maintaining a leak-proof seal under standard operating parameters

Verify your motor's lead-end rotation before installation to ensure proper airflow direction

The integrated auxiliary end switch (SPDT) provides a dry contact signal to cycle the circulator pump or boiler once the valve reaches the open position

Direct compatibility with Burnham gas boiler parts simplifies the 100959-01 installation process for field technicians

the component has reached the end of its service life and requires immediate replacement

Johnson Controls A19ADB-39 Utility Thermostat 318973-401 maintaining a leak-proof seal underUtility Thermostat, 120 208 240 Vac, 100 240 Degree Temperature Range, 20' Capillary Length, Open Hi, Remote Bulb, Manual Reset, Enclosed Setpoint Adjustment A19ADB 39 is the direct replacement for A19ADN 2 ( 2 WAS FM LISTING, 39 NOT FM RATE) This item is not eligible for free shipping.