Maricopa Community Colleges  HVA234   19986-20022 
Official Course Description: MCCCD Approval: 03/24/98
HVA234 19986-20022 LEC 3 Credit(s) 3 Period(s)
HVAC and Refrigeration Installation
Industry codes used by the trades. Pipe and duct installation practices. Procedure for the installation of heating, ventilation, air conditioning and refrigeration (HVAC) equipment. Calculation of roof pitch and wire size for HVAC equipment. Start-up procedures for HVAC equipment. Prerequisites: HVA115 or permission of instructor. Corequisites: HVA234LL.
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MCCCD Official Course Competencies:
 
HVA234   19986-20022 HVAC and Refrigeration Installation
1. Review of specific trade codes related to heating, ventilation and air conditioning (HVAC) installation. (I)
2. Describe proper piping techniques for specific applications. (II)
3. Identify specific duct fittings. (III)
4. Explain the procedures for preparing a built-up roof to set a roof-curb. (IV)
5. Explain the procedures for setting a roof jack on a pitched roof . (V)
6. Calculate the pitch of a roof. (VI)
7. Calculate the wire size for a specific HVAC or refrigeration unit. (VII)
8. Select proper HVAC or refrigeration equipment based on design calculations. (VIII)
9. Explain the start-up procedure for specific equipment. (IX)
10. Calculate the pipe size for a specific site. (X)
11. Evaluate existing system versus proposed system and code updates. (XI)
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MCCCD Official Course Outline:
 
HVA234   19986-20022 HVAC and Refrigeration Installation
    I. Codes
        A. Electrical
        B. Mechanical
        C. Plumbing
        D. Building
        E. Local
        F. Utility
      II. Piping Techniques
          A. Size
          B. Trap(s)
          C. Insulation
          D. Brazing
          E. Soldering
          F. Nitrogen purge
          G. Support(s)
          H. Pitch
        III. Duct Fittings
            A. Transitions
            B. Converging
            C. Diverging
            D. Round
            E. Flex
            F. Round-oval
          IV. Roof Preparation
              A. Removing old roof
              B. Setting roof curb
              C. New roof
            V. Pitched Roof
                A. Setting jack
                B. Sealing opening
              VI. Roof Pitch
                  A. Calculate
                  B. Design roof jack
                VII. Wire Size
                    A. Design criteria
                    B. Manufacturer data
                  VIII. Equipment Selection
                      A. Tools
                      B. Roof jacks
                      C. Plenums
                      D. Stands
                      E. Welding equipment
                      F. Soldering equipment
                      G. Ducts
                      H. Fittings
                    IX. Equipment Start-up
                        A. Electrical
                        B. Mechanical
                        C. Manufacturer data sheet
                      X. Pipe Size
                          A. Refrigeration lines
                          B. Gas lines
                        XI. System Evaluation
                            A. Evaluate
                              1. old
                              2. proposed
                            B. Code updates
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