a manufacturer-approved LP conversion kit (often sold separately) must be used to ensure correct orifice sizing and regulator spring tension

ensuring proper airflow monitoring and furnace sequencing

Professional Grade: Built with a 1/4" barb connection to prevent vacuum leaks and ensure a stable SPST signal

Electrical Compatibility: Rated for 1/4 HP at 120/240 VAC

filling the gap for high-temp make-up air and industrial oven needs

Johnson Controls A28KA-1 Temperature Control 30067439-890 a manufacturer-approved LP conversion kitJohnson Controls A28KA 1 Industrial Thermostat, Temperature Control, 120 208 240 Vac, Two Stage, Two SPDT Switches, 0 150 Degree Temperature Setpoint Range, 5 Degree Differential Each Stage, 3 Degree Fixed Differential Between Stages, . 29" x2 1 2 Sensing Bulb, 10' Capillary Length, Knob Range Adjustment, Watertight and Dusttight A28KA 1 is identical to A28KA 1C