Constant Airflow Regulator
Model CAR-FD constant airflow regulator with a UL rated fire damper is designed to save a significant amount of money and energy by precisely controlling airflow to balance HVAC systems without the need for electrical or pneumatic controls and sensors. A self-regulating aero-wing and spring piston design automatically adjust for variable duct pressures caused by building duct design, thermal stack effect, dust build up in air filters, and other varying building conditions. The CAR-FD fire damper employs curtain style blades for point-of-origin control of fire in static or dynamic HVAC systems.
Frame: Fire resistant ABS plastic.
Blade: Self regulating aero-wing.
Spring: Full circumference rubber gasket.
Adjustment: T-10 Torx star drive.
VFD-10 and VFD-10D Standard Construction: See applicable sheet for construction, rating and listing detail.
3"Ø (76 Ø)
4"Ø (102 Ø)
5"Ø (127 Ø)
6"Ø (152 Ø)
8"Ø (203 Ø)
10"Ø (254 Ø)
Pressure Range: 0.2 in. wg. - 1.0 in. wg. (50 Pa - 249 Pa)
Fire Damper Rating: Static.
Available Fire Damper Sizes:
Min. 4" x 4" (102 x 102)
Max. 24" x 24" (610 x 610)
UL R38307/2043: Heat release rate and smoke optical density
UL R1176/555: 1-1/2 hr. vertical and horizontal
Temperature: -25oF to 145oF (-32oC to 63oC)