The company will be introducing its new AutoDraft® rooftop exhausters/draft inducers at next month’s AHR Expo. By adding the constant pressure controller (CPC), fan speed is automatically regulated based on a user-set manifold-vent pressure, designed to provide “perfect draft and true energy savings,” says the company. Features include simple interlock connections and adjustable pre- and post-purge and fan speed, breaking to quickly reach the pressure setpoint when exhaust loads are suddenly reduced. Makeup-combustion air blower and exhauster can be interlocked into a single controller.

— Tjernlund Products, Inc.

White Bear Lake, MN