Rheem-Ruud 42-22655-02 Relay Featuring both normally open (NO)

Featuring both normally open (NO) and normally closed (NC) contacts

preventing erratic cycling and delayed response times in hydronic heating and domestic hot water systems

this plenum high limit control ensures the sensing element is positioned directly in the airflow for rapid response to overtemperature conditions

Its robust construction facilitates a reliable gas line connection

Rheem-Ruud 42-22655-02 Relay Featuring both normally open (NO)The Rheem Ruud 42 22655 02 Relay is a professional grade Delay On Break (DOB) timer engineered for high cycle HVAC performance. This specific OEM HVAC replacement part is critical for preventing compressor short cycling, which protects the system from premature mechanical wear and electrical stress during rapid thermostat fluctuations or brownouts. Formulated as a 5 minute time delay relay, it ensures the refrigerant pressures in the compressor have