as well as specific Hartland HCT configurations

making it an ideal choice for energy-efficient HVAC control and lighting management

it requires no maintenance or recalibration in typical commercial environments—significantly reducing truck rolls and long-term service costs for contractors

maintaining the mechanical integrity of the original installation

Lochinvar & A.O. Smith 100170643 Board 318423-701 as well as specific HartlandThe 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