Design and Installation
06-236115-001 4-1 October 2014
CHAPTER 4
DESIGN AND INSTALLATION
4-1 INTRODUCTION
This chapter is intended for system designers and installers. It outlines the steps needed to
design the system including the limitations imposed on the design by the system hardware.
The second part of this chapter explains equipment installation.
4-2 DESIGN PROCEDURE
4-2.1 General
The system design is based on the requirements of National Fire Protection Association (NFPA)
Standard 2001, 2012 Edition, and the Authority Having Jurisdiction (AHJ).
4-2.2 Application
The following steps must be taken to design an HFC-227ea system:
• Determine the amount of HFC-227ea required based on the design concentration required
for the hazard and other factors related to the hazard. Refer to Table 4-1 for Class A and
Class C hazards. Refer to Table 4-3 for Class B hazards.
• Determine the required components for the system.
• Determine the nozzle and cylinder locations.
• Determine piping layout and pipe type.
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