2. DESIGN & APPLICATIONS
2.1 Applications
The FIREPEX residential
fi
re sprinkler system serves the requirements
for
fi
re sprinkler systems as de
fi
ned by National Fire Protection
Association (NFPA)
Standard 13D Installation of Sprinkler Systems in
One- and Two- Family Dwellings and Manufactured Homes
and the
International Residential Code Section (IRC) P2904
.
The purpose of NFPA 13D and IRC P2904 is to provide a sprinkler
system that aids in the detection and control of residential
fi
res, thus
offering improved protection against injury and loss of life. A sprinkler
system that is designed and installed in accordance with this standard
is expected to prevent
fl
ashover (total involvement of the
fi
re) in the
room of
fi
re origin, where sprinklered, and to improve the chance for
occupants to escape or be evacuated.
RAUPEX white UV shield pipe and
fi
ttings are approved
for use in residential
fi
re sprinkler systems as de
fi
ned by NFPA 13D
and IRC P2904 for a variety of residential applications including single-
or two-family homes, town homes, modular homes and manufactured
housing.
Fig. 2.1: FIREPEX installation
2.2 Types of Fire Sprinkler Systems
The NFPA 13D standard categorizes all
fi
re sprinkler systems within
two general types: wet pipe systems and dry pipe systems.
- Wet pipe systems are
fi
lled with water and installed in areas not
subject to freezing.
- Dry pipe systems are not
fi
lled with water, and can be located in
unheated areas subject to freezing.
The FIREPEX system is for wet piping systems only.
Within the wet pipe systems, NFPA 13D de
fi
nes the layout of systems
under the following types, for which the FIREPEX system can be
installed:
- Multipurpose Sprinkler System
- Passive Purge Sprinkler System
- Stand-Alone Sprinkler System
2.2.1 Multipurpose Sprinkler Systems
Multipurpose systems are de
fi
ned in NFPA 13D and IRC P2904 as a
piping system intended to serve both
fi
re sprinklers and domestic
plumbing needs. A multipurpose system integrates the piping
connected to a water supply with sprinklers that automatically
discharge water over a
fi
re area. All piping in a multipurpose system
supplying sprinklers must be listed or conform to the piping speci
fi
ca-
tions in NFPA 13D or IRC P2904.
Water Heater
To Domestic Hot Water
City Water Main
Water Meter
T/P Relief Valve
Domestic Cold Water
Domestic Hot Water
Fixtures
Service Line
Fire Protection
Domestic
Fixture
Domestic
Fixture
Domestic
Fixture
Fire Sprinkler
Fire Sprinkler
Fig. 2.2: Multipurpose system
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