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When an external safety limit (ECO) opens
typically used as a primary temperature controller to cycle the compressor or solenoid
Its IP67-rated enclosure protects internal windings against moisture ingress and vibration
protecting compressor motor windings from burnout
it is often wired through the main control board or contactor auxiliary contacts to ensure proper off-cycle heating
Reznor 18549 Relay 328140-751 When an external safety limitThe Reznor 18549 is a heavy duty SPDT RBM Relay engineered for precision control in ventor motor and combustion air applications. Serving as the verified replacement for 98118, this 24V AC DC component is built for the rigorous duty cycles of industrial and commercial heating systems. With a coil resistance of 72 ohms and a robust contact rating of 10 amps, it ensures consistent switching for high demand loads. This relay is essential for maintaining
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