Engineering for high-pressure steam and hot water applications

the blade pitch is calibrated specifically for the F125's motor RPM and heat exchanger resistance

the 21-153 restrictor ensures consistent impedance in your air lines

For horizontal applications

Rheem-Ruud 62-22578-01 HSI Module 30067439-890 Engineering for high-pressure steam andThe Rheem Ruud 62 22578 01 HSI Module is a critical 120 24V electronic hot surface ignition control designed for precise burner sequencing in residential HVAC units. This OEM certified module manages the 34sPP (34 second pre purge) cycle to clear the combustion chamber of residual gases before initiating the 8sTFI (8 second trial for ignition) window. As a veteran grade HVAC ignition control board, it utilizes a dual voltage architecture (120V for the