The Vent-Axia RD14 is a high-capacity 14 Amp three-phase 5‑step auto transformer, engineered for use with roof-mounted fan units. This speed controller offers precise fan control across five speed levels, enabling smooth airflow regulation without the hum or vibration typically associated with electronic controllers.
It features a compact, fire-retardant surface-mounting enclosure for easy installation in commercial environments. The RD14 eliminates the need for a separate starter when used with HOT SPOT protected fans, simplifying setup and reducing hardware requirements.
This model includes additional terminals for connecting to remote switching devices and anti-freeze thermostats, adding extra flexibility and protection in temperature-sensitive installations.
With its robust design and support for remote control integration, the RD14 is a reliable solution for controlling fan speed in demanding commercial and industrial ventilation systems.