Io Hvac Controls VDR-08 Round Vav Diffuser 8 in Neck

Product Description

The IO HVAC CONTROLS VDR-08 is a round variable air volume (VAV) diffuser designed for ceiling-mounted supply air distribution in commercial and light commercial HVAC systems. It features an 8-inch neck connection and an 18-inch face diameter, allowing it to handle variable airflow while delivering even throw patterns across the conditioned space. The unit weighs 16.2 pounds and is built for integration with VAV terminal units or controllers. Licensed HVAC technicians and sheet metal contractors install this diffuser as part of a zoned air distribution system where airflow must be modulated by zone demand.

The VDR-08 is suited for interior ceiling installations in office buildings, retail spaces, schools, and other light commercial applications where round diffusers are specified. It connects to round ductwork via the 8-inch neck and mounts flush to the ceiling tile or drywall surface. The 18-inch face provides broad coverage appropriate for standard bay spacing in open-plan commercial layouts. This diffuser is typically used where a VAV box or controller upstream modulates supply airflow in response to zone thermostat demand.

Key Features

• 8-inch neck connection for standard round duct takeoffs
• 18-inch face diameter for broad supply air coverage
• Round VAV diffuser design for variable airflow distribution
• Ceiling-mount configuration for commercial and light commercial systems
• 16.2-pound unit weight suitable for standard ceiling grid or drywall installation

Compatibility

Designed as an OEM-style round VAV diffuser for ceiling-mounted supply air applications using 8-inch round duct connections in commercial HVAC systems.

Installation Notes

Installation should be performed by a licensed HVAC technician or sheet metal contractor familiar with VAV air distribution systems. Shut down the air handling unit and de-energize the VAV controller before connecting ductwork and mounting the diffuser. Secure the diffuser to the ceiling structure per local mechanical code requirements, ensuring the neck collar forms an airtight connection to the supply duct. Verify airflow balance after startup in accordance with ASHRAE 111 or project commissioning specifications.