Viking ESFR Service Manual download pdf (Page 13)

or lines should not be looped together as done in some dry pipe and preaction

systems.

Tree Sprinkler System: A system of dead-end branch lines centrally fed by a

cross main.

The discharge pressure for all sprinklers flowing must maintain at a minimum of

the required design.

The 1,100 gallon (4,163 liter) system volume is established by adding the piping

volume from the remote area to the top of the Easy Riser

Check Valve at the

base of the riser. The actual propylene glycol solution requirement for the system

is determined by adding all the system piping volume together.

All NFPA 13 installation criteria and AHJ requirements apply to installation of the

Viking ESFR Cold Storage System with the following exceptions:

• Commodity limited to Class II or less (limited to wood pallets).

• Maximum ceiling height to bottom of inside upper deck is 40 ft. (12,2 m) with

a maximum storage height of 35 ft. (10,7 m) and a minimum sprinkler

discharge pressure of 40 PSI (278 kPa). OR:

• Maximum ceiling height to bottom of inside upper deck is 45 ft-3 in. (13,8 m)

with maximum storage height of 40 ft. (12,2 m) and a minimum sprinkler

discharge pressure of 60 PSI (414 kPa).

• Where the minimum temperature in the area being protected is 8 °F (-13.3

°C) or above, 35% percent by volume of propylene glycol factory premixed

with water must be used. Viking requires Firefighter Eliminator C premix 35%

propylene glycol/water mixture with a freeze temperature rating (freeze point)

of 2.4 °F (-16.4 °C). OR:

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Viking ESFR Service Manual Page 13