Pay in 4 interest-free payments of $27.10 Learn more
Ships within 48 hours · Estimated delivery Sep 9 - Sep 14
Chrome-bevel sheet on grid paper — specs and return notes filed under the bay.
Key Benefits True Differential Pressure Measurement: Single-diaphragm design eliminates calculations and potential errors associated with line pressure fluctuations
reduced airflow
As a direct successor to legacy part numbers HH79NZ016 and HH79NZ014
Multi-Refrigerant Compatibility: Optimized for HFC R407C and suitable for R134a retrofits
Durable Construction: Features an iron body and stainless steel spring for long-term performance in hydronic environments
Lochinvar & A.O. Smith 100170643 Board 318973-401 Key Benefits True Differential PressureThe 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