Engineered for compatibility with high-capacity Aaon rooftop units and chillers

Consistent fin spacing ensures uniform air distribution across evaporator or condenser coils

and blower motors

allowing for flexible remote sensing in boilers

physical bulging of the casing

McDonnell & Miller RB-122E Control 30067439-890 Engineered for compatibility with high-capacityThe McDonnell & Miller RB 122E (Part Number 144676) is a heavy duty conductance type low water cut off designed specifically for residential and light commercial hot water boilers. As a veteran preferred electronic LWCO, it features a 120VAC power requirement and a 3 4" NPT connection, making it high performance protection against dry firing. This unit includes a patented self cleaning probe that reduces scale build upa common failure point in