Weil McLain 383-500-650 Blower Assembly Kit R-410A it features a 45-second prepurge

it features a 45-second prepurge and interpurge cycle to ensure the combustion chamber is clear

the flame rectification process generates a microamp signal that prevents nuisance lockouts and gas valve failure

and MUY series

With a 1/2" NPT connection and a robust 4 Cv flow coefficient

The package includes a mounting bracket

Weil McLain 383-500-650 Blower Assembly Kit R-410A it features a 45-second prepurgeFor 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