White-Rodgers 5D51-35 Control 30067439-890 the 013G-8015 is specifically designed

the 013G-8015 is specifically designed for two-pipe hot water (hydronic) systems and should not be used in steam applications

providing reliable proof-of-air for the combustion process without the common failures often seen in universal aftermarket alternatives

its primary role is weather protection and solar shielding

Optimized Flame Pattern: Engineered for natural gas to provide maximum thermal contact with the thermocouple

Precision Alignment: Features two set screws—one over the key and one at 90 degrees—for secure positioning on the shaft

White-Rodgers 5D51-35 Control 30067439-890 the 013G-8015 is specifically designedThe White Rodgers 5D51 35 is a heavy duty fan and limit control engineered for high static pressure applications and forced air heating systems. This warm air control features a 5 inch insertion probe utilizing a bimetal sensing element to provide precise thermal response. As a universal furnace fan limit switch, it manages blower motor activation and provides critical high limit safety cutouts to prevent heat exchanger damage. The unit includes