making it ideal for high-pressure baseboard and fan coil applications

Optimized Flow Control: Specifically calibrated for a CV of 25 to maintain equal percentage throttle response

found in standard HVAC control systems

27" WC switch to trip frequently

Lochinvar & A.O. Smith 100208486 Indicator Board 30067439-890 making it ideal for high-pressureThe Lochinvar & A. O. Smith 100208486 Indicator Board is a critical diagnostic component designed for Copper Fin II boiler and water heater systems. This OEM display interface provides real time visual feedback on system status, allowing technicians to monitor the firing rate, blower power levels, and RPM diagnostics directly from the unit. As a direct replacement for legacy part numbers RLY2044 and RLY2044K, this board ensures seamless communication