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Optimal Airflow: Precision-engineered to maintain the static pressure necessary for residential and commercial blower motors
System Protection: Acts as a primary safety limit switch to shut down the burner before pressure imbalances damage the heat exchanger
By bypassing the low-pressure switch during the initial startup phase
A28AA-37 is identical to A28AA-37C
Rheem-Ruud SP310020 Thermostat 321042-401 Optimal Airflow: Precision-engineered to maintainThe Rheem Ruud SP310020 Thermostat is a high performance 110 170F SPST Thermostat designed specifically for precision temperature regulation in residential electric water heaters. As a 59T series lower thermostat manufactured by TOD, this unit provides a reliable single pole, single throw (SPST) contact configuration, ensuring efficient cycling of the heating element. It operates across a broad temperature adjustment range of 110F to 170F with a
