Belimo NFB24-SR-S Actuator 320788-704 If the diagnostic fault is

If the diagnostic fault is caused by a cracked housing

Key Benefits Dual-Stage Precision: Optimized for high-efficiency furnaces

it is frequently specified for low-to-medium pressure steam systems where chemical compatibility and thermal expansion are primary concerns

the 1171654 OEM filter frame features pre-punched mounting holes for precise alignment with the cabinet frame

Designed for natural gas (NG) applications

Belimo NFB24-SR-S Actuator 320788-704 If the diagnostic fault isThe Belimo NFB24 SR S is a high performance spring return damper actuator engineered for reliable fail safe operation in HVAC systems. Delivering 90 in lb of torque, this proportional control actuator operates on a 2 10VDC control signal and is compatible with both 24VAC and 24VDC power supplies. Designed for demanding damper automation and valve linkage applications, it features a rugged NEMA 2 rated housing and integrated auxiliary switches for