Meeting/Event Information

The ABC's of HVAC

June 07, 2018
11:30 AM to 1:00 PM
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SPEER Mechanical
5255 Sinclair Road
Columbus, OH 43229

Join Greg Ward of Speer for this informative Lunch and Learn session on HVAC.  Don't miss this opportunity to ask all of your questions on this important building function.  Registration is required and deadline is June 1st.  Speer is generously providing lunch - Thanks to them! 

Item #1: The Refrigeration Cycle

  • Brief overview of refrigeration cycle
    • Compressor, condenser, metering device, evaporator
  • How A/C Equipment Works


Item #2: Types of Systems

  • 1)   Split systems, large and small
    • Remote condensing unit, air handler/furnace
  • 2)   Packaged rooftop units constant volume
  •      Packaged rooftop units variable systems
    • Variable Volume Systems
      • VAV boxes, heating and cooling
        • Types of heat: Electric, hot water
      • VAV box operation
        • Dampers etc.
  • 3)   Heat pump, cooling tower & boiler systems
    • Heat rejection to loop, and then outside to tower
  • 4)   Chillers & boilers
    • Water cooled chillers
      • Cooling tower
    • Air cooled chillers
      • Packaged
    • Boilers, steam and hot water
      • Can be used for heat pump loops
    • Chilled water & hot water for fan coil units, VAV boxes, air handlers, radiant systems
    • Two pipe vs. four pipe systems
  • 5)   Computer Room AC Units
    • DX units (with remote condenser) or chilled water units

Item #3: Building Automation Systems

  • Pneumatic control systems
    • Air compressor keeps pressure in system, diaphragms physically expand and contract to make contacts, and drive operations
  • DDC – Direct Digital Control
    • Alarms, full control, remote access, etc.
    • BACnet
    • “Open Protocol”

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