HVAC-R

9th Grade:

• Install & troubleshoot oil heating equipment
• Explain concepts relating to direct current (DC) and alternating current (AC), Ohm's law, Watts' law and how they pertain to volts, amperes, ohms, impedance, and watts.
• Describe and perform an oil burner efficiency test and adjust according to manufacturer's specifications.
• Identify, describe the use of, and install various types and sizes of steel pipe and copper tubing.
• Explain the importance of HVAC&R in modern society.
• List refrigerant properties and accurately perform superheat, delta T, and sub-cooling calculations.

10th Grade:

• Explain the basic principles of heating, ventilating, and air conditioning & refrigeration systems.
• List and describe the types of regulatory codes & licensing in the HVAC&R industry.
• Demonstrate wiring HVAC&R controls, motors, and circuits.
• Demonstrate the use of wire isolation and line transformers, relays, contactors, timers, sequencers and switches.
• Demonstrate refrigerant charging techniques of air conditioning and pump systems using manufacturers' recommended procedures.
• Install and troubleshoot gas heating equipment.
• Describe characteristics of and troubleshoot 80% and 90% plus efficiency gas furnaces.
• Install LP/Natural gas conversion kits.
• Describe and demonstrate the application of various types of electric motor
• Install and troubleshoot gas heating equipment.
• Describe classifications, properties, and different applications of refrigerants and use Temperature/Pressure and enthalpy chart

11th Grade:

• Calculate heat loss/gain for a structure.
• Design and draw basic forced-air duct system.
• Demonstrate processes and procedures used to troubleshoot and adjust humidification accessories.
• Describe and use the different standards/codes of measuring indoor air quality (IAQ) such as air-filtration systems, ventilation systems, air-contaminants (pollutants particulates), Ozone, and measuring instruments.
• Field-test furnace/boiler operation with industry approved instruments.
• Install and service oil-fired boilers and furnaces.
• Describe characteristics of, and maintain and service hydronic components (e.g., pumps and circulators).
• Install and service gas boilers and furnaces to manufacturers' specifications.
• Identify career opportunities available in the HVAC&R industry.
• Describe and install heat pump with electric heating elements.
• List and describe the characteristics of and test heat pump reversing valves.

12th Grade:

• Successfully complete the R-410a Safety Course.
• List and describe the characteristics of compressors
• List and describe the characteristics of metering devices
• List and describe the characteristics of condensers.
• List and describe the characteristics of evaporators.
• List and describe various types of liquid line components.
• Install and describe various types of suction line components.
• Describe the structure of the Massachusetts Electrical Code (MEC).
• Discuss and implement estimating methods for pricing jobs using drawings/prints.