and handles a constant volume of 400 CFM

and 2000 HydroGuard valves

Enhanced System Safety: Provides a definitive "fail-safe" that requires a technician's inspection before the system can be restored to service

minimizing downtime for professional contractors and ensuring the heating system performance meets manufacturer specifications without the need for additional conversion kits

this thermal fuse switch ensures reliable circuit interruption when the plenum temperature exceeds designated safety thresholds

Weil McLain 383-500-650 Blower Assembly Kit Els PW 29614 and handles a constant volumeFor service technicians maintaining the Weil McLain Ultra 399 series, the Weil McLain 383 500 650 Blower Assembly Kit is the essential OEM solution for restoring high efficiency combustion performance. This complete boiler combustion blower package is engineered specifically for Ultra 299, 310, and 399 condensing gas boilers, ensuring precise air fuel mixing and modulation. The assembly utilizes a 115V, 60Hz PSC motor and a durable stamped steel