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preventing downstream pressure inaccuracies
installing this calibrated limit control ensures the system maintains optimal combustion airflow and safety compliance without the need for manual intervention
The high limit adjustment allows for a 3 to 1 psig differential relative to supply pressure
Common signs include the inducer motor running continuously without ignition
Watts 0121409 Valve Refrigerant preventing downstream pressure inaccuraciesThe Watts 0121409 (Model LF40L 2) is a high capacity lead free temperature and pressure relief valve engineered for heavy duty commercial water heater applications. Designed as the direct lead free replacement for the 0154830 and 40L 2 150, this valve provides critical automatic temperature and pressure protection for large scale hot water supply tanks. It features a 1 inch MNPT inlet and FNPT outlet, boasting a substantial ASME rating of 2,134,000