Technical data

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TECHNICAL DATA
The Viking Corporation, 210 N Industrial Park Road, Hastings MI 49058
Telephone: [phone] Technical Services 877-384-5464 Fax: [phone] Email: [e-mail]
ESFR PRE-PRIMED SINGLE
INTERLOCK PREACTION
COLD STORAGE SYSTEM
March 7, 2008
4. Designing the Detection System
The detection system shall consist of low temperature “spot” type heat detectors, air sampling
smoke detection or beam smoke detection. Linear heat detection is not suitable for this system
and shall not be used.
Viking does not have a preferred manufacturer of initiating devices. Spot heat detectors are
typically not subject to compatibility issues with the release control panel. Viking considers all
listed and approved spot type heat detectors that the manufacturer determines is appropriate for
cold storage applications acceptable. The detection system shall be designed to allow the heat
detectors to operate prior to the Viking K25.2 ESFR sprinklers by selecting a lower temperature
rating and RTI for the heat detector. (NFPA 13 defines an ESFR Sprinkler as having a thermal
element with an RTI of 50 (meters sec.
½
) or less.) The heat detector manufacturer shall be con-
tacted for the heat detector RTI information.
Air sampling systems are also considered acceptable for activation of the ESFR Cold Storage
System, and should be designed in accordance with the manufacturer’s instructions.
The detection system shall be designed in accordance with the requirements of NFPA 72.
5.6.2.3 Marking: Heat-sensing fire detectors shall be marked with their listed operating tempera-
ture. Spot-type heat detectors shall also be marked with their RTI (response time index). The
RTI marking requirements shall have an effective date of July 1, 2008.
5.6.5.5.1 On ceilings 10 ft to 30 ft (3 m to 9.1 m) high, heat detector linear spacing shall be
reduced in accordance with Table 5.6.5.5.1 prior to any additional reductions for beams, joists,
or slope, where applicable.
5.6.5.5.2 The minimum spacing of heat detectors shall not be required to be less than 0.4 times
the height of the ceiling.
Table 4 - Detector Classification from NFPA 72
Table 5.6.2.1.1 Temperature Classifi cation for Heat-Sensing Fire Detectors
Temperature
Classifi cation
Temperature Rating Range Maximum Ceiling Temperature Color
Code
° F ° C ° F ° C
Low* 100-134 39-57 80 28 Uncolored
Ordinary 135-174 58-79 115 47 Uncolored
Intermediate 175-249 80-121 155 69 White
High 250-324 122-162 230 111 Blue
Extra high 325-399 163-204 305 152 Red
Very extra high 400-499 205-259 380 194 Green
Ultra high 500-575 260-302 480 249 Orange
*Intended only for installation in controlled ambient areas. Units shall be marked to indicate maximum ambient installation
temperature.