As the direct updated replacement for the 033199-0539

Smith Custom Hi-Power units

this motor provides reliable HVAC replacement motor performance in open ventilation environments

Technicians should use a calibrated 0-30 psi gauge at the output port

Trane CNT3666 Pressure Switch 326058-756 As the direct updated replacementThe Trane CNT3666 Pressure Switch is a critical safety component engineered for precise draft monitoring in high efficiency HVAC systems. This single pole single throw (SPST) switch is factory calibrated to a 0. 15" WC set point, ensuring the inducer motor establishes a proper vacuum before allowing the ignition sequence to proceed. Designed as a direct OEM replacement pressure switch, it features a 1 4" barbed connection for secure pneumatic tubing