The TV-U55 meters supply air to each zone with a pressure-independent damper and an averaging flow sensor, so the design airflow arrives regardless of what the rest of the duct system is doing. The actuator and controller mount at the factory, wired and stroke-tested.
The insulated casing keeps the box quiet in the void, and the round inlet collar seats standard spiral duct with one clamp. Commissioning values store in the controller and read back over the network — no ladder required for rebalancing.
