HERM for the hermetic compressor

Featuring a 300VA power rating

helping you minimize downtime on the job site

it includes a bottom 1/4" male NPT connection and a side 1/4" compression fitting

Features a durable 1/2 inch NPT thread for leak-free integration with Weil McLain Ultra series boilers

Johnson Controls A421ABC-04 Temperature Control Els PW 17895 HERM for the hermetic compressorThe Johnson Controls A421ABC 04 is a line voltage, single stage electronic temperature control designed to provide precise switching for HVACR systems. Operating on 120 240 VAC, this controller features a versatile SPDT output relay that manages heating or cooling applications across a wide temperature control range of 40 to 212? F. As the upgraded successor, the A421ABC 04 is a direct replacement for the A419ABC 3, though technicians should verify