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this L300F high limit switch is engineered to monitor heat exchanger temperatures and interrupt the burner circuit if conditions exceed a safe thermal threshold of 300°F
two-position
Key Benefits Precise Thermal Calibration: Factory-set L170-40F rating ensures the Reznor 57953 trips at exactly 170°F to protect the heat exchanger
the part must be swapped
Using it with non-LF actuators will result in improper fitment and potential mechanical failure
Carrier LH33CZ010 Ignition Module THPU32HP7Y this L300F high limit switchThe Carrier LH33CZ010 Ignition Module is a high reliability intermittent pilot ignition (IID) control designed for precise burner management in Carrier and Bryant furnaces, rooftop units (RTUs), and air handlers. Engineered as a direct OEM replacement part, this module is technically identical to the G775RGA 2 and serves as the current successor to legacy components including LH33CZ009, LH33CZ007, LH33CZ006, and LH33CZ004. Operating on a 25V AC input
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