Title: TFP510_06_2015.pdf
Notes: 1. For protected area temperatures that occur between values listed above, use the nextcooler temperature.2. These lengths are inclusive of wind velocities up to 30 mph (18,6 kph).TABLE C EXPOSED SPRINKLER BARRELS IN WET PIPE SYSTEMS MINIMUM RECOMMENDED LENGTHSTable C to determine a sprinkler’s appropriate exposed barrel length to prevent water from freezing in the con- necting pipes due to conduction. The exposed barrel length measurement must be taken from the face of the sprinkler fitting to the surface of the structure or insulation that is exposed to the heated area. Refer to Figure 11 for an example.