Specifications – Series CDIR

Round Industrial Ceiling Diffuser
CDIR-1 – Flush Surface Mount

Air outlets shall be model CDIR manufactured by GREENHECK Diffusers shall be constructed of an opposed blade damper inner assembly mounted in an outer ring. Outlets shall allow the adjustment of the discharge pattern from full horizontal to full vertical and be adjustable from the face by turning an operator ring. Units shall be steel construction. The units shall be the size and quantity as outline in the plans and specifications.

Pattern adjustment operator shall open the inner opposed blade damper assembly to discharge the air in a vertical pattern or close the damper to allow a tight horizontal pattern. In the horizontal setting, core shall project discharge pattern to minimize ceiling smudging. The inner core assembly shall be removable for installation and for access into the ductwork.

Performance Specification
The manufacturer shall provide published performance data. Data shall be tested in accordance to ANSI/ASHRAE Standard 70- 2006.

Paint Specification
Process shall be anodic electrodeposition using an anodic acrylic paint. Units shall undergo pre‐ treatment including a pressurized spray stage using an alkaline cleaner and a de‐ionized water rinse.