Belimo NFBUP-S Actuator Freon as high-altitude adjustments typically require

as high-altitude adjustments typically require parts calibrated for thinner air densities

making it a reliable choice for medium-sized air handlers and terminal units

This model features a convertible high-pressure reset

the D4S is specifically rated for low-flow duct detection

As a veteran-preferred HVAC blower assembly

Belimo NFBUP-S Actuator Freon as high-altitude adjustments typically requireThe Belimo NFBUP S is a high performance spring return actuator designed for On Off control in HVAC systems. Providing 90 in lb of torque, this unit ensures reliable fail safe operation for large dampers and control valves. Operating on a universal supply voltage of 24 to 240 VAC or 24 to 125 VDC, the NFBUP S eliminates the need for site specific power converters, simplifying field installations. It features a built in auxiliary switch for position