IMD 4071 - Installation

• List three crafts involved in air-conditioning installation.

• Identify types of duct system installations.

• Describe the installation of metal duct.

• Describe the installation of duct board systems.

• Describe the installation of flexible duct.

• Recognize good installation practices for package air-conditioning equipment.

• Discuss different connections for package air-conditioning equipment.

• Describe the split air-conditioning system installation.

• Recognize correct refrigeration piping practices.

• State start-up procedures for air-conditioning equipment.

• Describe a standing pressure test.

• Describe the six classes of leaks.

• Explain the test procedures for evaporator and condenser section leaks.

• Explain the test procedures for suction and liquid-line leaks.

• Explain the test procedures for temperature-, pressure-, and vibration-dependent leaks.

• Choose a leak detector for a particular type of leak.

• Describe a deep vacuum.

• Describe two different types of evacuation.

• Describe two different types of vacuum measuring instruments.

• Choose the correct high-vacuum pump.

• List some of the proper evacuation practices.

• Describe a deep-vacuum single evacuation.

• Describe a triple evacuation.

• Explain the process involved in cleaning a system after a hermetic motor burnout.

• Describe ozone depletion and global warming.

• Discuss how CFCs deplete the earth’s ozone layer.

• Differentiate between CFCs, HCFCs, HFCs, and HCs.

• Discuss popular refrigerants (including R-410A) and their applications.

• Discuss refrigerant blends.

• Discuss temperature glide and fractionation as it applies to refrigerant blends.

• Discuss refrigerant oils and their applications.

• Discuss EPA regulations as they relate to refrigerants.

• Define the terms recover, recycle, and reclaim.

• Describe methods of recovering refrigerants, including active and passive methods.

• Discuss oil-less recovery machines.

• Identify a DOT-approved recovery cylinder.

• Describe a quick-connect or quick-coupler as they apply to refrigerant conservation.

• Discuss the general considerations in retrofitting an R-22 system

• Describe how refrigerant is charged into systems in the vapor and liquid states.

• Describe system charging using two different weighing methods.

• State the advantage of using electronic scales for weighing refrigerant into a system.

• Describe two types of charging devices.

• Charge refrigerant blends incorporating a temperature glide and fractionation potential.

• Charge fixed orifice, capillary tube, and piston (short-tube) air-conditioning systems using charging charts and curves.

• Use the subcooling method of charging to charge air- conditioning and heat pump systems that incorporate a thermostatic expansion valve (TXV) as the metering device.

• Use modern temperature/pressure charts that incorporate dew point and bubble point values for calculating subcooling and superheat.