May 21, 2022  
2020-2021 Course Catalog 
    
2020-2021 Course Catalog [ARCHIVED CATALOG]

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HCR 270 - Advanced Heating & AC

Credits: 5
Lecture Hours: 2
Lab Hours: 6
Practicum Hours: 0
Work Experience: 0
Course Type: Voc/Tech
This course covers installation, advanced troubleshooting, maintaining and repairing of geo-thermal heat pumps, gas, fuel oil and electric heating systems.
Prerequisite: HCR 256  
Competencies
  1. Identify and describe the function of an air to air heat pump.
    1. Explain the function of the coils in summer and winter.
    2. Explain the function of the reversing valve.
  2. Identify and describe function of a water source heat pump.
    1. Calculate the gpm of a geothermal heat pump.
    2. Calcualte the BTU output of a geothermal heat pump.
  3. Identify the various heat pump loops, such as open loop, closed loop, geothermal loop.
  4. Explain the drilling or boring of a geo thermal loop field and why we grout.
    1. List and describe the advantages and disadvantages of a horizontal loop vs. a vertical loop.
    2. List and describe material used for grouting of loops.
  5. Identify the various metering devices used for heat pumps.
  6. Identify the components of an air to air heat pump.
    1. Explain the function of the reversing valve.
    2. Explain the function of the accumulator.
    3. Explain the function of a defrost timer.
  7. Explain the meaning of COP (co-efficiency of performance).
  8. Calcualte the heat quantity in Btu/h for a geothermal heat pump.
  9. List the sequence of operations of a high efficiency furnace.
  10. Dismantle and reassemble the components of a high efficiency furnace.
    1. Remove the blower motor, inspect it and reinstall it.
    2. Remove the inducer motor, inspect it and reinstall it.
    3. Remove the burner assembly, inspect it and reinstall it.
  11. Identify and explain the operation of direct spark igniters, hot surface igniters and spark to pilot ignition in a high efficiency furnace.
  12. Trouble shoot and replace a control module on a furnace.
  13. Trouble shoot a high efficiency furnace.
    1. Check for voltage across a pressure switch.
    2. Use a volt-phmmeter to measure flame current on a flame sensor.
    3. Use a volt/ohmmeter to check a high limit switch and a roll-out switch for proper operation.
  14. Troubleshoot a high efficiency air conditioner.
    1. Calculate sub-cooling and superheat.
    2. Check the condition of a compressor using an ohmmeter.
    3. Check the condition of a condenser fan motor using an ohmmeter.
  15. Attend a Lennox, Carrier, Ruud and Trane factory training lab.
  16. Identify components of a hydronic heating system.
  17. Install furnace and air
  18. Rewire 2 different high efficiency air conditioner
  19. Program 2 different computerized thermostats
  20. Breakdown and reassemble 1 high efficiency furnace
  21. Troubleshoot high efficiency furnace 4 times
  22. Troubleshoot high efficiency air conditioner 4 times
  23. Wire the HS780 module
  24. Wire the SP715A module
  25. Wire the G60P module
  26. Wire the PL605 module
  27. Wire the S86IOU module
  28. Wire the S86 module
  29. Wire the S890 module
  30. Wire the S860 module
  31. Wire the S87 module
  32. Wire the S90 module
  33. Wire the 50A50 module
  34. Wire the 50E47 module
  35. Troubleshoot 6 different modules
  36. Wire the G951EDB-1401 circuit board
  37. Wire the S9201A circuit board
  38. Wire the Hamilton standard circuit board
  39. Check micro amps on 2 intermittent gas furnaces
  40. Check micro amps on 2 hot surface igniters



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