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Heating and Air-Conditioning Installer-Servicer

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A.12

WORK PROCESS SCHEDULE 

HEATING AND AIR-CONDITIONING INSTALLER-SERVICER
O*NET-SOC CODE: 49-9021.01 RAPIDS CODE: 0637
ALTERNATE TITLES: AIR-CONDITIONING MECHANIC, ENVIRONMENTAL-CONTROL
SYSTEM INSTALLER-SERVICER, HEATING AND AIR-CONDITIONING MECHANIC,
HEATING MECHANIC

This work process schedule is attached to and a part of the Apprenticeship Standards for the above identified occupation. This sequence of Related Classroom Instruction is competency-based and will be offered as traditional classroom training or independent study, which may include electronic media.

1.  TERM OF APPRENTICESHIP
The term of the occupation shall be four (4) years with an OJL attainment of 8000 hours supplemented by the required hours of related technical instruction.

2.  RATIO OF APPRENTICES TO JOURNEYWORKERS
One (1) Apprentice to one (1) Journeyworker: one apprentice for the first skilled journeyworker employed, and one additional apprentice for each additional skilled journeyworker employed thereafter.

3.  APPRENTICE WAGE SCHEDULE AND FRINGE BENEFITS
Apprentices shall be paid a progressively increasing schedule of wages and fringe benefits based on a percentage of the current journeyworker wage rate.

Term: 8000 Hours 
1st 1000 hours = 50 percent of journeyworker’s rate and fringe benefit payments
2nd 1000 hours = 55 percent of journeyworker’s rate and fringe benefit payments
3rd 1000 hours = 60 percent of journeyworker’s rate and fringe benefit payments
4th 1000 hours = 70 percent of journeyworker’s rate and fringe benefit payments
5th 1000 hours = 75 percent of journeyworker’s rate and fringe benefit payments
6th 1000 hours = 80 percent of journeyworker’s rate and fringe benefit payments
7th 1000 hours = 85 percent of journeyworker’s rate and fringe benefit payments
8th 1000 hours = 90 percent of journeyworker’s rate and fringe benefit payments

4.  SCHEDULE OF WORK EXPERIENCE (See attached Work Process Schedule)

Apprenticeship Committees may add to the work processes prior to submitting these Standards to the appropriate Registration Agency for approval.

5.  SCHEDULE OF RELATED INSTRUCTION (See attached Related Classroom Instruction Outline)

Instruction can incorporate elements of both electronic media and traditional classroom including online training, distance learning, or independent study of established curriculum. Curricula modules are based on industry standardized applications of current construction practices. Modules are knowledge and skill based including a system for assessment. The assessment will include task objectives, procedures, review materials, and competency-based performance tests.

A12.1- HEATING AND AIR-CONDITIONING INSTALLER-SERVICER WORK PROCESS SCHEDULE 

This instruction and experience shall include the following operations, but not necessarily in the listed sequence. Time spent on specific operations need not be continuous.

1. General Trade Orientation 
a. Care and use of tools
b. Test and measurement devices
c. Types and sizes of fittings, piping, and tubing
d. Safety procedures
e. Equipment records and reports
f. Environmental safety, CFC handling

2. Fabrication of Systems Components 
a. Cut, thread, flare, bend, shape piping and tubing
b. Install fittings
c. Solder and braze tin fittings and components
d. Care and use of torches
e. Silver and soft soldering

3. System Installation and connection 
a. Electrical supply lines and cables
b. Electrical connections
c. Water service lines
d. Air supply lines
e. Steam lines and steam return lines
f. Steam traps and strainers
g. Pressure reduction, expansion, evaporators, stop valves
h. Suction and discharge lines
i. Gauges
j. Dehydrators
k. Filters and strainers
l. Controls

4. Equipment Installation
a. Install condensers
b. Prepare compressor and motor bases
c. Install and align compressors and motors
d. Install evaporators and other cooling coils
e. Install and align centrifugal pumps and bases
f. Use slings, lines, blocks and falls, chain hoists, rollers, dollies and skids

5. System Maintenance 
a. Troubleshoot field systems
b. Test pressure and flow
c. Check liquid levels
d. Check and repair leaks
e. Purge, dehydrate, and recharge systems
f. Repair, align, adjust fans and blowers
g. Align pulleys, bearing blocks, and belt tension

6. Equipment Repair 
a. Disassemble and clean, repair, renew, and test compressors
b. Repair, pressure test, dehydrate evaporators
c. Repair condensers, roll condenser tubes
d. Remove, replace, disassemble, test, clean, calibrate, and renew parts on controls of all types:
1. Pneumatic
2. Electrical
3. Electro-pneumatic
4. Thermostatic
5. Humidity
6. Pressure
7. Vacuum

7. Machine Shop Practice 
a. Use of grinders, drill presses, lathes
b. Tool and drill sharpening

8. Miscellaneous 
a. Housekeeping
b. Safety
TOTAL HOURS 

A12.2 – HEATING AND AIR-CONDITIONING INSTALLER-SERVICER RELATED CLASSROOM INSTRUCTION

Note: Due to regional and local code differences and climate conditions, duration of instructional competencies/modules are suggested estimates only.

Modules:

  1. Basic Safety 15
  2. Introduction to Construction Math 15
  3. Introduction to Hand Tools 10
  4. Introduction to Power Tools 5
  5. Introduction to Blueprints 7.5
  6. Basic Rigging 20
  7. Introduction to HVAC
  8. Copper and Plastic Piping Practices
  9. Soldering and Brazing
  10. Basic Electricity
  11. Introduction to Cooling
  12. Introduction to Heating
  13. Air Distribution Systems
  14. Chimneys, Vents, and Flues
  15. Maintenance Skills for the Service Technician
  16. Alternating Current
  17. Basic Electronics
  18. Electric Heating
  19. Introduction to Control Circuit Troubleshooting
  20. Accessories and Optional Equipment
  21. Metering Devices
  22. Compressors
  23. Heat Pumps
  24. Leak Detection, Evacuation, Recovery, and Charging
  25. Planned Maintenance
  26. Troubleshooting Gas Heating
  27. Troubleshooting Electric Heating
  28. Troubleshooting Oil Heating
  29. Troubleshooting Cooling
  30. Troubleshooting Heat Pumps
  31. Troubleshooting Accessories
  32. Troubleshooting Electronic Controls
  33. Hydronic Heating and Cooling Systems
  34. Airside Systems
  35. Air Properties and Balancing
  36. Advanced Blueprint Reading
  37. Indoor Air Quality
  38. Energy Conservation Equipment
  39. Building Management Systems
  40. Water Treatment
  41. System Start-Up and Shut-Down
  42. Heating and Cooling System Design
  43. Commercial and Industrial Refrigeration

TOTAL HOURS

*DOL apprenticeship program standards recommend 144 hours related instruction per level and/or year.

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