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Duotone terrace — saffron brief on the left, garden-folded ledger on the right.
This HVACR ignition transformer is built to withstand high-temperature environments
Environmental Protection: The NEMA 4X enclosure ensures the unit is watertight and corrosion-resistant for harsh conditions
Precision-fit geometry ensures the paddle interfaces correctly with the microswitch actuator
Durable Construction: High-grade stainless steel ensures long-term resistance to metal fatigue and chemical degradation from refrigerant oil
it regulates the solenoid-actuated gas flow to the burner manifold
Lochinvar & A.O. Smith 100109721 Upper Probe 340155-7024 This HVACR ignition transformer isThe Lochinvar & A. O. Smith 100109721 Upper Probe is a critical OEM replacement part engineered for the inner control assembly of high efficiency commercial water heaters. As a high performance hot surface igniter, this 100109721 probe is essential for ensuring reliable ignition cycles and precise flame sensing in BTH Series units. Designed to meet exact factory specifications, it eliminates the common failure points associated with generic
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