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The SEALED UNIT PARTS CO HL504 is a crucial gas furnace limit switch designed for safety and efficiency. This device monitors the temperature of the furnace to prevent overheating. When the internal temperature reaches a critical level, the switch interrupts the heating cycle, ensuring safe operation. The HL504 activates at two hundred forty degrees Fahrenheit and deactivates at two hundred degrees Fahrenheit, ensuring accurate temperature regulation.
The HL504 is vital for preserving the integrity and safety of gas furnaces.
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