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Gas Course Outline

Principles of Gas Fireplaces and Troubleshooting
Instructor: Bob Wise
3 Day Class Outline                  

1st Day

8:30 until 10:30 AM

  1. Characteristics of Fuel Gases
  2. Molecular Make up
    1. Natural (CH4)
    2. Propane (C3H8
    3. Specific Gravity
      1. Natural (.6)
      2. Propane (1.52)
      3. Ignition Temperatures
        1. Natural (1150)
        2. Propane (920)
        3. Combustion Ratio
          1. Natural (4 to 14)
          2. Propane (2.15 to 9.6)
          3. Heat Value
            1. Natural (1000Btu/1 ft3)
            2. Propane (2500 Btu/1 ft3)
            3. Hazards of working with Propane
  1. Principles of Combustion
  2. Complete Combustion
  3. Incomplete combustion
  4. Blue Flame Technology (where complete combustion occurs)
  5. Yellow Flame Technology (where complete combustion occurs, cautions)
  6. Demonstration of blue flame and yellow flame combustion and incomplete combustion
  1. Controlling Btu’s
  2. Pressure
    1. Delivery and Manifold for Natural and Propane
    2. Effects of tank size, location (propane)
    3. Effects of lower tank pressure (propane)
    4. Effects of colder temperatures (propane)
    5. How regulators work
    6. How regulators adjust pressure
    7. Hands-on adjusting pressure              
    8. Orifice
    9. Air Shutter
    10. Effects of Natural Gas Appliance on Propane
    11. Effects of Propane Appliance on Natural
    12. Determining Btu’s  both natural gas and propane
    13. Hands-on examples of determining Btu’s  both gasses

10:45 until 12:30 PM

  1. Gas Pipe Sizing
  2. Not a How to  Diagnostic principles only
  3. Bonding
  4. Grounding
  5. Electrolysis issues i.e. different materials in contact with one another
  6. Longest Run Method
    1. Type of pipe
    2. Delivery pressure
    3. Allowable drop in pressure
    4. Longest run
    5. Diversity factor
    6. Interpreting pipe sizing charts
    7. Examples  both natural gas and propane
    8. Examples  2 lb systems
  7. Combustion Air Requirements
  8.  Standard method
  9. KAIR method
  10. Sources of additional air
  11. New IRC requirements
    1. What you MUST be aware of
    2. Effect on hearth equipment

1:30 until 3:00 PM

  1.  Codes and Standards   IFGC and NFGC
  2. Clearances
  3. Shut off Valves
    1. 5 foot rule and exceptions
    2. Connectors
      1. 36 inch max for fireplaces and log sets
      2. Sediment Traps

VII.  Categorizing Gas Appliances

  1. Venting System
  2. Appliance Type
  3. Appliance Function
  4. Control Valve
  5. Appliance Standard
    1. Venting
    2.  Conventional
      1. Principles
      2. Placement of pipe and how to install
      3. Shut off switches
      4. Effect of negative pressure and how to determine
      5. IRC impact

3:15 until 5:30

  1.  Direct vent
    1. Principles
    2. Installation
    3. Hands on diagnosing issues
      1.  Millivolt Valves
        1. Thermocouples
        2. Voltage
        3. Measuring voltage   load and no load
        4. Possible circuitry
        5. Hands on
          1. Thermopiles
          2. Voltage
          3. Measuring voltage   load and no load
          4. Circuitry
          5. Hands-on
            1. Controlling devices
            2. Wall switches, remotes, thermostats
            3. Continuity
            4. Diagnosing problems
            5. Hands on

2nd Day 8:30 until 10:30

  1. Valve operation
  2. Diagnosing flow problems
  3. Diagnosing electrical problems
  4. Hands on
    1. Flame adjusting
    2. Controlling devices
    3. Adjustability  hands 0n

10:45 until 12:30 PM

  1. Electronic Valves
  2. Different types
    1. Brands
    2. Function
    3. Safety features
    4. How they operate
      1. Flame rectification
      2. Back up systems
      3. Controlling devices
        1. Determining voltage and hands-on

1:30 until 3:00 PM

  1. Modules
    1. Analyzing problems and hands on
    2. Circuitry
      1. Measuring voltage
      2. Checking continuity
      3. Hands on
        1. Unvented Appliances
        2. ODS
          1. How it works
          2. Precautions
          3. Hands on ODS
          4. Restrictions
            1.  CO Effects

3:15 until 5:30 PM

  1. CO detecting equipment
  2. Conventional venting
  3. Unvented
  4. Direct Vent
  5. Hands on testing on all 3 types of appliances
    1. How to with tools
    2. Required
    3. Nice to have
    4. Convenience
      1.  Fuel conversion
      2. Following Manufacturer’s instructions
      3. Changing pressure
      4. Changing orifices
      5. Conversion labels
      6. Hands-on

Day 3   8:30 until 10:30 AM

  1. Interpreting Codes
  2. Working with building officials
  3. Learning what codes you are working under
  4. Manufacturer’s  Instructions and codes
    1. Basic Electricity
    2. Types of Circuits
    3. Safety switches
    4. Hands on diagnosing
      1. Proper procedures for service
      2. Warranty
      3. Good Will
      4. Installation
      5. Repair
      6. Maintenance

10:45 until 12:30 PM

  1. Review of valves and controlling voltage
  2. Robertshaw millivolt
  3. SIT millivolt
  4. Maxitrol
  5. Dexen
  6. American Flam, Sky Tech
  7. MHSC
  8. SIT electronic

1:30 until 5:30 PM

  1. Troubleshooting,(attendees will be expected to demonstrate a understanding of what was taught along with a SAFE approach to correcting problems and the proper method of handling tools
  2. Utilizing knowledge
  3. Millivolt,
  4. Electronic controls
  5. Direct vent fireplace
  6. Unvented
  7. Venting