Direct Compatibility: Engineered specifically for Utica-Dunkirk boiler systems to eliminate field-modification guesswork

Can I use this switch on a VFD output

Common Questions: What happens if a crankcase heater is not installed on an outdoor unit

Includes precision-machined brass LP orifices for accurate BTU input control

Johnson Controls A19BBC-4 Utility Thermostat 30067439-890 Direct Compatibility: Engineered specifically forThe Johnson Controls A19BBC 4 Utility Thermostat is a rugged, SPDT temperature control designed for heavy duty HVACR applications, including cooling towers, refrigeration units, and unit heaters. Engineered with a stainless steel coiled sensing element, this mechanical thermostat operates without the need for external power, making it a reliable choice for process temperature control in demanding environments. It supports high capacity electrical