Is 440V necessary if my system is 230V

and 150 Series controls

Direct OEM Compatibility: Verified replacement for 626561R and 626612-series switches in Nordyne and Intertherm systems

Specifically balanced for Nordyne furnace and AC units

Nordyne 661029R Orifice Is 440V necessary if myThe Nordyne 661029R is a precision engineered #29 NG Main Burner Orifice specifically designed for Natural Gas furnace applications. As a genuine OEM replacement part, it ensures the exact BTU output and atmospheric mixing required to maintain the combustion integrity of the burner assembly. This orifice features a fixed #29 drill size, critical for regulating fuel flow in several Intertherm, Miller, and Nordyne gas furnace series, including the M1,