The Bosch HVAC 8718588223 Beckett-AquaSmart Control is an electronic control module designed to manage heating system operation and improve system efficiency. It monitors temperature and operating conditions, then coordinates burner and circulator functions according to system demand. This control is used with compatible Bosch and Beckett-AquaSmart oil-fired boilers and hydronic heati... https://www.partshnc.com/bosch-hvac-8718588223-beckett-aquasmart-control