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the PP3728 helps maintain proper head pressure and system efficiency during cooling operation
5" WC for natural gas applications to maintain consistent burner flame stability
Compressor Protection: Integrated anti-short cycle delay is easily configured via internal jumpers to extend equipment life
5 MFD capacitor for reliable startups
it is standard practice for a licensed HVAC contractor to inspect the primary and secondary limits for carbon tracking or pitting during replacement to ensure the safety circuit remains intact
Lochinvar & A.O. Smith 100111921 Relief Valve 30067439-890 the PP3728 helps maintain properThe Lochinvar and A. O. Smith 100111921 Relief Valve is a critical safety component designed for high efficiency commercial boilers and water heaters. Engineered to meet strict ASME Section IV requirements, this pressure relief valve protects the heat exchanger and plumbing system from over pressurization by opening at its specific factory set PSI. This genuine OEM replacement part replaces older part numbers including 100111921 and RLVAL2409,