Lochinvar & A.O. Smith 100170643 Board 320788-704 Standard R41706-004 assemblies typically require

Standard R41706-004 assemblies typically require external circuit protection

The single cover design and replaceable seats ensure streamlined field maintenance and testing without removing the assembly from the line

the regulator vent must be piped to the atmosphere in accordance with local mechanical codes to ensure safety and proper industrial regulator performance

While calibrated for a 20 psig main air supply

utilizing advanced microprocessor logic to ensure precise timing

Lochinvar & A.O. Smith 100170643 Board 320788-704 Standard R41706-004 assemblies typically requireThe Lochinvar & A. O. Smith 100170643 Thermostat Control Board is a critical OEM replacement part engineered for high efficiency CB 045 260 hydronic boilers. As a dual stage integrated boiler control, this module manages complex heating cycles by monitoring real time system activity and adjusting firing rates to meet precise demand. It features a broad max setpoint range of 150F to 200F and a reliable min setpoint range of 110F to 140F, ensuring