Technical data

46
Appearance: Fluorescent green color
For further details, see the Viking Firefighter Eliminator C Material Safety Data
Sheet (page 50 e-h).
13.3 Features
• Has a freeze temperature rating (freeze point) of 2.4 °F (-16.4 °C). (Note:
Freeze temperature is where ice crystals begin to form.)
• Is a ready-to-use solution pre-mixed in the proper 35% concentration of
propylene glycol for the Viking ESFR Cold Storage System for use in areas
subject to a minimum temperature as low as 8 °F (-13.3 °C).
• Was utilized in the full-scale research fire tests for the Viking ESFR Cold
Storage System.
• Includes corrosion inhibitors to provide corrosion control and microbiological
control of the system piping and components.
14.0 HEAT TRACE SYSTEM & INSULATION
14.1 Insulation of Riser Main
The riser and supply main coming from the freezer area that is maintained at the desired
freezing temperature to the valve riser system, which is in a heated area will produce
frosting on the exterior of the piping. Hydronic Convective heat transfer takes place in
this type system in which cold antifreeze is circulated from the freezer toward the
warmer piping area. This circulation allows the riser pipe to maintain a very cold
temperature as supplied from the freezer area. The moisture in the heated area air will
cause formation of liquid on the pipe surface. Due to the freezing temperature of the
antifreeze Frost will form on the exterior of the supply piping. In order to prevent the
moisture from building on the pipe exterior surface, fiberglass Thermal insulation with a
polyester vapor barrier wrap is required to be applied to the supply piping from the
freezer wall to the bottom of the Isolation check valve. In severe cases the insulation
may require heat tracing under the insulation in order to maintain a higher temperature
at the pipe exterior surface under the insulation.
14.2 Insulation of Isolation Check Valve
Viking has available a preformed insulation cover that allows for trim piping connections
and removal for valve maintenance. These are custom manufactured for each check
valve size.
14.3 Heat Trace System
Viking has available through our SupplyNet locations a self regulating heat trace system
when required. The temperature control unit provides automatic control of the set pipe
surface temperature. The length of heat trace wire and pitch of wrap on the pipe is
determined by the given temperature conditions. Sizing of wire length and wattage is
available on request.