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CLASS B AIR CONDITIONING CONTRACTORS

GENERAL TRADE KNOWLEDGEEXAMINATION CONTENT INFORMATION

Revised March 2009

Class B Air Conditioning Contractors General Trade Knowledge Examination Content InformationPage 1 of 14

The General Trade Knowledge examination will be

administered in one session on the morning of thefirst day of the examination administration. It willconsist of 80 equally weighted questions.

The examination will have questions relating to thefollowing content areas and necessary knowledgefor each area includes: reading and interpreting plans and

specifications reading and interpreting codes basic mathematics

(addition, subtraction, multiplication, division,

calculations of area and volume, fractions,decimals, percentages, calculating the sides oftriangles, square roots, powers of numbers,and solving simple algebraic equations forunknown variables)

You should be prepared to respond to examinationquestions on any of the content areas listed.Questions asked and content areas tested onprevious examinations should not be assumed tobe the only possible questions to be asked orcontent areas to be tested on this examination.

The percentage of questions shown for eachcontent area may vary by as much as plus orminus three (3) percent. Please refer to theCandidate Information Brochure and the ReferenceList for additional information.

Content Area A 15%Pre-Installation

1. Reading and interpreting plans andspecifications

knowledge of symbolsknowledge of scales

2. Recommending changes to plans and

specificationsknowledge of equipment costingknowledge of equipment efficiencyknowledge of design requirements

3. Recommending different types ofequipmentknowledge of equipment costingknowledge of effects on equipment efficiencyknowledge of heating and cooling loadsknowledge of seasonally adjusted and energyefficiency ratio

knowledge of air flow and duct designknowledge of psychrometrics diagramsknowledge of pump curvesknowledge of fan curves

4. Applying energy conservation principlesknowledge of effects on equipment efficiencyknowledge of Florida energy codesknowledge of R and U factorsknowledge of seasonally adjusted energyefficiency ratioknowledge of pump curves

knowledge of fan curves

5. Calculating thermal resistanceknowledge of R and U factorsknowledge of Florida energy codes

6. Discussing EER and SEER with owners andarchitectsknowledge of EER and SEER calculationsknowledge of Florida Energy Codesknowledge of Florida Building Energy RatingSystem

knowledge of ARI listingsknowledge of cost analysis and costeffectiveness

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7. Determin ing HVAC load(Heating, Ventilation, Air Conditioning)knowledge of Florida energy codesknowledge of heating and cooling loadcalculationsknowledge of R and U factors

8. Determin ing material and equipment liveload requirementsknowledge of weights of materialsknowledge of structural capabilitiesknowledge of rigging

9. Designing HVAC systems(Heating, Ventilation, Air Conditioning)knowledge of equipment efficiencyknowledge of psychrometricsknowledge of heating and cooling loadsknowledge of seasonally adjusted and energy

efficiency ratioknowledge of pressure and enthalpyrelationship (diagrams)knowledge of air flow and duct designknowledge of pipe sizingknowledge of wiring requirements, proceduresand techniquesknowledge of types of controls andrequirementsknowledge of refrigeration requirements

10. Designing duct systems

knowledge of air flow and duct designknowledge of insulation requirements

11. Determining proper HVAC equipment(Heating, Ventilation, Air Conditioning)knowledge of manufacturer's equipmentknowledge of proper sizingknowledge of loadsknowledge of psychrometricsknowledge of proper locations of equipmentknowledge of codes

12. Determining proper pipe sizesknowledge of pipe sizing tablesknowledge of valves and fittingsknowledge of liquid flowknowledge of resistance to flow andfriction losses

13. Determining proper control requirementsknowledge of wiring requirements andprocedures and techniquesknowledge of types of control and requirementsknowledge of air conditioning equipmentknowledge of refrigeration equipment

14. Determining proper fan motor requirementsknowledge of wiring requirements, proceduresand techniquesknowledge of fansknowledge of fan motorsknowledge of fan performance and CFM

15. Determining proper pipe insulationknowledge of heating and cooling loadsknowledge of R and U factorsknowledge of insulating techniques andrequirements

16. Determining proper compressor capacityknowledge of heating and cooling loadsknowledge of refrigeration requirements

17. Designing grease handling duct systemsknowledge of air flow and duct designknowledge of sizingknowledge of fan and motor capabilitiesknowledge of filter requirementsknowledge of fire and building codes

18. Unloading, lifting and lowering materialsknowledge of safety requirementsknowledge of loading and lifting equipmentknowledge of rigging techniques andrequirements

Content Area B 10%Sheet Metal Ducts

1. Fabricating rectangular ducts under 2 ftknowledge of sheet metal ducts

knowledge of fiberglass ductsknowledge of flex ductsknowledge of duct fittingsknowledge of duct outlets and grilles

2. Fabricating rectangular ducts over 2 ft.knowledge of sheet metal ductsknowledge of fiberglass ductsknowledge of duct fittingsknowledge of duct outlets and grilles

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3. Fabricating round sheet metal ductsknowledge of sheet metal ductsknowledge of duct fittingsknowledge of duct outlets and grillesknowledge of flex ducts

4. Taping duct seams

knowledge of sheet metal ductsknowledge of fiberglass ductsknowledge of flex ductsknowledge of duct fittingsknowledge of duct outlets and grillesknowledge of mastics and tapes

5. Fabricating standing seams for sheet metalductsknowledge of duct fittingsknowledge of sheet metal ducts

6. Fabricating snap lock seams for sheet metalductsknowledge of duct fittingsknowledge of sheet metal duct designrequirements

7. Fabricating other locks and seamsknowledge of sheet metal ductsknowledge of fiberglass duct liners

8. Fabricating interior lined sheet metal ductsknowledge of duct fittings

knowledge of sheet metal duct designrequirements

9. Fabricating fittings for rectangular ductsknowledge of duct fittingsknowledge of sheet metal ducts

10. Fabricating fittings for round ductsknowledge of duct fittingsknowledge of sheet metal lay out

11. Fabricating kitchen hoods

knowledge of codesknowledge of sheet metal lay out

12. Fabricating kitchen hood exhaustsknowledge of codesknowledge of sheet metal lay out

13. Fabricating drain pansknowledge of codesknowledge of sheet metal lay out

Content Area C 25 %Installation of Refrigeration and HVAC Systems

1. Installing split system air conditionersknowledge of duct fittingsknowledge of sheet metal ductsknowledge of air handlers

knowledge of refrigerant pipingknowledge of insulation requirementsknowledge of thermostatsknowledge of heat stripsknowledge of condensate pipingknowledge of condensate overflow protection

2. Installing package system air conditionersknowledge of refrigeration cyclesknowledge of thermostatsknowledge of heat stripsknowledge of condensate piping

knowledge of condensate overflow protection

3. Installing split system heat pumpsknowledge of refrigeration cyclesknowledge of condensersknowledge of air handlersknowledge of refrigerant pipingknowledge of insulationsknowledge of thermostatsknowledge of heat stripsknowledge of condensate pipingknowledge of condensate overflow protection

knowledge of fire stats

4. Installing package heat pumpsknowledge of refrigeration cyclesknowledge of heat pump installationrequirementsknowledge of thermostatsknowledge of heat stripsknowledge of condensate pipingknowledge of condensate overflow protectionknowledge of fire stats

5. Installing air cooled systemsknowledge of air cooled condensersknowledge of air cooled system installationrequirements

6. Installing water cooled systemsknowledge of water cooled condensersknowledge of water cooled system installationrequirements

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7. Installing secondary coolant systemsknowledge of secondary coolant condensers

8. Installing chil led water(or other temperature) systemsknowledge of chilled water loopsknowledge of water chillers and evaporators

9. Installing water towersknowledge of evaporative coolingknowledge of water tower principles, forceddrag and induced draftsknowledge of secondary coolant condensers

10. Installing systems under 25 tonsknowledge of installation techniques for systemand associated componentsknowledge of dead loadsknowledge of controls

knowledge of wiring procedures andtechniquesknowledge of compressor capacities

11. Installing centrifugal compressor systemsknowledge of centrifugal compressorsknowledge of chilled water systemsknowledge of chilled water loopsknowledge of water chillers and evaporatorsknowledge of pipe fittingsknowledge of motor startersknowledge of gauges

knowledge of valves and fittings

12. Installing absorption cycle systemsknowledge of absorption cyclesknowledge of absorption cycle refrigerantsknowledge of refrigerant piping

13. Installing ultra low temperature systemsknowledge of multistage refrigerationknowledge of cryogenicsknowledge of low temperature refrigerantsknowledge of refrigeration equipment

knowledge of refrigerant piping techniques

14. Installing low and medium temperaturesystemsknowledge of refrigeration equipmentknowledge of refrigerant piping techniquesknowledge of CFC's, HFC's, and blendsknowledge of refrigerant recovery and retrofitknowledge of EPA regulations

15. Installing walk-in coo lersknowledge of refrigeration equipmentknowledge of evaporatorsknowledge of expansion valvesknowledge of defrost equipmentknowledge of refrigerant pipingknowledge of controls

16. Installing reach-in coolersknowledge of refrigeration equipmentknowledge of evaporatorsknowledge of expansion valvesknowledge of defrost equipmentknowledge of refrigerant pipingknowledge of controls

17. Installing ventilation systems (duct work)knowledge of air flow and duct designsknowledge of fire codes

knowledge of scale dimensionsknowledge of sheet metal ductsknowledge of fiberglass ductsknowledge of flex ductsknowledge of duct fittingsknowledge of duct outlets and grillesknowledge of hanging requirements

18. Installing pneumatic control systemsknowledge of control requirementsknowledge of pneumatic pipingknowledge of pneumatic controls

19. Installing g round water (geothermal) heatpumpsknowledge of water cooled condensersknowledge of refrigeration cycles

20. Installing smoke detectorsknowledge of codesknowledge of equipment

21. Installing exhaust (or make-up air) systemsknowledge of fire codes

knowledge of air flow and duct designsknowledge of sheet metal ductsknowledge of fan and motor capacities

22. Installing grease handling duct systemsknowledge of fire codesknowledge of air flow and duct designsknowledge of sheet metal ductsknowledge of filter requirements

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23. Installing ammonia refrigerant systemsknowledge of absorption cyclesknowledge of ammonia as a refrigerant

24. Installing kitchen exhaust systemsknowledge of air flow and duct designsknowledge of fan and motor capacities

knowledge of sheet metal fabricationsknowledge of national and local fire andbuilding codesknowledge of welding

25. Testing and balancing sys temsknowledge of properties of airknowledge of fansknowledge of testing instrumentsknowledge of duct systemsknowledge of register and grillsknowledge of equations

26. Performing fire department required smoketestsknowledge of properties of airknowledge of fansknowledge of duct systemsknowledge of codes

27. Installing DDC cont rol systemsknowledge of control requirementsknowledge of DDC controls

Content Area D 15%Installation of Refrigeration and HVACEquipment Components

1. Installing air-cooled condensersknowledge of wiring requirements, proceduresand techniquesknowledge of air cooled condensercharacteristicsknowledge of metal pipesknowledge of refrigerant piping

2. Installing water-cooled condensersknowledge of wiring requirements andprocedures and techniquesknowledge of water tower characteristicsknowledge of water cooled condenserscharacteristicsknowledge of secondary coolant condensers

knowledge of metal pipesknowledge of plastic pipesknowledge of pipe fittingsknowledge of refrigerant pipingknowledge of all refrigerants

3. Installing hermetic and semi-hermeticcompressorsknowledge of wiring requirements, proceduresand techniquesknowledge of compressor characteristicsknowledge of metal pipes

knowledge of refrigerant pipingknowledge of all refrigerants

4. Installing centrifugal compressorsknowledge of wiring requirements, proceduresand techniquesknowledge of centrifugal compressorcharacteristicsknowledge of types of refrigerantsknowledge of power requirementsknowledge of design operating pressuresknowledge of motor efficiency ratings

knowledge of metal pipe fittingsknowledge of refrigerant piping

5. Installing air handlers and evaporatorsknowledge of wiring requirements, proceduresand techniquesknowledge of metal pipesknowledge of refrigerant pipingknowledge of all refrigerantsknowledge of control needs and requirementsknowledge of air handlers and characteristics

6. Installing fans and blowersknowledge of wiring requirements, proceduresand techniquesknowledge of air flow and duct designsknowledge of fansknowledge of fan motorsknowledge of air handlersknowledge of condensers

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7. Installing motors for fans and blowersknowledge of wiring requirements, proceduresand techniquesknowledge of air flow and duct designsknowledge of fansknowledge of fan motorsknowledge of air handlers

8. Installing sheet metal duct workknowledge of sheet metal ductsknowledge of duct fittingsknowledge of duct outlets and grilles

9. Installing fiberglass duct workknowledge of fiberglass ductsknowledge of duct fittingsknowledge of duct outlets and grillesknowledge of duct hanging techniques andrequirements

10. Installing other duct work (flexible)knowledge of air flex duct installation andfastening techniquesknowledge of duct fittingsknowledge of duct outlets and grilles

11. Installing grilles, registers and volumedampersknowledge of air flow and duct designsknowledge of duct outlets and grilles

12. Installing fire dampers and metal chimneysknowledge of fire codesknowledge of fire dampers and metal chimneyinstallations and fastenings

13. Installing refrigerant pipingknowledge of brazingknowledge of refrigerant pipingknowledge of pipe fittingsknowledge of pipe hangingknowledge of pipe sizing

14. Installing horizontally supported pipingknowledge of weights of materialsknowledge of structural capabilitiesknowledge of hangersknowledge of supports

15. Installing f luesknowledge of sheet metal duct installationtechniquesknowledge of duct fittingsknowledge of gas codes

16. Installing air fi lters

knowledge of air filter installation techniques

17. Installing warm air appliances (heaters)knowledge of heater installation techniquesknowledge of wiring procedures andtechniquesknowledge of fire codes

18. Installing gas appliancesknowledge of fuel gasesknowledge of gas appliancesknowledge of installing controls

knowledge of wiring procedures andtechniquesknowledge of gas codes

19. Installing fuel oil appl iancesknowledge of fuel oilsknowledge of fuel appliance installationtechniquesknowledge of types of controls andrequirementsknowledge of wiring requirements, proceduresand techniques

20. Installing heat exchangersknowledge of heat transferknowledge of installing controlsknowledge of wiring requirements, proceduresand techniques

21. Installing receiversknowledge of receiversknowledge of refrigerant pipingknowledge of local codes

22. Installing heat st ripsknowledge of wiring requirements, proceduresand techniquesknowledge of heat stripsknowledge of fire statsknowledge of fire codes

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23. Installing copper tubing and fittingsknowledge of copper tubingknowledge of refrigerant pipingknowledge of brazingknowledge of pressure testing

24. Installing other tubing or f ittings

knowledge of metal pipesknowledge of weldingknowledge of brazingknowledge of pressure testing

25. Welding and brazing copper tubingknowledge of weldingknowledge of copper tubing

26. Silver brazing copper to steel jointsknowledge of weldingknowledge of copper tubing

knowledge of metal pipes

27. Flaring copper tubingknowledge of copper tubingknowledge of flaring tools

28. Mechanically connecting tubingknowledge of manufacturers recommendations

29. Soft soldering copper tubingknowledge of brazingknowledge of copper tubing

30. Soldering swaged jointsknowledge of brazingknowledge of copper tubingknowledge of metal pipeknowledge of swaging tools

31. Welding metal with f iller rodsknowledge of metal pipesknowledge of welding

32. Installing s teel pipes

knowledge of piping and steel pipesknowledge of pipe fittingsknowledge of hangersknowledge of welding

33. Threading pipesknowledge of pipe fittingsknowledge of metal pipes

34. Cutting mi ld s teel w ith oxy-acetylenetorchesknowledge of oxy-acetylene torchesknowledge of metal pipe characteristics

35. Installing refrigerant tubing under 2 inchesknowledge of brazing

knowledge of copper tubingknowledge of flaring toolsknowledge of swaging toolsknowledge of copper fittingsknowledge of oxy-acetylene torches

36. Installing refrigerant tubing 2 inches or overknowledge of brazingknowledge of copper tubingknowledge of flaring toolsknowledge of swaging toolsknowledge of copper fittings

knowledge of oxy-acetylene torches

37. Installing refrigerant metering devicesknowledge of expansion valvesknowledge of capillary tubesknowledge of brazingknowledge of copper tubing

38. Installing heat pump reversing valvesknowledge of reversing valvesknowledge of copper tubingknowledge of low voltage wiring

39. Installing thermostatic expansion valvesknowledge of expansion valvesknowledge of copper tubing

40. Installing capillary tube metering deviceknowledge of capillary tubesknowledge of copper tubing

41. Installing l iquid line dryers and fi ltersknowledge of dryer and filtersknowledge of copper tubing

knowledge of vacuum systemsknowledge of refrigerant recovery

42. Installing suction line dryers and f iltersknowledge of dryers and filtersknowledge of copper tubingknowledge of vacuum systemsknowledge of refrigerant recovery

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43. Installing heat pump line dryers and filtersknowledge of dryers and filtersknowledge of copper tubingknowledge of vacuum systemsknowledge of refrigerant recovery

44. Installing oil t raps

knowledge of oil trapsknowledge of copper tubing

45. Installing bellows-type temperature controlsknowledge of control requirementsknowledge of temperature requirementsknowledge of copper tubingknowledge of bellows type temperaturecontrols

46. Installing chilled water low temperaturecontrols

knowledge of low temperature controlsknowledge of control requirementsknowledge of temperature requirementsknowledge of low voltage wiring

47. Installing dual, high or low-pressure controlswitchesknowledge of high and low pressure controlcharacteristicsknowledge of brazingknowledge of copper tubingknowledge of pressure requirements

knowledge of low voltage wiringknowledge of control installation techniques

48. Installing mercury-bulb temperaturecontrolsknowledge of temperature requirementsknowledge of pressure requirementsknowledge of control requirementsknowledge of low voltage wiring

49. Installing oil-pressure safety controlswitches

knowledge of pressure requirementsknowledge of safety requirementsknowledge of pipe fittingsknowledge of control characteristicsknowledge of low voltage wiring

50. Installing summer-winter sw itch-overcontrolsknowledge of low voltage wiringknowledge of temperature requirementsknowledge of control requirements

51. Installing thermostats

knowledge of low voltage wiringknowledge of temperature requirementsknowledge of control characteristics

52. Installing water regulating valvesknowledge of low voltage wiringknowledge of temperature requirementsknowledge of control requirementsknowledge of pressure requirementsknowledge of bellows type temperaturecontrolsknowledge of water valves

53. Installing pressure regulators and strainersknowledge of design pressure requirementsknowledge of control characteristicsknowledge of hot gas bypasses

54. Installing humidity and thermostaticcontrolsknowledge of control characteristicsknowledge of calibrating controlsknowledge of low voltage wiringknowledge of manufacturer's recommendations

55. Installing pneumatic controlsknowledge of pneumatic pipingknowledge of pneumatic controlsknowledge of air compressorsknowledge of control requirements

56. Soldering electrical connectionsknowledge of brazingknowledge of electrical wiring procedures andtechniques

57. Installing transformersknowledge of electrical wiring procedures andtechniquesability to read wiring diagrams

58. Installing capacitorsknowledge of electrical wiring procedures andtechniques

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59. Installing contactorsknowledge of electrical wiring procedures andtechniques

60. Installing current relaysknowledge of electrical wiring procedures andtechniques

61. Installing safety disconnectsknowledge of electrical wiring procedures andtechniques

62. Installing defrost timersknowledge of electrical wiring procedures andtechniquesknowledge of control requirementsknowledge of wiring diagramsknowledge of placement of electrical wiresknowledge of electrical relationship between

current voltage and resistance

63. Install ing defrost heatersknowledge of electrical wiring proceduresknowledge of control requirementsknowledge of defrost operation

64. Installing defrost thermostatsknowledge of electrical wiring procedures andtechniquesknowledge of control requirementsknowledge of wiring diagrams

knowledge of placement of electrical wiresknowledge of electrical-relationship betweencurrent voltage and resistance

65. Installing air-pressure swi tchesknowledge of pneumatic pipingknowledge of pneumatic controlsknowledge of air compressorsknowledge of wiring diagramsknowledge of placement of electrical wiresknowledge of electrical-relationship betweencurrent voltage and resistance

66. Installing electric humidistatsknowledge of electrical wiring procedures andtechniquesknowledge of humidity control requirementsknowledge of wiring diagramsknowledge of placement of electrical wiresknowledge of electrical relationship betweencurrent voltage and resistance

67. Installing electronic air c leanersknowledge of electrical wiring procedures andtechniquesknowledge of wiring diagramsknowledge of placement of electrical wiresknowledge of electrical relationship betweencurrent voltage and resistance

knowledge of manufacturer's recommendations

68. Wiring three-phase equipmentknowledge of electrical wiring procedures andtechniquesknowledge of wiring diagramsknowledge of placement of electrical wiresknowledge of electrical relationship betweencurrent voltage and resistance

69. Wiring single-phase equipmentknowledge of electrical wiring procedures and

techniquesknowledge of wiring diagramsknowledge of placement of electrical wiresknowledge of electrical relationship betweencurrent voltage and resistance

70. Installing three-phase equipmentknowledge of electrical wiring procedures andtechniquesknowledge of wiring diagramsknowledge of placement of electrical wiresknowledge of electrical relationship between


71. Installing s ingle-phase equipmentknowledge of electrical wiring procedures andtechniques

72. Installing capacitor start motorsknowledge of electrical wiring procedures andtechniquesknowledge of wiring diagramsknowledge of placement of electrical wiresknowledge of electrical relationship between

current voltage and resistanceknowledge of fan motorsknowledge of compressor requirements

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73. Installing shaded pole-motorsknowledge of electrical wiring procedures andtechniquesknowledge of fan motorsknowledge of wiring diagramsknowledge of placement of electrical wiresknowledge of electrical relationship between


74. Installing split-phase motorsknowledge of electrical wiring procedures andtechniquesknowledge of fan motorsknowledge of wiring diagramsknowledge of placement of electrical wiresknowledge of electrical relationship betweencurrent voltage and resistance

75. Installing fan blades

knowledge of fansknowledge of wiring diagramsknowledge of placement of electrical wiresknowledge of electrical relationship betweencurrent voltage and resistance

76. Installing fan control switchesknowledge of electrical wiring procedures andtechniquesknowledge of fan motorsknowledge of control requirementsknowledge of low voltage wiring

77. Installing hermetic compressor overloadprotectorsknowledge of electrical wiring procedures andtechniquesknowledge of safety requirements

78. Installing fan beltsknowledge of fansknowledge of motor amperage requirements

79. Installing drive pulleys

knowledge of fansknowledge of pulley ratiosknowledge of motor amperage requirements

80. Installing lim it con trol switchesknowledge of control characteristicsknowledge of safety requirements

81. Installing solenoid coilsknowledge of electrical wiring procedures andtechniquesknowledge of low voltage wiring

82. Installing magnetic s tartersknowledge of electrical wiring procedures and

techniques

83. Installing starting relaysknowledge of electrical wiring procedures andtechniques

84. Installing duty-motor protection devicesknowledge of electrical wiring procedures andtechniques

85. Installing motor controllersknowledge of motor controllers

knowledge of proper motor and overcurrentprotectionknowledge of circuit breakers and fusesknowledge of electrical wiring proceduresknowledge of controls

86. Installing p lastic pipes and fittingsknowledge of plastic pipes and fittingsknowledge of different grades of pipeknowledge of pressure testingknowledge of safety codesknowledge of joining materials

knowledge of cleaning and gluing materials

Content Area E 10%Maintenance Analysis of Refrigeration andHVAC Systems

1. Reading pressure and enthalpy diagramsfor various refrigerantsknowledge of pressure and enthalpyrelationshipsknowledge of reading pressures

knowledge of gaugesknowledge of refrigeration testing equipment

2. Reading and analyzing electrical circuitsknowledge of electrical wiring procedures andtechniquesknowledge of low voltage wiringknowledge of electrical testing equipment

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3. Testing current relaysknowledge of electrical wiring procedures andtechniquesknowledge of electrical testing equipment

4. Testing capacitorsknowledge of electrical wiring procedures and

techniquesknowledge of electrical testing equipment

5. Testing defrost thermostatsknowledge of controlsknowledge of manufacturer's recommendations

6. Testing high-voltage transformersknowledge of electrical wiring procedures andtechniquesknowledge of electrical testing equipment

7. Testing high voltage relaysknowledge of electrical wiring procedures andtechniquesknowledge of electrical testing equipment

8. Testing low voltage relaysknowledge of low voltage electrical wiringprocedures and techniquesknowledge of electrical testing equipmentability to utilize a amprobeability to utilize a ohmmeter

9. Testing magnetic startersknowledge of electrical wiring procedures andtechniquesknowledge of electrical testing equipment

10. Testing potent ial relaysknowledge of electrical wiring procedures andtechniquesknowledge of electrical testing equipment

11. Testing appropriate motor terminalsknowledge of electrical wiring procedures and

techniquesknowledge of electrical testing equipment

12. Determin ing operating pressures ofrefrigeration or air condition ing systemsknowledge of design pressure requirementsknowledge of refrigerant pressure gaugesknowledge of pressure and temperaturerelationships

13. Determining air vo lumesknowledge of air flow and duct designsability to utilize a velometerability to utilize a pitot tubeability to utilize a manometerability to utilize a volume flow meter (flow hood)

14. Determining changes in enthalpyknowledge of refrigeration testing equipmentknowledge of psychrometricsability to utilize a thermometerability to utilize a psychrometer

15. Determin ing wet bulb and dry bu lbtemperaturesknowledge of refrigeration testing equipmentknowledge of psychrometricsability to utilize a thermometerability to utilize a psychrometer

16. Determining current draw (amperage)knowledge of electrical wiring procedures andtechniquesknowledge of electrical testing equipmentability to utilize an amprobeability to utilize a volt-ohm meter

17. Determining vol tageknowledge of electrical wiring procedures andtechniquesknowledge of electrical testing equipment

ability to utilize an amprobeability to utilize a volt-ohm meter

18. Determining power consumptionknowledge of electrical wiring procedures andtechniquesknowledge of electrical testingequipment

19. Determining working pressure in pipesknowledge of pressure testing gaugesknowledge of access valves

20. Testing non-pressure type storage tanksknowledge of tanks and pollution controls

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21. Testing closed-liquid solar systems (eitherwater or air)knowledge of solar collector types andcharacteristicsknowledge of solar collector controlsknowledge of solar collector pipingknowledge of solar heating

knowledge of solar hot water heatingknowledge of refrigeration testing equipment

22. Using testing equipment(velometer, amprobe, volt-ohm meter,vacuum gauges,etc.)knowledge of electrical testing equipmentknowledge of refrigeration testing equipmentknowledge of how and when to use equipment

23. Using chlor ine and halogen leak detectingdevices

knowledge of refrigeration testing equipmentknowledge of how and when to use devices

Content Area F 15%Maintenance Service of Refrigeration andHVAC Systems

1. Using nitrogen regulatorsknowledge of pressure regulators

2. Using other gas regulators

knowledge of pressure regulators

3. Repairing semi-hermetic compressorsknowledge of electrical wiring procedures andtechniquesknowledge of mechanical methods andprocedures

4. Repairing hermetic compressorsknowledge of electrical wiring procedure andtechniquesknowledge of mechanical methods and

procedures

5. Repairing centrifugal compressorsknowledge of electrical wiring procedure andtechniquesknowledge of mechanical methods andprocedures

6. Repairing blowersknowledge of electrical wiring procedures andtechniquesknowledge of fansknowledge of fan motors

7. Calibrating air sensit ive thermostats

knowledge of electrical wiring procedures andtechniquesknowledge of fansknowledge of fan motors

8. Calibrating chil led-water low temperaturecontrolsknowledge of low temperature controlsknowledge of control requirementsknowledge of low voltage wiringknowledge of temperature requirementsknowledge of refrigeration testing equipment

9. Calibrating dual or low pressure controlswitchesknowledge of high and low pressure controlsknowledge of brazingknowledge of copper tubingknowledge of refrigeration testing equipment

10. Calibrating pneumatic controlsknowledge of pneumatic pipingknowledge of pneumatic controlsknowledge of air compressors

11. Calibrating proportional thermostatsknowledge of low voltage wiringknowledge of temperature requirementsknowledge of control requirementsknowledge of refrigeration testing equipment

12. Calibrating summer-winter switch-overcontrolsknowledge of low voltage wiringknowledge of temperature requirementsknowledge of control requirements

knowledge of refrigeration testing equipment

13. Adjusting thermostatic temperaturecontrolsknowledge of low voltage wiringknowledge of temperature requirementsknowledge of control requirementsknowledge of refrigeration testing equipment

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14. Adjusting thermostatic motor controlsknowledge of low voltage wiringknowledge of temperature requirementsknowledge of control requirementsknowledge of refrigeration testing equipmentknowledge of electrical wiring procedures andtechniques

15. Adjusting super heat setting on expansionvalvesknowledge of expansion valvesknowledge of control requirementsknowledge of refrigeration testing equipmentknowledge of superheat

16. Adjusting oi l pressure safety controlsknowledge of pressureknowledge of gaugesknowledge of pipe fittings

knowledge of control requirementsknowledge of low voltage wiringknowledge of refrigeration testing equipment

17. Adjusting mercury bulb temperaturecontrolsknowledge of temperature requirementsknowledge of pressure requirementsknowledge of control requirementsknowledge of low voltage wiringknowledge of refrigeration testing equipment

18. Adjusting high pressure safety cutoutsknowledge of high and low temperaturecontrolsknowledge of electrical wiring procedures andtechniquesknowledge of low voltage wiringknowledge of control operating requirementsknowledge of refrigeration testing equipmentknowledge of pressure gauges

19. Adjusting freezer controlsknowledge of control operating requirements

knowledge of low voltage wiringknowledge of temperature measurements

20. Adjusting defrost t ime clocksknowledge of control requirementsknowledge of low voltage wiringknowledge of electrical wiring procedures andtechniquesknowledge of temperature measurement

21. Adjusting bellows-type temperaturecontrolsknowledge of control requirementsknowledge of temperature requirementsknowledge of bellows-type temperaturecontrols operating requirements

22. Operating oil safety control solid statepressure censoring deviceknowledge of pressure requirementsknowledge of safety requirementsknowledge of control operating requirementsknowledge of low voltage wiringknowledge of refrigeration testing equipment

23. Aligning drive pulleysknowledge of mechanical alignments

24. Adjusting tension of v-belts

knowledge of how and when to adjust

25. Calibrating electric actuating valvesknowledge of mechanical operationrequirementsknowledge of refrigeration testing equipment

26. Calibrating electric humidistatsknowledge of humidity control requirementsknowledge of control requirementsknowledge of low voltage wiringknowledge of refrigeration testing equipment

27. Reversing the rotation of three-phase orsingle-phase motorsknowledge of electrical wiring procedures andtechniquesknowledge of electrical testing equipment

28. Starting seized hermetic compressormotorsknowledge of electrical wiring procedures andtechniquesknowledge of electrical testing equipment

29. Adjusting crankcase pressure regulatingvalvesknowledge of pressure regulatorsknowledge of pressure measurementknowledge of evaporatorsknowledge of compressors

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30. Adjusting evaporator pressure regulatingvalvesknowledge of pressure regulatorsknowledge of pressure measurementknowledge of evaporatorsknowledge of superheat

31. Adjusting unloadersknowledge of pressure measurement (gauges)knowledge of effect of pressure on compressorcapacities

32. Cleaning cool ing towersknowledge of cleaning chemicalsknowledge of scale propertiesknowledge of water deposit controlsknowledge of bleed-off

33. Cleaning foreign matter from systems

knowledge of cleaning chemicalsknowledge of solvents

34. Cleaning water-cooled condensersknowledge of cleaning chemicalsknowledge of water-cooled condensersknowledge of organic water problems

Content Area G 10%Safety and Equipment

1. Wearing hearing and head protectionknowledge of safety requirements

2. Installing warning signs and barricadesknowledge of safety requirements

3. Wearing eye and face protectionknowledge of safety requirements

4. Using respiratory protectionknowledge of safety requirements

5. Digging with backhoes, trenchers ortractorsknowledge of safety requirements

6. Using overhead hois ts and cranesknowledge of safety requirementsknowledge of weightsknowledge of riggings

7. Using ventilation devicesknowledge of safety requirementsknowledge of toxic materials

8. Using mobi le equipment(e.g., forklifts, hi-lifts and cranes)knowledge of safety requirements

9. Using ladders, scaffolds and rollingplatformsknowledge of safety requirementsknowledge of assembly

10. Using various hand and power tools(e.g., power shears, wrenches and snips)knowledge of safety requirementsknowledge of proper operation procedures

11. Using air compressors

knowledge of safe operating pressuresknowledge of safety requirements

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