9100-E: VAV Diffuser – Belimo Motor

Submittal Form


The Young Regulator 9100 series (Model 9100-E) VAV ceiling diffusers are used to vary air volume from a wall-mounted thermostat. The diffusers are

designed to maintain coanda effect of discharge air along the ceiling. This provides a sustained discharge velocity throughout the volume range, and effectively

induces room air to achieve true VAV in both heating and cooling modes.

A direct-coupled actuator, installed outside the air stream on the neck of the diffuser, modulates to vary the supply air discharge opening.This varies the supply air volume in response to changes in the room temperature. Locating the actuator outside of the air stream makes servicing and troubleshooting convenient.

Operating diffusers from individual wall thermostats enables users to choose their own desired comfort level. This eliminates the problem of having to rely on inaccurate, slow acting, wax-type thermally powered actuators.

Additional information

Back Cone

Unitary Stamped Seamless Steel Construction w/ 4-Way Discharge Pattern

Face Plate

Removable Plaque Style


Back Enamel


24” x 24”
6” Neck through 14” Neck – Nominal – 1/4”
12” x 12”
6” and 8” Neck – Nominal – 1/4”


Surface Mount Standard, Lay in Fame Option


T-720 For Proportional Modulation
T-422 For Proportional Modulation
T-312-CE For Floating Modulation
Add Supply Air Sensor for Automatic Heat/Cool Changeover


Up to 8 Units Off One Thermostat