooms as well as for large internal spaces in airports, railway stations and shopping centres – For mixed flow ventilation with different...

Ceiling swirl diffusers VD Type VD ceiling swirl diffusers have adjustable air control blades. Different air patterns allow for cooling or heating mode, or for the adjustment to varying loads. Horizontal air discharge is omni directional. Vertical air discharge is possible in heating mode. The supply air to room air temperature difference may range from –12 to +15 K. An actuator (optional) adjusts the blades based on demand. Functional description Ceiling swirl diffusers in air conditioning systems create a swirl to supply air to rooms. The resulting airflow induces high levels of room air,...

Ceiling swirl diffusers Horizontal omni directional air discharge

Ceiling swirl diffusers Technical data Nominal sizes Minimum volume flow rate Maximum volume flow rate, with LWA ≅ 50 dB(A) Supply air to room air temperature difference

Ceiling swirl diffusers Quick sizing Quick sizing tables provide a good overview of the volume flow rates and corresponding sound power levels and differential pressures. The maximum volume flow rates apply to a sound power level of approx. 50 dB (A) with damper blade position 0°. Exact values for all parameters can be determined with our Easy Product Finder design programme. VD-H, sound power level and total differential pressure Nominal size VD-V, sound power level and total differential pressure Nominal size

Ceiling swirl diffusers Specification text This specification text describes the general properties of the product. Texts for variants can be generated with our Easy Product Finder design programme. Ceiling swirl diffusers with square diffuser face for high rooms in comfort and industrial zones. For supply air only. Blades in diagonally opposed sections can be adjusted for air discharge from horizontal (0°) to vertical (90°). Horizontal air discharge with high induction. For freely suspended installation or for suspended ceilings of all types. Ready-to-install component which consists of...

Ceiling swirl diffusers Order code  Type VD Swirl diffuser  Connection No entry: diffuser face only H Horizontal, with plenum box V Vertical, with plenum box  Adjustment No entry: manual Electric actuator E1 230 V AC, 3-point E2 24 V AC/DC, 3-point E3 24 V AC/DC, modulating 2 – 10 V DC  Accessories Only for connections H and V supplied separately K Extended border S Protective cage  Nominal size [mm] 425 600 775 1050  Exposed surface of diffuser face No entry: anodised, natural colour, E6-C-0 P1 Powder-coated, specify RAL CLASSIC colour Gloss level RAL 9010 50 % RAL 9006 30 % All...

Ceiling swirl diffusers VD-H Variant – Ceiling swirl diffuser with square diffuser face – With plenum box for horizontal duct connection Nominal sizes – 425, 600, 775, 1050 Parts and characteristics – Square diffuser face with four sections of VD-V Variant – Ceiling swirl diffuser with square diffuser face – With plenum box for vertical duct connection Nominal sizes – 425, 600, 775, 1050 Parts and characteristics – Square diffuser face with four sections of VD blades – Diffuser face with blades that can be adjusted simultaneously, for air discharge from horizontal (0°) to vertical (90°) –...

Ceiling swirl diffusers Accessories – Extended border Parts and characteristics – An extended border supports the horizontal air discharge in cooling mode Nominal sizes

Ceiling swirl diffusers Accessories – Protective cage Parts and characteristics – A protective cage protects the blades, e.g. in gymnasiums

Ceiling swirl diffusers Weights apply to the variant with actuator Weights apply to the variant with actuator

Ceiling swirl diffusers Product details Aeff vertical air discharge m²

Ceiling swirl diffusers Installation examples Freely suspended installation

Ceiling swirl diffusers Installation details Installation and commissioning – Preferably for rooms with a clear height from 3.8 m – Flush ceiling installation – VD-...-K: Also freely suspended installation – VD-V: Ceiling distance of at least 300 mm allows for continuous adjustment of the air pattern – Horizontal or vertical duct connection Installation information – Installation can be flush with the ceiling or freely suspended – If the VD is mounted flush with an open cell ceiling, the resulting air pattern is the same as with freely suspended installation – Continuous adjustment of the...