System Safety: Properly interfaces boiler safety controls to verify damper position before burner ignition

and the gray port (P2) is for negative/vacuum pressure

The serrated clamping mechanism is designed to bite into the shaft surface

Is this unit compatible with electric or gas furnace backup

provided the sensed medium remains within the -30/100 degree temperature range for accurate switching

Johnson Controls A19ABC-24 Temperature Control Els PW 17895 System Safety: Properly interfaces boilerThe Johnson Controls A19ABC 24 Temperature Control is a field proven mechanical temperature control designed for heavy duty commercial and industrial applications. This single stage unit features a SPDT switching configuration, allowing it to govern heating, cooling, or ventilation equipment with industrial precision. Engineered with a wide setpoint range of 30? F to 100? F, it handles refrigeration and ambient space heating with ease. The adjustable