Week #5

Week #5 Topics

Suggested Readings

HVAC system components (study figures on pages 836-837, 839 & 841)

Metering devices (textbook pages 472-473)

Lectures ⁄ Practice Exams

Introductions

Jobs available in the HVAC field

EPA 608 Type I appliances (EPA study guide pages 13-15)

Practice Exam Core A-3

Practice Exam Type I A-1

Review questions:

Name the things that must take place within a heating or cooling system prior to a call for heating or cooling?

Describe the process of attaching and purging manifold gauges. See pages 216-217 for additional information.

Beginning of class questions:

1) A customer has hired you to perform maintenance on a through-the-wall A⁄C unit. What tasks are needed to complete the job?

2) You believe that the high limit switch on a furnace has been tripped. As quickly and as safely as possible you shut down the furnace, remove the wires from the limit switch, and test the switch using your meter. If the switch has been tripped, what would you expect to see on your meter and why?

Lab Work Completed

Identifying air conditioning components & charging A⁄C systems: MVAC

Attaching gauges and charging systems (Ford vehicle, R-134a)

See #3 in the Additional Resources section for MVAC performance testing and refrigerant charging details.

Type I appliance maintenance & repair – window & wall air conditioners

Complete inspection of a residential A⁄C system.

For your convenience, an alternative EPA 608 study guide has been placed within the Additional Resources section. It can be downloaded to your phone, tablet or computer.