Rheem-Ruud SP9012B Valve 321894-708 Does this thermostat require a

Does this thermostat require a C-wire (Common)

fan cycling typically requires an "Open Low" (P70A) action

The 5300-652 is an SPST switch that opens the circuit on temperature rise

While primarily used for water heaters

Key Benefits: Exact OEM Match: Fully replaces 100163025 and MSC2447 for guaranteed fitment in specific Lochinvar and A

Rheem-Ruud SP9012B Valve 321894-708 Does this thermostat require aWhen you're dealing with high output commercial boilers or ultra high efficiency gas water heaters like the Spiderfire or XTREME series, the Rheem Ruud SP9012B Valve is the industry standard for maintaining system integrity. This 1" MxF 150# T&P Valve is engineered to handle a massive 500,000 BTU HR capacity, making it a critical safety component for large scale domestic hot water applications. Built with a heavy duty bronze body, it features a 1 inch