Level Three consists of 240 hours of classroom & shop activities expanding on some of the material introduced in Levels One and Two as well as introduce new materials.

	Refrigeration Code
	Start-up procedures
	System air measurements
	Application of computers in trade
	Motor protection, maintenance and installation
	Refrigerant pipe sizing
	Hydronics
	System capacity control
	Evacuation & dehydration
	Heat pumps
	Defrost systems
	Psychrometrics
	Fan systems
	Air conditioning loads
	Refrigeration system components

 

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