REFR 144: HVACR Year 4 Week 4

Apprentices will study the International Mechanical Code and related City of Seattle amendments to earn a City of Seattle Refrigeration License. They will also identify types and parts of operational boiler systems, including combustion controls, sequencing burners, and valves. They will gain insights into the water conditions that can impact the safe operation of boilers. Apprentices in the HVAC pathway will review procedures to commission a building, including testing electrical devices, evaluating the performance of mechanical systems, and steps to inspect, maintain and document a commissioned system. Apprentices in the refrigeration pathway will increase knowledge of building automation by reviewing how controller networks in supermarket systems operate, the brands, hardware and control devices commonly seen in Pacific Northwest systems. They will also learn how to operate manage parallel oil rack systems.