6° to 12°F interstage differential for fine-tuned equipment cycling

Extended End Connections: The 1/2" ODF copper tails allow for fast brazing into the line without damaging internal components

Is a C-wire required for the White-Rodgers 1F85U-42PR

Efficient Installation: Utilize the 1/2" sweat connections for a leak-free

Under a typical load

Maxitrol A1010U Amplifier 30067439-890 6° to 12°F interstage differentialThe Maxitrol A1010U Amplifier is a high performance 24Vac universal Selectra amplifier engineered for precise flame modulation in commercial and industrial indirect fired heating systems. As a veteran grade replacement part, this unit serves as the universal Selectra amplifier for legacy Series 20 and Series 21 systems, providing integrated high fire ignition and low fire start capabilities essential for consistent burner performance. It is designed