Technical data

Page 4
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
I. SYSTEM DESCRIPTION
The Viking ESFR Pre-Primed Single Interlock Preaction Cold Storage System is a fixed fire protection
system designed for installation in refrigerated, cold storage and unheated warehouse applications
with rack storage of Class II commodity on wood pallets. This system effectively prevents frost plugs
associated with systems that supervise the piping network with air. The single interlock preaction sys-
tem piping network is supervised with a propylene glycol solution. When using this system for single-,
double- and multiple-row rack storage, Viking K25.2 ESFR sprinklers are used at the ceiling only and
no in-rack sprinklers are required.
1. System Considerations
All materials installed on the system shall be compatible with propylene glycol solution.
Where the minimum temperature in the area being protected is 8 °F (-13.3 °C) or above,
Firefighter Eliminator C 35% percent by volume propylene glycol factory premixed solution
must be used.
Where the minimum temperature in the area is between 8 °F (-13.3 °C) and -21 °F (-29.4 °C),
firefighter Eliminator F 50% percent by volume propylene glycol factory premixed solution
must be used.
The minimum ambient temperature where the system can be used is -21 °F (-29.4 °C). This
is not an average temperature; it is the lowest temperature within the area.
The system piping configuration shall be designed in a tree configuration only. The
mains and branch lines should not be looped together. Grid systems are NOT allowed. The
piping system shall be pitched to drain completely. The branch lines shall be pitched at ¼”
per 10 ft (4 mm/m) run of pipe and the mains shall be pitched ½” per 10 ft (4 mm/m) run of
pipe.
2. System Makeup
Each Viking ESFR Pre-Primed Single Interlock Preaction Cold Storage System requires the fol-
lowing components for proper operation:
Water Supply Control Valve
Deluge Valve with Conventional Deluge Valve Trim
Electric Release Trim with Solenoid Valve
Primary Easy Riser
®
Check Valve with Cold Storage Trim including Automatic Pressure
Control Trim
Bypass Easy Riser
®
Check Valve with Bypass Trim
Digital Supervisory Pressure Switch
CS-1 Tank and Pump Package
Viking VFR-400 Release Control Panel
Reclaim tank for Automatic Pressure Control System
System Reclaim Tank (Recommended)
AV-1 Automatic Air Vent (One for each high point recommended)
Firefighter Eliminator Propylene Glycol Solution
K25.2 ESFR Pendent Sprinklers (Viking VK510)
**Please see Appendix A for Material Selection
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