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Chrome-bevel sheet on grid paper — specs and return notes filed under the bay.
This 1/2-inch NPT gas valve is compatible with both Hot Surface Ignition (HSI) and Direct Spark Ignition (DSI) systems
When troubleshooting a 3-blink error code or TCO/Pressure Switch failed open status on GPVL-50 or Cyclone Xi models
Precision Operation: Manages critical timing for the hot surface ignitor and inducer
Built for demanding mechanical environments
the Lennox Y4151 is the official manufacturer-designated direct replacement for part number 46M99
Lochinvar & A.O. Smith 100109920 Thermostat 324846-701 This 1/2-inch NPT gas valveThe Lochinvar & A. O. Smith 100109920 Thermostat is a heavy duty, OEM replacement thermostat designed for high precision temperature regulation in commercial and industrial water heating applications. As a Type 89T13 control, this single pole, double throw (SPDT) electric thermostat is engineered with an integrated high limit safety cut off, ensuring the unit shuts down if temperatures exceed safe operating parameters. Technicians frequently utilize