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GMCAIR HVAC SYSTEMS AND EQUIPMENTS LLC
VDL- HIGH EXPOSURE SWIRL DIFFUSERS

VDL- HIGH EXPOSURE SWIRL DIFFUSERS

Product catalog summary

Overview: The document provides detailed information about VDL High Exposure Swirl Diffusers used in HVAC systems by GMCAIR HVAC SYSTEM & EQUIPMENT LLC. These diffusers are designed to create a swirl in air conditioning systems, enhancing air distribution and comfort in rooms.

Description: The VDL swirl diffusers are ceiling-mounted and designed to supply air efficiently by creating a swirl effect. This results in high induction of room air, reducing airflow velocity and temperature differences. They support large volume flow rates and ensure mixed flow ventilation with minimal turbulence in occupied zones. Two types are available: VDL with adjustable blades (6-12 blades) and VDL-S with fixed blades (12 blades).

Material and Function: Made from galvanized sheet metal, these diffusers have adjustable air control blades for different air patterns suitable for cooling or heating. They allow for omni-directional horizontal air discharge and vertical discharge in heating mode. The temperature difference between supply and room air can range from -12 to +15 K. Available in nominal sizes of 315, 400, 630, and 800 mm, with a volume flow rate range of 65 – 1080 l/s.

Finishing and Installation: Standard finishing includes powder coating in RAL9010, with other colors available upon request. Installation options include screw mounting or no fixing, with accessories like a plenum box available.

Technical Data: The document includes a quick selection table for technical specifications, such as throw distance, sound level, pressure drop, and output speed, calculated for a temperature difference of +10 K for heating.

Installation Methods: Three installation methods are described: plenum box mounting with overhead or lateral access, and direct mounting to the channel. Examples include freely suspended installations and installations in continuous ceilings.

Order Codes: The document provides a coding system for ordering, detailing options for neck diameter, blade type, mounting, coating, and plenum box inclusion.

Catalog excerpts

VDL- HIGH EXPOSURE SWIRL DIFFUSERS High Exposure Swirl Diffusers GMCAIR HVAC SYSTEM&EQUIPMENT LLC www.gmcairgrille.com - [email protected]

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VDL- HIGH EXPOSURE SWIRL DIFFUSERS 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, thereby rapidly reducing the airflow velocity and the temperature difference between supply air and room air. Ceiling swirl diffusers allow for large volume flow rates. The result is a mixed flow ventilation in comfort zones, with good overall room ventilation, creating only very little turbulence in the occupied zone : Adjustable Blade (6-12 Blades) VDL-S: Fixed Blade (12 Blades) MATERIAL : Galvanized...

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VDL- HIGH EXPOSURE SWIRL DIFFUSERS GMCAIR HVAC SYSTEM&EQUIPMENT LLC www.gmcairgrille.com - [email protected]

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VDL- HIGH EXPOSURE SWIRL DIFFUSERS Schematic illustration of the VDL, with plenum box for horizontal duct connection ① Diffuser face ② Decorative cap ③ Swirl unit with opposed blades (only with nominal sizes 630 and 800) ④ Plenum box ⑤ Suspension hole ⑥ Spigot Options ⑦ Lip seal ⑧ Actuator and cross bar Horizontal directional air discharge GMCAIR HVAC SYSTEM&EQUIPMENT LLC www.gmcairgrille.com - sales@gmc

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VDL- HIGH EXPOSURE SWIRL DIFFUSERS TECHNICAL DATA VDL QUICK SELECTION TABLE The firing distances in the table are calculated by calculating ∆T = + 10 K for heating. Comfort level is 1,80m. The arrival speed is 0.25 m / s. La(m) : Throw Distance N (dB) : Sound Level P(Pa) : Pressure Drop Vb(m/s) : Output Speed GMCAIR HVAC SYSTEM&EQUIPMENT LLC www.gmcairgrille.com - [email protected]

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VDL- HIGH EXPOSURE SWIRL DIFFUSERS Plenum Box Mounting (Overhead Access) Planum Box Mounting (Lateral Access) Direct Mounting to Channel Installation examples Freely suspended installation Installation in continuous ceilings GMCAIR HVAC SYSTEM&EQUIPMENT LLC www.gmcairgrille.com - [email protected]

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VDL- HIGH EXPOSURE SWIRL DIFFUSERS ORDER CODES D: Neck Diameter VDL: 12-6 blades (adjustable) VDL-S : 12 blades (Fixed) 00: No Mounting SM: Screw Mounting 00: Without Plenum Box PL: With Plenum Box 00: No coating EX: Eloxal Coating RAL----: Powder Coating GMCAIR HVAC SYSTEM&EQUIPMENT LLC www.gmcairgrille.com - [email protected]

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.

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