General Air Products, Inc. - Air Compressor Selection and Design for Dry Pipe Fire Sprinkler Systems. This presentation is designed to educate fire sprinkler professionals, especially designers, engineers and technicians on the fundamentals of air compressor design, function and proper sizing and selection. For questions on this presentation please contact us at 800-345-8207 or visit our web site www.generalairproducts.com

1. Air Compressors & Accessories Selection and Design Proud Member of Dry Pipe System Air Compressors NFPA 13D Residential Fire Pumps

4. Key Terms, Concepts & Codes NFPA 13 7.2.6* - Air Pressure and Supply - This section of NFPA 13 governs most of what we will be discussing today.

5. Key Terms, Concepts & Codes Holding Pressure - The MINIMUM pressure at which the system needs to be maintained (13, 7.2.6.6.1)

7. Key Terms, Concepts & Codes Holding Pressure (System) vs. Feed Pressure (from Compressor) - Feed pressure from the air compressor must be higher than the system holding pressure in order for the compressor to flow air into the system.

9. Key Terms, Concepts & Codes Pump Up Time - The pump up time is the time for the system piping to rise to the final design holding pressure.

12. Key Terms, Concepts & Codes Pressure Regulation - Pressure regulation is the varying (fine tuning) of the feed pressure from the compressor to the system. - Employ an Air Maintenance Device (AMD) (13, 7.2.6.5.1)

13. Key Terms, Concepts & Codes System Capacity - The total system capacity as far as compressor sizing is concerned should include the piping network as well as the compressor feed piping and riser volume (13, 7.2.3.1)

14. Selecting A Compressor by Type and Application Oil less… Lubricated… Parking Garage… Freezer Room…

16. Selecting a Compressor by Type and Application Oil less Air Compressors vs. Lubricated Air Compressors - Oil less Pro: Minimal Maintenance, Flexibility of Installation, Minimum Footprint Con: Higher Initial Cost - Lubricated Pro: Lower Initial Cost, Simple Parts Replacements Con: More Frequent Maintenance

17. Selecting a Compressor by Type and Application Riser Mounted, Floor Mounted, or Tank Mounted? High Pressure, Standard Pressure, or Low Pressure? - Dictated by valve selection and holding pressure

22. Air Compressor Accessories Motor Starters… Pressure Switches… Air Maintenance Devices…

23. Air Compressor Accessories Motor Starters (Line Starters): General Air Products' IEC Line Starter provide protection to motor windings from harmful currents that result in temperature rises that may be caused by either overloading the motor, sustained low line voltage, or locked rotor. Note: We strongly recommend that a line starter accompany every General Air Products' air compressor.

25. Air Compressor Accessories Pressure Switch and Line Starter Wiring Diagram:

26. Air Compressor Accessories Air Maintenance Devices: The AMD-2 is used for automatic operation with a dedicated air compressor for a sprinkler system, such as a base mounted compressor. The AMD-1 is used when compressed air is supplied through an existing factory air supply or when a using tank mounted unit.

27. Air Compressor Accessories Tanks (Pressure Vessels): Riser Mounted Vertical Horizontal

29. How to Properly Size an Air Compressor

34. What to Consider When Writing an Air Compressor Spec

35. What to Consider When Writing an Air Compressor Spec - Below is an example of an Air Compressor Spec that we have written and is available on the Spec Center Section of our web site.

36. Dry Pipe System Air Compressors NFPA 13D Residential Fire Pumps Call 1-800-345-8207 or visit our web site www.generalairproducts.com visit our blog www.generalairproducts.com/blog