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If the 24V power supply or control signal is lost
this "fire rod" style immersion heater features a 1-inch diameter heating element that prevents refrigerant migration into the oil sumps during off-cycles
This switch acts as a primary safety interlock
ensuring optimal heat dissipation and airflow for your outdoor unit
Johnson Controls D-3153-20 Damper Actuator THPU32HP7Y If the 24V power supplyFor versatile pneumatic control of ventilation and safety dampers, the Johnson Controls D 3153 20 Damper Actuator provides a rugged, field ready solution. Engineered with a large 15 inch synthetic elastomer diaphragm and a durable die cast aluminum body, this linear actuator is built for high demand environments. It features a 3 inch stroke and a nominal 8 13 psi spring range, ensuring consistent displacement in both proportional and two position
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